Upgrade to windows 7 64 bit 6 gigs ram unstable: ex58-ud5

[jayfunk]

hey guys...
i recently had windows xp 32 bit with 3 gigs or ram. ive now upgraded to windows 7 64 bit with now 6 gigs of ram and my overclock is unstable obviously. does anyone have any ideas which voltages need more juice in order to handle my upgrade? ive gone through a couple of them one at a time upping them only one notch but with no luck. im stumped.
heres what i got.....

25x168 = 4.2
ht on turbo off
qpi = x36 = 6.04
mem = x10 = 1680
vcore = 1.46875
qpivtt = 1.455
ioh core = 1.18
dram = 1.64
term = 0.74
All else manual at default

core i7 965
gigabyte ex58-ud5
corsair 1600 ddr3
1000 w silverstone
gtx 280 sli

thanks guys in advance for all your help
jay

[Pottypete]

Hi,
Does it boot with one stick, stable,
If not reset to default in bios and start testing,
Set dram to mem manufactures recommendations,
cheers

[jayfunk]

with those settings ive had it stable with windows xp and 3 gigs of ram.

http://www.overclock.net/faqs/26706-info-ram-timings-dummies.html

heres a good link with lots of good information. i wonder if its accurate?

http://www.memoryexpress.com/Products/PID-MX22566%28ME%29.aspx
this is my ram and it says 1.65 dram with  9 9 9 24 timings tested at 1600 mhz
so thats what ive got
ive now down clocked the ram to 1560 by having a new bclk/ratio of 156 x 27
also ive left all those other voltages on auto save for the ones above
ill give that a whirl
any more input is greatly appreciated
thanks so much in advance

[oggmonster]

Try running a memtesthttp://www.memtest.org/#downiso to check for RAM stability

[R_N_B]

1366 motherboards and the memory performance are dependent on the internal memory controller in your CPU - IMC for short.

You will have to find what is the sweet spot for your unique CPU and the memory is. Unlike DDR2 which was a breeze to set up, even to push till smoking, DDR3 tweaking regardless of what the default specification of the ram bought claims on the 1366 platform requires considerable effort to achieve. Some folk just get lucky. Please keep in mind that unlike the i5/i7 platform, which has native support for DDR3 1600 and above some boards up to 2200 Mhz, 1366 does not. Yes you can over-clock your ram to impressive frequencies but it is dependent on the IMC or in other words your over-clock is dependent on your CPU.

Disclaimer - not saying your CPU is bad or borked.

Just giving you some back ground and some hope, namely that with a bit of time and effort you should succeed.