5 ms·
These sequential write numbers are for small writes. For large writes both 970 Pro and 980 Pro have a performance drop (don't know how Optane behaves here). The
by frant-hartm 6y ago
These sequential write numbers are for small writes. For large writes both 970 Pro and 980 Pro have a performance drop (don't know how Optane behaves here). The 970 Pro dropped to around 2000 MB/s, for the new 980 Pro the performance drop will be even larger due to using TLC (3 bit MLC in marketing materials) instead of MLC.
This and the durability were the main reasons to pay the premium on the Pro line. Not sure what will be the value compared to the competition once the new Phison controller is out (or even Evo when there is a model for PCIe4.
- sliken 6y agoI've not heard that before, NVMe SSDS are block devices, not file devices. So why would sequential writes care if it was one file or many? Maybe you are misunderstanding queue depth for large vs small files.
- Godel_unicode 6y agoIt appears that you have misread the comment you're replying to. The speed drop-off once a write is larger than the cache can hold is a well known issue with SSDs, especially those which use slower NAND like TLC.
- sliken 6y agoWow, I did misread it, thanks.