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Why does my CPU Multiplier Keep going down?

post #1 of 36
Thread Starter 
So i overclocked my AMD Phenom II X6 1090T BE to 4.0GHz, I'm still trying to get to run Prime95 for at least 12 hours. But for some reason now EVERYTIME the temperature reaches 48C exactly it will change my Multiplier from x20 to x4... making it go at 800MHz untill the temp is 35C. I have everything I should have disabled/enabled and I'm OCing in the BIOS. Here's my OC specs:

(Using ASUS M4A87TD EVO Motherboard)
4.01GHz
Multiplier: x20
FSB: 200MHz
DRAM Freq: 1600MHz
NB: Auto
HT: Auto
Turbo: Disabled
CPU Voltage: 1.43v (runs at ~1.45v with Prime95)
CPU/NB: Auto (1.15v)
NB: Auto
HT: Auto
DRAM Voltage: 1.65v
CPU/PCIE LLC: Enabled
CPU/PCIE Spread Spectrum: Disabled
CoolnQuiet: Disabled
C1E: Disabled

I don't know why it's doing this... could it be because I used AMD Overdrive tool once (just to see what it looks like and stuff)?
post #2 of 36
MOSFETs are overheating probably.



Those little black cubes above the processor socket are MOSFETs. Try cooling them with a little fan and see if the throttling stops.
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post #3 of 36
Definetly check your MOSFET temps. Your OCing a HexCore on uncooled mosfets.
    
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post #4 of 36
Disable Cool N' Quiet in the BIOS.
post #5 of 36
Seems like you might have cool and quiet enable in your bios
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post #6 of 36
Ninja edit, cuz I just saw some guy say overheating MOSFETS wouldnt throttle a CPU. Poorr him

Guys read the OP, 2nd to last line says CnQ is disabled.
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post #7 of 36
Quote:
Originally Posted by hermitmaster View Post
Disable Cool N' Quiet in the BIOS.
Quote:
Originally Posted by Bull View Post
Seems like you might have cool and quiet enable in your bios
He said he's disabled it. Read his post.
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post #8 of 36
Thread Starter 
Quote:
Originally Posted by doritos93 View Post
MOSFETs are overheating probably.



Those little black cubes above the processor socket are MOSFETs. Try cooling them with a little fan and see if the throttling stops.
It's getting PLENTY of cooling I can tell you that. I got the Antec 900 II Case with all the fans running at high. Plus I got a Corsair H50 Liquid Cooling Heatsink. That's why I highly doubt it's heating problem... But do you have any other ideas?
post #9 of 36
It probably is from using AMD Overdrive. I loaded it once on my 4.0Ghz overclock and it did the same thing. I removed it, ran driver sweeper and set my power options to High Performance. fixed my problems
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post #10 of 36
Quote:
Originally Posted by IAreKyleW00t View Post
It's getting PLENTY of cooling I can tell you that. I got the Antec 900 II Case with all the fans running at high. Plus I got a Corsair H50 Liquid Cooling Heatsink. That's why I highly doubt it's heating problem... But do you have any other ideas?
Dude, do you have cooling right on the MOSFETs? If not, they aren't getting cooled. Case fans or a H50 don't cool that area as much as it needs to be cooled for overclocking and Prime runs.
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