WD PC SN530 512GB NVMe SSD vs WD_BLACK SN770 2TB NVMe SSD
Buy the WD_BLACK SN770 if you want speed and capacity for gaming or large files; it is the faster, roomier drive. Buy the SN530 512GB only if you need a cheap small boot drive or a short M.2 2230 card for a compact laptop. The SN770 2TB is listed at $145.98, and no price was given for the SN530 512GB.
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WD PC SN530 512GB NVMe SSD
Western Digital PC SN530 512GB M.2 2230 NVMe Internal SSD
Choose the SN530 512GB if you need a low-cost, low-power M.2 2230 drive for a thin laptop or a small secondary build.
- Low active power draw of 75 mW suits battery-limited laptops.
- 2230 length fits compact devices where 2280 cards will not.
- Cheap way to add a small boot or cache drive.
- Runs cool and needs no heatsink.
- 512GB fills fast with modern games.
- 950 MB/s writes are slow for large file transfers.
What separates them
| WD PC SN530 512GB NVMe SSD | WD_BLACK SN770 2TB NVMe SSD | |
|---|---|---|
| Capacity | 512GB | 2TB (listing also states 1TB in places) |
| Sequential read | 2,400 MB/s | 5,150 MB/s |
| Sequential write | 950 MB/s | 4,900 MB/s |
| Interface generation | PCIe Gen3 x4 NVMe | PCIe Gen4 x4 NVMe |
| Form factor | M.2 2230 (listing says 2280) | M.2 2280, single-sided |
| Power draw | 75 mW active, 3.3 V | Higher; needs heatsink-free airflow in laptops |
| Caching | 256 MB DRAM-less HMB cache | nCache 4.0, no DRAM |
| Hardware encryption |
Price history
- WD PC SN530 512GB NVMe SSD: lowest $149.99 on Oct 28.
- WD_BLACK SN770 2TB NVMe SSD: lowest $145.98 on Oct 28.
Specs compared
| Spec | WD PC SN530 512GB NVMe SSD | WD_BLACK SN770 2TB NVMe SSD |
|---|---|---|
| Type | SSD | NVMe SSD |
| Use | Internal | Internal |
| Device Compatibility | PC, Laptop | PC |
| Interface | NVMe | NVMe |
| Wireless Connectivity | No | No |
| Read Speed | 2400 MB/s | 5,150 MB/s |
| Write Speed | 950 MBps | 4900 |
| NVMe Support | Yes | Yes |
| PCIe Support | Yes | Yes |
| Cache | 256 MB | nCache 4.0 Technology |
| Form Factor |
What reviewers say
WD PC SN530 512GB NVMe SSD
Owner feedback on the SN530 is limited but generally positive where it appears in prebuilt laptops and mini-PCs. Buyers treat it as a reliable everyday boot drive rather than a performance part. Complaints center on write speed and on the DRAM-less design under heavy loads.
- Read speedPraisedOwners say boot and app loads feel fast for a budget drive.
- Write speedCriticisedLarge transfers are held back by the 950 MB/s write rating.
- Sustained performanceCriticisedThe DRAM-less design and small cache cause slowdowns on long writes.
Questions and answers
- Which is better for gaming?
- The SN770. Its Gen4 speeds and 2TB capacity cut load times and hold far more games than the 512GB SN530.
- Which lasts longer?
- The SN770 has the higher endurance rating because of its larger capacity and newer design. The SN530's small size means fewer total writes before wear.
- Is the SN770 worth the extra money?
- Yes for games and large files. At $145.98 it costs more than the SN530, but you get about four times the capacity and much faster writes.
- Will the SN530 fit a Steam Deck or thin laptop?
- Yes, its 2230 length fits those slots. Check your slot length first, since the listing also says 2280.
- Does the SN770 work in a PCIe Gen3 laptop?
- Yes, it is backward compatible, but it will run near Gen3 speeds of about 3,500 MB/s rather than 5,150 MB/s.
- Do either have DRAM?
- No. Both use host memory buffer caching instead of a dedicated DRAM chip.
More comparisons
- Silicon Power P34A60 1TB NVMe PCIe Gen3x4 M.2 2280 Internal Solid State Drive vs Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD
- ADATA SU650 512GB Internal SSD vs Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD
- Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD vs SanDisk Optimus 5100
- Western Digital Blue SN5100 1TB Internal Solid State Drive vs Western Digital PC SN530 512GB M.2 2230 NVMe Internal SSD
