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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 472

post #4711 of 67227
Quote:
Originally Posted by Uxorious View Post

I am one of those unfortunate users (MSI 990XA-GD55 + FX-8350) with stability problems.
At stock settings, the system is unstable when running Prime95. Most of the time, it just fails rounding, but once in a while it spontaneously resets or BSODs.
I have never seen the voltage drop below 1.296 (I think that was the value), and I tried increasing the voltage significantly to compensate for any droops ... that removed the resets/BSODs, but the calculation errors persisted.
The errors were *consistently* on the core 7/8 pair, so there's a reasonable chance the CPU is faulty ... so I RMA'd it yesterday :-(
I guess the power-distribution on the CPU could also just have the worst droop in that corner of the die ... I guess I'll see when I get a replacement.
I
Sorry you are having troubles frown.gif
It was my experience that workers 1-4 would never fail, 5/6 maybe and 7/8 most frequently, interesting that you saw the same cores failing that I do.
The power delivery system on the gd-80 is a little more elaborate than the 55's and 65's. One difference is that it has drmos which is aids in stability.
I'm curious to know if you had thouroghly tested your ram indepently of the prime 95 tests? Mine is touchy with memory voltage/timings/speed.
In every other build I have done I have never thought it was necessary to place a fan in the case specifically for vrm cooling, until I overclocked this cpu. It's a good idea to get some air flowing acrossed them if they are going to be feeding 8 cores at 4 ghz +
Hope you have better luck with your new board smile.gif
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post #4712 of 67227
Quote:
Originally Posted by cssorkinman View Post

It was my experience that workers 1-4 would never fail, 5/6 maybe and 7/8 most frequently, interesting that you saw the same cores failing that I do.

Core 8 would fail instantly ... Core 7 within 30 seconds, and I saw core 6 fail once in all the testing.
Quote:
Originally Posted by cssorkinman View Post

I'm curious to know if you had thouroghly tested your ram indepently of the prime 95 tests? Mine is touchy with memory voltage/timings/speed.

Yes, I tested the RAM for a full day in the 8350 rig, and for a full day more in my i7 ... no problems whatsoever.

I'm all for adding extra cooling when overclocking, but this thing wasn't even stable at stock :-(
Hopefully the replacement will arrive soon.
post #4713 of 67227
Thread Starter 
Quote:
Originally Posted by Uxorious View Post

Quote:
Originally Posted by cssorkinman View Post

I have also seen that some MSI users have been having trouble running stability programs at stock voltages/speeds. Here is my experience: stock vid is 1.28 @ 4ghz , it needs to maintain both of those values to be stable enough to pass prime 95. IF turbo tries to kick in or there is enough vdroop for it to drop below 1.28 volts, it will not pass prime. In my case at that clock and voltage it will droop .03 volts.

I am one of those unfortunate users (MSI 990XA-GD55 + FX-8350) with stability problems.
At stock settings, the system is unstable when running Prime95. Most of the time, it just fails rounding, but once in a while it spontaneously resets or BSODs.
I have never seen the voltage drop below 1.296 (I think that was the value), and I tried increasing the voltage significantly to compensate for any droops ... that removed the resets/BSODs, but the calculation errors persisted.

The errors were *consistently* on the core 7/8 pair, so there's a reasonable chance the CPU is faulty ... so I RMA'd it yesterday :-(
I guess the power-distribution on the CPU could also just have the worst droop in that corner of the die ... I guess I'll see when I get a replacement.

Ya, a BSOD isn't prime's fault, so good thing you RMA'd.
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post #4714 of 67227
Quote:
Originally Posted by Uxorious View Post

I am one of those unfortunate users (MSI 990XA-GD55 + FX-8350) with stability problems.
At stock settings, the system is unstable when running Prime95. Most of the time, it just fails rounding, but once in a while it spontaneously resets or BSODs.
I have never seen the voltage drop below 1.296 (I think that was the value), and I tried increasing the voltage significantly to compensate for any droops ... that removed the resets/BSODs, but the calculation errors persisted.
The errors were *consistently* on the core 7/8 pair, so there's a reasonable chance the CPU is faulty ... so I RMA'd it yesterday :-(
I guess the power-distribution on the CPU could also just have the worst droop in that corner of the die ... I guess I'll see when I get a replacement.

BSOD is indicative of some serious problem. Was the CPU the only thing you changed in your system ? Or was this a new build ?
Bad RAM can be a pretty good source of BSODs too, not just bad CPU .

Edit: just saw your post about testing the RAM in the i7.

I have seen cases where DDR3 RAM sold for Intel doesn't work correctly on AMD. It's weird.
But it's worth running memtest86 on the actual box you are having the problem on, not another box.

FYI :
http://www.patriotmemory.com/forums/archive/index.php/t-7405.html?s=cb3f198b5515d2c4c9953368f1350645

I got 2 sets of 16GB DDR3 Patriot G2 memory that just wouldn't work with my Phenom II. My partner drove to the Patriot HQ to get the second set same day. Very unlikely both sets were faulty. Ended up returning the Patriot to Fry's, and swapping them for Corsair modules, and they worked fine out of the box. Go figure. I had no problem with some other Patriot modules on my FX-8120 before.

If this is a new build or new memory modules, I would definitely run memtest86 before doing anything else, OC or not.
Edited by madbrain - 12/1/12 at 1:06pm
post #4715 of 67227
Quote:
Originally Posted by madbrain View Post

Edit: oh, and my Prime95 run is 18 hour stable so far on my FX-8350 at stock settings on my GA-990FXA-UD3 rev 1.1 and F9 BIOS. I'm almost ready to call it a day. I'm supposed to receive some 32GB DDR3-1866 from newegg, if it comes today that will definitely be good reason to stop that run. memtest86 might be in order though before I do anything else.

That 32GB g.skill RAM just showed up in my mailbox, so I'm stopping that Prime95 run. 21 hours on stock with the FX-8350, good enough for me.
post #4716 of 67227
Do you happen to know the batch and VID of your chip Uxorious?
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post #4717 of 67227
Quote:
Originally Posted by cssorkinman View Post

Do you happen to know the batch and VID of your chip Uxorious?

Since I sent it back for the RMA, all I have is a picture I took of the chip...

AMD FX
FD8350FRW8KHK
FA 1237PGN
9H86032J20028
DIFFUSED IN GERMANY
MADE IN MALAYSIA
(C) 2011 AMD
post #4718 of 67227
Thread Starter 
Quote:
Originally Posted by Uxorious View Post

Quote:
Originally Posted by cssorkinman View Post

Do you happen to know the batch and VID of your chip Uxorious?

Since I sent it back for the RMA, all I have is a picture I took of the chip...

AMD FX
FD8350FRW8KHK
FA 1237PGN
9H86032J20028
DIFFUSED IN GERMANY
MADE IN MALAYSIA
(C) 2011 AMD

1237, interesting... those with that batch were having good OCs in the 83** thread if I remember right. Maybe I'm thinking 1236?
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post #4719 of 67227
I have a batch 1237 and it is also horrible, but its not unstable @ stock so I do not think it is RMA able just because its a bad overclocker.
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post #4720 of 67227
Quote:
Originally Posted by KyadCK View Post

Quote:
Originally Posted by Uxorious View Post

Quote:
Originally Posted by cssorkinman View Post

Do you happen to know the batch and VID of your chip Uxorious?

Since I sent it back for the RMA, all I have is a picture I took of the chip...

AMD FX
FD8350FRW8KHK
FA 1237PGN
9H86032J20028
DIFFUSED IN GERMANY
MADE IN MALAYSIA
(C) 2011 AMD

1237, interesting... those with that batch were having good OCs in the 83** thread if I remember right. Maybe I'm thinking 1236?

So far i have worked with two 8350's from 1237 and both are running 4.8 24/7. one was able to hit 5 stable
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