Its probablly an issue with the imc.
X99 had similar problems back in the day, especially the 5820K.
TBH it's not a huge dealbreaker for me right now... I mean it's a new platform, some issues are to be expected.
Even after just updating the BIOS they had hugely varying results... But yeah, new platform, new issues.
Its AMD´s first new platform with DDR4 support.
So yeah you could expect issues like this to happen.
Like i said back in 2014 wenn X99 came out first platform with DDR4.
It was also problemematic back then.
Wait for software updates people.
phoronix is an ok source, but they don't really get into the guts of anything in their reviews. mostly just automated benchmarks of various games/workloads. For stuff like GPU passthrough testing, virtualization features, ECC testing... Wendell is pretty much the only dude covering this kind of stuff AFAIK, but he does a great job of it.
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Wendell did you say that Asus is making a Crosshair Formula X370 motherboard?
jay seems to think that a lot of the problems are caused by zen being a bit rushed and not ironing out all the software. he talked about it in the live stream he does every week with barnacles. gamers nexus posted a vid of them on the phone talking to amd about various problems with bios versions and such with the motherboards some of which have just got fixed or havent been fixed yet. there is also talk about turning on or off features on various intel and amd chips and messing with them on power shell.
my question is whats your take on all this? and are you going to retests things with the fixed up to date bios and such in a week or whatever when everything is mostly working?
i want to get a 1700 or 1700x but this the numbers are all over and this doesnt pass the sniff test.
Apparently, you can get bits to flip on ECC-RAM as well:
The link to this paper is the following:
www.thirdio.com/rowhammer.pdf
Not sure but highly likelly that they will come with a more higherend board then the Crosshair Hero yes.
Maybe a Crosshair Formula or Extreme.
Regarding checking out ECC: Although I've only used the free version, the paid version of Passmark Memtest86 (http://www.memtest86.com/) is advertised to artificially "inject" ECC errors to test the ECC mechanism. Unclear from the changelog if Ryzen is supported.
What did you use to measure memory latency? I've heard that AIDA64 isn't updated for Ryzen and shows borked values.
Testing with Windows 7 requires driver injection on the install media. AMD sent out a small guide on how to do it but basically left a footnote stating "We can't guarantee any stable performance in Windows 7 as the software is not officially supported. Some hardware combinations may work better than others, however we recommend against testing in anything other than Windows 10."
I.E. Performance will suffer and most of the features won't work at all, and there's no fix available for problems.
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Yeah i was kinda currious about this, because certain X370 boards,
still come with legacy ps2 and usb2.0 ports.
Well i guess that might be a deal breaker for me.
But its of course logical that they dont offer any support for obsolete Osses anymore.
So that is not really something to blame them for at all.
Woah hold on there... how are @wendell and me supposed to plug in our keyboards if there were no PS/2 ports :P
Why there are still USB 2.0 ports though is beyond me...
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Ryzen: Strictly technical thread
"850 points in Cinebench 15 at 30W is quite telling. Or not telling, but absolutely massive. Zeppelin can reach absolutely monstrous and unseen levels of efficiency, as long as it operates within its ideal frequency range." It is quite interesting, motherboards to fill some niche markets could make things more interesting.
I talked about that a bit on the tech city stream earlier. Disabling it for extreme oc you are at a huge disadvantage from the get go
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On how to test for ECC function:
As I was looking for if it was supported at all prior to the reddit AMA answer, I came upon a thread in a forum where apparently all participants have specialist-level knowledge about CPU design and architecture. Someone asked how to test for ECC function, and I think this is the answer:
Original post: http://www.realworldtech.com/forum/?threadid=165321&curpostid=165494
By: Thomas M ([email protected]), February 25, 2017 8:27 pm
...
The basic procedure is to disable ECC checking but enable ECC generation. Then crank up the scrub rate to maximum, wait for one pass through RAM (the scrub address is readable, making this easy), then back off the scrub rate and enable checking.
...
I am not sure exactly what this means or how to do it, but someone on here might be able to explain it? Or I could try to work up the guts to ask on the original thread. No guarantees.
Hey @wendell, do you know a tool for monitoring ryzen voltages and temperatures on linux?
Would be nice to have something like i7z for Intel.
So far I tried lm_sensors but that doesn't seem to work yet.