4870 Overclocking Thread

[Xcel]

Has anyone noticed whistling caps on their 4870? My Sapphire 4870 has been doing that since day 1.

Yes but very rarly, for instance only during the loading screen in Black and White 2 where it does 3000fps. Oh another place is when I scroll huge images in ACDsee, I have Sapphire as well.

Anybody here running the HD4870 on a 500W PSU? I want the 4870 but I'm not sure if my Antec EA500D 500W PSU is up to the task. I have 1 DVD-RW and 1 HDD, 4GB DDR2 800 RAM, E8400, and Antec 900 with the 4 stock fans.

Well my maximum power consumption from the wall is 330w, so at ~83% efficiency the PSU outputs 274w.

that's with

E6400 @ 3.2GHz 1.55vcore
2GB ram
2HDs, DVD
5 120mm fans
Audigy 2 ex
Corsair HX620