Erratic booting with g skill (4 modules 1600)

[jim55]

Could a g skill technician or anyone please help. My last (first ever post ) did not get a reply

I have the following:
Asus P7P55D
intel i5 750 2.66GHZ
4*2 (8MB) G Skill F3 128000cl80-4GBRM(1600MHZ)
Timings XMP 9 9 9 24 89 2T 1.6V
The issue I have is that when 4 modules are inserted The computer will not cold boot. It is ok when it eventually boots.
I have tried underclocking but it makes it worse.
3 modules (6MB) give no problems. on windows seven 64 bit.
Please help.

[jim55]

To make it clear it does not boot with 4 modules on a cold boot, but boots ok rest of the day unless left off a few hours .IS ok with 3 modules of memory

[G.SKILL]

sorry....but we only guarantee for 2 dimms in dual channel could reach our rated spec, not 4 dimms
while installing 4 dimms, the memory controller may get too heavy loading to make it difficult to reach the same spec of 2 dimms
would you like to increase CPU vtt voltage to 1.3-1.35v?
because you have to overclock your i5 750 to run DDR3 1600, you may need to increase some voltage to improve the stability
thanks


G.S

[GSKILL TECH]

Try setting the memory settings manually to the memory package as the XMP Profile doesn't seem to be picking up the correct settings.

Thank you
GSKILL SUPPORT