So if i downgrade to a 500W PSU and up my GPU to a 6850 that would have been better? because i can get the difference from the psu price and put it into the gpu and spend it a little bit more for the 6850. I'm worried because the gtx 550ti alone took 400watt and the cpu need atleast 77watt so i'm thinking the 6850 would require a larger psu to consolidate the difference.
its true that the 6850 lets you use a 550watt psu but isn't there a rule of thumb when looking at wattage to add 20%more to it? so technically it would be about 580watt? might as well stick with the 600psu then.
No, that is not the wattage it actually uses. It uses less than 200W under full load, 300W with an i5-2500k and 20W more with HDD, case fans, etc. 30% of 300 is 90, so 390W is the max you will need. I just put 500W cuz some of the lower PSUs are low quality.
A good 500W PSU is fine for most video cards out there, except a few high end ones. The various brands like to add wattage to the reqs because they have no idea what kind of PSU is being used.
If you read the PSU guide linked in my sig, it will explain everything. The 500W Corsair will easily handle a 6870, 560ti, 570, 6950 2GB... Would I recommend it if you wanted an overclocked GTX 580? Probably not, but if you already had the PSU I would not insist you upgrade either.
Thanks for the suggestion. Yeah I bought everything last night and got the 550Ti and the Corsair 500W PSU and is running, how do you say, very niicceee
My friends were telling me to purchase the higher PSU for lower cost and kept pestering me about how I got the wrong one... tsk tsk haha