OClockDoc

Shure, I know the mem is unstable, but same settings works fine for 4000 and even 4066. That is why supposed it is BIOS issue. tCWL 9 is no go, tWRRD 1 is fine, but don`t think it`s faster, tWTR L/S=3/8 lowest possible for me. I don`t think ProcODT has direct affect on time, may be stability issue affecting time. 2x8GB DDR4@3800MHz 11-11-8-9-21-29-1T

Still can't understand why board goes in slow mode with certain mem multiplayers: Otherwise very happy with the board. Pi 32M 2x8GB DDR4@3800MHz 11-11-9-9-21-29-1T

Hi, I also have issues with 3933 Mem clock with CVIII Impact Bios 3003. The board goes in something like slow mode. With 4000 run fine. Did anyone have idea is it a Bios related? Also which Bios is best for Pi 32M on Impact?

5960X Batch 3427B244

Could we get this one added for Snapdragon contest? http://hwbot.org/submission/2640094_ Thanks.

The board was dead. I send it for RMA and just receive Asus Maximus 6 Gene as a replacement.

G.Skill Ripjaws F3-16000CL9D-4GBR . I copied exact the same timings and subtimings from your post and every time got Code 15 when try frequency above 2200.

I read it, but nothing helps. Above 2200MHz the board won't POST. And I thing it is death after 30 min on LN2. Now code 15 all the time.

BBSE I think. Most probably there is some issue with this particular board. I tried it with LN2, and after about 30 min board hangs with Code 15. Otherwise for information 4770K Batch 3012... CB@-130 Max Validation 6250@1.85V.

I tried two different kits Kingston HyperX Predator 1866 C9 which work fine on Asrock at least at 2600MHz: Second kit G.Skill 2000 C9- I never try it on Haswell but on Ivy they are also fine for 2600MHz: On Z87X-OC the system won`t POST above 2200MHz Memory Frequency(hang on code 15).

I tried B10 and f5p. No difference.

I bought X87-OC, and replace Asrock Z87 Extreme 4, but so far this movement is very disappointing. Mostly because can not clock memory higher than 2200MHz. With 24 multy board wouldn't even POST with code 15 on LCD. Same memory and CPU with Asrock passes Pi 32M on 2600Mhz. The memory is Kingston HyperX 2x8GB 1866C9 (Hynix xFR i thing). I tried different BIOS`s, voltages and latency settings. With different strap(1.25) max frequency is ~2350MHz. Same thing happened to me with Ivy and G1 Sniper M3 before PLL overvoltage to be added in BIOS. Someone with any idea ? I bought the board only because of capability to clock inside the Win XP for Super Pi benching with LN2. Now with DDR3 below 2200MHz and Haswell CPU i don`t think even wart to try.

Hoe can we know for sure is it active or not?

Someone reported the score for wrong cpuz timings detection, so I've updated the score with a verification link - http://www.3dmark.com/3dm11/5355108 .

Thanks everyone. QPI and Vdimm same as before (~1.7, 2.1v) with different cooling. I think that is the max with this board.

Thanks

Thanks. CPU Vtt +540 (~1.7V), DRam 2.1V.

Thanks. I think the memory can do 5-5-4, but unfortunately Bloodrage doesn`t havre such BIOS option. It is not so important because the benefit would be minimal.