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Haswell Overclocking Guide [With Statistics] - Page 27

post #261 of 19539
I ended up changing my overclock after talking with a friend and playing on his party he showed it to me just built it...anyways

4770k 4.5ghz 1.32 with ring bus ratio 4.5ghz 1.32v 8gb 2400

it benches slightly less than 4.6ghz but I can tell you that I get bette FPS is every game with that 1:1 ratio at 4.5ghz it feels freakin butter smooth thumb.gif
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post #262 of 19539
Quote:
Originally Posted by Ryude View Post

If you look at the FFT, it changes from large to small. Small FFT is good for producing heat while large FFT is better for finding instability in your RAM. If you fail on large, but pass on small then it probably means your RAM overclock is unstable. If you fail on small, it means your CPU is unstable.

If you fail almost instantly (within 30 minutes), then your vcore is too low. Try raising vcore in increments of 0.005V until you can pass at least 2 hours of blend, although it's up to you how long you want to be stable. I find that 2 hours of blend stability is equal to pretty much stable unless you are doing very intensive tasks such as folding, autocad, etc.
Prime95 uses AVX throughout it's entire testing.

Thanks. The tests don't seem to fail though, it's just the temperature that goes to the roof. Is that when I check how the FFT is? How do I check that?
post #263 of 19539
question about overclocked 4770k:

if I have a sucky cpu and a good motherboard, will it overclocked to 4.6 @ 1.25 w/ H80 cooler.

what about this:

if I have a good or decent cpu and a ok motherboard, will it be overclocked better w/ H80 cooler?
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post #264 of 19539
Quote:
Originally Posted by Forceman View Post

HWInfo also shows the Vcore correctly, along with a lot of other interesting voltages and power draws. I've been using it mostly lately.

+1

I've been using HWInfo for a long time. Not only is it pretty accurate, but you can also show any info you want on your on screen display while gaming. I have my cpu usage (all 8 threads) displayed on my OSD and I love it. thumb.gif
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post #265 of 19539
Quote:
Originally Posted by razlebol View Post

Any explanation why my temps instantly jump from an average of 78c to an average of 99c while blend stress testing with prime?

The temps are fine for 30-45 minutes and then it jumps to crazy temperatures and the cpu starts throttling. It doesn't lock or anything though and the test are still passing.

Not sure if it's different for you, but for me temps spike during minutes 15-30. Once I get to about minute 15, temps jump up from 70ish to 90. Then after about 30 mins temps start coming back down.

I read somewhere another guy said that only happens during minutes 15-30 even when doing a 24 hour test.
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post #266 of 19539
Quote:
Originally Posted by rickyman0319 View Post

question about overclocked 4770k:

if I have a sucky cpu and a good motherboard, will it overclocked to 4.6 @ 1.25 w/ H80 cooler.

what about this:

if I have a good or decent cpu and a ok motherboard, will it be overclocked better w/ H80 cooler?

Not sure whether I understand your question.

A better cooler won't turn a sucky cpu into an unsucky one. You may be able to lower temps with a better cooler (and thus open up wriggle room for more voltage), but stability remains the same. If you're stable 4.6 at 1.25v, a new cooler won't change those numbers.
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post #267 of 19539
Quote:
Originally Posted by Threx View Post

Not sure whether I understand your question.

A better cooler won't turn a sucky cpu into an unsucky one. You may be able to lower temps with a better cooler (and thus open up wriggle room for more voltage), but stability remains the same. If you're stable 4.6 at 1.25v, a new cooler won't change those numbers.

I guess it base on the cpu not the cooler?
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post #268 of 19539
CPU stability has nothing to do with the cooler. The only thing the cooler does is lower temps so you can add more voltage.
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post #269 of 19539
Quote:
Originally Posted by Threx View Post

CPU stability has nothing to do with the cooler. The only thing the cooler does is lower temps so you can add more voltage.

Cpu stability is base on the cpu and not the cooler.
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post #270 of 19539
Quote:
Originally Posted by razlebol View Post

Thanks. The tests don't seem to fail though, it's just the temperature that goes to the roof. Is that when I check how the FFT is? How do I check that?

Don't select the "blend" test if you want to avoid higher temps. When you go to begin the stress test just select large FFTs. At risk of sounding like a condescending jerk I suggest reading the text next to each type of test before clicking the start button. Each selection (Blend, Large FFTs, and Small FFTs) has a small description of what it tests and is better at testing various different components of you system and overclock. As long as you are in the low 90s you will be ok temps wise for short tests. For longer tests either try to get the temps down (better cooler, lower ambient temps, or even lower the voltage and multi) or use another stress test (OCCT is a good alternative, although you will experience similar temps). Let us know how you make out...
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