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Changing NB frequency = no post :(

post #1 of 7
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ive been overclocking my 960t with a CHV and ive gotten it to 4GHz with 1.39v and it seems to hold up in prime. ive read that thubans really like cpu-nb overclocking too so ive been trying to do that, but it seems like if i change the nb frequency from stock 2000mhz at all, it doesnt post. ive tried loosening ram timings, upping ram voltage, upping cpu-nb voltage, different bios versions, and nothing frown.gif

even if i try 2200mhz with a slight voltage bump, the only way it posts again is if i hit mem-ok and set it back to default

help!
post #2 of 7
Quote:
Originally Posted by mooper View Post

ive been overclocking my 960t with a CHV and ive gotten it to 4GHz with 1.39v and it seems to hold up in prime. ive read that thubans really like cpu-nb overclocking too so ive been trying to do that, but it seems like if i change the nb frequency from stock 2000mhz at all, it doesnt post. ive tried loosening ram timings, upping ram voltage, upping cpu-nb voltage, different bios versions, and nothing frown.gif
even if i try 2200mhz with a slight voltage bump, the only way it posts again is if i hit mem-ok and set it back to default
help!

The only thing I can think of is it doesn't like the ram running @ 1600mhz and the NB higher than that -- you might lower the ram to say 1333 and try again. If not, try increasing the HTT instead, use AMD overdrive, and run something like 2 or 3 instances of memtest, and wait to see if it errors out.
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post #3 of 7
I get this but unfortunately for you its at 2800mhz, so i cannot help you, did you get a 960t that can unlock or only do 4 cores? Try what he said above though I have no found a fix myself.
    
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post #4 of 7
return the core to stock and see if you can oc the cpu-nb then.
if you cant, bad luck on you. if you can oc then, you need to bump up voltage on the cpu-nb.
what voltage are you running your ram at ? what timings ?

to be honest, nvm, i'll say something after you post the results after trying this
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post #5 of 7
960t is able to do 3000MHz on the NB just like any other Thuban. Memory speed will have little to do with this unless you are changing the timings to values other than what it's rated for. Make sure you are raising the CPU NB Vid Control voltage and not the NB voltage. I think your target voltage is between 1.25v and 1.3v on the NB Vid control for 3000MHz.
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post #6 of 7
I have personally seen 965 BE's that would not run with the NB bumped more than 200 MHz., no matter what voltages were tested.
post #7 of 7
Quote:
Originally Posted by mooper View Post

ive been overclocking my 960t with a CHV and ive gotten it to 4GHz with 1.39v and it seems to hold up in prime. ive read that thubans really like cpu-nb overclocking too so ive been trying to do that, but it seems like if i change the nb frequency from stock 2000mhz at all, it doesnt post. ive tried loosening ram timings, upping ram voltage, upping cpu-nb voltage, different bios versions, and nothing frown.gif
even if i try 2200mhz with a slight voltage bump, the only way it posts again is if i hit mem-ok and set it back to default
help!

I had the same problem when i change NB frequency in bios. Than i try with AMD overdrive software and I don't had any problem that way. I now many people said AOD is bad choice but in my case is very stable. I raise NB to 2800 with proper voltage and no crashes but the temps were to high with my stock cooler. Now I keep it to 2200.
Bottom line is it worked. It worth a try.
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