Samsung 870 EVO
Score: 79/100
WD_BLACK SN770
Score: 80/100Rankings
The WD_BLACK SN770 2TB is a DRAM-less PCIe Gen4 SSD delivering up to 5150 MB/s reads and 4850 MB/s writes with a robust 1200 TBW endurance. Its budget-friendly price and low power draw come at the cost of no onboard DRAM and no included heatsink, which can limit sustained performance under heavy loads. Ideal for gamers and mainstream builders seeking fast sequential performance without the premium price.
The Samsung 870 EVO 1TB SATA SSD delivers top-tier SATA performance, a dedicated DRAM cache and strong endurance in a compact 2.5" form factor. It is limited by the SATA III interface and can see latency spikes under heavy sustained writes. Best suited for users upgrading laptops or desktops who need reliable, high-capacity SATA storage.
| Attribute | | |
|---|---|---|
1 GB | 2,000 GBbest | |
560 MB/s | 5,150 MB/sbest | |
530 MB/s | 4,850 MB/sbest | |
98,000 IOPS | 650,000 IOPSbest | |
88,000 IOPS | 800,000 IOPSbest | |
600 TB | 1,200 TBbest | |
1,500,000 hoursbest | — | |
1,024 MBbest | 0 MB |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Connectivity(1) | ||
Interface | SATA III | PCIe Gen4 x4 NVMe 1.4 |
Performance(5) | ||
Sequential Read Speed (MB/s) | 560 MB/s | 5150 MB/s |
Sequential Write Speed (MB/s) | 530 MB/s | 4850 MB/s |
Random Read IOPS (4K) (IOPS) | 98000 IOPS | 650000 IOPS |
Random Write IOPS (4K) (IOPS) | 88000 IOPS | 800000 IOPS |
DRAM Cache (MB) | 1024 MB | 0 MB |
Storage(2) | ||
Storage Capacity (GB) | 1 GB | 2000 GB |
NAND Type | 3-bit MLC (TLC) | TLC |
General(1) | ||
Warranty (years) | 3 years | 5 years |
Reliability(1) | ||
Total Bytes Written (Endurance) (TB) | 600 TB | 1200 TB |
Power & Reliability(1) | ||
Idle Power Consumption (W) | 0.03 W | 0.0033 W |
Design & Build(3) | ||
Form Factor | 2.5-inch | M.2 2280 |
Weight (g) | 86 g | 5.5 g |
Dimensions (L×W×H) (mm) | 100.08x70.10x6.86 mm | 80x22x2.4 mm mm |
Products in the top-left offer the best value (high score, low price).
Reviewers consistently describe the 870 EVO as the pinnacle of SATA SSD performance, applauding its ability to hit the full 560/530 MB/s sequential ratings and its markedly improved QD1 random reads. They also commend its endurance and the inclusion of DRAM, while noting that the drive remains bound by SATA's bandwidth ceiling and offers few architectural leaps over the 860 EVO.
Consumers love the noticeable boost in boot speed, the silent operation, and the ease of use provided by Samsung Magician. The most common complaints revolve around occasional compatibility tweaks on older hardware, the lack of flashy pricing incentives, and the perception that the performance gains are modest compared to a jump to NVMe.
Professional reviewers regard the WD_BLACK SN770 as a compelling budget-friendly PCIe Gen4 SSD that punches above its weight class, delivering flagship-like sequential speeds and solid endurance while keeping costs low. They commend its value, fast load times, and low power draw, but warn that the DRAM-less design and lack of a heatsink could limit sustained performance in demanding scenarios.
General users praise the drive for its rapid game loading, smooth everyday performance, and easy installation, seeing it as a solid value for a 2 TB capacity. Recurring concerns revolve around thermal throttling without a heatsink and occasional slowdowns during long write operations, especially for those expecting flagship-level consistency.
“fastest SATA SSD yet”
“fast boot times”
“Fast game loading and smooth performance in PCs/PlayStation 5”
