High Pitched noise only while in game RX 480

Robert-

Reputable
Jun 20, 2015
55
0
4,640
Have had the 480 about 20 days and I only noticed today, the fact I only noticed it might be because I always play with a headset but could also be that I overclocked it further yesterday. I've had it at 1335mhz from 1305 since I got it and last night I changed it to 1355mhz. I also undervolted it lastnight. I reverted it back to 1335 but still when I'm in a game there's a kind of squeling noise coming from the fans. If I tab out, the noise goes and when I tab back in it comes back. Card runs about 70C on 100% load.
 

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