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[Official] Gigabyte GA-990XA/970A-Series Owners' Club & Help Thread - FX-8350 support added - Page 35

post #341 of 3278
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Changing NB freq. affects the IMC and L3 cache on the CPU, has nothing to do with the "northbridge"/chipset on the motherboard.
post #342 of 3278
Quote:
Originally Posted by xd_1771 View Post
Changing NB freq. affects the IMC and L3 cache on the CPU, has nothing to do with the "northbridge"/chipset on the motherboard.
Though I never stated that it affects the "northbridge"/chipset, it did give me an extra .1 for the RAM in WEI, which is what I was hoping for (better return from the RAM).

I was also wondering what would make the southbridge heatsink get extremely hot.
Edited by minaul - 9/10/11 at 9:00pm
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post #343 of 3278
Quote:
Originally Posted by minaul View Post
VRM idles at about 42C, or at least that's what it was just before I ran the test again for this post.

It seems to be average 59C at load. Stock heatsinks on the motherboard.


Edit: Changed my NB freq to 2416.2 MHz and there was no change in temps. OCCT had the same results. Got an extra .1 in WEI.
You can go even further than 2400mhz, on the phenom II x4 955. The sweet spot for 1600mhz ram and a overclock of 4ghz is 2600-2800mhz on the cpu-nb. So far I'm running at 2600mhz cpu-nb at 1.2volts in bios. Gave me a score of 7.7 in WEI.
post #344 of 3278
Getting 7.6 right now. Is that extra voltage properly safe?
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post #345 of 3278
Quote:
Originally Posted by minaul View Post
Getting 7.6 right now. Is that extra voltage properly safe?
Yes it is totally safe ran Prime95 on blend for 4 hours and intelburntest 20 passes on high all passed. I have seen people run the cpu-nb as high as 1.4 volts stable. As for me my 955 runs at 4.0ghz at 1.4volts with 2600mhz NB at 1.2volts which is low voltage compared to others. You can check out this thread and see what others have clocked their 955 at.

http://www.overclock.net/amd-cpus/49...x4-9x5-oc.html
Edited by Rumilsurion - 9/11/11 at 6:33am
post #346 of 3278
Yup, I've got it at 4GHz/stock and 2.6GHz/1.2.

So far, stable after one hour of OCCT. I'm running a three hour test, so we'll see how it goes. Temperatures haven't changed at all since my 30 minute test.
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post #347 of 3278
Quote:
Originally Posted by minaul View Post
Yup, I've got it at 4GHz/stock and 2.6GHz/1.2.

So far, stable after one hour of OCCT. I'm running a three hour test, so we'll see how it goes. Temperatures haven't changed at all since my 30 minute test.
Nice, hope after all your stress testing is complete it is 100% stable. The 955 is a good little quad core.
post #348 of 3278
Unfortunately, having CPU/NB at 1.2v, I get errors randomly during LinX testing. No problems on a 1GB test, but 4GB and 6GB tests gave an error.

I changed my FSB to 205, increased voltage to 1.42v on CPU, and increased NB voltage by one notch. I'm pretty sure I left CPU/NB voltage to 1.225v.

With the new settings, 2.5GB on LinX worked. Going to test some more.
Edited by minaul - 9/11/11 at 8:35pm
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post #349 of 3278
I was wondering should I remove the VRM heat sink and reapply the thermal paste there and which thermal paste should I use? In the past I use NT-H1 on the north bridge and temperatures dropped. Or should I try mx-2 or mx-4? If I do it I will take lot of pictures of the procedure.
Edited by Rumilsurion - 9/12/11 at 2:30pm
post #350 of 3278
Since I don't have a case yet (mine has been on backorder for more than a month), I don't know what my real temps are. They might go up or they might drop a lot. Right now, my cooling is whatever the temperature of the room is, only the CPU has cooling from my H50.

I was considering getting new paste for the motherboard heatsinks, or different heatsinks, if any exist. I might not have to, though!
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