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470 SLI on 600w - Page 2

post #11 of 54
a big NO!

im folding right now with my sig rig (both at 100%) both cpu and 470 sli overclocked and watt meter reads 724 watts so a good 750w and above PSU is what you need
post #12 of 54
There's so much ignorance in this thread it's not even funny.

Quote:
Originally Posted by jprovido View Post
a big NO!

im folding right now with my sig rig (both at 100%) both cpu and 470 sli overclocked and watt meter reads 724 watts so a good 750w and above PSU is what you need
No. You forgot to count in efficiency so you're consuming around 600W.

Quote:
Originally Posted by Behemoth777 View Post
No way. Get yourself at least a 750w unit, 850w to be totally safe.
850w is stupid for two GTX 470's.

Quote:
Originally Posted by MrTOOSHORT View Post
I'd say you boot up once, then it will shut off within a few seconds after you load up Vantage.
No.

@OP 600w is cutting it extremely close, however it will work for normal load/gaming. Folding or running LinX/Furmark simultaneously with overclocks will push the PSU a little above it's rated wattage. 650w will work for two GTX 470's however if you're buying new, I recommend you buy a 750w.
Edited by GameBoy - 3/1/11 at 1:12am
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post #13 of 54
The CPU @ Anandtech is at stock, btw and their test setup is basic, not many drivers, no case fans etc. I would get a good 750w just to be safe. =)
    
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post #14 of 54
Thread Starter 
Quote:
Originally Posted by GameBoy View Post
There's so much ignorance in this thread it's not even funny.



No. You forgot to count in efficiency so you're consuming around 600W.



850w is stupid for two GTX 470's.



No.

@OP 600w is cutting it extremely close, however it will work for normal load/gaming. Folding or running LinX/Furmark simultaneously will push the PSU a little above it's rated wattage. 650w will work for two GTX 470's however if you're buying new, I recommend you buy a 750w.
thats what I'm thinking
cause my friend has an HX650, we could swap PSU's.....
i'm really short on $$ and I stupidly forgot about my PSU when I found an awesome deal on a TwinfrozerII GTX470

how would folding/linx/furmark affect the HX650?
post #15 of 54
Quote:
Originally Posted by Mr.Pie View Post
most detailed answer thanks
whats the minimum for 470 SLI?
isn't 2cables running 470 sli on a hx650 as well?
Looking at the numbers below they kinda confirm what I was saying, 600W should be enough if you don't OC. 576W non-OCed could easily translate in 800W+ OCed and 900W+ OCed and overvolted - at the plug. Subtract some 15% and from 576 at the plug you have 490W of real consumption from the rig. 490W is what the PSU supplies, not 576W. Add some 300W due to OC/OV and you wind up with a minimum PSU of some 800W (say 850W to be sure).

...once more, you should test. It is obvious your PSU has enough power to run this rig @stock speed; from there it's easy to see for yourself if you need a better PSU or not.
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post #16 of 54
Quote:
Originally Posted by Mr.Pie View Post
thats what I'm thinking
cause my friend has an HX650, we could swap PSU's.....
i'm really short on $$ and I stupidly forgot about my PSU when I found an awesome deal on a TwinfrozerII GTX470

how would folding/linx/furmark affect the HX650?
You'll be close to maximum capacity on the HX650 if you're folding 24/7 with heavy overclocks.... however there's nothing wrong with that. There's some ridiculous rule going around that you shouldn't run your PSU above 80% of it rated power.

Edit: 600w will work at stock. 650w will work with overclocks. 750w is generally what I recommend.
Edited by GameBoy - 3/1/11 at 1:20am
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post #17 of 54
FARK everyone stop arguing for a few $$

go get yourself a good quality yet cheap 1000w and have no worries - and later down the track chuck another 470 for tri sli
post #18 of 54
Quote:
Originally Posted by goldboy View Post
FARK everyone stop arguing for a few $$

go get yourself a good quality yet cheap 1000w and have no worries - and later down the track chuck another 470 for tri sli
Listen to this guy if you like wasting money.
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post #19 of 54
Quote:
No. You forgot to count in efficiency so you're consuming around 600W.
that's the point. watt meter reads 724 watts will you use a PSU less then 724 watts? I don't think so. that's why majority of people recommends a good 750w PSU.atleast give it a bit of breathing room.
post #20 of 54
Thread Starter 
Quote:
Originally Posted by dragosmp View Post
Looking at the numbers below they kinda confirm what I was saying, 600W should be enough if you don't OC. 576W non-OCed could easily translate in 800W+ OCed and 900W+ OCed and overvolted - at the plug. Subtract some 15% and from 576 at the plug you have 490W of real consumption from the rig. 490W is what the PSU supplies, not 576W. Add some 300W due to OC/OV and you wind up with a minimum PSU of some 800W (say 850W to be sure).

...once more, you should test. It is obvious your PSU has enough power to run this rig @stock speed; from there it's easy to see for yourself if you need a better PSU or not.
Quote:
Originally Posted by GameBoy View Post
You'll be close to maximum capacity on the HX650 if you're folding 24/7 with heavy overclocks.... however there's nothing wrong with that. There's some ridiculous rule going around that you shouldn't run your PSU above 80% of it rated power.
Quote:
Originally Posted by goldboy View Post
FARK everyone stop arguing for a few $$

go get yourself a good quality yet cheap 1000w and have no worries - and later down the track chuck another 470 for tri sli
hmmm
or I could trade my 600w for my friends HX650....and since its my birthday, and I still haven't gotten a birthday from my parents
i'll get them to give me a 400w-450w PSU and I guess I'll just jump start it
so i'll end up with 2x PSU's....I'm using a custom case so I guess that should solve my problem no?
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