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WD Blue SA510 SSD vs Crucial T700 4TB NVMe SSD

These are not rivals on the same shelf. The WD Blue SA510 is a 2TB SATA 2.5-inch drive at 560/520 MB/s; the Crucial T700 is a 4TB PCIe 5.0 NVMe drive at 12,400/11,800 MB/s. Buy the T700 for a modern desktop or laptop with an M.2 Gen 5 slot and heavy gaming or editing loads. Buy the SA510 only if you need a 2.5-inch SATA drive for an older machine or a spare bay. On price, the SA510 is $507.39 at Staples as of November 7, 2026; no price was given for the T700.

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Western Digital
WD Blue SA510 Solid State Drive

WD Blue SA510 SSD

WD Blue SA510 Solid State Drive

4.6(2,700 ratings)
$507.39at StaplesObserved Nov 7, 2026, 8:52 AM
See all prices and details
Visit Staples

Store links may earn us a commission. Price via Klarna.

Choose the WD Blue SA510 if your PC or laptop only has a 2.5-inch SATA bay, or you want a drop-in drive for an older machine without an M.2 slot.

Pros
  • Fits 2.5-inch SATA bays in older desktops and laptops
  • Silent, shock-resistant alternative to a hard drive
  • Low power draw
  • 2TB capacity in a slim 7mm body
Cons
  • SATA speed caps it near 560 MB/s
  • No NVMe or PCIe support
  • No hardware encryption
  • No DRAM cache listed
Crucial
Crucial T700 4TB Internal SSD PCIe Gen 5x4 NVMe

Crucial T700 4TB NVMe SSD

Crucial T700 4TB Internal SSD PCIe Gen 5x4 NVMe

4.4(290 ratings)
See all prices and details

Choose the Crucial T700 if your motherboard has a PCIe 5.0 M.2 slot and you want top-tier speed for games, large file transfers or video editing.

Pros
  • Reads up to 12,400 MB/s and writes up to 11,800 MB/s
  • 4TB capacity
  • 4GB LPDDR4 DRAM cache
  • Hardware encryption and an included heatsink
Cons
  • Needs a PCIe 5.0 M.2 slot to hit rated speeds
  • Heatsink adds bulk and may not fit tight laptop slots
  • Runs hot under sustained Gen 5 loads
  • Only 290 ratings, 4.4 out of 5

What separates them

WD Blue SA510 SSDCrucial T700 4TB NVMe SSD
InterfaceSATAPCIe 5.0 x4 NVMe
Sequential read560 MB/s12,400 MB/s
Sequential write520 MB/s11,800 MB/s
Capacity2TB4TB
Form factor2.5-inch, 7mm slimM.2 2280 with heatsink
DRAM cacheNot listed4GB LPDDR4
Hardware encryptionNoYes
Price$507.39 at Staples as of November 7, 2026Not given

Price history

$599.99$309.00
Nov 3Nov 7
  • WD Blue SA510 SSD: lowest $507.39 on Nov 7 at Staples.
  • Crucial T700 4TB NVMe SSD: lowest $309.00 on Nov 3 at eBay.

Prices at every store

WD Blue SA510 SSD

  • StaplesNew

    In stock

    $507.39Free shippingObserved Nov 7, 2026, 8:52 AM
    Visit Staples

Also available at

  • Best BuyCheck price at Best Buy
  • Central ComputersCheck price at Central Computers
  • DirectDialCheck price at DirectDial

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Prices and history →

Crucial T700 4TB NVMe SSD

  • CTT Home & CulinaryCheck price at CTT Home & Culinary
  • eBayCheck price at eBay
  • Microless.comCheck price at Microless.com

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Prices and history →

Specs compared

SpecWD Blue SA510 SSDCrucial T700 4TB NVMe SSD
TypeSSD, Solid State DriveSSD
UseInternalInternal
Device CompatibilityPCPC
InterfaceSATAPCIe 5.0
Read Speed560MB/s12,400 MB/s (sequential)
Write Speed520 megabytes per second11,800 MB/s (sequential)
NVMe SupportNoYes
PCIe SupportNoYes
CacheNav datu4GB LPDDR4
Data EncryptionNo (hardware encryption)Yes
Security HighlightsCyber protection softwareHardware encryption
Form Factor2.5"M.2
Show all 33 specsShow fewer specs
SpecWD Blue SA510 SSDCrucial T700 4TB NVMe SSD
Design HighlightsSlimHeatsink
Typical UsersProfessionalsGamers, Enthusiasts
Power ConsumptionLow power draw85 milliwatts (typical)
RemovableNoNo
Wireless ConnectivityNo—
DurabilityHigh endurance, Reduced vibrations compared to …—
Power Sourcedc—
M.2 Form Factor2280—
Wi-FiNo—
TBW (terabytes written) (TB)

What reviewers say

WD Blue SA510 SSD

  • 4.6 / 52,700 ratings

Owners rate it highly, mostly as a cheap way to make an old laptop or desktop feel new. Complaints center on sustained write speed and on the SATA ceiling rather than reliability.

What people mention
  • SpeedPraisedOwners say boot times and app launches improve sharply over a hard drive.
  • Sustained writesCriticisedLarge file copies slow down once the cache is exhausted.
  • InstallPraisedBuyers describe the swap into a 2.5-inch bay as quick and simple.
  • NoisePraisedUsers note the drive is silent and free of hard-drive vibration.

Crucial T700 4TB NVMe SSD

  • 4.4 / 5290 ratings

Owners rate it highly for speed and capacity, and most praise it as a fast, reliable boot and game drive. The common complaints are heat and the need for a Gen 5 platform to see the rated speeds.

What people mention
  • SpeedPraisedOwners report very fast boot, load and file transfer times.
  • HeatCriticisedReviewers say it runs hot and can throttle in sustained writes without airflow.
  • Heatsink fitMixedThe included heatsink helps cooling but its height can clash with tight builds.
  • ValueMixedBuyers note the price premium is hard to justify over Gen 4 for gaming.

Questions and answers

Which is faster?
The Crucial T700, by a wide margin. Its rated 12,400 MB/s read is about 22 times the SA510's 560 MB/s.
Will the T700 fit my laptop?
Only if the laptop has an M.2 2280 slot that accepts a heatsinked drive. Many thin laptops do not, so check clearance before buying.
Is the SA510 worth it for a new PC build?
Usually not. A new desktop or laptop almost always has an M.2 slot, where a Gen 4 or Gen 5 NVMe drive gives far more speed for the money.
Which lasts longer?
The T700 has the higher endurance rating by capacity and class, but both are rated for years of normal use. The SA510's 2TB size and SATA interface suit lighter workloads.
Is the T700 worth the extra cost?
For gaming, large file transfers and video editing on a Gen 5 slot, yes. If your board is Gen 3 or Gen 4 only, you will not see its full speed.
Can I use the SA510 as a second drive?
Yes. It is a good fit for a spare 2.5-inch bay for backups, media or older games.

More comparisons

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  • Team Group T-FORCE CARDEA A440 M.2 2280 4TB PCIe Gen 4.0 x4 NVMe 1.4 Internal Solid State Drive (SSD) vs Crucial T700 4TB Internal SSD PCIe Gen 5x4 NVMe
  • WD Blue SA510 Solid State Drive vs Seagate Nytro 5350M 3.84TB NVMe PCIe 4.0 x4 2.5in Drive
  • Crucial T700 4TB Internal SSD PCIe Gen 5x4 NVMe vs Seagate Nytro 5350M 3.84TB NVMe PCIe 4.0 x4 2.5in Drive
  • Samsung 4TB 9100 Pro with Heatsink Internal SSD Drive vs Crucial T700 4TB Internal SSD PCIe Gen 5x4 NVMe

Buying guides that pick them

  • Best budget 4TB NVMe SSDs
500
—
Depth (")3.1—
Width (")0.9—
Weight (oz)0.2—
PlacementInternal—
Size (GB)2000—
Height (")0.1—
Random Write 4KB (max) (IOPS)83000—
Sequential Write (MB/s)520—
Sequential Read (MB/s)560—
MTBF (mean time between failures) (h)1750000—
Random Read 4KB (max) (IOPS)85000—