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500w enough? - Page 3

post #21 of 25
Well, I proved myself wrong. (Actually glad I did)

As I said, I'm on the same PSU.

As I'm typing this, it's been running dual GPU's right now to test out folding. They're both running at 99% load and it's been over an hour now without issue. GPU's are GTX9800/OC 512MB and a GTS450 1GB. Obviously not SLI'd, but they're still being used and working fine. The GTX9800 is the older more power hungry version too. (2x 6-pin) I'm sure I'm pulling out more power than 2x 5770's would.

In short, it seems like as some said, you'll be good to go!
Edited by Nightz2k - 4/30/11 at 5:26pm
post #22 of 25
Quote:
Originally Posted by Nightz2k View Post
Well, I proved myself wrong. (Actually glad I did)

As I said, I'm on the same PSU.

As I'm typing this, it's been running dual GPU's right now to test out folding. They're both running at 100% load and it's been over an hour now without issue. GPU's are GTX9800/OC 512MB and a GTS450 1GB. Obviously not SLI'd, but they're still being used and working fine. The GTX9800 is the older more power hungry version too. (2x 6-pin) I'm sure I'm pulling out more power than 2x 5770's would.

In short, it seems like as some said, you'll be good to go!
and yet a lot of people around here don't think so, they want you to overkill everything, which is not a bad thing, i just don't see the point in overkill of this type, you ruin any chance of efficiency from the psu, although the same could be said for running the psu at near full capacity, 80-85% is the sweet spot
post #23 of 25
Just took a couple pics to show exactly what I'm using.

I've been using this PSU for about 4+ years now.

post #24 of 25
That EA500 is a Seasonic S12II ~ so it's good. You would be pulling around 400-450W DC at full load (not gaming load) with two 5770's, so you're fine.

Quote:
Originally Posted by phantasmor View Post
i just don't know what a lot of the people on this forum are smoking, because 500w is more than overkill for 2 5770s and a i7 i mean 1 of those cards uses like 150w, and the cpu uses around 100 to 150w the rest of the system uses so much less that it is not worth mentioning, a 450w psu is enough for 560 ti sli setup WITH overclocking and the 5770 is slightly less powerful than a 550 ti
A 5770 uses around 100w IIRC. A 450w wouldn't cut it for a GTX 560 SLI setup, though.
Edited by GameBoy - 4/30/11 at 8:30pm
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post #25 of 25
Quote:
Originally Posted by GameBoy View Post
A 5770 uses around 100w IIRC. A 450w wouldn't cut it for a GTX 560 SLI setup, though.
wait..... i can't find proof right now, haven't been on all day, but i am 98% sure you COULD run a 560 sli setup on a 450w WITH overclocking, but i am not 100% sure right now

edit: it seems i was wrong, 550w is enough, but that makes sense now 450 for 2 5770s, 2 550s, and then 550 for 2 560s, and 2 of anything above is 750(there are only 2 above), but this is with overclocking..... you could probably get by with a 450w for sli 560s but no overclocking, 500w and SOME overclocking, 550w and you are golden! but this all really depends on what cpu you are using, how many case fans, hdds, ssds, optical drives, lights, etc... that you have, if you don't have a power hungry cpu, no case lights, few fans, etc... you might be using less power

another edit: sli 560 ti(the cards themselves) use ~298w add about 120-150w for the cpu nah, not gonna work on a 450w, might shut down in full load, even though guru3d got 498w in full load, i wouldn't chance it, i will test power cunsumption when i sli a 560 ti, i will buy a multimeter, then i can say 100% yes or no but i will say again, i wouldn't chance it

a third edit: 5770 may use ~515-520w but i like to overkill the wattage by about 30 when i tell people what the wattage of a single card is, i believe that works out better and now that i think about it, i probably would prefer to see a 500w on a sli 5770 setup than a 450w because well, your going to overclock the things! right?!
Edited by phantasmor - 5/1/11 at 10:06pm
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