-
Performance depends on what you're doing. I'm assuming you just need fast sequential read/write for ingesting and editing large video files? If so, you'll get ~6GB/s read and ~4GB/s write out of the 7.68TB PM9A3, sustained, across the entire drive, with no slowdown.
The Corsair you posted will likely have a small amount of SLC cache which will give faster writes for the first few GB, then drastically slow down. This is where consumer drives fall down; their firmware and cache structure is set up for blazing-fast burst performance for small chunks of data, not continuous sustained performance.
Write endurance is another factor; look up and compare the DWPD rating for the drives you're considering. The higher the number, the longer the drive will last. Enterprise/datacentre drives are over-provisioned, meaning that 7.68TB PM9A3 drive actually has 8TB of functional flash capacity, but uses 'hidden' capacity to facilitate much more effective wear-levelling and garbage-collection algorithms to prolong the life of the flash cells. I think the Corsair you're looking at has something like a 10x lower DWPD rating than the Samsung, which speaks volumes (and the PM9A3 is a low-end enterprise drive).
Note that if you're after maximum speed, then 2x 3.84TB drives in a RAID0 array will nigh-on double your sequential performance. Caveats: both drives must have unfettered, full-fat PCIe lanes direct to CPU, in your case via a bifurcation riser card as previously mentioned.
You are reading a single comment by @ectoplasmosis and its replies.
Click here to read the full conversation.
ectoplasmosis
CYOA
Thank you. Last one - would one perform better than the other? E.g. am I hobbling the Corsair to the same speed as the u.2 (which presumably fits in a completely different slot on the mobo based on shape?)