Hi!
There is a free program called ImDisk which you can use to create a RAMDisk partition inside of your RAM.
I am using this program as we speak.
It’s very easy to use.
I don’t know if they are the same, but the first one I tried was this one, also a Dilinker cable, and it looks the same from the picture, and it did not work at all with my p5800x.
i remember someone mentioned here previously that this particular gen 4 rated one works , spoke with a friend of mine , he confirmed the same . there are 2 models in their official store , one is gen 4 and other is gen 3 (not rated ) .
I ran a disk benchmark using that Kalea-Informatique 2x MCIO adapter (and a Supermicro cable) at Gen3 speeds and that went fine: A Neverending Story: PCIe 3.0/4.0/5.0 Bifurcation, Adapters, Switches, HBAs, Cables, NVMe Backplanes, Risers & Extensions - The Good, the Bad & the Ugly - #739 by homeserver78
Hey, was wondering if you had the chance to re-test it. I think I am facing the same problem where there could be a media reconditioning after changing to a M.2 MCIO redriver adapter from a PCIe slot adapter.
My RND4k R/W is down, but my sequential is still fine. I’ve left my P5800x idle for 3 days now and wondering how much longer to wait before I start thinking that its a cable or adapter issue.
whats ur current random 4k ?
I haven’t gotten to it yet. Been busy. But you know what, I’ll try to do it later today.
Ping me again if I forget. 
For what it is worth, I just ran a standard (non NVME, non crazy custom test like I did before).
After having the drive powered on in my system but not used for a good long while, the initial standard test results seem to be back where they were at over 7400MB/s
So it seems letting the firmware do its thing in the background regained the lost performance from repeatedly running performance tests.
I left the drive powered on but unused for a good long time. No idea how much of that time was actually necessary. Probably only a very small amount of it. I just didn’t get back around to testing it again as quickly as I thought I would.
is it just you thats getting sub 300mb\s on 4k randoms ?? many i have seen is high 350+ and a few at 400+ . i wonder y ? these are what i am talking abt
Its probably because Q1T1 is CPU limited.
My Threadripper 3960x - while once a beast - doesn’t quite keep up with more recent CPU’s 6 years later.
That won’t be a problem for long though.
planning on upgrading to threadripper pro 9000WX ??
After all this time I’m still getting 320 Read / 250 Write for 4KQ1T1 on my 9800X3D.
I’ve purchased the following:
- M.2 Gen Z.2 to PCIE 4.0 - This one gets me 380/350 R/W and is the same one from Wendell’s Holy Grail video. However the Gen Z.2 connector on the M.2 is too bulky and has clearance issues with my motherboard layout. I have to bend the cable at an extreme angle to get it to fit. I wasn’t comfortable with it so I ended up reselling it.
- M.2 MCIO 38p to PCIE 4.0 - I only get 320/250 R/W
- M.2 MCIO 38p to PCIE 5.0 - I still only get 320/250 R/W
At this point the only issue seems to be the cable and maybe some sort of latency there as I ended up comparing the adapters’ main chips (for future reference for anyone):
- The Gen 4.0 adapters were both (Gen Z.2 and MCIO 38) using Diodes Incorporated PI3EQX16612 (DeMux) and PI3EQX16621 (Mux)
- The Gen 5.0 adapter is using Texas Instruments SN75LVPE412 (DeMux) and SN75LVPE5421 (Mux)
Unfortunately no.
I have been a long time fan of the HEDT approach, where you build one big badass system that does everything.
Unfortunately that approach appears to be dead. HEDT seems to be dead.
What used to be HEDT (x58, x79, x99, TRX40 etc.) has morphed into proper workstation platforms. And they are excellent workstations, but they are also true workstation products, with forced registered ECC RAM, lower per core clocks, and no scheduling optimization for consumer loads, resulting in poor game performance, etc.
You just can’t have it all in one build anymore. And if you try, you will be spending an excessive amount of money chasing the latest and fastest workstation product, and getting disappointing non-workstation performance in for the effort.
And if I am honest about it, my 3960x is still excellent for my work. I don’t need to upgrade it for that. Despite being 5.5 years old it will likely continue to work well for me for a long time.
I’ve done the math, it winds up being way cheaper to just maintain a dedicated game machine, and chasing the latest hardware on that, and just updating the workstation periodically, maybe whenever I decommission old server hardware.
The end result is I am building a dedicated game machine (9950x3d, I have all the parts, just haven’t had time to build it yet). The 800GB p5800x will be the boot drive for this machine.
I will bee keeping the 400GB p5800x in the workstation, with all of the VM’s I use on the workstation running off dedicated ZVOL’s (native ZFS virtual block devices ontop of a ZFS pool) an all NVME ZFS pool. I’ll actually have two more Optanes in the workstation when I am done. Two 280GB 900p’s (mirrored) as SLOG devices to help speed up writes.
I think it should be very fast, and work great for my application.