i7 Overclocking - Unstable when IDLE???

StevenG · 9 Sep 2009 at 00:00

hi all.

got a new MATX board and i cant seem to get my overclock stable when idle. doing desktop stuff..

i can run prime and it'll be fine and use my pc to do other things. stop prime and it crashes within about 5 minutes.

messed with nb, QPI, PLL settings and cant seem to figure it out so thought i would ask for some advice.

i ran this chip at 4gig @ 1.275v stable in my old board. trying 4gig @ 1.28-1.29v on new board

any info would be helpful.

thanks

Aedus · 9 Sep 2009 at 00:07

Do you have the settings enabled in the bios which lower the BCLK when your CPU is idling by any chance?

StevenG · 9 Sep 2009 at 00:14

Aedus said:
Do you have the settings enabled in the bios which lower the BCLK when your CPU is idling by any chance?

got this disabled. runs at the 4gig setting no matter what the load

StevenG

rjk · 9 Sep 2009 at 00:21

board and settings please

what ram are you running

StevenG · 9 Sep 2009 at 10:27

MSI X58M

200x20
c-state, eist and speedstep disabled

cpu 1.28
pll auto
qpi 1.42
dram 1.65
nb auto

ram 1600
2t
8
8
8
24
rest on auto.
uncore 3200

game4it · 9 Sep 2009 at 11:15

Your Qpi is very high imo so set it to 1.35v
Have you tried loosening the timings of the ram or lowering the speed of it to rule that out?

rjk · 9 Sep 2009 at 12:45

you tried 191X21 yet?

voltages seem ok to me

does your msi board have a sink on the mosfet

StevenG · 9 Sep 2009 at 13:13

rjkoneill said:
you tried 191X21 yet?

voltages seem ok to me

does your msi board have a sink on the mosfet

not at the moment so im thinking that this could be an issue (ordering some cooling for it at some point)

havent tried 191x21 yet. i thought the 21 multi was just on the first core and when its loaded it drops back down to 20?

StevenG

DavyBoy · 9 Sep 2009 at 14:02

game4it said:
Your Qpi is very high imo so set it to 1.35v

I agree, seems like a lot of Vtt..

StevenG · 9 Sep 2009 at 20:49

new settings ive been testing different settings all day. i did have one stable for over an hour at idle but then it crashed when starting up just before so ive tried the 191x21 route.

191x21
c-state, eist and speedstep disabled

cpu 1.264
pll auto
qpi 1.23
dram 1.65
nb auto
ich 1.25

ram 1530
1t
8
8
8
24
rest on auto.
uncore 3200

currently running prime without a problem will let you guys all know how these settings do at idle. any other things you think i could change?

StevenG

StevenG · 9 Sep 2009 at 21:05

Okay so ive given up on the 4gig clock for now. untill i get some mosfet cooling at least to rule that out as the reason its unstable.

what can people get 3.6 stable at volts wise?

StevenG

Duke · 9 Sep 2009 at 21:39

Make sure CPU and PCI-E spread spectrum are both off and load line calibration is off.

StevenG · 11 Sep 2009 at 16:52

What do you guys think?

StevenG