7905 500 watt PSU
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daswilhelm
Splendid
- Jan 28, 2012
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blazorthon
Glorious
- Sep 24, 2010
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Unless you're using a system that otherwise consumes very little power, I doubt that there's any 500W PSU that I'd trust with an overclocked 7950. You might get away with a Corsair CX 500 V3 or similar, but even that's a long shot. I'd recommend at least going up to one of Antec's decent 520W models.
Keep in mind that even at stock, the Radeon 7950 consumes around 140W to 160W or so in power on the +12V rail(s) and you want a PSU to only be loaded up around 40% to 70% in gaming, so you'll want the PSU to have about 75% to 125% more rated power delivery than what you're components will use. Most decent desktop CPUs for gaming will consume about 50W to 120W (also +12V) at stock in gaming. Altogether, at stock, you have about 200W to 270W from the graphics and CPU alone. The rest of the system shouldn't won't pull too much (at least unless you'r doing something like running a dozen hard drives in RAID or some similarly abnormal heavy workload), probably around 30W to 50W.
Accounting for overclocking, you'd probably want at least something like an XFX ProSeries 550W or 650W, depending on the CPU as well as how far each relevant component's power consumption is increased by the overclocking.
Keep in mind that even at stock, the Radeon 7950 consumes around 140W to 160W or so in power on the +12V rail(s) and you want a PSU to only be loaded up around 40% to 70% in gaming, so you'll want the PSU to have about 75% to 125% more rated power delivery than what you're components will use. Most decent desktop CPUs for gaming will consume about 50W to 120W (also +12V) at stock in gaming. Altogether, at stock, you have about 200W to 270W from the graphics and CPU alone. The rest of the system shouldn't won't pull too much (at least unless you'r doing something like running a dozen hard drives in RAID or some similarly abnormal heavy workload), probably around 30W to 50W.
Accounting for overclocking, you'd probably want at least something like an XFX ProSeries 550W or 650W, depending on the CPU as well as how far each relevant component's power consumption is increased by the overclocking.
daswilhelm
Splendid
- Jan 28, 2012
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a 670 on 500w is pushing it, depends on the rest of your components. i wouldn't go any less than 600w on a 670.
blazorthon
Glorious
- Sep 24, 2010
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Wattage is irrelevant. What matters is +12V power delivery. Most decent 550Ws are plenty for a GTX 670 (it doesn't consume much more power than a GTX 660 Ti anyway and even a Radeon 7970 is fine on a decent 550W). A 600W is overkill. Remember, the GTX 607 only consumes about 150W at gaming load.
Something such as an XFX Proseries 550W would be ideal. There are also some good options from Corsair, Antec (although not the BP 550W+, that thing kinda sucks), and Rosewill as well as probably a few others around there.
The GTX 670 and the Radeon 7950 have very similar power consumption.
Something such as an XFX Proseries 550W would be ideal. There are also some good options from Corsair, Antec (although not the BP 550W+, that thing kinda sucks), and Rosewill as well as probably a few others around there.
The GTX 670 and the Radeon 7950 have very similar power consumption.
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