DRAM or DRAMless SSD for gaming sounds like a tiny controller-detail debate until you price out a 2TB drive. In this matchup, the Samsung 990 PRO 2TB sits at $389.99 with a 4.2 rating and up to 7,450 MB/s sequential reads, while the WD_Black SN7100 2TB is listed at $289.99 with a 4.1 rating, up to 7,250 MB/s reads, and up to 6,900 MB/s writes. That’s a $100 gap for two Gen4 NVMe drives aimed at gaming PCs, laptops, handhelds, and heavy storage use. If you’re comparing broader options, our NVMe SSD for gaming guide and 2TB NVMe SSD roundup are useful context, but this article focuses on the DRAM-cache question itself.
Matchup at a glance
A DRAM SSD uses a small dedicated memory chip on the drive as a fast map for where data lives inside NAND. A DRAMless SSD skips that dedicated chip and usually leans on controller tricks, NAND design, firmware, and sometimes host memory buffer support over NVMe. Plain English: DRAM helps the drive keep its file-lookup table close and fast, while DRAMless designs try to get close enough without adding that hardware cost.
For gaming, the difference isn’t as simple as “DRAM equals fast and DRAMless equals slow.” Game launches, level loads, shader cache behavior, downloads, decompression, and background updates all stress storage differently. A high-end DRAM-equipped drive can still make sense for creators, heavy multitaskers, and people who move huge files. A modern DRAMless Gen4 drive can still be plenty quick for a gaming library. Small distinction. Big buying consequence.
Spec sheet showdown
| Spec | Samsung 990 PRO 2TB | WD_Black SN7100 2TB | Why it matters | Gaming takeaway |
|---|---|---|---|---|
| Drive type | NVMe M.2 PCIe Gen4, M.2 2280 | NVMe M.2 PCIe Gen4, M.2 2280 | Both fit modern desktop boards and many laptops with 2280 slots | No interface advantage by itself |
| Advertised read speed | Up to 7,450 MB/s | Up to 7,250 MB/s | Sequential read is useful for large transfers, less decisive for every game load | The gap is small on paper |
| Advertised write speed | Not listed in the provided title | Up to 6,900 MB/s | Write speed matters for installs, captures, file moves, and large updates | WD_Black states a strong write figure |
| NAND note | Not specified in the provided title | Next Gen TLC 3D NAND | TLC is the mainstream performance-focused NAND class for good consumer SSDs | Useful detail for the WD_Black side |
| Listed price and rating | $389.99, 4.2 rating | $289.99, 4.1 rating | Price delta affects GPU, RAM, and game-budget decisions | WD_Black is $100 less in this data |
DRAM SSD strengths
The case for a DRAM SSD is consistency. Dedicated DRAM gives the controller a fast local place to track logical-to-physical mapping, which can help during messy workloads: installing a large game while Windows is indexing files, copying a capture folder, running a launcher update, and leaving a browser full of tabs open. You won’t feel that in every click, but it’s the kind of behind-the-scenes stability that higher-end drives are built to protect.
That is where the Samsung 990 PRO 2TB fits as the premium representative here. Its title lists a Gen4 NVMe M.2 2280 internal SSD with sequential read speeds up to 7,450 MB/s for high-end computing, gaming, and heavy-duty workstations. At $389.99 and a 4.2 rating, it isn’t the value-first pick from this data. It’s the safer fit if the same drive will hold games, project files, virtual machines, editing caches, and frequent large transfers. Not cheap. Still logical.
DRAMless SSD strengths
The argument for DRAMless has improved because controllers, NAND, and NVMe behavior have improved. A DRAMless drive no longer has to mean bargain-bin SATA-era compromises. In a gaming desktop or handheld, much of the day-to-day experience is read-heavy: launching a game, loading a map, pulling texture data, resuming from a launcher, or patching a title through Steam or another client. If the drive is modern, roomy, and not filled to the edge, those tasks can feel very close to a pricier model.
The WD_Black SN7100 2TB is the value-side example in this comparison. Use that name, because this is a WD_Black drive, even though the data source lists the brand field differently. Its title lists Gen4 PCIe, M.2 2280, up to 7,250 MB/s read speed, up to 6,900 MB/s write speed, and Next Gen TLC 3D NAND for laptops and handheld gaming devices. At $289.99 with a 4.1 rating, it’s $100 below the Samsung in this article’s data while staying close on listed read speed.
Pros
- Rated 7,250 MB/s read and 6,900 MB/s write keeps pace with faster Gen4 drives in this tier
- Single-sided M.2 280 form factor fits handhelds like Steam Deck, ROG Ally, and Legion Go
- Up to 100% claimed power efficiency gain helps battery life on portable gaming devices
- TLC NAND at 2TB gives usable capacity for large modern game libraries
Cons
- Limited owner feedback at time of writing, so long-term reliability signal is thin
- Manufacturer does not publish TBW endurance, DRAM vs HMB design, or controller model in listing
- WD_BLACK Dashboard is Windows only, leaving Linux and SteamOS handheld users without vendor tooling
The WD_Black SN7100 2TB is a mid-range to high-end PCIe Gen4 NVMe SSD in a single-sided M.2 2280 form factor. Sandisk positions it for gamers upgrading laptops and handhelds like Steam Deck, ROG Ally, or Legion Go, rather than desktop enthusiasts chasing peak Gen5 sequential numbers.
The defining feature is the eficiency angle. Sandisk advertises up to 7,250 MB/s read and 6,900 MB/s write with up to 100% better power efficiency than the previous generation. In practice, DRAM-less HMB Gen4 drives at this tier typically deliver near-rated sequentials and strong random4K reads that matter for game load times and DirectStorage.
Trade-offs are typical at this tier and mostly around what is not disclosed. The listing does not publish TBW endurance, controller model, or confirm HMB vs DRAM, so sustained write behavior after the SLC cache exhausts is unknown from source. The WD_BLACK Dashboard is Windows only, which is a real gap for SteamOS handheld owners.
Buy this if you want a single-sided 2TB Gen4 drive for a handheld or thin gaming laptop where power draw and thickness mater more than raw peak throughput. Skip this if you are building a desktop with a Gen5 slot free, or if you need a published TBW figure for a heavy write workload.
Interface and form factor: PCIe Gen4 x4 NVMe in M.2 2280, described as built for laptops and handheld gaming devices, which implies a single-sided PCB layout. That fits Steam Deck, ROG Ally, Legion Go, and most modern ultrabook M.2 slots without clearance issues against the chassis.
Sequential throughput: Sandisk rates the 1TB and 2TB models at up to 7,250 MB/s read and 6,900 MB/s write, near the practical ceiling of the PCIe Gen4 x4 lane budget. Game load times and large asset copies should track within a few percent of higher-priced Gen4 drives at this class.
NAND and controller: The drive uses next generation TLC 3D NAND from Sandisk. Controller model, DRAM vs HMB configuration, and TBW endurance are not specified in the listing, so sustained write performance past the SLC cache and long-term wear behavior are not verifiable from source data.
Software and platform fit: WD_BLACK Dashboard on Windows handles firmware updates, health monitoring, and optimization. Linux and SteamOS users can still use the drive normally but will need third-party tools like smartctl for SMART data, since no vendor utility is offered outside Windows.
Real-world scenarios
Building a gaming-only desktop
If the SSD mostly stores Windows, launchers, and a rotating set of large games, a good DRAMless Gen4 drive is usually the better spend. You’d rather keep $100 for a GPU tier, a better monitor, or a larger secondary drive. Game load differences can exist, but they often aren’t proportional to the price gap.
Using one drive for games and content work
If you’re recording gameplay, editing clips, moving big folders, and using the same SSD as both game storage and scratch space, DRAM becomes easier to justify. Sustained mixed activity is where premium drives make more sense. You’ll appreciate fewer slow moments when several storage jobs pile up at once.
Upgrading a laptop or handheld
For a laptop or handheld gaming device, the WD_Black SN7100’s title specifically calls out laptops and handheld gaming devices, which makes it relevant for that use. Capacity, thermals, and physical M.2 2280 compatibility matter more than chasing the last few hundred MB/s. Check your device’s slot size first. Seriously.
Keeping a drive nearly full
Any SSD can slow down when it’s nearly full, especially during updates that need temporary unpacking space. DRAM can help with mapping work, but it doesn’t repeal NAND behavior or free-space limits. Try to keep meaningful headroom, particularly on a 2TB drive loaded with 150GB-plus games.
Pricing and availability
Based on the provided prices, the Samsung 990 PRO 2TB costs $389.99 and the WD_Black SN7100 2TB costs $289.99. That’s not a tiny spread. It’s the kind of difference that can cover a better CPU cooler, another game, or part of a RAM upgrade, which is why storage shopping should tie back to the whole build instead of a single spec line.
Availability also changes SSD math fast. If a premium drive drops close to the DRAMless model during a sale, buying the higher-end option can be easy. If the gap remains around $100, value leans toward the WD_Black SN7100 for most gaming-focused builds. For deal watching across other capacity and interface classes, our SSD deals page and budget SSD guide are better places to compare current alternatives.
Which to buy
Buy a DRAM SSD like the Samsung 990 PRO 2TB if your gaming PC also handles workstation-style storage work. Its up to 7,450 MB/s sequential read figure, Gen4 M.2 2280 form factor, and high-end positioning fit users who don’t want the SSD to be the weak link during large file movement, installs, captures, and multitasking. We’ve seen this pattern across enthusiast builds: the expensive drive is easier to defend when it serves more than a Steam library.
Buy the WD_Black SN7100 2TB if the main goal is fast, roomy game storage at a lower price. Its listed up to 7,250 MB/s read speed and up to 6,900 MB/s write speed are strong for a Gen4 gaming drive, and its $289.99 price is meaningfully lower in the supplied data. That’s the answer for most players. If you aren’t hammering the drive with creator workloads, you probably won’t miss dedicated DRAM enough to pay the full gap.
Pros
- Rated 7,450 MB/s sequential read pushes close to the PCIe Gen4 x4 ceiling for game loads.
- Rated 6,900 MB/s sequential write helps large file transfers and 4K editing scratch workflows.
- Samsung claims 55 percent random IOPS uplift vs the 980 PRO, benefiting bot and app launch responsiveness.
Cons
- Limited owner feedback available at time of writing, so long-term reliability signal remains thin.
- TBW endurance rating not specified in listing, worth confirming for sustained write workloads.
- No heatsink on this SKU, sustained Gen4 writes may need a motherboard M.2 cooler to avoid throttling.
The Samsung 990 PRO 2TB is a high-end PCIe Gen4 NVMe SSD in the M.2 2280 form factor, rated up to 7,450 MB/s sequential read and 6,900 MB/s sequential write. It targets desktop gamers, PS5 upgraders, and content creators who want Gen4 headroom without stepping up to a Gen5 drive.
The defining pitch is near-ceiling Gen4 bandwidth paired with a claimed 55 percent uplift in random IOPS over the 980 PRO. In practice, drives at this tier typically shave a second or two off open-world level loads and accelerate DirectStorage titles, though real-world gaming deltas over solid Gen4 rivals remain modest.
Gen4 flagships like this tend to run hot under sustained sequential writes, and the bare version without a heatsink relies on motherboard M.2 cooling to hold peak speeds. TBW endurance is not specified in the listing, so buyers running heavy write workloads should confirm the rating from Samsung's own datashet.
Buy this if you want a top-shelf Gen4 drive for a gaming PC, editing rig, or PS5 with a well-cooled M.2 slot. Skip this if you already own a fast Gen4 SD, need Gen5 bandwidth for scratch work, or want a factory heatsink model included in the box.
Sequential throughput: Samsung rates the 990 PRO at up to 7,450 MB/s sequential read and 6,900 MB/s sequential write over PCIe Gen4 x4. That is close to the practical Gen4 x4 ceiling near 7,500 MB/s, so large file copies are limited more by the source disk than by this drive.
Random performance: The listing calls out a 55 percent improvement in random performance versus the 980 PRO. Random 4K IOPS drives OS snappiness, shader cache loads, and small file operations, so the uplift matters more day to day than the sequential headline for most users.
Form factor and platform: The drive uses M.2 2280 single-sided layout and PCIe Gen4 x4, dropping into standard desktop M.2 slots, most Gen4 laptops, and the PS5 storage bay. Capacity spans 1TB to 4TB in the family, with this SKU at 2TB for a balanced game library.
Power and thermals: Samsung claims up to 50 percent better performance per wat versus the 980 PRO, helping in fanless laptop bays and compact ITX builds with limited airflow. Under sustained writes, this bare version benefits from a motherboard M.2 heatsink to avoid thermal throttling on long transfers.
Common questions
Does DRAM matter for gaming load times?
It can, but it’s rarely the only factor. Game load times depend on the game engine, CPU decompression, launcher behavior, free space, SSD controller, NAND, and firmware. A modern DRAMless Gen4 drive can feel quick in normal gaming. DRAM matters more when gaming overlaps with heavier storage work.
Is the WD_Black SN7100 a bad choice because it is cheaper?
No. In the provided data, the WD_Black SN7100 2TB still lists Gen4 PCIe, M.2 2280, up to 7,250 MB/s reads, up to 6,900 MB/s writes, and TLC 3D NAND. The lower $289.99 price just makes it the value-side pick here. Cheaper doesn’t automatically mean wrong.
Why would anyone pay more for the Samsung 990 PRO?
The Samsung 990 PRO 2TB makes more sense when the SSD is part of a high-end, mixed-use system. If you’re gaming, recording, editing, moving big files, and using workstation apps, consistency is worth more. Its listed up to 7,450 MB/s read speed and premium positioning fit that buyer.
Should I choose a bigger DRAMless SSD or a smaller DRAM SSD?
For gaming, capacity often wins. A larger drive with enough free space can be more pleasant than a smaller premium drive that’s constantly full. If your budget forces the choice, we’d usually take a roomy modern NVMe drive for a game library. Keep backups for anything important, of course.
Do SATA SSDs still make sense for games?
They can still work, especially as secondary storage, but Gen4 NVMe drives are now common and much faster on paper. If your motherboard supports M.2 NVMe, that’s where we’d start for a new gaming drive. SATA is more of a compatibility or reuse option. Fine, just not the first pick for a fresh build.
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