How to Set/Verify 3870X2 overclock - Overclock.net

**grunion** · 05-05-08

There have been alot of inquiries about this matter as of late.
Very simple process, if your clocks still do not reflect the set clock speeds after this verification method..I don't know what to tell you.
I've shown the Clock tool and RT method of clock speed verification.

I can confirm that this works in XP/Vista 32bit, if it doesn't work, then you have a bad driver install, bad card, or are a total n00b

You will need the AMD gpu clock tool patch, get it here.

Note*Since the release of Cat 8.4, clocking both cores from within CCC is possible.

T4BOO* · 05-06-08

Great guide..one problem..whenever i increase the clock on the 2nd gpu, i get a bsod and have to manually resart

Munchkinpuncher · 05-06-08

Great guide!

T4BOO* · 05-06-08

ok..i decided to u ccc to do my ocing. The attached images are the results. The only problem i am seeing is that under ATI Radeon HD 3870x2 / Default Monitor, the core clock is 297..ive got no idea wats goin on

**grunion** · 05-06-08

Quote:

Originally Posted by T4BOO*

ok..i decided to u ccc to do my ocing. The attached images are the results. The only problem i am seeing is that under ATI Radeon HD 3870x2 / Default Monitor, the core clock is 297..ive got no idea wats goin on

4 cores, IDK must be an XP thing.

As for the 297mhz, that's low power mode and should kick into 3d mode when gaming.
Watch the graph for the second core while you test the clocks, make sure you apply the settings.

Also monitor the core in question while gaming, should increase to 3d speeds.

zlojack · 05-06-08

Hey Grunion, did you flash your bios to have low power and high power 3D clocks the same?

**grunion** · 05-07-08

Quote:

Originally Posted by zlojack

Hey Grunion, did you flash your bios to have low power and high power 3D clocks the same?

Nope, why?

Steele84 · 05-07-08

Awesome guide man, I will put this to good use when my new motherboard gets here ! +rep

zlojack · 05-07-08

Quote:

Originally Posted by grunion

Nope, why?

Just curious.

I did flash my first card because there were some issues with powerplay dropping to low power 3D clocks while gaming, which absolutely killed FPS.

I didn't on my second card so the two actually had two (or really FOUR!) different bios files.

Last night I flashed everything back to stock, since the powerplay issue has supposedly been resolved in the new drivers.

T4BOO* · 05-07-08

Quote:

Originally Posted by grunion

4 cores, IDK must be an XP thing.

As for the 297mhz, that's low power mode and should kick into 3d mode when gaming.
Watch the graph for the second core while you test the clocks, make sure you apply the settings.

Also monitor the core in question while gaming, should increase to 3d speeds.

Thanks for the info Grunion, just checked it out and yes the clicks increased while gaming, but in wont allow me to oc it using riva. I guess il just use ccc to co, and rivatuner to monitor..tnx again for your help

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How to Set/Verify 3870X2 overclock

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