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Seasonic x750 for 570 SLI OC and 450 physX?

post #1 of 30
Thread Starter 
Hey guys I am considering getting a Seasonic X750 and was wondering if I would be able to basically max out my system on this PSU. Now obviously this would more than handle my current rig but what I am wondering is if I ever decided to go crazy and get another 570 and something like a 450 for PhysX and folding would this PSU be able to handle it? So the final tally would look something like 2 570s, a 2500k, a 450 (would have to run off of a double molex to 6 pin adapter if that makes a difference because the X750 only has 4 PCIe cables), a sound card, up to maybe 3-4 hard drives, and around 6 fans total, and I would like to have the headroom to overclock all of the GPUs and the CPU without having to worry about running out of power. Oh yea and I would would want this to be stable enough to fold without worrying about it at all, I know that Seasonic makes great PSUs but would this be asking too much from it?

And in case anybody asks, not all of these things are definitely going to happen but I am looking to buy a PSU that will last me a loooong time so I am looking to overbuy for this PSU rather than under buy, therefore I'm trying to account for all possibilities.

Also I know this X750 is being phased out in favor of the X760 but as far as I know there is no real reason to avoid the X750, correct?

Thanks for any help you can give me. If I can get a few knowledgeable people to give me a resounding "yes this PSU will do everything you could conceivably ask of it" then I would buy it today.
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post #2 of 30
I have a feeling that would put you near the edge of the PSU's specifications when folding, so it should be fine for everything else.

The X750 and X760 are virtually identical, they just made the X760 a little cheaper to produce while keeping the same level of performance.
post #3 of 30
I would shoot for 850 to be safe.
post #4 of 30
Thread Starter 
Thanks for the replies guys and keep them coming, I'm really close to buying this but I think I wanna wait for more replies or for Phaedrus to chime in, whose word is apparently gospel around here, before I do.

So far it seems like SLI 570 OC and a 450 PhysX might be pushing it or at least not give me the safety room I would like. Am I right in assuming that this PSU would be plenty for 570 SLI and a 2500K all overclocked to the max the chips could take on air, or would even this be pushing the limits of good judgement?

I do really want to get this PSU because it's at a killer price right now but I don't want to ever be PSU limited for anything that I might conceivably upgrade to in the future like I am now.
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post #5 of 30
It would work with the two GTX 570's/GTS 450 Physx... and the X-750 is a very top end PSU so drawing close to its rated capacity is perfectly fine.

I would still recommend getting 850w though if you already haven't purchased the X-750.
Edited by GameBoy - 4/15/11 at 10:43am
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post #6 of 30
Thread Starter 
Thanks for the reply. I'd normally be okay with waiting a little bit and getting the 850w but it's about $80 more expensive than I can get this X750 for right now. So if I can get a few more people to tell me that the X750 would be a good fit for at least 570 SLI and a 2500k all with room to OC as high as they will go on air without out cutting it too close for comfort then I think I will go with this X750.
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post #7 of 30
You dont need the GTS450 trust me.
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post #8 of 30
Thread Starter 
Need? I thought this was OCN?

Seriously though I recognize I wouldn't need it, especially not anytime soon because right now just the one 570 maxes everything I play but the question comes more from the fact that if possible I would like to keep this PSU for 5+ years and in that time a rig like 570 SLI, 450, and 2500k all OC'd is a possibility so I wanted to know if the PSU would allow it. I think at this point though I would be happy if I could just get a consensus that the X750 will be plenty for SLI 570 and my 2500k to all reach their max OC's on air without having to worry about power limitations.
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post #9 of 30
Quote:
Originally Posted by ZealotKi11er View Post
You dont need the GTS450 trust me.
this.

and the x750 can easily handle 570 sli OC'd

i had 2x 570 950mhz and a 4.3ghz 1090t on my ax750, all were 100% load 24/7 (folding)
post #10 of 30
Quote:
Originally Posted by juano View Post
Thanks for the reply. I'd normally be okay with waiting a little bit and getting the 850w but it's about $80 more expensive than I can get this X750 for right now. So if I can get a few more people to tell me that the X750 would be a good fit for at least 570 SLI and a 2500k all with room to OC as high as they will go on air without out cutting it too close for comfort then I think I will go with this X750.
The X650 and X750 have both hit clearance pricing over the past few weeks. It's quite reasonable to believe the X850 will also go on sale sometime soon too. The X750 is a slamming good deal right now, yes, BUT, it won't be the last time we see an impulse-buy-worthy deal out of Seasonic.

I would hate for you to buy the X750 at it's price but not be able to reliably use it!
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