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Getting 2 different temp readings for FX 6300 - Page 2

post #11 of 16
Quote:
Originally Posted by cpmee View Post

63C while running prime95 isnt all that bad. Other than prime95 and other stability test programs, no normal programs load the cpu more than around 60% or so and temps are way lower. 1.475V is under the 1.55 VID max set by AMD for shipping out cpus.
Im at 4.8+ghz at 1.48v prime95, IBT AVX stable and top off at 65C core with my CM 212+ and 2 fans on it. (plus a fan on the back of the mobo and a vrm fan that also aims at the socket, so my socket temps are less than my core temps) I also have Cool'N'Quiet enabled so that while idling or surfing the web or other no load uses, Im at 1.6ghz and .8 vcore. When an application requires it, it jumps into gear at 4.8+ghz. smile.gif

With your Tuniq Tower 120 EXtreme rev 1, you should have slightly better temps than me. Do you have 2 fans on it ? Its design looks like it cries out for push-pull fans.

Agree - unless you are some super duper bencher or run work base machines with OC's ( which i wouldnt do ) then stability is paramount .

But me - i use aid64 or prime for about 20mins to give me an idea of temps, then i'm out of there. Got better things to do then hang around for 24hrs or a ruddy week to say,

' Look honey , my computer passed, extra chips on my plate tonight. '

And say it failed after 12 hrs and you did the same test without altering anything and it passed 24hrs, what then - tells you sod all. and within that 24 hrs was it the the OC that failed or a glitch elsewhere ?

Ive never done more than 20 -30 mins and have had no probs with my computer or any other build.

Mine passed a week - epeen biggrin.gif

Try and get your comp to work 100% - ruddy hard to do so under normal use thumb.gif
post #12 of 16
Quote:
And say it failed after 12 hrs and you did the same test without altering anything and it passed 24hrs, what then - tells you sod all. and within that 24 hrs was it the the OC that failed or a glitch elsewhere ?

Absolutely true. The longer a stability test runs, the more chance you could get an external power hiccup somewhere, especially in bad weather.
    
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FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
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post #13 of 16
Thread Starter 
Quote:
Originally Posted by ladcrooks View Post

Agree - unless you are some super duper bencher or run work base machines with OC's ( which i wouldnt do ) then stability is paramount .

But me - i use aid64 or prime for about 20mins to give me an idea of temps, then i'm out of there. Got better things to do then hang around for 24hrs or a ruddy week to say,

' Look honey , my computer passed, extra chips on my plate tonight. '

And say it failed after 12 hrs and you did the same test without altering anything and it passed 24hrs, what then - tells you sod all. and within that 24 hrs was it the the OC that failed or a glitch elsewhere ?

Ive never done more than 20 -30 mins and have had no probs with my computer or any other build.

Mine passed a week - epeen biggrin.gif

Try and get your comp to work 100% - ruddy hard to do so under normal use thumb.gif

I agree i have never ran any test more than an hour or 2 mostly because most of my motherboard didn't have any VRM cooling unlike my sabertooth but i also never had any issue.
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post #14 of 16
Careful using cine-bench as a stress test for these chips. It's an FPU load that does not saturate an FX chip very well. It can lead to the false impression that your overclock is going to be "thermally stable" under other real world conditions.

Confirm that your cooling solution is strong enough by running highly parallel integer instruction heavy workloads, OR a stress loop script (power virus.) If you can stay within max temps without stability problems (under 70C reported core temps) on a test like this that lasts ~15 minutes (things usually stabilize after ~10 minutes), then you *should* be fine in any real-world workload. At overclocked speeds, instability usually shows up BELOW 70C (reported temps). In my experience, a "stress test" needs to stay under 65C (reported) to be long term stable on my FX-6300

To give an idea of the difference in load between cinebench, and for instance, compiling, It's nearly impossible for my CPU to handle sustained compiling workloads at any speed beyond 5.0ghz (1.43V), At 5.1ghz (requires about 1.475V) it will eventually go past 65C core temps, which will crash it. On the other hand, I can get through a cinebench test at 5.4ghz (1.55V) without crashing or overheating. Trying to compile something at 5.4ghz would require ~25% more power dissipation than cinebench, which would immediately overwhelm the cooling and crash.


In my experience, compiling and video trans-coding will show instability and thermal problems much faster than prime95. I don't even bother with p95, if I can compile a linux kernel (I do it 3-6 times, which only takes about 5-10 minutes total) and transcode without errors for 10-20 minutes or so that's MORE stable than P95 will ever confirm for me. I can pass P95 all night then crash within 10 seconds of transcoding. I don't know why P95 is held to such high regard for stability testing I find it to be useless. Maybe the linux version sucks I don't know.



Notice I'm using the term "reported" temps a lot. The actual core temp, and the reported core temp, are not likely even remotely similar. The important thing though, is to keep those "reported" temps in check, as they are "relative" to real temps in a way. Hitting 70C "reported" temps probably means 90C+ junction temps in the CPU.
     
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CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
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PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
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post #15 of 16
Thread Starter 
Quote:
Originally Posted by mdocod View Post

Careful using cine-bench as a stress test for these chips. It's an FPU load that does not saturate an FX chip very well. It can lead to the false impression that your overclock is going to be "thermally stable" under other real world conditions.

Confirm that your cooling solution is strong enough by running highly parallel integer instruction heavy workloads, OR a stress loop script (power virus.) If you can stay within max temps without stability problems (under 70C reported core temps) on a test like this that lasts ~15 minutes (things usually stabilize after ~10 minutes), then you *should* be fine in any real-world workload. At overclocked speeds, instability usually shows up BELOW 70C (reported temps). In my experience, a "stress test" needs to stay under 65C (reported) to be long term stable on my FX-6300

To give an idea of the difference in load between cinebench, and for instance, compiling, It's nearly impossible for my CPU to handle sustained compiling workloads at any speed beyond 5.0ghz (1.43V), At 5.1ghz (requires about 1.475V) it will eventually go past 65C core temps, which will crash it. On the other hand, I can get through a cinebench test at 5.4ghz (1.55V) without crashing or overheating. Trying to compile something at 5.4ghz would require ~25% more power dissipation than cinebench, which would immediately overwhelm the cooling and crash.


In my experience, compiling and video trans-coding will show instability and thermal problems much faster than prime95. I don't even bother with p95, if I can compile a linux kernel (I do it 3-6 times, which only takes about 5-10 minutes total) and transcode without errors for 10-20 minutes or so that's MORE stable than P95 will ever confirm for me. I can pass P95 all night then crash within 10 seconds of transcoding. I don't know why P95 is held to such high regard for stability testing I find it to be useless. Maybe the linux version sucks I don't know.



Notice I'm using the term "reported" temps a lot. The actual core temp, and the reported core temp, are not likely even remotely similar. The important thing though, is to keep those "reported" temps in check, as they are "relative" to real temps in a way. Hitting 70C "reported" temps probably means 90C+ junction temps in the CPU.

where do i find this "reported temp"?
Tha Beast!
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Kingston 480GB SSD HGST 2TB Corsair H100i Windows 10 Home 64-bit 
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post #16 of 16
Quote:
where do i find this "reported temp"?

Use the latest version of AMD OverDrive. Open up CPU status and observe Thermal Margin and run HWiNFO64 Sensor Status at the same time and observe CPU 0, which is the core temp. From that you can deduce what your max Thermal Margin temperature is per AMD.
    
CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
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