AMD HD 3870 x2 Overclocking Guide
Are you Fed up with :banana::banana::banana::banana::banana: clocks in CCC?
FYI. you do not need 8 pin psu dongle to overclock. two 6 pin dongles will work.
1. If you want to run fan at 100% download and install riva tuner 2.06 and do the following:
x:\Program Files\Rivatuner 2.06\rivatuner.cfg
Comparing files rivatuner_2.06.cfg and RIVATUNER_2.06_8800GTS_G92_3870X2_RV670.CFG
***** rivatuner_2.06.cfg
G86 = 420h-42Fh
G92 = 610h-61Fh
***** RIVATUNER_2.06_8800GTS_G92_3870X2_RV670.CFG
G86 = 420h-42Fh
G92 = 600h-60Fh,610h-61Fh
*****
***** rivatuner_2.06.cfg
RV630 = 9588h-9589h
RV670 = 9500h-9501h,9505h,9507h
***** RIVATUNER_2.06_8800GTS_G92_3870X2_RV670.CFG
RV630 = 9588h-9589h
RV670 = 9500h-9501h,9505h,9507h,950Fh
*****
edit your rivatuner.cfg so it looks like the bottom entry, the important line is the rv670 one for you. Open notepad as Run as Administrator, open the rivatuner.cfg in x:\Program Files\Rivatuner 2.06, edit the RV670 line so it looks like this:
RV670 = 9500h-9501h,9505h,9507h,950Fh
save it close and restart riva tuner
2. Download amd gpu clock tool here: http://www.nordichardware.com/skrive...kTool_v0.7.zip
You will need to apply this patch to the root in AMD gpu tool before running the program. here: http://www.nordichardware.com/skrive...16/ToolLib.zip
2. run AMD GPU clocktool, see on device - BN:3, DN:0 = GPU1 and BN:4, DN:0 = GPU2... BN:3, DN:0 = GPU1
BN:3, DN:0 = GPU1 will show default clocks(825/900)
3. select Bn4 core and type in your gpu and mem clocks and hit apply. then select the second Bn3 and do the same.
Check your clocks by opening the thermal sensor tab and hit start. it will show current clocks for both gpu's and mem
4. next try to max out each core ad mem by overclocking one slighty higher than the other core and running a benchmark like 3dmark 2006. if it fails then you will know which each core maxes out so you can get the optimal performance from the card. Do the same for the memory.
Thanks to ZoLKoRn, Sampsa and T_M for their feedback.
