Gigabyte GA-X58A-UD5 and 2 kits of CMT4GX3M2A2133C9

[Hellraizer]

I have problems with my Gigabyte GA-X58A-UD5 (rev 2.0, latest FB BIOS) and my two pairs of CMT4GX3M2A2133C9 (8Gb total).

 

System doesn't start with XMP mode on.

Manually entered 2133MHz (16.0) and timings 9-10-9-24, and ofc voltage 1,66 (there's only 1,64 and 1,66 in BIOS, but 1,65 neeeded) - parameters that printed on modules.

It starts, but sometimes 'looses' 2Gb of RAM on start or reboot. Sometimes even more. No dependences, works unstable. Tested with 3 modules of 2Gb - same thing.

Installed Win7 x64. It works, but sometimes goes 'memory' BSOD. After reset - 'memory loosing'.

 

Tested with default BIOS - works 'better': default tests of Memtest 4.10 are OK, but when I try 'resize mem' test - lots of errors and freeze.

 

Don't know about my power supply. I have ******** PurePower RX 600W, I think i'ts enough, but maybe I'm wrong. Tried with HDD and CD off - same problems.

 

Maybe BIOS manual tune was not enough and I forgot few parameters?

Any advices?

 

P.S. Sorry for my bad English.

[RAM GUY]

I have problems with my ASUS GA-X58A-UD5 (rev 2.0, latest FB BIOS) and my two pairs of Dominator-GT CMT4GX3M2A2133C9 (8Gb total).

 

System doesn't start with XMP mode on.

Manually entered 2133MHz (16.0) and timings 9-10-9-24, and ofc voltage 1,66 (there's only 1,64 and 1,66 in BIOS, but 1,65 neeeded) - parameters that printed on modules.

It starts, but sometimes 'looses' 2Gb of RAM on start or reboot. Sometimes even more. No dependences, works unstable. Tested with 3 modules of 2Gb - same thing.

Installed Win7 x64. It works, but sometimes goes 'memory' BSOD. After reset - 'memory loosing'.

A: More then likely you are hitting the limit of the CPU for over clocking, try and lower the memory frequency to the next step down and see if its more stable also I would set the QPI/VTT Voltage to 1.4 Volts.

 

Tested with default BIOS - works 'better': default tests of Memtest 4.10 are OK, but when I try 'resize mem' test - lots of errors and freeze.

A: That option is not suggested with X86, please go to and read the help file about memtest for more information.

[Hellraizer]

A: More then likely you are hitting the limit of the CPU for over clocking, try and lower the memory frequency to the next step down and see if its more stable also I would set the QPI/VTT Voltage to 1.4 Volts.

 

What timings and voltage should I use when lowing memory frequency each step? Default parameters or keep trying numbers? Is there any fixed timing/voltage for this modules on 1866/1600Mhz for example?