Yeah the one you linked to is what I have. Thanks for this advice, I'm grateful I'm finding this out before it dies on me. I have a couple more questions on how I should proceed.
1) If I were to get XFX to swap my card for another, even if it were the same model, is it possible that the new one would run cooler? Maybe my card runs hot?
2)I think getting the Accelero is a good idea. I think I could manage to put it on, but I don't know where the VRMs are. Are they raised cube-like things like on motherboards? Do you know of any links with pics or something to help me out with installing my own cooling? I'll search around.
Thanks a lot for the help!
1) It's not very likely, but there's a chance your card is overheating due to a faulty cooler. I would call XFX anyway and tell them your card overheats. If they send out a replacement that's identical and still overheats, you'll be left with getting an aftermarket cooler.
2) As far as VRM cooling goes, the below picture shows VRMs on the HD4870.
You need some decent heatsinks on those 5-6 elements (depending on your brand).
As far as installing 3rd party cooling, it's very easy imo. Just remove your old one (basically unscrew it), clean the chip and RAM and VRMs with acethone (or something similar that removes fat/grease), buy Arctic Silver AS5 thermal paste and use it on your GPU (just a small dip and distribute it evenly with a piece of paper or something). RAM heatsinks have their own glue-thingy so should stick fine (or use my VRM method below

). I had to perma-glue the VRM heatsinks though in my case, they just wouldn't stick. Used standard super glue. Worked like a charm.
You get instructions what steps to do with the cooling. Plenty of vids on youtube too.
EDIT:
There's a very nice article over at
Xbitlabs - basically all you need. It has both 3rd party coolers shown and an impressive VRM cooler. You can even see what I was using in this article, without the huge VRM heatsink though so my temps were worse. And this is for HD4890, so expect lower temps. I had the AC TwinTurbo. If you get the VRM cooling from this article, be sure to check if it will fit in your case
