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post #21271 of 22487
Because 27.9 uses AVX too hard too. The 26.6 is recommended by intel because it produces more realistic load.

Edit: Btw the guide I posted was written by der8auer.

"The latest Intel CPUs feature the AVX instruction. Prime 95 27.7 and newer versions supports the AVX instruction which results in a higher load and core temperature. This will result in a lower overclockability, but a higher stability. However, almost no program or game can handle the AVX instruction. If you’re not using anything which features AVX, you can use Prime 95 26.6 without AVX so you might reach higher clocks."
Edited by Lahatiel - 10/16/16 at 8:54am
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post #21272 of 22487
Quote:
Originally Posted by fat4l View Post

Whats up guys ?
What is the quickest way you test your OC ?
I changed my mobo recently(Hero->Formula) so I decided to retest my OC. CPU freq, cache freq, VRIN volts.

Is running x264 still the "best" way ? (This thread: http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics/0_30)
Or maybe Prime95 27.9 1344 in-place ?
I'm getting some weird "instability errors" in Asus realbench 2.44 and I bet its related to software.

thumb.gif

Hi

Dunno about the quickest one but all I ever do is run 10 loops of the x264 Stability Test v2.06 and call it a day. I am not even adding the 0.02V, afterwards, as wisely advised in such situations. I've used three different i7-4790K CPUs since I've joined, in various OC profiles from 4700 MHz up to my current per-core of x50 x50 x 49 x 48, cache x44. Never had any issue after passing 10 loops. Take in serious consideration that your usage, what you do with your computer, is very-very important.
    
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post #21273 of 22487
I just play BF4 at this point to stress test. That thing is nuts. I've had an overclock pass 10 loops of x265 (Seems more stressful than x264 but finishes quicker) and 4 hours of RealBench, only to fail at BF4. The strangest thing is that a reboot usually led to stability, which I find very very strange, but I digress. Anyways, all I have to say is... DICE pls.
post #21274 of 22487
Nice replies guys! +rep
Thanks

I will try prime 95 26.6. How long for should it run to "call it a day" ?
All I do is playing games. No rendering etc.

PCE!

edit:/
does anyone use OCCT ? CPU:OCCT Large data set ? Does it use AVX ?

How do you test cache ? Aida cache test?
Edited by fat4l - 10/16/16 at 10:12am
post #21275 of 22487
Quote:
Originally Posted by fat4l View Post

Nice replies guys! +rep
Thanks

I will try prime 95 26.6. How long for should it run to "call it a day" ?
All I do is playing games. No rendering etc.

PCE!

Thank you smile.gif

Personally, I cannot help you when it comes to Prime, last time I ever used it was with my AMD FX-8350. It depends on how much of a hard time it will give you, temps and such tongue.gif, I'd say run it for an hour (?) and then play your favorite game(s).
smile.gif

Quote:
Originally Posted by tolis626 View Post

I just play BF4 at this point to stress test. That thing is nuts. I've had an overclock pass 10 loops of x265 (Seems more stressful than x264 but finishes quicker) and 4 hours of RealBench, only to fail at BF4. The strangest thing is that a reboot usually led to stability, which I find very very strange, but I digress. Anyways, all I have to say is... DICE pls.

I would like to use the x265 as well, but it requires to set something up in Windows, in order for it to function, and I'm bored.
Hey man, what happened with your H110 ? smile.gif
    
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post #21276 of 22487
Thanks too! smile.gif

For a first impression 30min or up to one houre should be enough. To realy validate your settings I recommend the time you usually use your PC per day +30 or 60min.
If your PC is on 24/7 (and has some workload at night) I would test 24 hours. If you only play 2 hours a day 2 1/2 - 3 hours testing can be sufficient.

Edit:
Overclocking 4790k cache (uncore in general) isn't a game changer above 4GHz. In fact some overclockers noticed a performance loss.
http://www.overclock.net/t/1427411/haswell-uncore-same-or-lower-than-cpu-speed
http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics
Edited by Lahatiel - 10/16/16 at 10:38am
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Octaman
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post #21277 of 22487
A combination of tests and knowing your CPU needs is the fastest way. Prime is kind of useless, use real world applications that are complex. Encoding is one of those and easy to batch run. You want to find the limit, know the age of your CPU and then raise the voltage needed accordingly. Or keep the voltage and drop multiplier by 1 when you find that limit.
post #21278 of 22487
So here I am again smile.gif

I decided to retest my 5100MHz + 4500MHz cache.
1.35V and 1.2V in bios. VRin = 1.95V and LLC=7.
My ram is running 4x4GB 2666MHz, 10-12-12-31 1T, 1.65V in bios.

I tested it for a while now and this looks very primissing.

I did hour of prime95 26.6 1344k(CORE!) and no issues.
I did cinebench 10x in a row. Same for XTU Bench.
I did 8 hours XTU stability test.
I will try aida64 for 8 hours, but I don't find aida to be stressful enough.

I also did 20 loops(~2.5 hours) of H264 v2.06 and no issues.

Max temps ~62C with 5100MHz and 1.35V.
What do you think, for gaming ? biggrin.gif


post #21279 of 22487
Everything looks great, congratulations for your awesome CPU! One "objection" : next time use HWiNFO64 smile.gif
    
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Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 250 GB SanDisk Extreme Pro 240GB Samsung 840 PRO 128GB Plextor PX-128M5S 128GB 
Hard DriveCoolingCoolingCooling
WD 1002FAEX 1TB Caviar BLACK (in enclosure) Noctua NH-D15S Corsair H110 2 x Noctua NF-A14 industrialPPC-2000/3000 PWM ... 
CoolingCoolingCoolingOS
Case Fan: 1 x Noctua NF-A14 PWM (rear, exhaust) Case Fan: Noctua NF-S12A PWM (front, intake) Case Fans: 2 x Noctua NF-S12A FLX (front, intake) Windows 10 Pro 64 bit 
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KeyboardPowerCaseAudio
Microsoft Ergonomic keyboard 4000 Corsair AX760 (Platinum); EVGA SuperNova 750 G2 Corsair Air 540 Asus Xonar Essence STX II 
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CPUMotherboardGraphicsRAM
Intel Core i7-4790K ASRock Z97 OC Formula; ASUS MAXIMUS VII HERO; G... Gigabyte GV-N66TOC-2GD G.SKILL F3-1866C8D-16GTX 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 250 GB SanDisk Extreme Pro 240GB Samsung 840 PRO 128GB Plextor PX-128M5S 128GB 
Hard DriveCoolingCoolingCooling
WD 1002FAEX 1TB Caviar BLACK (in enclosure) Noctua NH-D15S Corsair H110 2 x Noctua NF-A14 industrialPPC-2000/3000 PWM ... 
CoolingCoolingCoolingOS
Case Fan: 1 x Noctua NF-A14 PWM (rear, exhaust) Case Fan: Noctua NF-S12A PWM (front, intake) Case Fans: 2 x Noctua NF-S12A FLX (front, intake) Windows 10 Pro 64 bit 
OSOSMonitorMonitor
Windows 10 TP KDE Neon Developer Stable HP ZR2440w Dell U2311H 
KeyboardPowerCaseAudio
Microsoft Ergonomic keyboard 4000 Corsair AX760 (Platinum); EVGA SuperNova 750 G2 Corsair Air 540 Asus Xonar Essence STX II 
AudioOtherOther
Sennheiser HD 600 Aquaero 5LT  THRUSTMASTER GPX LIGHTBACK FERRARI F1 GAMEPAD 
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post #21280 of 22487
@fat4l Wow, what a chip! You obviously don't need to wait for Kaby Lake to hit 5GHz. BTW what SA and IO voltages are you running?
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