High RAM latency - Threadripper

markator

markator

markator

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Joined
25 Feb 2018
Posts
22
Hi, I have a new build with a 1950X Threadripper, X399 Gigabyte Designaire Mobo and G.Skill Trident Z RGB 32GB (4 x 8GB) PC4-25600 - F4-3200C14Q-32GTZRX - the RAM is certified for the mobo and the CPU.

Everything seems fine with performance but I noticed that Passmark RAM benchmark puts the latency at 70ns in UMA (distributed mode) and 52ns in NUMA (local mode) - NUMA/UMA modes set in the Ryzen Master software. These figures look much too high for the RAM.

In the BIOS (latest version) I have activated XMP profiles and the RAM runs at correct timings 14,14,14,34 and at 3200MHz. This is also shown in Windows.

Is all of this normal given the TR 2 Die setup? NUMA mode is quicker and that makes sense. But it still seems too slow.

Any ideas?

Thanks
 
@markator
just wanted to ask how is the build as it is almost a carbon copy of my almost to be TR build except i have not bothered to add an extra GPU due to the fact that SLi isn't supported by developers anymore which makes having a second GPU almost pointless except for aesthetics,(am not knocking your build by the way just explaining why i didn't add a second one to my build,may i ask some questions...1) how is the liqtech 360 for cooling the CPU,is it doing a good enough job...?, 2) the gigabyte MB is the bios good enough as i keep reading that asus are the only MB provider regularly updating their bios and have the better alround stability with ntheir boards...? 3) i see you also only have 4 ram slots populated with 32gb ram at 3200mhz,have you attempted to OC the ram at all,(i am a complete noob where this is concerned so from just reading the OP i couldn't tell), 4) have you also attempted to OC the 1950x did it stick at 4ghz or have you managed to get it above that or not managed to make 4ghz without issue's and please please can you upload some pics of your build would love to see it...thanks
 
@mrsim
Sure. The second GPU was a little overkill tbh...

In answer to your questions 1) I'm quite happy with the Enermax cooler, temperatures are kept around 36C usually (but it's quite warm in our house always!) and I don't think I've ever seen over 64C during heavy benchmarking. I did change the fans for Noctua NF-F12 Chromax fans. But the original fans were just fine. I decided to go for that cooler because of the complete coverage of the CPU and good reviews. 2) There have only been two BIOS updates for the Gigabyte mobo since it was released - the last update was October last year. I have had zero stability issues with this board (except for the first board which lasted 3 days then wouldn't boot - bad luck I guess). They use really high quality components on the board which is good. I don't know enough about Asus to compare. 3) I haven't attempted to OC the RAM or anything else. It has so much power I just don't see the need and I'm not into maxing stuff out. I bought expensive RAM to avoid issues and make sure it can run at 3200MHz out of the box. 4) I haven't attempted to OC the CPU. I use the PC for work mostly and run lots of VMs which is why I like the 32 threads and 32GB is enough for the number of VMs I need.

Here are some pics I took whilst building the PC... https://imgur.com/a/v1BXA - I used custom cables Alchemy 2.0 SSC Series. By the way, one of the pics shows the thermal paste I applied... I spent ages looking for the best way to put thermal paste on the TR and some extensive testing showed that you should cover the 'Z' on the CPU.

Good luck with your build! Let's see some pics when it's done!
 
OMG...what a beastly rig amazing work my friend...i will defo post a build log and pics in a thread which i will surely post here in the forum,(am also hoping to start my youtube channel with the build too fingers crossed
 
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