Two terabytes is where most upgrades land when an old laptop drive, a full game library or a slow desktop finally needs replacing. What’s different in 2026 is the price order. When we pulled Amazon’s catalog in October, the cheapest name-brand Gen 4 NVMe drive we’d buy at 2TB, an import offer, cost a little over half as much as Samsung’s best 2TB SATA drive. The old rule that SATA is the budget choice now holds only at the very bottom of the market.
This guide picks three 2.5-inch SATA SSDs for laptops, older desktops and drive bays that can’t take M.2, and three M.2 NVMe drives for everything else. Speeds, endurance and warranty come from each maker’s datasheet, controller and flash details from independent reviews, and prices from Amazon’s catalog. We did not benchmark the six drives. This update re-checks every spec and price in October 2026, and the speed and wear numbers you’ll see further down come from two SATA and two NVMe drives in our Proxmox lab.
Choosing a 2TB SSD at a glance
Every pick below links to the 2TB listing of that exact model. If your machine has a free M.2 slot, start with the NVMe half of the list, because that’s where the value is this year:
- Best 2TB SATA SSD: Samsung 870 EVO 2TB, TLC flash, a 2GB DRAM cache and 1,200 TBW
- Budget SATA sold by Amazon: PNY CS900 2TB, about half the 870 EVO’s price
- Budget SATA from the maker’s store: Silicon Power Ace A55 2TB, rated for 600 TBW
- Best value 2TB NVMe: Lexar NM790 2TB, TLC flash and 1,500 TBW for less than its list price
- Best budget 2TB NVMe: Crucial P310 2TB, Gen 4 speed on QLC flash
- Best for heavy writes: Samsung 990 PRO 2TB, the only NVMe pick with its own DRAM cache
If you only remember one thing from this page, make it the Crucial P310 line. It cost about $127 per terabyte when we checked, against roughly $234 for the 870 EVO, and it reads more than ten times faster on paper. Long writes narrow the gap, though. Once its cache runs out, Tom’s Hardware measured the 2TB P310 at 337 MB/s on average, while Samsung rates the 2TB 870 EVO at 530 MB/s even after its TurboWrite cache fills. For most desktops and laptops the NVMe drive is still the better buy, but if your work is hours of sustained writes, the SATA premium does buy you something.
Picking the drives on this list
We started from the searches that bring readers here (“2tb internal ssd”, “2tb solid state drive”, “2.5 sata ssd”) and from what Amazon actually sells new today. A drive made the list only when it passed all of these checks:
- sold new at 2TB, not only used or renewed
- specs published on the maker’s datasheet or product page
- an independent review or teardown for anything the maker leaves out
- a price that still made sense next to the other five
Those checks cut some familiar names. The Crucial MX500 2TB, the SATA drive most older guides recommend, showed only a used offer in the buy box. The cheapest SanDisk SSD Plus 2TB offer turned out to be a renewed unit, and the new one cost about $299 when we checked, more than the PNY or the imported P310. The TeamGroup Vulcan Z 2TB came only from a third-party seller. It’s now rated for 400 TBW, below the PNY at the same price. The Crucial E100 2TB, a Gen 4 drive at about $250, is rated for only 100 TBW with a three-year warranty per retailer listings. Samsung’s QLC 870 QVO 2TB cost about $20 more than the TLC 870 EVO when we checked, which leaves no reason to buy it. The WD Blue SA510 2TB and Crucial BX500 2TB were third-party listings at prices above the PNY, and Kingston’s KC600 2TB was only offered to business accounts. All six picks are client drives without power-loss protection. If you’re buying for a production server or a ZFS pool that takes heavy sync writes, you need PLP instead, which is what the server and homelab SSD guide covers.
Comparing 2TB internal SSDs: SATA vs NVMe
DRAM, flash type and the TBW rating decide how your drive behaves after its fast cache fills and how long the warranty lasts. That’s why they sit next to the headline speeds:
| Drive (2TB) | Interface | DRAM | NAND | Seq read / write (MB/s) | TBW | Warranty | Price band |
|---|---|---|---|---|---|---|---|
| Samsung 870 EVO | SATA 6 Gb/s | 2GB LPDDR4 | Samsung TLC | 560 / 530 | 1,200 | 5 years | $450 to $500 |
| PNY CS900 | SATA 6 Gb/s | Not published | Not published | 550 / 530 | 540 | 3 years | $220 to $250 |
| Silicon Power Ace A55 | SATA 6 Gb/s | Not published | Not published | 500 / 450 | 600 | 3 years | $230 to $250 |
| Lexar NM790 | PCIe 4.0 x4 | None (HMB) | YMTC 232-layer TLC | 7,400 / 6,500 | 1,500 | 5 years | $320 to $350 |
| Crucial P310 | PCIe 4.0 x4 | None (HMB) | Micron 232-layer QLC | 7,100 / 6,000 | 440 | 5 years | $250 to $260 (import) |
| Samsung 990 PRO | PCIe 4.0 x4 | 2GB LPDDR4 | Samsung TLC | 7,450 / 6,900 | 1,200 | 5 years | $400 to $420 |
Read the TBW column before the speeds. Three drives carry a rating of 1,200 TBW or more, then the Silicon Power A55 at 600, the PNY at 540 and the P310 at 440. PNY keeps its figure in a warranty PDF rather than on the product page, which is easy to miss. If your desktop writes a few hundred gigabytes a week, 440 TBW still lasts well past the five-year warranty, so it is not a reason to skip the P310. It matters on a machine that records video or hosts VMs, and that’s where the 990 PRO or the NM790 earns its higher price.
1. Samsung 870 EVO: best 2TB SATA SSD
When the machine only has a 2.5-inch bay and you want the drive you’ll never have to think about again, this is the one to buy.
Samsung’s datasheet lists its MKX controller, three-bit TLC V-NAND and a 2GB LPDDR4 cache on the 2TB model, rated at 560 MB/s read and 530 MB/s write with 1,200 TBW and a five-year warranty. The footnote that matters is about sustained writes. Smaller 870 EVOs drop to 300 MB/s once the TurboWrite cache fills. Samsung rates the 1TB, 2TB and 4TB models at 530 MB/s even after it, so when you copy a whole photo library onto the 2TB drive, the speed does not fall off a cliff halfway through. It also supports AES 256-bit hardware encryption and TCG Opal.
Buy it for: laptops and older desktops that need a 2.5-inch drive, and a homelab NAS bay, backed up elsewhere, where a DRAM-equipped TLC drive behaves predictably. Pass on it if you have an M.2 slot. At the price we saw, the 990 PRO costs less per terabyte than this SATA drive, and the imported P310 costs a little over half as much.
Amazon sold and shipped it for about $450 to $500, so check the live price before you buy. The listing’s struck-through “list price” is not a meaningful discount, so compare it with the other five instead.
2. PNY CS900: budget SATA from Amazon
The CS900 is the cheapest 2TB SATA drive we found that Amazon sells and ships itself, which makes returns simple if a drive arrives dead.
PNY’s sell sheet rates the 2TB model (SSD7CS900-2TB-RB) at 550 MB/s read and 530 MB/s write, with a three-year warranty “or TBW”. The TBW lives in PNY’s SSD warranty document instead, which lists the 2.5-inch CS900 2TB at 540 TBW. What PNY doesn’t say is which flash the drive uses or whether there’s a DRAM cache, and that’s the real cost of the low price. Budget SATA drives like this one change components between production runs, so a review of a CS900 bought two years ago tells you little about the one that ships today. If the drive holds a game library or a second copy of your photos, that uncertainty is fine. For the only copy of anything, it is not.
Good for: replacing a hard drive in an old laptop or adding bulk storage to a desktop on a tight budget. Look elsewhere if the drive will take constant writes, such as a VM datastore or a download box, because you don’t know what flash you’re getting and 540 TBW is the lowest SATA rating here.
Expect about $220 to $250, which works out to roughly $117 per terabyte when we checked. Confirm the live price on the listing.
3. Silicon Power Ace A55: budget SATA, 600 TBW
The A55 costs about the same as the PNY, carries the higher endurance rating of the two, and the listing is sold by Silicon Power’s own store.
Silicon Power rates the 2TB A55 at 500 MB/s read and 450 MB/s write with a three-year warranty, and its SSD TBW table lists the 2TB model at 600 TBW. Those speeds are the lowest of the three SATA picks, but a gap of a few dozen MB/s on reads and 80 MB/s on writes is hard to notice in a laptop. Like PNY, Silicon Power names only generic 3D flash (“3D NAND”) and says nothing about DRAM. A 2023 ssd-tester.com sample used TLC flash on a Phison controller with an SLC cache above 250 GB. That test listed 1,000 TBW where Silicon Power now says 600. The Amazon part number (SU002TBSS3A55S25EC) also differs from the tested one. Treat that review as history, not a description of the drive you’ll receive.
Pick it for: a laptop, an older desktop or a bulk game drive where you’d rather have a written endurance figure and a maker-run seller than the last few MB/s. Skip this one when you want a known flash type. Neither budget SATA pick discloses it, and only the 870 EVO does.
Our check found it at about $230 to $250, within a few cents of the PNY. Check the live listing, and confirm the seller is still Silicon Power before you order.
4. Lexar NM790: best value 2TB NVMe
The NM790 gives you TLC flash and the highest endurance rating on this list for well under the price of the Samsung drives.
Lexar rates the 2TB NM790 at 7,400 MB/s read, 6,500 MB/s write and 1,500 TBW with a five-year warranty, and lists it as PS5 compatible. It has no DRAM of its own. Instead it uses HMB 3.0, borrowing a small slice of your system RAM for its mapping table. The nikktech teardown shows a MaxioTech MAP1602 controller with YMTC 232-layer TLC flash. Lexar’s own list price for this part is $449.99, so the Amazon price we saw was more than $100 under it.
Best fit: desktops and laptops where you want TLC endurance without paying for a DRAM cache. For a PS5, think twice: Sony’s install guide says the console needs a heatsink or heat transfer sheet on the drive and does not support HMB, so this bare, DRAM-less drive needs a heatsink added and may run slower there than its rating. The catch: HMB drives slow down more under long, mixed writes than a DRAM drive does, so a machine that compiles or edits video all day is better served by the 990 PRO.
The listing, sold by Amazon with limited stock left, sat in the $320 to $350 range. Check the live price, since low-stock listings tend to jump.
5. Crucial P310: best budget 2TB NVMe
The P310 is the drive that broke the price order: through the import offer, a Gen 4 NVMe SSD that cost within about $20 of the cheapest 2TB SATA drive Amazon sells itself when we checked.
Crucial rates the 2TB 2280 model (CT2000P310SSD801 on the linked listing) at 7,100 MB/s read and 6,000 MB/s write, with 440 TBW and a five-year warranty on its product page. Under the label there’s a DRAM-less Phison E27T controller and Micron 232-layer QLC flash, four bits per cell, the densest cell type in consumer drives. Tom’s Hardware measured an SLC cache of about 400GB on an empty 2TB drive, then 337 MB/s on average once it ran out. That cache is dynamic and shrinks as the drive fills, so on a nearly full P310 a much smaller copy drops to QLC speed. Keep some free space and everyday installs and game downloads stay in the fast part.
It suits: a gaming PC, a laptop upgrade or a second drive where cost per terabyte comes first. Not for you if the drive will host VMs, a busy database or long video ingests. Its 440 TBW is about a third of what the NM790 and 990 PRO offer, and after the cache it writes slower than the 870 EVO.
The linked listing ran about $250 to $260 when we checked, roughly $127 per terabyte, but that offer ships from Amazon’s German store, so look at the delivery estimate. A domestic third-party listing for the same drive asked about $316.
6. Samsung 990 PRO: best for heavy writes
Buy the 990 PRO when the drive will work hard every day: VMs, builds, video projects or a workstation that never sleeps.
Samsung’s datasheet lists an in-house controller, TLC V-NAND and a 2GB LPDDR4 cache on the 2TB model, rated at 7,450 MB/s read, 6,900 MB/s write and 1,200 TBW with a five-year warranty. The DRAM cache is why it holds up under mixed load. The drive keeps its whole mapping table on board instead of asking your system for memory. Random reads stay quick even while a long write is running. Samsung also lists the PS5 as a supported use, but Sony requires a heatsink or heat transfer sheet on the drive, and the linked SKU is the bare drive, so add one or buy Samsung’s heatsink version for a console. It works in Gen 3 slots at Gen 3 speed.
Who it’s for: workstations, homelab Proxmox or Hyper-V hosts whose VMs are backed up elsewhere, and anyone editing large video files. Pass on it if the drive mostly holds games and documents. The P310 does that job for about $150 less through the import offer, or about $94 less from the domestic listing.
Amazon sold it directly for about $400 to $420. For the Gen 5 drives that now sit near that price, see our Gen 4 and Gen 5 NVMe SSD guide.
Choosing SATA or NVMe for 2TB
Choose by the connector your machine has first, then by price. SATA is the right answer for you in only a few situations now:
- a laptop with a 2.5-inch bay and no M.2 slot
- a desktop board from before M.2 became standard
- a NAS, server or mini PC whose free bays are all SATA
- an external USB enclosure you already own
Even on old hardware, the speed gap is real. We ran hdparm -t three times on each drive in two of our Proxmox hosts. A Samsung 850 EVO SATA SSD read at 495 to 508 MB/s, close to the SATA link’s ceiling. A Samsung 980 NVMe drive in the same box, a Gen 3 drive on a PCIe Gen 3 x4 link, read at 1,294 to 1,306 MB/s. On the second host the gap was wider: 327 to 447 MB/s from an ADATA SU800 SATA drive against 2,285 to 2,389 MB/s from a Samsung SM961 NVMe. hdparm -t is a single-threaded sequential read, and both hosts were running VMs, so it understates NVMe. The order never changed, though.
The hdparm package is in every major distro’s repository if your system doesn’t have it yet. This is the loop we ran on the first host, three reads of the 850 EVO and then three of the 980:
for d in /dev/sda /dev/nvme0n1; do for i in 1 2 3; do sudo hdparm -t $d | tail -1; done; doneThe SATA drive tops out just above 500 MB/s, and the NVMe drive more than doubles it:
Timing buffered disk reads: 1524 MB in 3.00 seconds = 507.85 MB/sec
Timing buffered disk reads: 1500 MB in 3.00 seconds = 499.74 MB/sec
Timing buffered disk reads: 1484 MB in 3.00 seconds = 494.65 MB/sec
Timing buffered disk reads: 3900 MB in 3.00 seconds = 1299.84 MB/sec
Timing buffered disk reads: 3918 MB in 3.00 seconds = 1305.57 MB/sec
Timing buffered disk reads: 3884 MB in 3.00 seconds = 1294.07 MB/secIf you’re moving an existing install onto the new drive, clone it first with Clonezilla and keep the old disk untouched until the new one boots. An NVMe drive can also sit in a USB enclosure for the copy, and the M.2 and SATA enclosure picks list ones that pass TRIM through.
Reading TBW, DRAM and warranty terms
Spec sheets for 2TB drives look alike until you read the four lines that decide how the drive ages:
- TBW, the terabytes you can write before cover ends
- DRAM on the drive, or HMB borrowing your system RAM
- TLC or QLC flash, three or four bits per cell
- the seller, Amazon or a third party
Samsung and Crucial word their warranties as a number of years or the TBW limit, whichever comes first. PNY’s sell sheet says “3-Year Limited Warranty or TBW” and Silicon Power’s product page says the warranty “is based on the TBW or Warranty period”. The TBW figure is part of the warranty, not a guess at lifespan. Look for it even when the maker tucks it into a separate document, as PNY and Silicon Power both do. DRAM matters more on SATA than on NVMe, because SATA has no HMB equivalent. A DRAM-less SATA drive keeps its map in a small buffer inside the controller and slows down on random work. Our NVMe vs SATA datastore comparison goes deeper into endurance for VM hosts, and the Proxmox NVMe picks add power-loss protection to the list.
Tracking SATA SSD wear with smartctl
Once the new drive is in, check its wear every few months, because a SATA SSD reports it in vendor attributes rather than a single percentage. Install smartmontools from your distro’s repository, then read the attribute table:
sudo smartctl -A /dev/sdaOn our Proxmox host’s boot drive, a Samsung 850 EVO 250GB with 25,615 power-on hours, these are the lines that count:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
9 Power_On_Hours 0x0032 094 094 000 Old_age Always - 25615
177 Wear_Leveling_Count 0x0013 082 082 000 Pre-fail Always - 363
199 CRC_Error_Count 0x003e 093 093 000 Old_age Always - 6503
241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 47245897663Multiply Total_LBAs_Written by the 512-byte sector size and this drive has taken 24.2 TB of writes in about 2.9 years, 32% of the 75 TBW Samsung rates the 250GB model for. Samsung’s normalized Wear_Leveling_Count starts at 100 and now reads 82, so about 18% of the flash’s rated program and erase cycles are gone. The TBW figure is the more conservative of the two, and it’s the one your warranty follows. The CRC_Error_Count of 6,503 isn’t wear at all. CRC errors are counted on the SATA link, so a rising number points at a loose or cheap cable rather than a dying drive. Swapping the cable is the fix.
Other controllers name things differently. Our second host runs an ADATA SU800 1TB in a ZFS pool that holds VM disks, and it reports host writes and flash writes separately in 32 MiB units:
169 Remaining_Lifetime_Perc 0x0000 100 100 000 Old_age Offline - 70
241 Host_Writes_32MiB 0x0000 100 100 000 Old_age Offline - 1714099
245 TLC_Writes_32MiB 0x0000 100 100 000 Old_age Offline - 6529056That works out to 57.5 TB sent by the host and 219.1 TB written to the flash, a write amplification of about 3.8. Small random VM writes through ZFS cost the drive almost four bytes of flash wear for every byte the host asked for. That is why the TBW column above matters more than the speed column if you run VMs. With 70% of its life left after three years, this drive is fine for a lab. For a ZFS pool that holds production VMs, skip every client drive on this list and pick an enterprise SSD with power-loss protection from the server and homelab SSD guide.
