Haswell Overclocking Guides / Results

[ehume]

Re: Haswell Overclocking Guides / Results

Web search for CPU-Z 1.64.3?
It's already 3 weeks in my sticky here.

I forgot where I first saw it, so I had to web-search. Gettin fergetfool.

[ehume]

Re: Haswell Overclocking Guides / Results

OK. I am stable at 4.7GHz, and I booted once into 5.0GHz.

Here is 4.7GHz, all stock except Vcore = Normal + 0.222 Volts:

[ehume]

Re: Haswell Overclocking Guides / Results

Here is 4.8GHz, all stock except Vcore = Normal + 0.3 Volts:



I'd do them all together, except I am being limited to one attachment per post.

[ehume]

Re: Haswell Overclocking Guides / Results

Here is 4.9GHz, all stock except Vcore = Normal + 0.399 Volts:



Note how the Voltages have risen.

[profJim]

Re: Haswell Overclocking Guides / Results

@ehume
You can include multiple images in a single post by using the Insert Image option and pasting the web address of each picture, one at a time, from a website such as DropBox, or many media/file sharing sites. It's easiest to do this when you use the Go Advanced posting option where you can preview the results one or more times while composing your post.

[ehume]

Re: Haswell Overclocking Guides / Results

Here is 5.0GHz, Vcore = Normal + 0.399 Volts. Vrin = 2.0 Volts. Uncore = 4.5 GHz. A couple of helper Voltages at Normal + 0.1 - 0.2 Volts:



Canard Link

That has my handle on it. I apologize that it's only 4999.96 MHz. I tried rebooting to catch a better CPU speed, but the rig wouldn't boot the second time. I thought I should not push my luck. So what you see is a CPU just barely stable enough to boot -- once.

BTW -- Gigabyte tech support told me that Intel's Adaptive Voltage is part of Gigabyte's Voltage offset.

[ehume]

Re: Haswell Overclocking Guides / Results

@ehume
You can include multiple images in a single post by using the Insert Image option and pasting the web address of each picture, one at a time, from a website such as DropBox, or many media/file sharing sites. It's easiest to do this when you use the Go Advanced posting option where you can preview the results one or more times while composing your post.

Thanks. I'll do that next time.

[boondocks]

Re: Haswell Overclocking Guides / Results

So far I've been able to run Aida stress test for several hours @ 4.5. When I was trying to run Prime95 12K fft's it would always crash within an hour....so I wonder how stable it really is. Supposedly Aida stress test is more "real world" stable, I don't know....
I may be swapping this board for a replacement anyway, got a few more days left at Newegg before the 30 day limit is up.

[profJim]

Re: Haswell Overclocking Guides / Results

It will be interesting to see what Sin0822 and the other experts say about stress testing Haswell systems.
It sounds like there might be a new normal when it comes to which stress tests should or shouldn't be used with Haswell.

[boondocks]

Re: Haswell Overclocking Guides / Results

Intel is supposedly saying Aida is the preferred test....and I can run it for hours @ 4.5 and not get hotter than 81c which is good.
I know that with Ivy some people that passed >12 hours Prime 95 testing claimed to crash and burn while gaming. All I know is that when I was able to run >12 hours P95 I never had any crashes.
But does it make sense that if you can't pass repeated passes of (insert FFT size here) a Haswell system is not stable? I don't know.

[wazza300]

Re: Haswell Overclocking Guides / Results

boondocks just use it day to day and see if its stable,far better than any stress tests,i only use them as a rough guide

@ehume you need to stress it max stress 5 runs in ibt @5ghz then ill believe you its stable

[ehume]

Re: Haswell Overclocking Guides / Results

boondocks just use it day to day and see if its stable,far better than any stress tests,i only use them as a rough guide

@ehume you need to stress it max stress 5 runs in ibt @5ghz then ill believe you its stable

That is a great laugh. I couldn't even get it to boot a second time. I'll take the trophy run and . . . . run!


I would, though, like a recommendation for a reliable LinX with AVX, or an IBT with AVG.

[wazza300]

Re: Haswell Overclocking Guides / Results

I have no idea,i think its just a case of waiting for those softwares to catchup with the new instruction set of the chips?

haswell to me seems completely different in the way it overclocks to anything previous

[ehume]

Re: Haswell Overclocking Guides / Results

haswell to me seems completely different in the way it overclocks to anything previous

I think I agree, although my experience is only with i7 860 & 875k. I actually OC'd my 875k the HW way -- with a BCLK of 133MHz and a variable multiplier up to 30x. It worked well for years, until I had a few crashes. I backed the multi down to 27x and have had no problems since.

The 860, though, still does its 182MHz x 22 = 4004MHz just fine. I still run LinX or OCCT/Linpack to test temps. OTOH, the GA-P55A-UD3P has had the 860's BCLK up to 232MHz and the CPU speed up to 4664MHz in trophy runs.

It is interesting that, although I can't really get it stable much over 4GHz, the 860 will do a trophy run up to 4664MHz. That's nearly two thirds of a GHz. My new 4770k, OTOH, will trophy run less than one third of a GHz over its stable speed.

But the 860 was stability-limited, not temp-limited. With the NH-D14 using stock fans I got around 55c TOA (temp over ambient), and I could get that temp down lower with more powerful fans. The 4770k seems stability-limited (albeit not trying very hard to fiddle with non-Vcore settings) above 4.7GHz, with a TOA around 70c. Because of the thermal-blanket IHS, it gets hot fast. So I imagine if I fiddled with non-Vcore settings I could get this chip stable at 4.8GHz, but it would be thermally-limited at that point.

Bottom line is that I think my 4770k is a better overclocker than my 860, which is a pretty good specimen of its species.

[boondocks]

Re: Haswell Overclocking Guides / Results

My 4.5 OC was running pretty good with these settings (all will vary from chip to chip)
LLC -Extreme
clock - 45
uncore - 36
cpu VRIN override - 1.8
vcore - 1.26
cpu vRing - 1.25

That was giving me 1.272 vcore while running Aida stress test.