Overclocked my X2 7750BE and here are Everest results at three speeds

[desiibond]

Memory Read

2700 MHz**6097 MB/s
3000 MHz**6502 MB/s
3200 MHz**6863 MB/s
% increase: 12.6%

Memory Write

2700 MHz**4493 MB/s
3000 MHz**4638 MB/s
3200 MHz**4910 MB/s
% increase: 9%

Memory Copy

2700 MHz**7518 MB/s
3000 MHz**7846 MB/s
3200 MHz**8362 MB/s
% increase: 11.2%

Memory Latency

2700 MHz**68.9 ns
3000 MHz**65.5 ns
3200 MHz**62.0 ns
% increase: 10%

CPU Queen

2700 MHz**9963
3000 MHz**11035
3200 MHz**11769
% increase: 18.2%

CPU Photoworxx

2700 MHz**10160
3000 MHz**11272
3200 MHz**12004
% increase: 18.2%

CPU Zlib

2700 MHz**35932 KB/s
3000 MHz**39670 KB/s
3200 MHz**42289 KB/s
% increase: 17.7%

CPU AES

2700 MHz**9030
3000 MHz**9988
3200 MHz**10655
% increase: 18%

FPU Julia

2700 MHz**3295
3000 MHz**3648
3200 MHz**3887
% increase: 18%

FPU Mandel

2700 MHz**2362
3000 MHz**2603
3200 MHz**2778
% increase: 17.6%

FPU SinJulia

2700 MHz**1178
3000 MHz**1304
3200 MHz**1390
% increase: 18%


AMD ovedrive snapshot:

*img132.imageshack.us/img132/476/odafteroc.th.jpg

Am trying to push that to 3.3GHz.

If anyone pushed this processor beyond 3.3GHz on air cooling, please let me know the values that you set for processor and Northbridge.

 

[desiibond]

Temperature on running Everest stress test for CPU: max of 51 degree (for 30 minutes)

 

[MetalheadGautham]

Nice results, although nowhere close even to results of Intel E5200 OC.

So which cooling did you use ? (state name, type and price).

What was the measured TDP after OCing ?

Were you able to unlock the remaining cores ?

 

[desiibond]

^^True. Nowhere close to E5200.

Haven't used any aftermarket cooler yet.

I don't know how to measure TDP. Let me know if there is any s/w that shows TDP

Also, haven't tried to unlock the remaining cores. I think it works only with 790Chipset based motherboards from biostar and asrock.

 

[MetalheadGautham]

^^True. Nowhere close to E5200.

Haven't used any aftermarket cooler yet.

I don't know how to measure TDP. Let me know if there is any s/w that shows TDP

Also, haven't tried to unlock the remaining cores. I think it works only with 790Chipset based motherboards from biostar and asrock.

Wow, then the values are nice for stock cooling. 3.3GHz isn't good but it isn't bad either. (for an AMD K10 CPU)

How stable is it ? Are you able to game ?

For measuring the power dfference I guess you need to use a multimeter while running stress test on stock and after OC. I'm sure you can find a neighbour happy enough to lend you one.

 

[desiibond]

yep. Am able to play Crysis at that speed. Thinking of getting an aftermarket cooler soon and before that I have to ad few more fans to cool down HDD's. They are sometimes going to 48-49degrees.

 

[MetalheadGautham]

yep. Am able to play Crysis at that speed. Thinking of getting an aftermarket cooler soon and before that I have to ad few more fans to cool down HDD's. They are sometimes going to 48-49degrees.

HDDs shouldn't go that high. Are you sure you are keeping your HDDs far away from your motherboard ?

And don't try getting an aftermarket cooler. The 7750BE hits a wall at around 3.5Ghz to 3.9GHz even on air cooling.

Thats too little an increase to spend money on cooling.

 

[desiibond]

yes. that is what worries me. Actually, forget about 3.9GHz, it's very difficult to take it beyond 3.5GHz with aftermarket cooler.

Those HDD's are not near my mobo. When I put a fan near them, temp goes down to 41-42. Looks like they are pulling the heat from HD4770. Thinking of stacking them on top of DVD burner.

 

[MetalheadGautham]

yes. that is what worries me. Actually, forget about 3.9GHz, it's very difficult to take it beyond 3.5GHz with aftermarket cooler.

Then consider the case closed. You are lucky you even crossed 3GHz. Many people are stuck at that on stock. 3.3GHz means you are one among a hundred.

The funny part is that however the stock OC is, the upper limit remains firm.

Look at this and gasp.

*www.overclock.net/amd-cpus/451371-amd-athlon-x2-7750-oc-club.html

Those HDD's are not near my mobo. When I put a fan near them, temp goes down to 41-42. Looks like they are pulling the heat from HD4770. Thinking of stacking them on top of DVD burner.

You Sir, need an Interior Decorator's help

I suggest putting them on the opposite side of the DVD drive. But don't let your DVD drive feel the heat. That brings about its own issues.

A pic of your cabinet's inside will be helpful BTW.

 

[desiibond]

Oh wow. Thanks for the link. posted my score in the forum. I think mine will be in top 20

yes sir. I am really bad in cable management

Will post the picture today evening.

 

[desiibond]

found a quick solution. Removed the side panel and attached an 80mm HSF like this:

*img19.imageshack.us/img19/6683/picture005veo.th.jpg



temp went down to 39.

 

[popularbhaskar]

Overclock issue with a 570 chipset - AMD 7750 BE

I ended up buying my 7750 Black Edition

My current mother board is Gigabyte M57SLI-S4 which has a Nvidia 570 chipset.

I have installed the same in my mobo and have 2 issues which i am not sure how to proceed further.

Only Stock Speed:

1. I am unable to overclock a bit also. (ie) even if i change the multiplier to 13/12 or even 11 or 7 also it does not pass the post screen. It goes blank at the part when its supposed to display the OS choice. (ie it goes on a hung mode after the post screen and have to do a hard shutdown as a reset would also show up nothing on screen) If i modify Vcore voltage / bus speed the same happens.

Unganged (good/bad?)

2. Memory is showing up as Unganged and it used to be 128 bit with my old proc (AMD 4400+) and it changed to 64 bit which i was able to replicate in my old processor by running the same on 1 stick. So is this normal?

I have 2*1 GB transcend value ram. Is this the bad boy causing the pain?


A virtual Motor? (did i get a evil stock cooler?)
3. The noise of the fan is very loud compared to my AMD 4400+ which was loud. Is this normal?

Also:
1. Should i try to reinstall the OS after i overclock ? I will try this anyways.
2. Does overclocking work on my motherboard or should i learn to live with stock speed.

Kindly help.. I am kind of stuck.

-popularbhaskar

 

[desiibond]

try to increase the processor speed and at the same time down clock your memory frequency so that it stays below 800MHz.

 

[popularbhaskar]

any idea how to achieve this desibond...

 

[popularbhaskar]

I have also posted the same in a new thread to work seperately on this.

 

[desiibond]

go to MB Intelligent Tweaker

and try these settings:

1) HT Frequency: 190MHz
2) CPU Multiplier: 17 and if it fails, set it to 16.5 and if needed, set it to 16.

Let me know how it goes.

 

[popularbhaskar]

hi desibond,
I only have option to choose CPU frequency.. but i dont have any value less than 200 there. I have Auto,200,205,210 etc...
Only option i have related to HT is HT voltage.
The CPU multiplier irrespective of whatever i set ends up in no loading my OS and not even listing my OS boot options/and it does not even the boot from DVD. On selecting 17 as CPU multiplier i had no POST situation. I had to do clear the CMOS to be able to have display up.
Thanks for all your help btw... Sad that i am stuck at stock speed.

-popularbhaskar

 

[desiibond]

while in BIOS main screen, press Ctrl+F1 and then check if any more options have come up.

 

[MetalheadGautham]

found a quick solution. Removed the side panel and attached an 80mm HSF like this:

*img19.imageshack.us/img19/6683/picture005veo.th.jpg



temp went down to 39.

Smart move.

Now how will you prevent dust and insects from entering your case ?

I suggest getting a hacksaw blade and cutting out an opening for the fan.

 

[desiibond]

it's just temporary setup. There is room to put a 220mm fan on the side panel. Will be getting one this weekend