One other thing you might want to know...
When you go to buy the resistors, you will notice that you have a choice of several different wattage ratings.
1/8w, 1/4, 1/2 and so on.
I built mine successfully using 75ohm, 1/4w, 2% tolerance resistors.
So, I know these work with my second 6870 card.
If you can't find these exactly, you might try a different ohm rating such as 68ohm or 100ohm...1/4 or 1/2w rated.
I have read that other people have had success with these combinations.
Tolerance does not seem to be a big factor in choosing a resistor for this purpose... but personally, I wouldn't go higher than 5% just to be safe.
Good luck and happy mining!
Thanks for the input, but I don't mind just attaching my HDMI in my screen and deplug it once its started