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Seasonic X650 vs GTX 570 SLI?

Magusigne

Magusigne

Golden Member
I have a fairly new Seasonic X650 and I'm thinking of adding another GTX570 to my rig.

Good or bad idea?



2 Hard Drives, Few Fans, Few Disc Drives (Never really active). Rig in the Sig.

Not worth the risk? Still have headroom?
 
You'll be pushing it, but definitely not overloading the thing. Were it a crappy PSU I'd tell you to buy a new one, but that Seasonic is :thumbsup:
 
I like to error on the side of caution when it comes to PSUs. I was pulling 770W from the wallplate with the rig in my sig. That's about 640W using a PSU that is ~83% efficient. My i7 will use more power than your 2500k, but your GTX 570s use more power than my cards.

Seasonics are very good power supplies, but I wouldn't want to run that close to the edge personally.
 
I agree... my rig pulls about 450W. I have more peripherals, but a 570 pulls about 90W more than a 5850. 330W from the socket, according to this. So you're looking at around 300W when you consider the x650's ~90% efficiency.

Edit: I mean test rig's PSU, which is closer to 85%. Still a lot of power.
 
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I wouldn't risk it at all. 750Watts + or nothing. When you start overclocking CPU's they draw a lot more power then most might think it is even more risky considering that. I would say 800w would be my bottom line for that system. Better safe than sorry.
 
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If you decide to get another power supply, I'd be very interested in purchasing your Seasonic X 650W Gold Modular. (if that's what you have). That might make your decision a little easier?
 
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i think it will be fine as seasonic are a reputable brand. it wont explode anyway as im sure the safety features would kick in if its over-loaded
 
I know we all like to say that people overestimate the size of psu they need. But in this case 2 GTX 570s in SLI are very power hungry. Moreso then their AMD counterparts. While the 650w will probably work because it is a top quality unit you won't have much headroom for overclocking.
 
nipplefish said:
I agree... my rig pulls about 450W. I have more peripherals, but a 570 pulls about 90W more than a 5850. 330W from the socket, according to this. So you're looking at around 300W when you consider the x650's ~90% efficiency.

Edit: I mean test rig's PSU, which is closer to 85%. Still a lot of power.
Click to expand...

Hey, nice rig, Nipplefish. Very, very close to mine other than your CPU OC. But that's putting you way above mine in power use - I run about 280w with a gaming load. You must be pulling at least another 100w with your CPU alone.

OP - I love the x650, and it can actually put out far more than 650w. But, I still wouldn't risk it. I bought my x650 to support dual 5850s and then decided not to double up, but the 570s are a totally different class of card. Anandtech found that a 570SLI setup used 556w in Crysis and an astronomical 773w in Furmark: http://www.anandtech.com/show/4239/nvidias-geforce-gtx-590-duking-it-out-for-the-single-card-king/16. And that's with a i7-920@3.3. Your CPU is more efficient, but at 4.5, it uses at least as much power. Perhaps you should grab a kill-a-watt and see what you're pulling down right now, and then figure an extra 570 would add 250w.
 
Compddd said:
I run 2 gtx 580 + oced i7 920 on a seasonic 760

he will be fine
Click to expand...

I will be adding a gtx570 to my current one down the road. Using the same x-760.

Save your cash for your next upgrade down the road OP. You will be fine...
 
Termie said:
Hey, nice rig, Nipplefish. Very, very close to mine other than your CPU OC. But that's putting you way above mine in power use - I run about 280w with a gaming load. You must be pulling at least another 100w with your CPU alone.

OP - I love the x650, and it can actually put out far more than 650w. But, I still wouldn't risk it. I bought my x650 to support dual 5850s and then decided not to double up, but the 570s are a totally different class of card. Anandtech found that a 570SLI setup used 556w in Crysis and an astronomical 773w in Furmark: http://www.anandtech.com/show/4239/nvidias-geforce-gtx-590-duking-it-out-for-the-single-card-king/16. And that's with a i7-920@3.3. Your CPU is more efficient, but at 4.5, it uses at least as much power. Perhaps you should grab a kill-a-watt and see what you're pulling down right now, and then figure an extra 570 would add 250w.
Click to expand...

People don't buy power supplies to run Furmark lol, and no game will ever pull as much power as Furmark.
 
Termie said:
Perhaps you should grab a kill-a-watt and see what you're pulling down right now, and then figure an extra 570 would add 250w.
Click to expand...

Seeing as a 570 has 2x 6pin connectors, which allows an absolute max (not what it would normally draw) of 225 watts, I fail to see how an extra 570 will add 250 watts.
 
TemjinGold said:
Seeing as a 570 has 2x 6pin connectors, which allows an absolute max (not what it would normally draw) of 225 watts, I fail to see how an extra 570 will add 250 watts.
Click to expand...

Anyway, it wasn't my math, it was Anandtech's testing.

Single GTX570 in Crysis: 361w
Dual GTX570 in Crysis: 556w
Difference: 195w

Single GTX570 in Furmark: 446w
Dual GTX570 in Furmark: 773w
Difference: 327w

Source: http://www.anandtech.com/show/4239/nvidias-geforce-gtx-590-duking-it-out-for-the-single-card-king/16

I'd say 250w is a reasonable estimate based on this. FYI, the TDP of a GTX570 is 219w: http://www.guru3d.com/article/geforce-gtx-570-review/2.

Unlike with CPUs, graphics cards routinely hit this mark, if not exceed it.
 
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Termie said:
Hey, nice rig, Nipplefish. Very, very close to mine other than your CPU OC. But that's putting you way above mine in power use - I run about 280w with a gaming load. You must be pulling at least another 100w with your CPU alone.

OP - I love the x650, and it can actually put out far more than 650w. But, I still wouldn't risk it. I bought my x650 to support dual 5850s and then decided not to double up, but the 570s are a totally different class of card. Anandtech found that a 570SLI setup used 556w in Crysis and an astronomical 773w in Furmark: http://www.anandtech.com/show/4239/nvidias-geforce-gtx-590-duking-it-out-for-the-single-card-king/16. And that's with a i7-920@3.3. Your CPU is more efficient, but at 4.5, it uses at least as much power. Perhaps you should grab a kill-a-watt and see what you're pulling down right now, and then figure an extra 570 would add 250w.
Click to expand...

Thanks. I love it, it's given me no reason to want to upgrade to SB. 🙂 My load test was a bit beyond just a gaming load, though. I ran LinX and Furmark at the same time. Furmark really beats the hell out of a PSU, as shown in your link. So it's kind of a worst-case scenario, you're not really going to pull that much most of the time. I still wouldn't risk SLI'd 570s though.
 
Magusigne said:
I have a fairly new Seasonic X650 and I'm thinking of adding another GTX570 to my rig.

Good or bad idea?



2 Hard Drives, Few Fans, Few Disc Drives (Never really active). Rig in the Sig.

Not worth the risk? Still have headroom?
Click to expand...

Stick with your PSU and if the PSU seems to be getting too stressed, drop the volts on your CPU overclock. You probably won't notice much difference between 4.5 GHz and 4.0 GHz and you'll probably be able to drop the voltage quite a bit.

You can probably also drop the volts on your video cards too without needing to drop the speed. Use furmark to test!
 
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