HD 6990 Preview/Review

[Lanek]

have you noticed any "coil whine" or electrical noise from the card? I noticed noticed it on every AMD card since since my 2900 (up to 6950's) and I was just wondering if you have noticed it as many others have...

Normally this not happend on normal condition with AMD cards ( only highly OC ), but it's good you point it, as many reviewers have tell got it when test the 6990... i m curious to get users infos on it. Cause this can be totally annoying.

Lol the first time i have push my 5870 after 1100mhz, i was really affraid of this sound coming during 2K3 first and second test ( like a 56K modem sound x100 ), at the point i was ask me if i will not cut the power of the pc...
But as back in time my old x1950XTX CFX highly OC was produce the same sound....

Volterra PWM look really sensible of it... ( i have test 8 different PSU's for a shop's friend, and strangely, this coil whine appears/disappears/increase/decrease depending the PSU used ( look like multi rails PSU increase it, when with a single 12v rails results are better )