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Testing i7-4790k stability w/o P95 or intel burntest? - Page 2

post #11 of 16
Realbench is a good test because it tests everything and not just the cpu.
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The Banshee
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Under the DICE
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CPUMotherboardGraphicsRAM
R7 1700 ASRock X370 Taichi Zotac GTX 780 Ti OC @ 1250/1950MHz 1.212V G.SKILL Trident Z Black/White 2X8GB DDR4-3200 C... 
Hard DriveHard DriveCoolingCooling
Corsair Force LS 120GB WD Blue 1TB Phobya UC-2 LT XSPC Razor GTX 780 Ti Waterblock w/ Backplate 
CoolingCoolingCoolingCooling
Darkside LP 360mm Radiator Alphacool ST30 240mm Radiator Darkside D5 Vario @ 12V Setting 5 Bitspower Z-Multi 150 Red Reservoir  
CoolingCoolingOSMonitor
Darkside (TFC) 3/8 ID X 5/8 OD Red UV tubing TFC Black straight barb fittings Windows 8.1 Pro 64-bit LG 25UM57-P 
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post #12 of 16
OP forgot to tell us CPU speed, voltages, and other stuff.
post #13 of 16
Be careful about Prime95 versions later than 26.6 and AIDA64 FPU test.
If you have too much voltages and a cooling which is not sufficient, you may inject insanes currents in your Motherboard and CPU.

I have personnallly set up 2 overclocks (To give you a way) :
- One which is able to fullfill Prime95 v28.7 Small FFT's tests for several hours. This test is probably the most stressfulll for a CPU and is intended to test the CPU in case of intensive AVX and FMA instructions softwares.
if you can pass several hours of this tests with max temp = 80°C on cores and no errors, you are rock solid stable !
This means, max core temperatures less than 80°C at 22°c ambient temperature during this test. 12 hours from my side.
Of course, I was obliged to decrease my Vcore to fullfill this requirement, means 1,07V (Cooling=Noctua NH-D15).

- One which is dedicated to standard applications and gaming (Not using intensive AVX and FMA instructions).
For this one, no need to stress with last version of Prime95 or Aida64 FPU test, as the Vcore will be higher to get the maximum stable CPU core frequency.
For this overclock, my criterias were 12 hours of Aida64 CPU+FPU+Cache+Memory+GPU and 8 hours of ROG Realbench stress tests full RAM available on your rig.
Criteria was also here to get less than 80°C on the hottest core during those test at 22°C ambient temperature. I could reach 1,25V (But i defined 1,23V as max Vcore for long term safety).

To summarize, if you only game, try to get the higher clock with the higher Vcore to have max 80°c on hottests cores during Aida64 CPU+FPU+Cache+memory test and Realbench stress test.

If you intend to have a rock solid overclock with AVX and FMA rock solid stability in all configurations, then you have to target probably a lower Vcore to fullfill 80°c max on hottest cores in Prime95 v28.7
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INTEL Core i7-5930K @ Core=4,6GHz / Cache=4,4GHz ASUS X99-Deluxe II (BIOS 1401) GIGABYTE GeForce GTX 1080 Ti Gaming OC 11G (BIO... G.SKILL Trident Z DDR4-3200 32GB=8GBx4 CL14 @ 3... 
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MICROSOFT Windows 10 Professional 64-bit ASUS ROG Swift PG278Q LOGITECH G810 Orion Spectrum COOLER MASTER Silent Pro M2 1000W 
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ANTEC Nine Hundred Two V3 (Opened side panel) LOGITECH G402 Hyperion Fury RAZER Goliathus Control (Small) SOUND CARD REALTEK ALC1150 on-board 
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SPEAKERS CREATIVE Inspire T6160 HEADSET ACER Predator Gaming WEBCAM LOGITECH C170 PRINTER EPSON DX8450 
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post #14 of 16
If you are leaving the bios on default values, most likely the cpu is getting overvolted with P95. Verify your core voltages are staying under 1.250v while P95 is running with HWiNFO64. If you are just trying to test your cooler and not testing stability, go with a different stress test like x264. I use RealBench.
post #15 of 16
Quote:
Originally Posted by kl6mk6 View Post

If you are just trying to test your cooler and not testing stability, go with a different stress test like x264. I use RealBench.

The standard test to evaluate cooling is Prime95 v26.6 small FFT's : this is the one used to calibrate DTS of Intel cores also.
Read this interesting link (Writtent by an intel thermal specialist) :

http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html
Edited by GRABibus - 2/1/16 at 12:23pm
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My war machine
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CPUMotherboardGraphicsRAM
INTEL Core i7-5930K @ Core=4,6GHz / Cache=4,4GHz ASUS X99-Deluxe II (BIOS 1401) GIGABYTE GeForce GTX 1080 Ti Gaming OC 11G (BIO... G.SKILL Trident Z DDR4-3200 32GB=8GBx4 CL14 @ 3... 
Hard DriveHard DriveOptical DriveCooling
SSD SAMSUNG 850 PRO 1TB (System) HDD WESTERN DIGITAL Caviar Blue 1TB SATA3-600 6... LG BH16NS40 NOCTUA NH-D15 with 2 fans NOCTUA NF-A15 PWM pu... 
OSMonitorKeyboardPower
MICROSOFT Windows 10 Professional 64-bit ASUS ROG Swift PG278Q LOGITECH G810 Orion Spectrum COOLER MASTER Silent Pro M2 1000W 
CaseMouseMouse PadAudio
ANTEC Nine Hundred Two V3 (Opened side panel) LOGITECH G402 Hyperion Fury RAZER Goliathus Control (Small) SOUND CARD REALTEK ALC1150 on-board 
AudioAudioOtherOther
SPEAKERS CREATIVE Inspire T6160 HEADSET ACER Predator Gaming WEBCAM LOGITECH C170 PRINTER EPSON DX8450 
Other
FTTH INTERNET CONNECTION : 300Mbps DL / 110Mbps UL 
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post #16 of 16
Use fft size of 1344/1344. For some reason this size catches instabilities quickly while at the same time doesn't drive temperature up very high.
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