I'm not a gamer, really, but after playing Portal for the first time last week I'd really like to play Portal 2. The trouble is my main desktop is of the small and quiet variety (I was on a miniature kick when I bought it). So I need a graphics card that's small and doesn't consume too much power. My question is this: Would the Radeon HD 5570 work for Portal 2?
Newegg.com - SAPPHIRE 100293L Radeon HD 5570 1GB 128-bit DDR3 PCI Express 2.1 x16 HDCP Ready Low Profile Ready Video Card
It's small and burns only 39 watts. I considered the Radeon HD 5670, since it would fit, but it uses 64 watts, which is cutting it close with my 250W (seriously) power supply. For reference, this is the case I have:
Newegg.com - ASUS T3-M2NC51PV AMD Athlon X2 / Athlon 64 FX / Athlon 64 AMD Socket AM2 NVIDIA GeForce 6150 GeForce 6150 Barebone
I don't believe the PSU is replaceable.
I've read the system requirements for Portal 2, but they seem low for the detailed videos I've seen of Portal 2.
All Power Supplies are removable so if you need to upgrade it, shouldn't be an issue at all. the 5670 is a good card from what my buddies who are avid ATi fans.