Overclocking x79 memory with 8 dimms

jp7152 · 20 Jan 2014 at 18:06

Running some 2133 ram which works fine at 2400 when using 4 sticks however the motherboard is not happy with memory over clocking using all 8 sticks.

I realise it is a lot more stress on the board (Asus x79 pro) and it might not be possible, however any tips or pointers would be greatly appreciated.

Thanks in advance

crasher · 3 May 2014 at 10:03

Dont know if you have solved this but have you got the memory ez plug connected. This may help with stability.

ghost.florian · 3 May 2014 at 13:46

Honestly, the difference between 2133 and 2400 is only visible in benchmarks

I wouldn't risk damaging the board for such a small difference. 2133 is already fast enough.
If you really want to overclock, have you tried loosening the timings a bit ?

mmj_uk · 3 May 2014 at 14:33

It's probably the CPU memory controller rather than the motherboard.

X79 CPU memory controllers are rated at 1600mhz (SB-E) and 1866mhz (IB-E) so you're asking for a 533-800mhz overclock depending on which you have, that's a lot to ask with 4 sticks let alone 8.

zx128k · 5 May 2014 at 14:54

I believe its 1600 RAM if all the banks are full.

Silent_Scone · 6 May 2014 at 11:24

yucky

zx128k · 9 May 2014 at 15:47

I have been able to overclock the ram i have from 800Mhz to 1066Mhz with the same DRAM Efficiency score in mem tweakIt. Noted DRAM refresh interval can be set above 8000 with this ram which is nice.