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Haswell Overclocking Guide [With Statistics] - Page 224

post #2231 of 19539
Quote:
Originally Posted by skyn3t View Post

So those spikes on load is normal or any settings that need to be change to stop the volt spikes

I notice it in ibt

It is normal, but you want to avoid that by not running stress tests while running adaptive voltage. Switch to adaptive voltage after you have dialed in your OC and voltages and are only planning real world usage. Also take care when playing around with voltage spikes like that, it can cause damage to your CPU if not monitored carefully. I read a thread in which a CPU was fried by doing a Prime 95 run with adaptive voltage.

On another note the core voltage will always spike slightly under load (0.010-0.030V approx, depending on your VID) so don't worry about that. Just set your core voltage to manual mode and you shouldn't see those voltage spikes while stress testing.
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post #2232 of 19539
Quote:
Originally Posted by BangBangPlay View Post

It is normal, but you want to avoid that by not running stress tests while running adaptive voltage. Switch to adaptive voltage after you have dialed in your OC and voltages and are only planning real world usage. Also take care when playing around with voltage spikes like that, it can cause damage to your CPU if not monitored carefully. I read a thread in which a CPU was fried by doing a Prime 95 run with adaptive voltage.

On another note the core voltage will always spike slightly under load (0.010-0.030V approx, depending on your VID) so don't worry about that. Just set your core voltage to manual mode and you shouldn't see those voltage spikes while stress testing.


yeah i always keep eyes on my volt's no worries. like i said it only happen with IBT, on XUT it is stable at 1.32v in 5 minutes stress. but it still need a bit more volt to stay stable on 4.5Ghz . reason i'm doing this all over is to see if I could low my volt after delid.



here are some result and the rest is here

Cinebench before - 71-73-72-67
Cinebench after - 59-63-62-57
Gain - 12-10-10-10

Intel burn test before - 98-99-99-96
Intel burn test after - 82-87-88-83
Gain - 16-12-11-13
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post #2233 of 19539
Quote:
Originally Posted by skyn3t View Post

yeah i always keep eyes on my volt's no worries. like i said it only happen with IBT, on XUT it is stable at 1.32v in 5 minutes stress. but it still need a bit more volt to stay stable on 4.5Ghz . reason i'm doing this all over is to see if I could low my volt after delid.

I know how it is, I once did the same thing and forgot to switch back to manual. Fortunately it was pretty low voltage to begin with so the jump didn't cause crazy temps in IBT. I believe XUT can be used with Adaptive, but I could be wrong as I haven't ever used it myself. Also video encoding sometimes causes an initial spike in voltage when starting to convert the file, but then it returns to normal levels for the rest of the process.

After switching back to Adaptive I like to run some video conversions and loops of 3D Mark 11 Physx and Combined tests only and leave it for a few hours. That way it has been tested with both manual and adaptive voltage. I can't complain seeing as I have never had a crash or restart after finalizing my OC and switching to adaptive. Or at least so far so good, although I don't play BF3 either. Total War Rome 2 seems to be pretty CPU intensive though, and that runs great with my current OC.
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post #2234 of 19539
Quote:
Originally Posted by BangBangPlay View Post

I know how it is, I once did the same thing and forgot to switch back to manual. Fortunately it was pretty low voltage to begin with so the jump didn't cause crazy temps in IBT. I believe XUT can be used with Adaptive, but I could be wrong as I haven't ever used it myself. Also video encoding sometimes causes an initial spike in voltage when starting to convert the file, but then it returns to normal levels for the rest of the process.

After switching back to Adaptive I like to run some video conversions and loops of 3D Mark 11 Physx and Combined tests only and leave it for a few hours. That way it has been tested with both manual and adaptive voltage. I can't complain seeing as I have never had a crash or restart after finalizing my OC and switching to adaptive. Or at least so far so good, although I don't play BF3 either. Total War Rome 2 seems to be pretty CPU intensive though, and that runs great with my current OC.

yes you can use Adaptive with XTU or Prime 95 up to version 26.6. Both of these don't use AVX. Funny how Intel didn't implement AVX in their stress testing tool. AVX is SandyBridge era. Now it's AVX2 and FMA3. I hope FMA3 doesn't add another 0.1V to the Vcore tongue.gif

Maybe running AIDA64 for 6hrs and XTU for 6hrs would be enough for real world stability. I am going to get my 4.4GHz stable with them and then see if I will ever get a BSOD while running H.264 or gaming or any other thing.

I take it all back. AIDA64 is hopeless. Ran AIDA64 for 6hrs just to see H.264 fail within a couple of hrs! ARGH! In that case, XTU and AIDA64 are both out. If you are stable in OCCT, it seems that you would be stable in all real world tasks. If you are Prime95 28.1 stable, even for an hour, i guess your stability is rock solid.

Now I need to up my cache ratio and memory clocks.
Edited by Anusha - 9/9/13 at 1:00am
post #2235 of 19539
Seems like prime95 27.9 is better than AIDA64 after all. My pc froze after 8hours of the first test. So I can only assume its because of too low CPU voltage. So I'm now trying 1.085 instead of 1.08
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post #2236 of 19539
Quote:
Originally Posted by wendigo4700 View Post

Seems like prime95 27.9 is better than AIDA64 after all. My pc froze after 8hours of the first test. So I can only assume its because of too low CPU voltage. So I'm now trying 1.085 instead of 1.08
Freezes usually mean that you need to give more juice to Cache or lower Cache ratio. Vcore will always give a BSOD with 0x124 or maybe 0x101. Well, that's at least how my chip works. Haswell is too weird to come to any conclusion.

On another note, I cannot up the cache ratio to 40x even with 1.24V. This is one retarded chip. I seriously doubt I will be able to run 2400MHz RAM at those speed with this CPU either.
post #2237 of 19539
I dont understand what you mean. My uncore is default. My bus speed is default at 100MHz. I'm only overclocking the CPU via multiplier. So I were asuming I had it isolated to CPU voltage only.

I'm not running prime95 28.1 tho, but 27.9
Edited by wendigo4700 - 9/9/13 at 2:58am
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post #2238 of 19539
I've been trying more settings since my last post, but I haven't been able to get my 4770K stable over 4.4GHz with a 1.35V VID.

I have, however, managed to bring up the Uncore to 4.0 GHz, and run my memory at 2666 MHz.

I'll see how my second 4770K does when it gets here.

Info for the chart:
CPU Model: 4770K
Core Multiplier: 44
CPU VID: 1.35
Vcore: 1.368
Uncore Multiplier: 40
Uncore Voltage: 1.2
Cooling Solution: H100i
Stability Test: IBT (max, 10 runs) + Aida64 (10.5 hours)
Batch Number: 313
Ram Speed: 2666 (XMP)




CPU-Z: http://valid.canardpc.com/ivlahi
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post #2239 of 19539
Quote:
Originally Posted by wendigo4700 View Post

I dont understand what you mean. My uncore is default. My bus speed is default at 100MHz. I'm only overclocking the CPU via multiplier. So I were asuming I had it isolated to CPU voltage only.

I'm not running prime95 28.1 tho, but 27.9
If logics really worked, we won't have all these nonsense crashes with Haswell.
post #2240 of 19539
well I dont know how to add more juice to the cache in the BIOS.
I just dont see, when the only thing I'm overclocking, is 100% the CPU only and nothing else. While all other voltages are left at "auto"

Only my CPU + CPU voltage are being effected here. The other settings are running default / default speeds.

I think I'll wait, untill more opinions arrives.
Edited by wendigo4700 - 9/9/13 at 3:37am
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