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Which CPU Stress test is more representive of real applications?

post #1 of 17
Thread Starter 
So Im trying to OC my CPU and based on 3 different stress testers, I have found 3 different configurations all with the same system that keeps the CPU stable and "safe" temps

My hardware setup is:
i5 4690k
midrange cooler (but my ambient temps are on the high end)
16 gb DDR3 1600 RAM
GTX 980ti
750W PSU

Stress tester 1:
Prime95 v2.87 with small FFT
Could only pull max 4.2ghz 1.04v before the temps went past what I call "safe"

.

Stress tester 2:
Prime95 v2.66 with blender
Highest clock I could pull was 4.5ghz 1.20v, temps were still under my "safe" temp

.

Stress tester 3:
Asus Realbench
Again, I could pull was 4.5ghz 1.20v. I tried 4.6ghz with 1.22v but the temps were slightly past my "safe" temp mark.

From what I understand, eventhough all the testers jack the CPU to 100%, they do it differently.
Tester 1 uses only small pieces of data therefore the CPU has almost no missed cache cycles and therefore has to run harder. Test 2 has a mix of small and large so there is missed cache cycles. Tester 3, idk what it is in terms of data size. Its rendering an image by testing how individual rays act so Im guessing its mixed?
So my question is, which stress test is actually more representative of real applications like games, simulations, and CAD software?

The reason for me asking this is bc if normal programs dont actually use as much small cache data points as the FFT test, then the actual "use" of the data I got from the test is pretty useless. In which case, I would use the data I received from the other tests instead.

.

Info I found on the cache size thing if you want to read more about it:
http://superuser.com...u-at-100-for-al
post #2 of 17
Try encoding stuff with h264/h265 handbrake/vidcoder
 
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Good value headphones (with equalization)
Samson SR850 Semi-Open Studio Reference Headphones
My Rig
(3 photos)
CPUMotherboardGraphicsRAM
i5 4690k @4.4Ghz Msi Z97 Gaming 5  Asus GTX 780 ti DirectCU II HyperX Savage RAM 8 Go 2400 MHZ DDR3 
Hard DriveCoolingOSMonitor
WD Green Desktop Mainstream 2 To Thermalright HR-02 Macho Rev. B Window 7 64bits Samsung SyncMaster P2470HD 
KeyboardPowerCaseMouse
Corsair Raptor K30 Be Quiet! Straight Power 10 700W  Phanteks Enthoo Pro Window Perixx MX-1000 Iron 
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Asus Xonar U3 USB samson sr 850 
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post #3 of 17
Listing wattage does not really tell us anything at all so if you are going to post info please list the brand and model and not just wattage.
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Seravee
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Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
Hard DriveOptical DriveCoolingCooling
Seagate Ironwolf Pro 10 TB LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S 
OSMonitorMonitorKeyboard
Windows 7 64 Bit Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB 
PowerCaseMouseMouse Pad
EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor 
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Sennheiser HD 598 Onkyo TX NR646  Harman Kardon HKTS 60 Dali Opticon Vokal 
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post #4 of 17
Rendering videos is more representative of real applications. I've gotten my CPU almost as hot as it gets on an AIDA 64 stress test with it. This was with Sony Vegas and I suppose any other video editing program would do the same if rendered.
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post #5 of 17
Thread Starter 
Quote:
Originally Posted by shilka View Post

Listing wattage does not really tell us anything at all so if you are going to post info please list the brand and model and not just wattage.
Like of the PSU? Its a Corsair CX750M
Quote:
Originally Posted by benjamen50 View Post

Rendering videos is more representative of real applications. I've gotten my CPU almost as hot as it gets on an AIDA 64 stress test with it. This was with Sony Vegas and I suppose any other video editing program would do the same if rendered.
Quote:
Originally Posted by MadjinnSayan View Post

Try encoding stuff with h264/h265 handbrake/vidcoder
Interesting. Ill try stress testing on some of that.
post #6 of 17
Something you should be aware of then
Why you should not buy a Corsair CX750

If you want to mess around with BIOS volt mods on your GTX 980 Ti or add a second and overclock those and the CPU you should get a better PSU.
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CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
Hard DriveOptical DriveCoolingCooling
Seagate Ironwolf Pro 10 TB LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S 
OSMonitorMonitorKeyboard
Windows 7 64 Bit Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB 
PowerCaseMouseMouse Pad
EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor 
AudioAudioAudioAudio
Sennheiser HD 598 Onkyo TX NR646  Harman Kardon HKTS 60 Dali Opticon Vokal 
AudioOtherOther
x2 Dali Opticon 2 CableMod E series PSU cable set CableMod LED Strips 
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Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
Hard DriveOptical DriveCoolingCooling
Seagate Ironwolf Pro 10 TB LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S 
OSMonitorMonitorKeyboard
Windows 7 64 Bit Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB 
PowerCaseMouseMouse Pad
EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor 
AudioAudioAudioAudio
Sennheiser HD 598 Onkyo TX NR646  Harman Kardon HKTS 60 Dali Opticon Vokal 
AudioOtherOther
x2 Dali Opticon 2 CableMod E series PSU cable set CableMod LED Strips 
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post #7 of 17
Are the big DX better ?
Edited by MadjinnSayan - 2/17/16 at 7:24am
 
Good value headphones (with equalization)
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My Rig
(3 photos)
CPUMotherboardGraphicsRAM
i5 4690k @4.4Ghz Msi Z97 Gaming 5  Asus GTX 780 ti DirectCU II HyperX Savage RAM 8 Go 2400 MHZ DDR3 
Hard DriveCoolingOSMonitor
WD Green Desktop Mainstream 2 To Thermalright HR-02 Macho Rev. B Window 7 64bits Samsung SyncMaster P2470HD 
KeyboardPowerCaseMouse
Corsair Raptor K30 Be Quiet! Straight Power 10 700W  Phanteks Enthoo Pro Window Perixx MX-1000 Iron 
AudioAudio
Asus Xonar U3 USB samson sr 850 
  hide details  
Reply
 
Good value headphones (with equalization)
Samson SR850 Semi-Open Studio Reference Headphones
My Rig
(3 photos)
CPUMotherboardGraphicsRAM
i5 4690k @4.4Ghz Msi Z97 Gaming 5  Asus GTX 780 ti DirectCU II HyperX Savage RAM 8 Go 2400 MHZ DDR3 
Hard DriveCoolingOSMonitor
WD Green Desktop Mainstream 2 To Thermalright HR-02 Macho Rev. B Window 7 64bits Samsung SyncMaster P2470HD 
KeyboardPowerCaseMouse
Corsair Raptor K30 Be Quiet! Straight Power 10 700W  Phanteks Enthoo Pro Window Perixx MX-1000 Iron 
AudioAudio
Asus Xonar U3 USB samson sr 850 
  hide details  
Reply
post #8 of 17
Thread Starter 
Quote:
Originally Posted by shilka View Post

Something you should be aware of then
Why you should not buy a Corsair CX750

If you want to mess around with BIOS volt mods on your GTX 980 Ti or add a second and overclock those and the CPU you should get a better PSU.
Oh wow. Never knew that. Thanks for the heads up!
post #9 of 17
x264 encoding (single pass or second pass; not first pass, that's just a scene complexity scan run, useful if you want a certain file size, but variable bitrate throughout the file; no heavy lifting in that. Also be aware that x264 encoder version can make a big difference on newer CPUs, as the devs keep adding support for recent extensions) is definitely a good test for extremely parallelized workloads that support many extensions/instruction sets.

Though many games don't support the latest instructions, and many games are single thread bound.

I'd just look at cpu bound benchmarks of recent games, if you're looking for real world gaming performance. gamegpu.ru have cpu heavy game situations tested with different CPUs at the bottom of most of their game tests, for example.
Edited by Tivan - 2/17/16 at 7:45am
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post #10 of 17
maybe also test unigine benchs (ie Heaven)
 
Good value headphones (with equalization)
Samson SR850 Semi-Open Studio Reference Headphones
My Rig
(3 photos)
CPUMotherboardGraphicsRAM
i5 4690k @4.4Ghz Msi Z97 Gaming 5  Asus GTX 780 ti DirectCU II HyperX Savage RAM 8 Go 2400 MHZ DDR3 
Hard DriveCoolingOSMonitor
WD Green Desktop Mainstream 2 To Thermalright HR-02 Macho Rev. B Window 7 64bits Samsung SyncMaster P2470HD 
KeyboardPowerCaseMouse
Corsair Raptor K30 Be Quiet! Straight Power 10 700W  Phanteks Enthoo Pro Window Perixx MX-1000 Iron 
AudioAudio
Asus Xonar U3 USB samson sr 850 
  hide details  
Reply
 
Good value headphones (with equalization)
Samson SR850 Semi-Open Studio Reference Headphones
My Rig
(3 photos)
CPUMotherboardGraphicsRAM
i5 4690k @4.4Ghz Msi Z97 Gaming 5  Asus GTX 780 ti DirectCU II HyperX Savage RAM 8 Go 2400 MHZ DDR3 
Hard DriveCoolingOSMonitor
WD Green Desktop Mainstream 2 To Thermalright HR-02 Macho Rev. B Window 7 64bits Samsung SyncMaster P2470HD 
KeyboardPowerCaseMouse
Corsair Raptor K30 Be Quiet! Straight Power 10 700W  Phanteks Enthoo Pro Window Perixx MX-1000 Iron 
AudioAudio
Asus Xonar U3 USB samson sr 850 
  hide details  
Reply
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