Already tried it yesterday. I will try it again when I'm not busy with school. Doesn't work well with 5870. Today, smoke was coming out of my CPU fan, thought it died. I reapplied TX-2 and put a bigger blob in the middle. My temperatures doesn't let me overclock the 920 higher. The highest I've been able to run 3dmark06 was 4.4GHz. With HTT off, I ran with 4.5GHz, but my the score was 1k less. I hate that all the screenshots I've seen have voltages lower than mines. My core voltage at stock is 1.270v. But, my 920 seems to be running fine with temperatures over 100 and with a core voltage of 1.5v.
I am only 400 points away from 30k. If I was able to run 3dmark06 at 4.5ghz or overclock my GPU higher, I would had reached it. I am still waiting for XFX to send my the longer crossfire bridge dongle.