Which is better for gaming?

The SN7100 is the gaming-labeled drive and has slightly higher rated speeds and TLC flash. In practice both load games at Gen 4 speed, so the SN5100 is fine if you want to save money.

Is QLC a problem on the SN5100?

QLC is slower than TLC when you write very large files for a long time, because the cache runs out. For normal use, games and everyday files, the difference is small.

Both are rated at 600TB written, so endurance is the same on paper. The SN7100's TLC flash may hold up better under heavy sustained writes.

Is the SN7100 worth the extra $9?

Yes if you do heavy sustained writes or want TLC. No if you mainly game and browse, where the SN5100 performs about the same.

Do both fit a PS5 or a laptop?

Both are M.2 2280, single-sided and PCIe 4.0, so they fit most compatible laptops and a PS5. Check your device's slot length and heatsink clearance first.

WD Blue SN5100 1TB SSD vs WD_BLACK 1TB SN7100 NVMe Internal SSD

Both are 1TB PCIe 4.0 M.2 drives with 600TB endurance, so the choice comes down to NAND type and price. The WD_BLACK SN7100 uses TLC and is slightly faster on paper; the WD Blue SN5100 uses QLC and costs less. At the latest prices, the SN5100 is $170.99 at AAAWave as of November 6, 2026, and the SN7100 is $179.99 at eBay as of the same date. Buy the SN5100 to save about $9, and the SN7100 if you want TLC and the higher rated speeds.

Today the WD Blue SN5100 1TB SSD costs $28.01 less at its best price.

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