I would go single 4890 instead of CF 4770. Not all games supports CF. Go straight for 4890 since the price difference with 4870 1GB is so little. You get at least 10% more performance. Hopefully 4890 has quieter heatsinks by the time you buy it.

This post has been edited by TristanX: May 19 2009, 12:16 AM

My 4890 is only loud on hot weather but of course I'm using CM690 casing with almost all high performance fans installed plus I glued 12cm 90CFM blowing at my 4890. My PC is sitting next to window too.

This post has been edited by TristanX: May 19 2009, 12:20 AM

Shouldn't be noisy with air cond. My 4890 is completely silent while gaming when I turn air cond on.

Like I said, the price difference is so little. Might as well get a 4890 instead. You will be using a good casing plus air cond if necessary too.

52C idle, 64C load for my casing using auto fan speed. 5-10C more on hot weather.