TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

[Chike]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

There should be a way to tell which DIMM give the error by the error address.
I would start by testting slots 2, 4, and 6 in single 4GB setup then 8GB dual channel setup.

[Core5]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

Could you explain how to read an address to determine which DIMM it belongs to? I don't know anything about that.

[Chike]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

I am not quite sure, could you post some of them?
Have you tried the single and dual channel tests?

[Core5]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

001c48933a0
001c4893420
0022e4ac260
0022e4c1780
Err-Bits all = 10000000
The errors come up while testing blocks 6144M-8192M and 8192M-10G

[Core5]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

Well here's an interesting result.
I was fed up with trying everything I could think of, and went with the last thing I wanted. Enabling XMP. To my surprise I went from having around 200 errors, down to just 5 (in the first pass). This is good news because I could now rotate RAM around and compare addresses to see if any are bad. As error addresses should change if a bad DIMM is moved. Well before I got to that I tweaked some more settings and right now I'm not getting any errors.

Hopefully this time it's for real. I just wish there was a clear way of knowing exactly what XMP was doing, because I would rather set those things manually.

[shadow6491]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

I am also running 2 sets of 6GB sets of memory on a UD7 rev 1 board but at even higher frequencies. This is what I am using for the settings.

A CPU clock ratio of 23
Gives a CPU Frequency of 4.37 GHz
A QPI clock ratio of 36
QPI Link speed of 6.84 GHz
Uncore Clock Ratio of 21
Uncore Frequency of 3990 MHz (This seems to be my bottleneck I cannot go above 4000 MHz)
BCLK Frequency of 190
System Memory Multiplier 10
PCI Express Frequency 102

Load Line Calibration level 2
CPU Vcore 1.30625 V
QPI/VTT 1.495 V
QPI PLL 1.28 V
IOH Core 1.200 V
ICH Core 1.180 V
Dram Voltage 1.680 V

[Lsdmeasap]

Re: TRX3X6G1600C8D x 2 (12GB) on UD7 instability.

You can see what XMP uses with CPU-tweak for the memory timings, and easytune for voltages.