I'm nearing the finish line on my scratch built high performance rig and I'm dialing in the hardware right now while figuring out my final block configuration so I started tweaking things up on my ROG MAXIMUS Z790 DARK HERO
That's 2nd place in North America for air cooled DIMMs using aida64 read, first place held by a user using an 8-Channel workstation board.. 23rd overall worldwide across all cooling types.
Some other benchmarks included.
Currently working on dialing in 4x24GB right now
What other kind of stability would you like? This is my daily driver that I do heavy workstation workloads on as a 3D artist. I use Cinema 4D, Zbrush, Blender, Adobe Substance, Houdini, Embergen, After Effects, Plenty of python for training SDFs/NeRFs/splats.
You're off base with your statement that it's the CPU as the determining factor. That's an incorrect statement. The quality of memory modules is far more important.
My Z690 Strix E used to struggle with 2DPC. 16x4, wouldn't do anything but JEDEC.
That same Z690 Strix E did not struggle with the 24x4 SK Hynix M die based kit at XMP 6000 CL30.
In that scenario the CPU and motherboard did not change. They were the same physical items as they were prior.
For 8000+ 1DPC on Z790, and keeping things Asus related. The Strix E Gaming motherboard and the vastly cheaper Strix Z790-F Gaming will both run XMP 8200 CL40 off the shelf kits now.
This is why I'm spending the money I am to do the things I do, so this kind of outdated information is put to rest.
Here, have a Watercooler MK IV MO-RA 200 I made last night.
Number one suggestion is to make sure you're getting modern memory.
It must be a 24GB/48GB module, 24GB preferred as I have not started testing 1DPC2R. Anything on the market currently that is not a 24GB DIMM will be outdated tech by odds.
If you look at my ICs you'll see H5CGD8MGBD on them.
Then 328A.
H5C = SK Hynix DDR5
GD = 24GB Density
8 = x8 organization, 3GB IC x8
M = Generation, this is what people say when they say A Die, M Die, it's important to note that 2GB M Die is not the same as 3GB M die, 2GB M die will be SK Hynix's oldest DDR5 ICs and the most obsolete, 2GB A Die will be the 2nd generation of 2GB ICs, there is no 3GB A die on the market currently.
GB = The speed, this one is important. There is two possible speeds in DDR5 planar memory from SK Hynix in the M die right now, EB, which is JEDEC 4800 40-39-39 1.1v, and GB, which is 5600 46-45-45 1.1v
For 5600 JEDEC outlines 4 bins, however the first bin I've never seen in use anywhere, from best to worst.
- DDR5-5600AN 40-40-40 Never seen on market.
- DDR5-5600B 46-45-45
- DDR5-5600BN 46-46-46
- DDR5-5600C 50-49-49
So these ICs are the top bin for 5600 (As I have never seen AN) the next two codes possible would be HB and HE for JEDEC 6400 bins but I've not seen those yet.
Last is just operating temperature range.
The 328A is the creation date and the class, these being Class A, the closest thing to the designed spec they could get.
I've been writing a guide as there's no comprehensive source of information that relates to modern DDR5, everything that's accessible to most people and shared around the most is outdated information from a year or more ago which is completely irrelevant to modern memory. It's slow going because I've funded and am funding everything out of pocket myself since I'm not a youtuber or some such and this is hella expensive.
It's why I bought this Dark Hero in the first place as it's one of the test units and I already had bought an Asrock Z790 Taichi I barely used for three weeks before starting down the memory guide writing. That hurt the wallet. It's an impresive board but even a budget board should be able to do great things with modern DIMMs.
I'm working on 24GB right now, so 1DPC1R and 2DPC1R the 2DPC1R is frankly more impressive to me than running 8200 CL36 but 2DPC1R is expensive and I'm gonna end up in the poorhouse at this rate, this is a Corsair 24GBx4 kit, rated XMP 6000 CL30 that cost around $600 Canadian, I got nothin but static from people that 4 DIMMs would be trouble, if it boots, it'll be jedec 4800 etc.
This is it overclocked even further to 7200 CL36, the Richtek PMIC is locked so there's no going above the 1.435v so this is where I decided to be happy with it. The next thing I'm working on is I've bought another kit of the memory I was using earlier in this thread because I plan to stabilize 8200 to 8400 CL38 on 24GB x4 with laser beam timings. The issue is heat so again, gotta shell out more money for a 4 DIMM waterblock, haven't done that yet.
None of this really matters though because DDR5 is entering its elder years, with DDR5 CKD Dimms everything goes out the window. Then DDR6 is on the horizon as the standard should be finalized in mid to late 2025.
When people tell me what modern DDR5 can and cannot do I try to remind them that in 2021 the world record was 8705 with timings at 127-120-120-120 using liquid nitrogen, in 2022 it was 8888 for a time with 88-88-88-88-127 timing using again liquid nitrogen, just last year Hicookie did 11200 or so Mt/s with 64-127-127-127 also on liquid nitrogen, and this year at Computex G.Skill was demoing DDR5-10600 56-62-62-126 running on air like it was in any other computer, obviously handpicked DIMMs but you get what I'm trying to illustrate here. Motherboards certainly didn't change at this pace, nor did processors.
V-Color's got XMP 8600 kits in the Manta XFinity line, and Patriots new model of the memory I'm currently running comes in a 9000Mt/s XMP flavour. I plan to run a kit of that on this Dark Hero,
