I'm considering purchasing a GTX 670, however I'm wondering if my 460w PSU can handle it?
I own a pre-built Dell XPS 8500 with these specs:
3rd Gen Intel Core i7 - 3770 (3.4 GHz with Turbo Boost to 3.9 GHz)
8GB Dual Channel DDR3 1600MHz - 2 DIMMs
1TB 7200 RPM SATA Hard Drive 6.0 Gb/s
Intel H77 motherboard PCI Express 2.0
Dell Wireless 1703 802.11b/g/n, Bluetooth v4.0+LE
These are the specs for the PSU:
+5V and +3.3V shall not exceed 142W
+12VA, +12VB and +12VC shall not exceed 385W
Now, I know that my PSU contains two 6 pin power connectors, and Dell advertises that it can run anything 225w<, however, I highly doubt it can power anything like that without problems. Since the GTX 670 uses the same power as the 560ti, I'm just wondering if I could run it.
As you listed your system you shouldn't go much over 300W while gaming assuming you don't overclock anything. Factors like heat and added USB devices will affect your power consumption of course.
The reasons I wouldn't are simply that I like to keep my PSUs for along time, and like anything running closer towards it's rated limit (and usually hotter) will shorten it's life. That just depends on how long you want to keep the system. As for the quality of the PSU Dell generally uses the good stuff in its XPS line so that's not so much of a concern, as long as you don't overclock it. Well it's not like you can overclock the CPU anyways