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1090t keeps getting stuck at a x4 multiplier

post #1 of 8
Thread Starter 
Like the title says , My 1090t when left for like 15 minutes will idle down to a x4 multiplier and stick there and give horrible performance. This is with cool and quite disabled and c1e disabled aswell. My specs are 1090t oc at 3.8 with aftermarket silenx aircooler, msi 990fxa gd65 mobo, xfx radeon hd 7970 core edition flashed with a ghz bios , corsair hx850 silver psu and 8 gb corsair ram rated for 1600. Restarting the computer fixes the problem temporarly. Seems like when its left alone for too long it idles down and wont throttle back up to full speed. Ive also read some people have fixed this by going back to an older bios for the mobo. I need some suggestions
post #2 of 8
Does it -only- occur when it's left alone? Or does it end up this way if you say, run Prime95 or similar? Strange that it would be throttling at idle with the power saving stuff disabled.

Is the Windows power plan set to High Performance? Also, seconded for trying an earlier BIOS revision to see if it stops doing this.
    
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post #3 of 8
set your power settibngs in windows to full performance, mine did that b4 too
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post #4 of 8
Thread Starter 
I know this is old im still having this problem no matter what settings. heres a picture of core temp when the problem is happening the temp is registering at 255c for all cores. So what im wondering where is the damage the motherboard or cpu? http://smg.beta.photobucket.com/user/lowki/media/255c_zpse2f3fb3f.jpg.html?sort=3&o=0#/user/lowki/media/255c_zpse2f3fb3f.jpg.html?sort=3&o=0&_suid=135567882693802918246939978185
post #5 of 8
Disable core unlocking in your motherboard BIOS, that can interfere with temperature readings (and shouldn't affect any overclocking). Are you doing ANY overclocking at all though? You said overclocked to 3.8Ghz... Here's what I recommend you do.

Reset your motherboard BIOS via the jumpers to completely clear settings/any errors it may getting. I mean it, jumpers only, don't do it via the BIOS screen, the jumpers will always wipe it clean. Boot into Windows with your default settings and see whats going on (do not interfere/change any settings in the BIOS yet). You need to diagnose this problem without any overclock/BIOS changes to see if this is something serious first. If everything seems OK, then this sounds like an overclocking/stability issue.

If that's the case, start from square one and redo your overclocking. You said your core multiplier is throttling, do you have it set to AUTO? If you do, you need to set this to the highest value possible (should be 13.5 or so for a locked AMD multiplier). If you leave this to auto, your PC will not keep it at the highest setting. Motherboards/Hardware/Windows and a combination of all three dislike overlcocking... even if they are built for it, they will resort to lower numbers whenever they can,. You need to set that number to manual.

Get things going back to your 3.8Ghz and then Prime 95 test for several hours. Honestly I don't think updating/reverting your BIOS to newer/older versions will work. Your rig probably wouldn't even run if there was a compatibility issue there. Try what I recommended and see if it works. thumb.gif
post #6 of 8
Hi,
try getting k10stat its very simple program for AMD CPUs.

Start it and set all u re states same as p0 u have p0 p1 p2etc.
See if that will help (setting all power states to power state of maximum performance(full load) cpu). After u set it like that see if it lowers multi when it idles.


Here is a pic (This picture is just example u will have different values)



As u can see in pic point it to have all p-states same as p0 (so just copy whatever u got under state p0 to other p-states)

Let us know if this helps.
Edited by zvrk22 - 12/17/12 at 2:31pm
post #7 of 8
Thread Starter 
Thanks for all the replies. I reset the cmos with the button on the back of the motherboard i have a msi 990fx gd 65. I still have the issue with everything set at factory settings. Im starting to think whatever reads the teperature is faulty. Everytime this happens the temperature is reading at 255c there must be some kind of protection that idles all the cores incase of high heat. What im really wondering is it the cpu or motherboard im leaning towards the motherboard. I just want it to work properly im tired of constantly having to restart my comp to get the cpu back to good speeds.
post #8 of 8
Hi, don't know if you're still having this issue or not. I've run into an issue which maybe similar with my 1090t while overclocking.

I have a doubt that it could be something completely different tho as were running completely difference mobos.

I found that on my board Asus M5A97 Pro, was throttling the CPU Multi down to x 4 because my VRMs were getting to hot. I was playing around trying to get 4.1GHz + with
3200 NB and had all the extra VRM settings on. After reading some info about my Mobo from various OC.net threads I found that it has built in protection and also that a few of
the features I had set advise active cooling tongue.gif

I don't know what kind of options you get on your board, but just thought it could be something to consider if still experiencing issues.
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