They're both QLC-based, both have DDR3 DRAM, and very similar read/write performance. However, the Intel 665p slightly outperforms the Crucial P1 in just about every measurable metric. The cherry on top is the 665p's 50% write endurance advantage over the 200TBW endurance of the Crucial P1. For the same price, gotta go with Intel 665p over Crucial P1.
However, I wouldn't recommend either of these. $100 USD is still within range of TLC-based drives with massive endurance and moderate performance uplift over QLC-based drives. For example, the WD SN550 1TB is a TLC-based, DRAMless NVMe SSD w/ HMB (granted you're on Win10) and it handily outperforms both[tweaktown.com] while doubling (or tripling the Crucial P1) their write endurance. We also occasionally see the Inland Premium 1TB NVMe SSD drop into the $99 USD range, which spanks all of the above.
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They're both QLC-based, both have DDR3 DRAM, and very similar read/write performance. However, the Intel 665p slightly outperforms the Crucial P1 in just about every measurable metric. The cherry on top is the 665p's 50% write endurance advantage over the 200TBW endurance of the Crucial P1. For the same price, gotta go with Intel 665p over Crucial P1.
However, I wouldn't recommend either of these. $100 USD is still within range of TLC-based drives with massive endurance and moderate performance uplift over QLC-based drives. For example, the WD SN550 1TB is a TLC-based, DRAMless NVMe SSD w/ HMB (granted you're on Win10) and it handily outperforms both [tweaktown.com] while doubling (or tripling the Crucial P1) their write endurance. We also occasionally see the Inland Premium 1TB NVMe SSD drop into the $99 USD range, which spanks all of the above.