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How to Set/Verify 3870X2 overclock - Page 2

post #11 of 20
Excellent guide Grunion! One of my cores was at 300 before fixing it with this method! The other one was at 775MHz, so I set them both to 775MHz and verified the speeds in the thermal sensors tab as well as RivaTuner.

However, I'm having a problem.

My setup is a pair of these HD3870's on a Gigabyte X38 DQ6 (DDR2 version).

I used RivaTuner to manually set the fan speeds at 80%. One was at 76% before the bump, the other down at 25% before the bump. I heard an audible increase in fan speed when moving the one previously at 25% to 80% (though they're still both muffled by the Antec Nine Hundred fans on high haha). Using RivaTuner's monitor, it now says both cores are around 770MHz, but here's the problem: One card reports temperatures of about 45*C, the other reports temperatures of about 62*C. Any idea what is causing this?

I think the problem might have to do with only one card being used. The one at 45*C reports 0.00 in percent being used. The other one fluctuates between 0.00 and 0.72, or about 0-1% use. I find it hard to believe that only 1% use would cause such a large change in temperature though. In CCC, the Enable CrossFireX box is checked. Any help is appreciated.

Card One: http://img388.imageshack.us/img388/772/card2fg2.jpg
Card Two: http://img388.imageshack.us/img388/3530/card1ae6.jpg
CCC and Device Manager: http://img388.imageshack.us/img388/7743/cccanddmzs3.jpg

EDIT: Just ran 3DMark06 and scored a 15,800 if that helps. Specs: Q6600 G0 @ 3.6GHz, 4x1GB OCZ Flex @ DDR2 1066 5-5-5-15-2T, Gigabyte X38 DQ6 (DDR2 version), Two HD3870's.
Edited by durch - 5/24/08 at 11:00am
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post #12 of 20
Thread Starter 
Quote:
Originally Posted by durch View Post
Excellent guide Grunion! One of my cores was at 300 before fixing it with this method! The other one was at 775MHz, so I set them both to 775MHz and verified the speeds in the thermal sensors tab as well as RivaTuner.

However, I'm having a problem.

My setup is a pair of these HD3870's on a Gigabyte X38 DQ6 (DDR2 version).

I used RivaTuner to manually set the fan speeds at 80%. One was at 76% before the bump, the other down at 25% before the bump. I heard an audible increase in fan speed when moving the one previously at 25% to 80% (though they're still both muffled by the Antec Nine Hundred fans on high haha). Using RivaTuner's monitor, it now says both cores are around 770MHz, but here's the problem: One card reports temperatures of about 45*C, the other reports temperatures of about 62*C. Any idea what is causing this?

I think the problem might have to do with only one card being used. The one at 45*C reports 0.00 in percent being used. The other one fluctuates between 0.00 and 0.72, or about 0-1% use. I find it hard to believe that only 1% use would cause such a large change in temperature though. In CCC, the Enable CrossFireX box is checked. Any help is appreciated.

Card One: http://img388.imageshack.us/img388/772/card2fg2.jpg
Card Two: http://img388.imageshack.us/img388/3530/card1ae6.jpg
CCC and Device Manager: http://img388.imageshack.us/img388/7743/cccanddmzs3.jpg

EDIT: Just ran 3DMark06 and scored a 15,800 if that helps. Specs: Q6600 G0 @ 3.6GHz, 4x1GB OCZ Flex @ DDR2 1066 5-5-5-15-2T, Gigabyte X38 DQ6 (DDR2 version), Two HD3870's.
Your score alone indicates that CF is working
I take it you're using the 8.5 cats?
Same thing happened to me, 2 cores don't budge in the RT graph.
Performance says otherwise.
The temperature difference is normal with CF/SLI set ups.
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post #13 of 20
Hello, first time post on this forums!

I have a EAH3870x2 and I have manged to set my speeds higher and gain control of the fan. But it seems after every restart the OCed speeds reset to default. Is this normal? Do I have to reset it after every time I reload my computer?

Thanks!
post #14 of 20
Hi there...finally a guide i can follow and understand when OC the 3870 X2!!!
in fact..there are no other guides!...none i have found

followed the instructions to a T...
GPUZ - AMD Tool - Riva (new OC speeds visible)
CCS - 225.14 FPS (NO OC)
CCS - 224.47 FPS (With OC

i take it thats not supposed to happen...
Running XP Pro SP3 with 8.5...(tried 3 times on frsh install of windows)
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post #15 of 20
Quote:
Originally Posted by Mrc6889 View Post
Hello, first time post on this forums!

I have a EAH3870x2 and I have manged to set my speeds higher and gain control of the fan. But it seems after every restart the OCed speeds reset to default. Is this normal? Do I have to reset it after every time I reload my computer?

Thanks!
hey are you using smart doctor? if yes....then.....right click on smart doctor icon and select settings, use clock setting after next reboot........

Also.....will this guide apply to QuadFire?
    
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post #16 of 20
Quote:
Originally Posted by Vlasov_581 View Post
hey are you using smart doctor? if yes....then.....right click on smart doctor icon and select settings, use clock setting after next reboot........

Also.....will this guide apply to QuadFire?
Yes it works the same way, you just do it an extra couple of times
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post #17 of 20
Alright man here's my issue, I can get this thing clocked no prob, my issue is when I system reset so do my clocks. I read a post above and they mentiond somthing about a program called smart doctor ? Is there a way that I can set them up to auto clock when windows starts like the fan setting on rivia tuner ? Thanks for the info !
     
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post #18 of 20
hey how do you flash a new bios on a 3870x2?
    
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post #19 of 20
Quote:
Originally Posted by zlojack View Post
Hey Grunion, did you flash your bios to have low power and high power 3D clocks the same?

hey zlojack... how do you flash a new bios on a 3870x2?
    
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post #20 of 20
With ATI Flash.

See here
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