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AMD x4 955 BE to OC to what limit?

post #1 of 17
Thread Starter 
Dear all,

New here. but highly tempted to try out OC on this.
Don't really have much experience in OC but used to do simple OC via mobo bios of 15%+ on my intel E5400. (Yes! Asus makes life very simple...gotta give them a thumbs up for it.)

Also, CPU-Z doesn't detect my chip as black edition..but when i bought it the box and etc is BLACK edition...did i get conned?

Some info of my current setup as seen in pics.

1 Question, is the stock HSF of AMD chips really very loud? (I thought something was spoilt when i 1st used it...the RPM is like 6000++ ???)

CPU used to cooled by Hyper 101 (1fan - Idle/load temp at 45-51deg/ 52-60deg) then i upgraded it to Hyper 212+ (2fans - Idle/load temp at 31-34deg / 41-43deg) <--- Massive improvement


Originally by AMD overdrive, my multiplier slider is stuck at 16x and it seems I have to go to bios to set a paramter to -2% and upon restart, i can push the slider >16x

Questions
1. If i were to push it to 4ghz, will the idle state still be at 800mhz? (4x) If it's 100% at 4gHz, then my electrical bill is gonna burn...

2. Have a 480w PSU, running only CPU + MOBO + 1 RAM (4gb) + 1 HDD + 1 graphic 5770. Sufficient?

3. Ram is normal kingston ram and not high end OC type from COSAIR, can i still OC?



    
CPUMotherboardGraphicsRAM
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post #2 of 17
Eh.... I don't see how OC-ing a 125W 955 can be a good idea whatsoever on that Biostar A880G+ board (3+1 power phase), especially on that 480W PSU you are running (a potentially low quality PSU just adds to the problem)
post #3 of 17
If you had a good board and PSU....4ghz+ should not be a problem
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post #4 of 17
I don't recommend pushing it further, although MOSFET heatsinks may help.
The White Wolf
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post #5 of 17
Quote:
Originally Posted by xd_1771 View Post
Eh.... I don't see how OC-ing a 125W 955 can be a good idea whatsoever on that Biostar A880G+ board (3+1 power phase), especially on that 480W PSU you are running (a potentially low quality PSU just adds to the problem)
You could save yourself a lot a money buying replacement parts by listening to this.

Get a new mobo and PSU and then overclock.
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post #6 of 17
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
Eh.... I don't see how OC-ing a 125W 955 can be a good idea whatsoever on that Biostar A880G+ board (3+1 power phase), especially on that 480W PSU you are running (a potentially low quality PSU just adds to the problem)

Can you advise how does the PSU calculation come in ?
I played around on the cooler master website based on my current setup and they originally recommended about 320-330W based on the configuration of my current setup.

I'm at 480W, it's still insufficient? Or the brand of the psu is lousy?
    
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post #7 of 17
Thread Starter 
Quote:
Originally Posted by amd-dude View Post
If you had a good board and PSU....4ghz+ should not be a problem
Mobo - yeah i understand, cos i chose cheapest that time (budget tight)

PSU - is it insufficient or is it lousy brand?
    
CPUMotherboardGraphicsRAM
AMD Phenom II x4 955 BE Biostar 880G+ 5770 4gB Kingston 
Hard DriveOSPowerCase
Samsung Window 7 32bit Andyson 480G Cooler Master Elite 335 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD Phenom II x4 955 BE Biostar 880G+ 5770 4gB Kingston 
Hard DriveOSPowerCase
Samsung Window 7 32bit Andyson 480G Cooler Master Elite 335 
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post #8 of 17
Im using that same board, because of budget as well. So far it seems to be stable at 4.1ghz...we'll see how long this board lasts though lol. I'm using this thing for a lot of video transcoding.
post #9 of 17
Well, board isn't the problem, just install some fan 120mm (quiet one) to cool MOSFETS and you will be fine.

PSU on the other hand, well 480W is good enough if that would be some good brand with high efficiency lets say 80% i hardly doubt that yourse can manage 75% so it can be a problem.

Keep in mind that overclocking CPU (higher Vcore) increase W need dramatically.
post #10 of 17
I think you should stay where your at, untill you upgrade some supporting hardware. As for your CPU downclocking at idle, that is cool n quiet working. It will still work with an OC but there is a catch. If you bump the multi up to high it will stop working(I think its at 18x...not positive though). the workaround is to OC though bus speed. There are also 3rd party programs that allow you to tweak the Cool N Quiet profile, but thats out of my know how. I've seen lots of 955 BE's( including my C3 955BE) that hit a wall in the area of 3.8-3.9Ghz...It sucks lol but happends.
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Gizmoto
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They beat me:(
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