I recently bought a 7850 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814102999) for my old prebuilt pc (Gateway FX6840) and I'm thinking of returning the card and getting a 7870 instead, probably this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202025
My question is, will that stress my PSU too much? My PSU is a 500W by FSP group with a dual 12V rail (18.0A on each rail) and 360W total on the 12V. I think that comes out to 30 amps, which is exactly what the 7870 needs, while the 7850 wants 24 amps. Is that cutting it too close?
Some specs:
CPU: Intel i7-860 at 2.8GHz
GPU: Radeon HD 7850 2GB
PSU: FSP 450-60EP (500W peak, 18.0A on each 12V rail for 360W total)
RAM: 8GB DDR3 1333MHz (4x2GB sticks)
Chipset: Intel H57 Express
Also on a side note, I'm hearing a sort of rattling sound coming from my card. It seems to get louder every now and then whether or not it's under load, then gets quiet. Is that normal?
My question is, will that stress my PSU too much? My PSU is a 500W by FSP group with a dual 12V rail (18.0A on each rail) and 360W total on the 12V. I think that comes out to 30 amps, which is exactly what the 7870 needs, while the 7850 wants 24 amps. Is that cutting it too close?
Some specs:
CPU: Intel i7-860 at 2.8GHz
GPU: Radeon HD 7850 2GB
PSU: FSP 450-60EP (500W peak, 18.0A on each 12V rail for 360W total)
RAM: 8GB DDR3 1333MHz (4x2GB sticks)
Chipset: Intel H57 Express
Also on a side note, I'm hearing a sort of rattling sound coming from my card. It seems to get louder every now and then whether or not it's under load, then gets quiet. Is that normal?