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AMD 8150 Throttling issue with ASUS M5A88-M - Page 3

post #21 of 28
Thread Starter 
I've made a lot of progress. Even though I am running right now from a cold boot after I did some modifications, I am running at stock speed, all 8 cores, with no throttling so far (knocks on wood). I've got a 120mm usb fan blowing over the VRMs, an extra 80mm blowing on top of the otherside of the motherboard, and turned my rear 80mms around so the blow in also towards the VRMs inside of sucking out. I really don't need any outward blows because I've got 2 huge vents in the roof, one stock and one to run my H100 lines out of.

It looks awful, however, it's an HTPC, therefore in a cabinet. smile.gif It's a tough cookie to crack...

Oh, and all of this is with the H100 on the lowest speed.


Edit: Spoke too soon, son of a.... but I went quite some time before throttling kicked in. As core approached 44 and "Cpu temp" approaches 56 it started. How much does "CPU temp" in AOD actually matter if cores are in check?

edit 2: It is dropping voltage and speed but not nearly as much or for as long previously. I'll continue to look. Next step would be maybe some heatsinks
Edited by slopokdave - 8/25/12 at 9:40pm
post #22 of 28
The 8150 is a real power-hog. 125W BDs work best on an 8+2 phase board mad.gif
Kukumonster
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A pleasant surprise :)
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Kukumonster
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A pleasant surprise :)
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post #23 of 28
Your mobo isn't handling the chip. That's why it's best and safe to go in for a 140TDP board with an 8+2 phase design. Pushing the limits of your chip on that board won't get you anywhere. Do away with the board if you want to get the max out of that chip.
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Jay
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post #24 of 28
Quote:
Originally Posted by PunkX 1 View Post

The 8150 is a real power-hog. 125W BDs work best on an 8+2 phase board mad.gif
Summarized well.
A good board with a capacious VRM system should be a necessity for the most power hungry AMD chip ever. I usually recommend a larger than 4+1 phase system for FX 8 cores for most reliable operation. Cooling would also be an essential.
Edited by xd_1771 - 8/26/12 at 12:48am
post #25 of 28
Thread Starter 
With the help of all of you that is what I see now as well. Thanks so much.

So do I have any other mATX options or do I have to move up to ATX?
post #26 of 28
Quote:
Originally Posted by slopokdave View Post

With the help of all of you that is what I see now as well. Thanks so much.
So do I have any other mATX options or do I have to move up to ATX?

There's no AMD-based mATX that would be effective at handling an 8150 properly.

ATX it is biggrin.gif
Kukumonster
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A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
Amd Athlon II X3 435
CPUMotherboardGraphicsRAM
Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
Kingston HyperX Fury 240GB  WD Blue 1TB Seagate Barracuda 500GB Noctua NH-C14S 
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Cooler Master USP100 Black Edition 
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Kukumonster
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A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
Amd Athlon II X3 435
CPUMotherboardGraphicsRAM
Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
Kingston HyperX Fury 240GB  WD Blue 1TB Seagate Barracuda 500GB Noctua NH-C14S 
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post #27 of 28

I listed this in the VRM issues/incidents database under the "miscellaneous non-failures" tab. I didn't think that this board actually wouldn't be able to handle an 8150 at stock with cooling but it looks so like there is a capacity issue.  Everything has been confirmed - it takes longer for throttling to begin if you cool the VRMs and lower the CPU speed, and there is no throttling at all when you run just 4/8 cores.

post #28 of 28
Thread Starter 
Quote:
Originally Posted by PunkX 1 View Post

There's no AMD-based mATX that would be effective at handling an 8150 properly.
ATX it is biggrin.gif

Thanks for confirming!
Quote:
Originally Posted by xd_1771 View Post

I listed this in the VRM issues/incidents database under the "miscellaneous non-failures" tab. I didn't think that this board actually wouldn't be able to handle an 8150 at stock with cooling but it looks so like there is a capacity issue.  Everything has been confirmed - it takes longer for throttling to begin if you cool the VRMs and lower the CPU speed, and there is no throttling at all when you run just 4/8 cores.

Thank you! I would totally agree. I've added more cooling to the motherboard, everything I could do aside from add the heatsinks, and I am getting more and more throttled. Last night it looked better but it was too early to call. Unfortuantley for me it means I'm going to go over to an Intel i7-3770k. That will cost me $340 for the cpu and $200 for the mobo (asus Maximus V mATX). It would cost me $189, plus $130 for a new case (Silverstone GD07), plus $150-$200 for an ATX motherboard. The AMD route would still be cheaper but not by enough; thats the point of the bulldozer, the cost savings for the performance! If I had a case that worked it would be totally different.
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