Low performance for my PCIe SSD Intel 900P

cx5 wrote: The 1st link is OK good buy. The 2nd link is too long, will clash with ram for space, can't clear the ram height. Must get just PCIe4x length to clear ram.

memory calculator...
https://cdn.discordapp.com/attachments/1072856367632760942/1073586561360330803/image.png

the zenmanager data...
https://cdn.discordapp.com/attachments/1072856367632760942/1073604709274894446/image.png

Katana1074 wrote: Hi there I have an Intel 900p pcie ad in card they are pcie 3.0 based here's a link to my asssd score if it helps any... https://imgur.com/mmceU7V

Hi @Katana1074 , Thanks for sharing your Optane900p benchmark, can you also let us know what other hardware it was running? CPU? ram? or anything you'd think that would be related?

@Nightlane
I recall my benchmark also 6000+ score in AS SSD benchmark, especially remember was the read is obviously higher than write, rounded values for easy rememberance, my read was no more than 2500MB/s and write was around 2000MB/s. My access time was around the 0.01x millisecond, I need to go home dig out some old records or else redo a benchmark to see. Please wait. I had 1700x then to 3800x, then ram from 1500Mhz to 1800Mhz, I'd think the cpu1700x+ram1500Mhz benchmark of Optane900p would loose a bit to 3800x+ram1800Mhz.

Nightlane wrote: how do you know the right value for the tRfc? zen says 350, while the dram calculator says otherwise.

From your zentiming 1.2.9
the 350 is ns = nanosecond, we cannot key in this to bios.

while the tRFC=560 is timing cycle, I suspect this is from your ram's original XMP parameters. We can key this into bios. As well as tRFC2 and tRFC4.

Dram Calculator 1.7.3 is suggesting tRFC=416 for you. There's a lot other parameters, so you have to look at them patiently and carefully to catch their difference, and read my prvious post about using the "additional calculators" to get tRFC2 and tRFC4, because it is not provided in main page.

Edited by cx5 - 13 Feb 2023 at 9:45am

cx5 wrote: Katana1074 wrote: Hi there I have an Intel 900p pcie ad in card they are pcie 3.0 based here's a link to my asssd score if it helps any... https://imgur.com/mmceU7V Hi @Katana1074 , Thanks for sharing your Optane900p benchmark, can you also let us know what other hardware it was running? CPU? ram? or anything you'd think that would be related? @Nightlane I recall my benchmark also 6000+ score in AS SSD benchmark, especially remember was the read is obviously higher than write, rounded values for easy rememberance, my read was no more than 2500MB/s and write was around 2000MB/s. My access time was around the 0.01x millisecond, I need to go home dig out some old records or else redo a benchmark to see. Please wait. I had 1700x then to 3800x, then ram from 1500Mhz to 1800Mhz, I'd think the cpu1700x+ram1500Mhz benchmark of Optane900p would loose a bit to 3800x+ram1800Mhz.

specs are now in my signature regards

My optane900p worst score is using pcie5(gen2 through x370promontory chipset).

Pay attention to 4k-64thread is the key bottleneck performance lost.

old CPU 1700x from 2017
      access           4k-64thrd           Score
      read    write    read      write       
pcie5 0.153ms 0.044ms 277MB/s   529MB/s   1279

pcie3 0.022ms 0.037ms 2211MB/s 806MB/s   5044 with optane driver could be this bad too
pcie3 0.022ms 0.037ms 2277MB/s 821MB/s   5164 without optane driver, using microsoft nvme driver
pcie3 0.022ms 0.037ms 2869MB/s 796MB/s   6038 without optane driver, using microsoft nvme driver



*Upgraded cpu 3800x @ 2020
*benchmark @ 2021-sept-2nd manual bios gen3pcie2 gen2m.2_1empty
*may have overclocked the CPU to get good scores.
Ram is GALAX HOF 3600MT/s 1800Mhz original XMP
      access           4k-64thrd           Score
      read    write    read      write       
pcie2 0.016ms 0.024ms 2432MB/s 1976MB/s 6675

m.2_1 0.018ms 0.026ms 2322MB/s 967MB/s   5550 2023-feb-13 optane driver plus firmware update to 2010603 defrag optimized
adaptors/convertors
ram @ 3333MT/s ram @ 1666Mhz Corsair CMK32GX4M2B3000C15 not using Galax HOF