Gigabyte Z77X-UD5H with F3-1600C10D-16GAO BSOD

[gamer_kris]

Hi,

I am having problems with running The 16GB(2x8GB) Ares on its advertised speed.

When running the XMP profile for DDR1600 @ 10-10-10 V1.5, windows always crashes while running prime 95 small FFTs using ram (Custom mode with 12750MB memory to use) This test failed even though the cpu is in stock (no overclock/voltage change in bios). The crash occurs less than 10 minutes from the start of the test every single time.

When running without XMP (DDR1333/667Mhz), the system is stable running the same test whether the cpu is stock, or overclock.


My system is
Intel 3770K/ Gigabyte Z77X-UD5H(BIOS F6)/ Memory F3-1600C10D-16GAO

[Tradesman]

Might check each stick with Memtest to see if maybe you got a bad stick, could also try raising DRAM voltage slightly in case the regulation is off and not getting full voltage, maybe up + .04

[G.SKILL]

please make sure that you are using the F6 BIOS:

F6 3.62 MB 2012/04/26
Improve Sandy Bridge CPU overclocking
Support Intel Xeon Processor

http://www.gigabyte.com/products/pro...?pid=4139#bios

[gamer_kris]

I used the F6 BIOS.

I ran memtest for 3 passes with no errors. Increasing the RAM voltage to 1.55V does not change anything (still crashes in the first 15 mins).

The thing is @ 667Mhz, the computer passes 12hrs prime, I ran the RAM single stick at a time and it does not crash in the first 30-40 minutes (did not bother to run longer since when using both sticks, it always crashes/freezes in the first 10-15 minutes)

I wish I have other sticks with similar bandwidth/timing to compare/isolate the issue but I have none, any ideas of what the problem is?

Thanks

[Tradesman]

Could you try it with the CPU OCed up just a couple of notches to 3.7 or so

[gamer_kris]

I have 12hrs of prime stable on 4.5Ghz @667Mhz/1333MT(9-9-9-24). it crashes when I enable the XMP to run 800Mhz(10-10-10-30) though. the XMP crashes whether the cpu is OCed at 4.5Ghz or at stock (all default setting) @ 3.5Ghz

[GSKILL TECH]

Test one module at a time to see if each can pass.

Thank you
GSKILL TECH

[gamer_kris]

If you are talking about memtest, then I did test them one stick at a time and each stick have no error after 3-4 pass of memtest. Or did you mean run the Prime with one stick?

[Tradesman]

Might try raising the IMC voltage just a bit + .03 or so

[gamer_kris]

As wierd as this sound, increasing the IMC to 0.95V(from default of 0.925) made it the computer reboot within the first 30 seconds of prime

[Tradesman]

What are the advanced timings showing as, especially the tRFC, but the others as well

[gamer_kris]

I set things to auto after setting the profile through XMP, however the board gives timing beside the option which I assume is the default value loaded thorugh the profile. Those are:

CAS 10
tRCD 10
tRP 10
tRAS 30
tRC 40
tRRD 5
tWTR 6
tWR 12
tWTP 24
tWL 8
tRFC 208
tRTP 6
tFAW 24
tCMD 2
tRW 3
tWR 3
tREFI 6240
tREFIX9 54
tRRDR 1
tRRDD 3
tWWDR 3
tWWDD 3
tRWDRDD 3
tWRDRDD 1
tRWSR 3
tRRSR 4
tWWSR 4

[gamer_kris]

By the way, I updated the BIOS to F7, but it has no effect in regards to running the RAM at 1600

[Tradesman]

Might try
tCMD 2
tRFC 173
tWR 16
tRRD 7
tWTR 8
tRTP 8
tFAW 26
DRAM Voltage 1.55

[gamer_kris]

Hi, unfortunately, those timings does not improve the stability.

I finally got access to another set of RAM of the same model from my friend and tested it, so for its stable (1hr and counting right now). So I think this is a case of bad module (even though somehow memtest did not detect it). I will run a little bit more stability testing and if it is completely stable, I will RMA the module I have.

Thanks a lot for your time so far in figuring out this issue. I appreciate it.