i fault parsec say it was optimal for nvme like an post of fernando to use an stripe of 64 or 128.

if i can have there speed i will test different strips of course even must reinstall totaly windows 10.

what strip sizes you recommande me to test ? starting by ?

i can expect there crazy speed ? 6k 9k ? is not because they use an x299 chipset ? who have many line connected directly with the cpu and dont affecting the other devices ?

thank you Ethaniel

@Fraizer:
parsec only made recommendations on what to try because each model is different.

Ideally you should first test only one SSD with not RAID. Then test all the available stripe sizes in RAID separately. This is the only way to find the optimal configuration.

That's why I recommended you to get a cheap SATA SSD and install Windows on it, so that you don't have to reinstall Windows this many times. Once you find the optimal configuration, you can install Windows on the NVMe SSDs.

Unfortunately I don't know whether you will find any RAID configuration that has better performance than a single SSD. You should not expect "crazy speed" because RAID 0 only improves reads/writes on large files.

I believe that RAID will not work if you connect the NVMe SSDs to the CPU because the chipset provides the RAID support.

X299 with a Xeon CPU probably has better performance. In any case, random small operations are not expected to improve much, only large sequential operations are expected to be improved, only up to 2x speed.

@Ethaniel

do you saw the last post of this page where he do 6925 with 2x 960 evo on a chipset Z270 ?

http://forum.asrock.com/forum_posts.asp?...e-m2-raid-setup


can we expect something arround that when we choose the right strip ?

@Fraizer:
Unfortunately I don't know what to expect exactly. But it will not be more than 2x of one drive. I believe that you have not posted such a benchmark.

4K reads/writes are expected to be slower than non-RAID.

If you are using it for OS and gaming, you most likely will see no real performance improvement, even if some benchmark metrics are going to be better.

@Ethaniel

i am trying to have some free time from my work to make the tests... but hard actualy.

Ethaniel in case i will dont use raid but just runing normaly only one NVMe drive can you please tell me if i need to install the last RST drivers ? and Update my RST OROM ?
i read on different websits is performences gain to install the RST drivers even we dont have an raid... hmm is true ? if yes i will need to update my orom ?

@Fraizer,

Have you checked out what your link speed is in HWinfo? I presume your running the latest Uefi Raid roms being a Z390. I would uninstall the intel rst package and run your benches Bare Metal without the overhead of the raid rst software. Also run Anvil benchmarks with just one drive as Fernando is so very fond of that performance suite. After you have a baseline bench then raid them with different rst packages. My feeling is that the overhead of the chipset raid software is setting you back plus its a new chipset and who knows there could be bios bugs holding you back. For one make sure your running latest bios version or even try last stable bios version for comparison.