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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 466

post #4651 of 67219
Quote:
Originally Posted by giooliva View Post

so i cant turn off thath throttle feauture, when i cooled it properly it would be fine right?

If that is what is causing it, (which I'm only assuming it is) then yes, cooling it better should stop it.
post #4652 of 67219
Quote:
If that is what is causing it, (which I'm only assuming it is) then yes, cooling it better should stop it.

may i know what is you cputin temp sir?

what is the recommended temperature for core? and cputin? i thinks the temps are the one holding my oc, i try to place a fan on the backplate but unfortunately it still get 71 deg cputin while coretemps are, below 60
post #4653 of 67219
i also got weird temps on speed fan it is not the same on any temperature monitoring software i had? maybe im a victim of wrong temps reading?
post #4654 of 67219
I use Open Hardware Monitor I find it to be the most appealing to myself.
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Sparkplug
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post #4655 of 67219


Mine is labeled CPU, not CPUTIN. (This changes depending on who made your motherboard.)

I also highlighted my vCore(top) and core temps at the bottom.
post #4656 of 67219
Quote:
Originally Posted by giooliva View Post

may i know what is you cputin temp sir?
what is the recommended temperature for core? and cputin? i thinks the temps are the one holding my oc, i try to place a fan on the backplate but unfortunately it still get 71 deg cputin while coretemps are, below 60

Suggested max temps for cores are 62C. I don't know of a set in stone socket maximum.

This is what I did with mine, It also helps out the 'fets to a degree.

post #4657 of 67219
Some guy said that logic dictates that if only 1 application out of 5 fails consistently then there must be something wrong with the program.

Actually, that is not the case.

When a software engineer makes an application such as this, she/he must decide what to test and how to test it.
For all you know, most of the "test" applications you use don't actually test anything. That is, it could very well be that they just give the CPU some work to do and if that work finishes then you "passed". You have no idea if the computational results of each operation were even checked by the software.

Simplified example to show the point:

Think of these as series of operations in 1 run:
2 + 5 (= 7 answer ignored, not verified)
5 + 8 (= 20 answer ignored, not verified)
23 / 3 (= 7.5784 answer ignored, not verified)
45 / 5 (= 8.9999 answer ignored, not verified)
...

Congratulations! You passed. smile.gif (Because each operation completed without the app crashing)

A smarter test would instead verify the result of each operation:

2 + 5 = 7 (true)
5 + 8 = 20 (Wrong, programmer bothered to check the result, now must decide to terminate test or let it run)
23 / 3 = 7.5784 (Wrong, programmer bothered to check the result, now must decide to terminate test or let it run)
46 / 5 = 9.9999 (Wrong, programmer bothered to check the result, now must decide to terminate test or let it run)

Keeping this simple, as you can see, you have no idea what is actually done by these applications at even such a trivial level. Even if some operations are checked other operations may not be.
Adding to that, you don't know what actual operations are being performed. In the end, at the assembly level, it is all simple registry operations, which if you know anything about programming would know that these operations are CPU agnostic across x86 x86-64. In other words, they don't have to rewrite the app just because AMD release a new x86-64 CPU...

Prime95 does not have FX8320 issues because I have ran it for 12hrs with no errors.
Overclocked, for me, Prime95 stability is vcore related. With less vcore test fails sooner. So it is obvious that this is an overclock issue and not faulty code issue. The code doesn't become better code proportional to the amount of extra volts I add (test runs longer)... The code is fixed. With high volts the overclock is stable because the results of the operations performed by prime95 are correct and if I give it less volts the results are not correct. Simple as that.

I have read what the IBT guy said (that IBT can heat better and find stability issues faster than Prime95). In practice I don't find this to be true at all. It doesn't heat up my FX8320 or 990FXA mobo any better than Prime95. Nor does it ever find errors for me. Even when extremely unstable and Prime95 finds error in 3 min. Most other benchmarks barely heat up my FX8320. I've ran all the top of benchmarking apps and my scores are what they should be but these apps barely budge the stock temps. Prime95 maxes them (at 60 deg C).
Edited by bios0110 - 11/30/12 at 10:33pm
post #4658 of 67219
Have a look in the change log, They had to fix bugs for SB and IB using the AVX instruction set. PD has the same instruction set.
post #4659 of 67219
Prime95 has problems, can we please drop this?

https://www.google.com/search?q=prime95+stock+crash&ie=utf-8&oe=utf-8&aq=t

Even Athlons have had problems running Prime95 before it got patched.
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Tyrant Kuma
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Starscythe
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Mobility
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Opteron 8431 Opteron 8431 Opteron 8431 Opteron 8431 
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Super Micro h8qme-2+ Sapphire 4870 Samsung DDR2 ECC 667mhz western digital caviar blue 
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FX 8350 stock cooler FX 6300 stock cooler Gentoo Linux 2x Silverstone PSU 
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Custom Fabbed Steel Case 
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AMD FX 8350 gigabyte 990FXA-UD5 7970 Mushkin Enhanced Blackline 16GB 
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Gentoo Linux Windows 7 x64 Yamakasi Catleap Q270 Corsair K90 
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post #4660 of 67219
Quote:
Originally Posted by bios0110 View Post

Some guy said that logic dictates that if only 1 application out of 5 fails consistently then there must be something wrong with the program.
Actually, that is not the case.
When a software engineer makes an application such as this, she/he must decide what to test and how to test it.
For all you know, most of the "test" applications you use don't actually test anything. That is, it could very well be that they just give the CPU some work to do and if that work finishes then you "passed". You have no idea if the computational results of each operation were even checked by the software.
Simplified example to show the point:
Think of these as series of operations in 1 run:
2 + 5 (= 7 answer ignored, not verified)
5 + 8 (= 20 answer ignored, not verified)
23 / 3 (= 7.5784 answer ignored, not verified)
45 / 5 (= 8.9999 answer ignored, not verified)
...
Congratulations! You passed. smile.gif (Because each operation completed without the app crashing)
A smarter test would instead verify the result of each operation:
2 + 5 = 7 (true)
5 + 8 = 20 (Wrong, programmer bothered to check the result, now must decide to terminate test or let it run)
23 / 3 = 7.5784 (Wrong, programmer bothered to check the result, now must decide to terminate test or let it run)
46 / 5 = 9.9999 (Wrong, programmer bothered to check the result, now must decide to terminate test or let it run)
Keeping this simple, as you can see, you have no idea what is actually done by these applications at even such a trivial level. Even if some operations are checked other operations may not be.
Adding to that, you don't know what actual operations are being performed. In the end, at the assembly level, it is all simple registry operations, which if you know anything about programming would know that these operations are CPU agnostic across x86 x86-64. In other words, they don't have to rewrite the app just because AMD release a new x86-64 CPU...
Prime95 does not have FX8320 issues because I have ran it for 12hrs with no errors.
Overclocked, for me, Prime95 stability is vcore related. With less vcore test fails sooner. So it is obvious that this is an overclock issue and not faulty code issue. The code doesn't become better code proportional to the amount of extra volts I add (test runs longer)... The code is fixed. With high volts the overclock is stable because the results of the operations performed by prime95 are correct and if I give it less volts the results are not correct. Simple as that.

I was that guy, and I said it should be investigated, not necessarily wrong.

I simply can't wrap my head around how all other tests are now suddenly broken, and apparently don't stress your system correctly allowing 7+ hrs of stable testing, all because Prime95 is infallable. I'm done with this topic (not out of anger/rage, just that this topic won't die.)
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