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9850 OverClock Tests - Page 15

post #141 of 158
Interesting reading, guys. Seems like you all had some ups and downs - especially with the Phenom.

For what its worth; I've spent hundreds of hours researching this new architecture to see how best to overclock it. One thing I did find is this and it's a pretty interesting read:

http://www.ocia.net/articles/k10overclock/page1.shtml

When the B3 stepping was released I bought a couple of new machines for the office based on the Phenom 9550 on Gigabyte mobos. Eitherway, I decided to have a go at overclocking this piece of kit and it was an interesting, if not, extemely rocky ride.

If anyone is remotely interested I'll do war and peace in another post, but for now I can say I gave up trying to do the overclocking through the BIOS and instead used AMD's Overdrive tool. Why? Well, reading through tons of articles it became clear that producing 4 cores on the same die that would all run at the same speed was incredibly difficult and just about close to a miracle. I then found a guy that used Overdrive and overclocked all four cores at their individual maximum speeds.

The result I got was great for a 9550 @ 2.2GHz stock:

http://valid.x86-secret.com/show_oc.php?id=373899

(Cores 0, 2 and 3 are running at 2.8GHz while core 1 - the weakest link - is only running at 2.55GHz) HT Link is running about stock for this chip at 1.79GHz and the CPU freq: 253MHz which has helped to get the PC6400 800MHz DDR2 to 1021MHz. To help get it rock solid stable I had to reduce the HT Link multiplier (x7) to keep it from going too far over stck and certainly not faster than the North Bridge freq.

Because all four cores are not running at the same speed I believe this is why CPU-Z wouldn't validate the results and I've heard they're not working on the tri-core AMD CPUs either, but who cares.... I've got the screen shots from Overdrive with all the settings available and I'm happy.
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post #142 of 158
Thread Starter 
I heard of this before ,overclocking each cpu different. I have done some reading and asking around about the results.
The problem I have with this is the voltage . You can't set different voltages for the CPUs. So what you would have would be a couple of CPUs running at a good speed and a couple at not so hot speed but all at the same voltage which would produce a lot of heat and maybe is some cases a magnetic field which i don't think would be good for the little bitty switches.
explain my case if you have an old CPU clock it at default and up the voltage to what you need to max overclock and come back in a week and tell me what happens.
I can tell you that it will create hot spots on die and for no reasons at all it will shut down every now an then , eventually it will cave. it will pruduce way to much heat and will lock up to the point a restart will not help.
Edited by ZigZagFreeBurning - 7/17/08 at 12:18pm
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post #143 of 158
Quote:
Originally Posted by whe3ls View Post
it prolly because your OP makes little to no sense and its hard to understand
...Cocaine is a hell of a drug.... CPU multi 13x all 4 cores, FSB 218 MHz = 2.83 GHz STABLE, MEM Voltage 2.05, HT Multiplier 13x TCLK x 2... I cannot seem to get anymore out of this rig... NB 2,108 MHz... I'll get a screenshot from AOD.... GL Oclockers....
Edited by Showtime219 - 7/24/08 at 5:41pm
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post #144 of 158
Thread Starter 
Asus has put out a board with the 790 fx and 750 sb combo and i heard rumors that it will hit the 3.4 ghz mark with the proper cooling of course.
this board is called the M3A79-T Deluxe and it is the only board so far with the 790fx and the 750sb together any more info on this board would be grate , really thinking of getting one
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post #145 of 158
Here is mine, I have a M3A32-MVP Deluxe Wifi Phenom 9850BE@3.6
http://valid.x86-secret.com/show_oc.php?id=425063



Edited by HondaGuy - 10/4/08 at 7:12am
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post #146 of 158
Im thinking of getting that 790FX SB750 board also. Im really anxious to hear the reports on its OC performance.
post #147 of 158
Thread Starter 
Quote:
Originally Posted by HondaGuy View Post
Here is mine, I have a M3A32-MVP Deluxe Wifi Phenom 9850BE@3.6
http://valid.x86-secret.com/show_oc.php?id=425063


And this is stable , you have a 600 south bridge are you liqued cool and what voltage .I can get mine to 3.2 but crashes with in an hour but i never went over 1.5 cpu voltage though . i running top air cooling with a 900 antec case
you must be liqued
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post #148 of 158
Thread Starter 
sorry i didn't read you are water ya water on a 750sb you should get close to the 4ghz mark you would thin all depends on what ACC does
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post #149 of 158
Thread Starter 
Quote:
Originally Posted by Zatarra09 View Post
Im thinking of getting that 790FX SB750 board also. Im really anxious to hear the reports on its OC performance.
Tomshardware did some test with the gx board and they got 3.2 stable on stock cooler with the gx chipset and it is a lower grade then the 790 fx but asus is the only one that combined the 790fx and the 750sb so far .the gx boards will do 8x by 8x in crossfire compaired to 16x by 16x on the 790fx
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post #150 of 158
foxconn also has a 790FX + SB750 board, just about 40$ more then Asus
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