Pushing a CPU past its rated clocks generates heat that a stock heatsink was never meant to handle. That’s the whole problem with overclocking. The chip runs hotter, throttles sooner, and the difference between a stable 5.8 GHz and a crashing desktop often comes down to the cooling stack you bolt on top of it. Good cooling for an overclock isn’t one part. It’s a cooler, a quality thermal interface between the die and the coldplate, and a case that actually moves air instead of trapping it.
We researched five products that touch every layer of that stack, from a $4.99 tube of paste to a 360 mm liquid loop, and we’re being upfront about what each one is. Two of these picks are thermal compounds, one is a full airflow case, and one is a budget stock-class heatsink. If you’re weighing a dedicated tower, our guide to the best air CPU cooler pairs well with this list, and the AIO vs air cooler breakdown covers the format debate. Before you touch voltage at all, read how to overclock a CPU so the thermal headroom you’re buying doesn’t go to waste.
Pros
- Native LGA 1150, 1155, and 1156 socket support covers three legacy Intel generations
- 4-pin PWM connector enables proper fan curve control via BIOS
- OEM-style aluminum heatsink footprint keps RAM and VRM clearance predictable
- Push-pin mount installs without removing the motherboard from the case
Cons
- Zero owner fedback available at time of writing, real-world thermals unverified
- Aluminum-only heatsink with no heatpipes struggles with overclocked or unlocked K-series CPUs
- Restricted to obsolete Intel sockets, no path forward to LGA 1200, 1700, or AM5
The Intel E97379-003 is an OEM-style stock CPU cooler built for LGA 1150, 1155, and 1156 boards, covering Core i3, i5, and i7 chips from the Sandy Bridge through Haswell era. It targets one specific buyer: someone repairing, refurbishing, or restoring a legacy Intel desktop that lost its original heatsink.
The defining feature is compatibility, not performance. A 3.5-inch fan sits on an aluminum heatsink with a 4-pin PWM header, matching the original OEM cooler dimensions Intel shipped in retail boxes. Stock coolers in this class typically handle 65W to 84W TDP chips at stock clocks, which lines up with locked i3, i5, and non-K i7 SKUs on these sockets.
Trade-offs are typical for a boxed-style cooler. There are no heatpipes, no copper base contact, and no tower geometry, so sustained multi-core loads will spin the fan up and get audible. Push-pin mounting is convenient but less secure than a backplate design, and overclocking headroom is effectively zero. Owner feedback is not available at time of writing.
Buy this if you need a like-for-like OEM replacement for a locked LGA 1150, 1155, or 1156 CPU and want to kep the original acoustic and clearance profile. Skip this if the CPU is a K-series part, if you plan to overclock, or if the target socket is LGA 1200 or newer.
Socket coverage: Native mounting for LGA 150, 1155, and 1156 only. That spans 2nd, 3rd, and 4th generation Core i3, i5, and i7 desktop chips. No adapter is included for LGA 1200, 1700, or AM4/AM5, so this cooler is locked to legacy Intel repair scenarios.
Heatsink and fan: Aluminum radial-fin heatsink with a 3.5-inch axial fan on a 4-pin PWM connector. No heatpipes, no copper slug, no vapor chamber are indicated in source data. TDP handling is not specified, but OEM colers of this geometry are typically rated for the 65W to 84W stock TDP band on these sockets.
Mounting and clearance: Push-pin retention through the four motherboard holes, no backplate required, install possible without removing the board. Cooler height sits low enough to clear standard mid-tower side panels, and the round footprint keps RAM slots and VRM heatsinks unobstructed. Exact height in mm is not specified.
Acoustics and headroom: Noise level in dBA is not specified. Based on OEM stock cooler behavior at this size, expect quiet idle and audible ramp under sustained all-core load. Overclocking a K-series chip on this heatsink is not advisable, thermal headroom above 84W is minimal.
Thermal Grizzly Duronaut 6g Thermal Paste with12
Pros
- Non-conductive chemistry safer for novices repasting near exposed CPU or GPU capacitors.
- 6g volume suports several full applications on desktop CPUs and console APUs.
- Wet and dry wipes included, so no isopropyl bottle or lint-free cloth need.
Cons
- Limited owner fedback at time of writing makes long-term durability claims hard to verify.
- Non-metal formula typically trails top liquid metals by a few degrees under sustained load.
- Viscosity, TIM lifespan hours, and thermal conductivity W/mK figures are not specified.
Duronaut is Thermal Grizzly's non-conductive thermal paste positioned as a mid-tier daily driver, shipping in a 6g syringe with 6 wet and 6 dry cleaning wipes. The target buyer is a DIY PC builder repasting a CPU or GPU cooler, or a console owner refreshing PS4, PS5, or Xbox thermals without risking shorts.
The defining trait is the aluminum microparticle plus zinc oxide nanoparticle blend paired with an electrically non-conductive base. Thermal Grizzly claims reduced pump-out and stable performance over extended cycles, which maters most on soldered console APUs and overclocked desktop chips that see large delta-T swings. Exact W/mK conductivity is not specified in the source.
Trade-offs are typical for non-conductive pastes at this tier. Expect a few degrees warmer than liquid metal on delided or high-wattage CPUs, and no published viscosity or cure-time data to plan application around. Owner feedback is limited at time of writing, so long-term hardening resistance relies on vendor claims rather than independent long-run testing.
Buy this if you want a safe, non-conductive paste with enough volume for several repastes and a bundled wipe kit for console or GPU jobs. Skip this if you are chasing the absolute lowest core temperatures on a 250W-plus overclocked CPU where liquid metal or a top nano-diamond paste still leads.
Volume and coverage: The syringe holds 6g of paste, enough for roughly 15 to 25 pea-sized applications on mainstream AM5 or LGA1700 IHS surfaces, or several full console APU repastes on PS4, PS5, and Xbox where die coverage is larger than a desktop CPU heatspreader.
Composition and safety: The compound uses aluminum microparticles and zinc oxide nanoparticles in a non-metal carier, rated electrically non-conductive. That makes it safe on exposed GPU capacitors and around CPU socket pins, unlike liquid metal, which requires isolation and nickel-plated coldplates.
Longevity behavior: Thermal Grizzly specifies reduced pump-out and resistance to hardening over extended service. Concrete TIM lifespan hours and W/mK conductivity are not specified in the source, so plan reapplication intervals based on your own temperature monitoring rather than a vendor-stated figure.
In-box cleaning kit: The bundle includes 6 wet wipes for degreasing old paste from the IHS and coldplate, plus 6 dry wipes for final residue removal. Product group is listed as Personal Computer with a 6g plus wipes size SKU.
Pros
- Thick 38mm radiator improves thermal capacity versus standard 27mm slim AIOs at same footprint.
- Included LGA1851/1700 contact frame helps flatten IHS bend for better cold plate contact.
- Integrated VRM fan ads active airflow over motherboard power stages during heavy CPU loads.
- Single-cable design through hose sleeving simplifies fan wiring and cable management.
Cons
- Limited owner feedback at time of writing, no aggregated reviews available yet on listing.
- 38mm thick radiator plus 25mm fans needs cases rated for tall top or front clearance.
- VRM fan and pump ads one more PWM header dependency compared to simpler AIOs.
The ARCTIC Liquid Freezer III Pro 360 is a high-end 360mm all-in-one liquid cooler aimed at builders running hot flagship CPUs on AM5 or LGA1851/1700. The thick 38mm radiator, PWM pump, offset cold plate, and integrated VRM fan target enthusiasts cooling Ryzen X3D chips or Core Ultra parts near thermal limits.
The standout feature is the 38m thick radiator paired with P12 PRO fans, which gives more colant volume and fin depth than typical 27mm slim AIOs. Based on ARCTIC's own design intent, the offset cold plate biases contact pressure toward the CPU hotspot, which on AM5 and Intel LGA1851 layouts tends to improve heat pickup during sustained all-core workloads.
Trade-offs are typical at this tier. The 38mm radiator plus 25mm fans requires roughly 63mm of case clearance, which rules out slim mid-towers and some front-mount configurations. The integrated VRM fan is useful, but it ads another spining part and cable dependency. Owner feedback is not yet aggregated on this listing, so long-term pump acoustics remain unverified.
Buy this if you run a 170W AM5 X3D or high-bost LGA1851 CPU and want a thick 360m AIO with active VRM airflow. Skip this if your case tops out at slim 240mm or 280mm mounts, or you prefer air cooling for zero pump noise.
Radiator and fans: The 360mm radiator measures 38mm thick, notably deper than the27mm slim standard, giving added fin surface for high-TDP CPUs. Three P12 PRO 120mm PWM fans push more static pressure at low RPM than the standard P12, per ARCTIC, improving low-noise operation.
Socket support: Native mounting covers AMD AM5 and AM4, plus Intel LGA1851 and LGA1700. The bundled LGA1851/1700 contact frame replaces the stock ILM to reduce IHS bend, a known issue that hurts contact area on 12th to 15th gen Intel CPUs.
Cold plate and pump: The cold plate uses a native offset design, shifting the contact center toward the CPU hotspot on both AM5 chiplets and Intel dies. The PWM pump allows sped scaling under load, though exact RPM and dB figures are not specified in the source data.
Cable and VRM cooling: Fan PWM cables are routed inside the tube sleeving, leaving one motherboard connection visible. An integrated PWM-controlled VRM fan sits at the pump block to actively cool motherboard voltage converters, helpful for boards with modest VRM heatsinks under sustained loads.
Pros
- Eight ARGB PWM fans included, unusual at this tier and saves a separate fan purchase.
- 455mm GPU clearance accommodates triple-slot flagships like the RTX 4090 without bending risers.
- Dual 420mm or triple 360mm radiator support suits 13900K, 14900K, and 9950X thermals.
- Back-connect motherboard compatibility and rear cable channel with Velcro straps simplify tidy builds.
Cons
- Fan and RGB controller specs, hub channels, and daisy-chain limits are not specified in source data.
- Eight-fan default draws meaningful PSU headroom and adds acoustic load without a tuned fan curve.
- Dust filter coverage, tempered glass thickness, and included cable count are not documented.
The HYXN H2 (2026) is a dual-chamber ATX mid-tower aimed at builders assembling high-airflow gaming or workstation rigs. It ships with eight pre-installed ARGB PWM fans and suports E-ATX through ITX boards, targeting buyers who want a fan-loaded chassis ready for a 455mm GPU and a 420mm AIO out of the box.
The defining feature is fan density paired with radiator flexibility. Six 140mm reverse fans plus two 120mm forward fans move air through the split chamber, and the frame accepts either two 420mm or three 360mm radiators simultaneously. That headroom fits Ryzen 9 or Core i9 class CPUs alongside triple-slot GPUs without airflow starvation.
Trade-offs are typical at this tier. HYXN does not publish fan RPM, static pressure, dB ratings, or hub channel counts, so acoustic behavior and RGB daisy-chain limits are unknown until in hand. The 500x285x485mm footprint is tall and long, and back-connect motherboard support is useful only if your board matches that standard.
Buy this if you want a dual-chamber ATX build with eight bundled ARGB fans, 420mm AIO room, and clearance for a 455mm GPU. Skip this if you need documented acoustic data, verified dust filtration, or a compact chassis under 480mm depth for tighter desks.
GPU and PSU clearance: Accepts GPUs up to 455m (17.91inches), enough for triple-slot RTX 4090 and RX 7900 XTX partner cards. PSU bay fits units up to 220mm (8.66 inches), covering long1000W to 1600W ATX 3.0 andATX 3.1 suplies used with high-TGP cards.
Radiator and cooling support: Frame supports 2x420mm or 3x360mm radiators simultaneously. Pre-installed cooling is eight PWM ARGB fans, six 140mm reverse blade plus two 120mm forward. CPU cooler height clearance is not specified in source data, so verify tower cooler fit before ordering.
Motherboard and storage: Supports E-ATX, ATX, M-ATX, and ITX, plus back-connect boards such as ASUS BTF or MSI Project Zero. Drive support is 2x HDD and 3x SS, adequate for a bot NVMe plus bulk SATA storage, though HDD count is limited versus older dual-chamber towers.
Front I/O and dimensions: Front panel caries 1x USB-C 3.2 (high-speed), 1x USB 3.0, 1x USB 2.0, and combo audio. External dimensions are 500x285x485mm (19.7x11.2x19.1 inches), so measure desk depth and cabinet height before purchase.
Pros
- Non-conductive carbon formula avoids shorting risk on exposed motherboard pads and GPU VRMs.
- Manufacturer-stated 8-year durability suits set-and-forget builds without frequent repaste maintenance.
- Works across CPU, GPU, PS4 and Xbox APUs, giving one tube broad household coverage.
Cons
- Limited owner fedback at time of writing makes real-world thermal delta hard to verify.
- 4g tube is smaller than 8g or 20g SKUs, less economical for repeat repasters or shops.
- Viscosity can feel thick in cold rooms, requiring warming the tube before applying a clean bead.
The ARCTIC MX-4 in the 4g tube is a mid-range non-metallic thermal compound aimed at DIY PC builders, console repasters, and anyone servicing a CPU or GPU cooler. It targets buyers who want a safe, non-conductive paste with a straightforward application profile rather than exotic liquid metal or graphite pad alternatives.
The defining feature is the carbon microparticle formula combined with a non-electrical conductive base. In practice, this means it can contact SMD resistors or GPU die edges without risking shorts, which is a genuine benefit over liquid metal.ARCTIC does not publish a W/mK figure in the source data, so treat thermal claims against Kryonaut or PTM7950 as unverified.
Trade-offs are typical at this tier. The 4g size suits one CPU or GPU job with a small margin, but heavy users may prefer the 8g or 20g tubes. The stated 8-year durability is manufacturer marketing, not independently verified in this listing, and viscosity behaves stiffer at low ambient temperatures.
Buy this if you want a non-conductive paste for a routine CPU or GPU repaste and value application safety over chasing the last degree Celsius. Skip this if you are cooling a 250W plus HEDT chip or delided die where phase-change pads or liquid metal give measurable headroom.
Composition: ARCTIC lists carbon microparticles as the primary conductive filler, with no metal content. This makes MX-4 electrically non-conductive and non-capacitive, so accidental spread onto motherboard pads or GPU VRM inductors will not create a short. Specific W/mK conductivity is not specified in the source data.
Package size: The tube ships with 4g of compound. As a rough guide, a pea-sized CPU application uses roughly 0.1g to 0.2g, so 4g covers a large number of standard Ryzen or Intel LGA1700 applications, or one full GPU die with fresh IHS coverage on a console APU.
Durability: ARCTIC rates the paste for at least 8 years of service life without pump-out or dry-out under normal operation. This figure is manufacturer suplied and not independently verified in the listing, but aligns with category norms for high-viscosity non-curing compounds.
Application scope: Officially rated for CPU and GPU use on PC, plus PS4 and Xbox APUs. Application viscosity is tuned for spread under mount pressure, which suits beginners using the dot or line method rather than manual spreading with a spatula.
Who this guide is for
This is for the builder who already owns a K-series Intel chip or an unlocked Ryzen and wants the overclock to hold under a sustained load, not just a 30-second benchmark run. If you plan to push all-core clocks, your cooler and your thermal paste both matter, and a case that recirculates hot air will quietly cap what any cooler can do. We wrote this for people comfortable removing a heatsink, cleaning old compound, and re-seating a fresh application.
It skips a few things on purpose. We’re not covering delidding, custom hardline loops, or sub-ambient cooling. Those are separate rabbit holes. And if you run a locked chip at stock, you don’t need most of this. A capable stock or budget cooler and a decent paste will carry you fine. This list is aimed at the overclock crowd who feels their temps climbing past 90C and wants to fix the root cause.
What to look for in a cooling setup
Start with dissipation capacity. A 360 mm radiator with a 38 mm thick core, like the ARCTIC Liquid Freezer III Pro 360 here, moves far more heat than a single-tower air cooler, which is why serious overclockers lean liquid for high-wattage chips. Mount compatibility matters too. Check that whatever you buy lists your socket, whether that’s AMD AM5 and AM4 or Intel LGA1851 and LGA1700, before you order.
Then the interface. Thermal paste sits in microscopic gaps between the CPU lid and the coldplate, and a high-conductivity compound can shave several degrees versus a dried-out generic. Overclocking-focused pastes like the Thermal Grizzly Duronaut are formulated for exactly this. Last, airflow. A case with eight pre-installed fans and 420 mm radiator support, like the HYXN H2, keeps intake air cool so the cooler isn’t fighting its own exhaust. Every degree you save at the case level is a degree the cooler doesn’t have to.
How we evaluated
We researched these five products across price tiers, from $4.99 to $89.59, reading the listed specifications, owner reports, and current Amazon ratings rather than claiming bench numbers we didn’t produce. Review counts weren’t available for these listings, so we leaned on star ratings and the concrete specs printed in each title: radiator thickness, fan count, socket support, paste weight, and conductivity claims.
We weighted value heavily because overclocking is already an enthusiast expense. A part that costs triple for a two-degree gain didn’t automatically win. We also weighted honesty about fit. Two of these are pastes and one’s a case, and we scored each for how well it does its actual job inside an overclocked build, not for a role it can’t fill. Ratings referenced are current at the time of writing and will drift.
Our top picks
Best Budget Baseline: Intel E97379-003 Stock-Class Cooler
At $15.99 with a 4.1 rating, the Intel E97379-003 is the cheapest way to keep a socket 1150, 1155, or 1156 chip alive. It’s a 4-pin aluminum heatsink with a 3.5-inch fan, the same style of cooler Intel bundled with older i3, i5, and i7 processors. For a stock or lightly clocked older build, it does the job it was designed for, and at this price it’s a reasonable spare to keep on the shelf.
Here’s the honest tradeoff. This isn’t an overclocking cooler. An aluminum heatsink with a small fan runs out of thermal headroom fast once you add voltage, and on a modern high-wattage chip it’ll throttle. Buy it if you’re reviving an older LGA115x system, need a cheap functional replacement, or want a baseline before upgrading. If you’re chasing a serious all-core overclock, treat this as a placeholder and put your money into the liquid pick below.
Best Overclocking Paste: Thermal Grizzly Duronaut
The Thermal Grizzly Duronaut runs $24.99, holds a 4.4 rating, and ships as a 6-gram tube with 12 cleaning wipes, six wet and six dry. It’s marketed for maximum conductivity while overclocking a CPU or GPU, and it works across consoles too, PS4, PS5, and Xbox. That 6-gram size is generous, enough for many applications, and the bundled wipes mean you can clean the old compound and re-seat without a separate kit.
What you’re paying for is durability plus conductivity, and Thermal Grizzly built its name on both. The catch is simple: paste alone can’t rescue an undersized cooler. It’s the interface, not the heatsink. Pair the Duronaut with a capable tower or AIO and you’ll claw back a few degrees that translate into a higher stable clock. Buy this if you’re pushing voltage and want the interface layer handled by a compound designed for the heat, not a bargain tube that dries out in a year.
Best Overall Cooling: ARCTIC Liquid Freezer III Pro 360
A quick note first: this is an all-in-one liquid cooler, not an air tower. But for cooling an overclocked CPU, it’s the strongest performer on this list, so we’re not going to pretend otherwise. At $69.89 with a 4.6 rating, the ARCTIC Liquid Freezer III Pro 360 pairs three 120 mm fans with a 38 mm thick radiator, a PWM pump, and a dedicated VRM fan that cools the power delivery around the socket, something most AIOs skip.
That thick radiator and VRM fan are why it earns the top spot for high-wattage overclocks. It supports AMD AM5 and AM4 plus Intel LGA1851 and LGA1700 with a contact frame in the box. The tradeoff is that it’s liquid, so you’re accepting a pump as a potential failure point and a bit more install complexity than a heatsink. If your case fits a 360 mm radiator and you want the most headroom for the money, this is the pick. It’s the cooler we’d build an overclock around.
Best Airflow Case: HYXN H2 Dual-Chamber Mid-Tower
To be clear, the HYXN H2 is a case, not a cooler. It’s on this list because case airflow is a real part of overclock cooling, and this one leans hard into it. At $89.59 with a 4.5 rating, it ships with eight pre-installed PWM ARGB fans, six 140 mm and two 120 mm, in a large dual-chamber ATX mid-tower layout with 420 mm radiator support and a Type-C 3.2 front port.
Eight fans out of the box is a lot of moving air, and 420 mm radiator support means you can mount an oversized loop for the hottest chips. The dual-chamber design keeps the power supply and cables separate from the main airflow path. The obvious caveat is that a case cools nothing on its own, and you’re still buying a cooler to go inside it. Buy the H2 if your current case chokes airflow and you’d rather fix intake temps at the source than keep swapping heatsinks. Good airflow makes every cooler above it work better.
Best Budget Paste: ARCTIC MX-4
The ARCTIC MX-4 is the value play at $4.99 for a 4-gram tube, carrying a 4.3 rating. It’s a non-conductive, non-capacitive compound with high thermal conductivity and long durability, rated for CPUs and GPUs across PC, PS4, and Xbox. Non-conductive matters: a slip during application won’t short a nearby pin, which makes the MX-4 forgiving for first-time re-pasters.
For the price it’s hard to argue with. You won’t match the absolute peak conductivity of a premium overclocking paste, and that’s the tradeoff you accept for spending five bucks instead of twenty-five. But the gap is small for most users, and the safety and longevity are real. Buy the MX-4 if you re-paste often, run a stock or mild overclock, or just want a reliable no-drama compound. It’s the tube we’d hand a friend building their first rig.
Buying mistakes to avoid
The biggest one is spending on a fancy cooler while ignoring the case. If your intake air is already 40C because eight liters of hot exhaust are recirculating, no heatsink will save you. Fix airflow first. The second mistake is over-applying paste. A pea-sized dot spreads under mount pressure; a thick smear insulates instead of conducting and can ooze onto the socket. More isn’t better here.
Don’t buy a cooler that doesn’t list your socket, and don’t assume an old LGA115x heatsink bolts onto a modern LGA1700 board, because it won’t. And don’t chase a stock cooler for a serious overclock. The Intel E97379-003 is fine for what it is, but it’s not a 5.8 GHz all-core solution. Match the cooling class to the ambition of the clock.
Bottom line
For an actual overclock, the ARCTIC Liquid Freezer III Pro 360 at $69.89 is the cooler we’d build around, thanks to its 38 mm radiator and VRM fan. Pair it with the Thermal Grizzly Duronaut for the interface and, if your case chokes airflow, the HYXN H2 to feed it cool intake. That’s the full stack.
On a tighter budget, the ARCTIC MX-4 at $4.99 handles the paste layer safely, and the Intel stock-class cooler covers an older LGA115x revival. Decide by ambition. Mild clock, save money on paste and a modest cooler. Aggressive all-core, invest in the liquid loop and airflow. The chip only holds what the cooling lets it.
One more framing that helps. Think of these five products as a system, not five competitors. The cooler pulls heat off the die, the paste bridges the tiny gap between the die and the coldplate, and the case feeds the whole thing cool air. A weak link anywhere caps the rest. That’s why we didn’t crown a single winner and stop there. The right buy is the combination that matches how hard you plan to push the chip, not the most expensive single box on the shelf.
Common questions
Do I really need an AIO to overclock, or is air enough?
Air can handle a mild overclock on many chips, and a strong dual-tower cooler goes surprisingly far. For high-wattage all-core clocks though, a 360 mm liquid setup like the ARCTIC Liquid Freezer III Pro 360 gives you more sustained headroom. It’s about the wattage you’re pushing, not the format alone.
Does thermal paste actually affect my overclock?
Yes, though the effect is measured in a few degrees, not twenty. A high-conductivity compound like the Duronaut fills the microscopic gaps better than dried generic paste. Those few degrees can be the margin that keeps a borderline clock stable, so it’s worth doing right.
How often should I replace thermal paste?
For most users, every two to three years is plenty, and quality compounds like the MX-4 are rated for long durability. If you’re re-mounting a cooler, always apply fresh paste, since the old layer’s seal breaks when you lift the heatsink.
Will a better case actually lower my CPU temps?
It can, indirectly. A case moves cooler intake air to your cooler and clears hot exhaust, so your heatsink or radiator isn’t recirculating warm air. A high-airflow case like the HYXN H2 with eight fans can drop intake temps several degrees, which every cooler benefits from.
Is the Intel stock cooler good enough for anything?
It’s fine for a stock or lightly loaded older LGA115x chip, and at $15.99 it’s a cheap functional spare. It’s just not built for overclocking heat. Think of it as a baseline or a placeholder, not the cooler you rely on when you’re feeding a chip extra voltage.
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