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Antec Earthwatts 750 able to run gtx 570 SLI????

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September 11, 2011 4:15:39 AM

can someone please tell me if this PSU will run gtx 570 SLI and also its a sandy bridge build and wondering what the differance will be with x8 x8 PCI e????
a b U Graphics card
September 11, 2011 4:20:46 AM

Yep, it will do just fine, even with a healthy overclock.
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September 11, 2011 4:25:59 AM

timburr said:
can someone please tell me if this PSU will run gtx 570 SLI and also its a sandy bridge build and wondering what the differance will be with x8 x8 PCI e????


750 watts from that Antec will be enough to power 2 x 7200RPM HDDs, an overclocked i7-2600K, GTX 570s in SLI, 3 x 120mm case fans, 4 sticks of DDR3 RAM, and a combo drive (Blu-Ray or DVD), a fan controller, and 4 USB Devices, with the entire system running at 100%.

In other words, you're fine.
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September 11, 2011 4:26:41 AM

really sweet cause i just bought this PSU for my new build and im very happy with my new GTX 570 after coming from a GTX 260 maxcore!!! but now im worried the x8 x8 mobo is going to bottleneck the 570s in SLI :( 
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September 11, 2011 4:28:12 AM

beenthere said:
The 570 in SLI max load consumes about 410W or ~34 amps. The Antec 750W PSU provides 25 amps. per 12V rail so you'd need to use one 12V rails for each Vid card and another for the CPU, etc.

http://www.guru3d.com/article/geforce-gtx-560-ti-sli-re...

http://www.antec.com/pdf/manuals/EA-750_Manual_EN.pdf


rite now i have my old gtx 260 for physx and i had both that and the 570 on one rail and my screen was noticably dimmer??? could that have been the reason the 260 sucks more power than the 570 also

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September 11, 2011 4:30:09 AM

and thanks for the anwers guys ill be ordering anothe 570 MONDAY! yall really helpd me out!
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a c 253 U Graphics card
September 11, 2011 4:34:28 AM

When you have a MB that drops the slot down to x8 from x16 there is a difference for sure but it is not noticeable unless you have an instrument to measure it and will not be bottlenecked. To the naked eye it is not noticeable , I was curious about this as well and I was able to ask a tech at Evga. If you want to avoid the drop down you have to have a MB with a NF200 chip.
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September 11, 2011 4:37:18 AM

inzone said:
When you have a MB that drops the slot down to x8 from x16 there is a difference for sure but it is not noticeable unless you have an instrument to measure it and will not be bottlenecked. To the naked eye it is not noticeable , I was curious about this as well and I was able to ask a tech at Evga. If you want to avoid the drop down you have to have a MB with a NF200 chip.



really? what the hell is a NF200 chip? but yeah i have an i5 2500k with an biostar TP67XE mobo and didt realize that it was x8 till after i got it but after i get this other 570 i guess ill know for sure!
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a c 226 U Graphics card
September 11, 2011 5:19:34 AM

I use 850 watt PSU's for 570's and up.....750's up to 560Ti's. But the Earthwatts new Green model is not one I'd use. It's not bad, but there's better PSU's for comparable cost. As you can see below, the difference between the two is usually about $5. You will notice when reading PSU reviews that the voltage stabilty tails off as you get closer to the PSU rating. Since hi OC's depend on stable voltages, that cushion has a direct impact.

XFX Core Edition 750 $85 http://www.newegg.com/Product/Product.aspx?Item=N82E168...
XFX Core Edition 750 $90 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

As for the x8 x8 versus x16 x16 question, the difference in cost usually is about $20 for the NF200 chip. At anything below the 560 Ti, I wouldn't bother. In most games, it will only be a few fps when measuring average frame rates.....in some however (i.e STALKER) the difference is as high as 10%. However, where ya see more of an impact in x16 x16 vs x8 x8 is in minimum frame rates .....

Here's a board I use a lot in SLI boards w/ the NF200 chip. It usually runs about $20 more than a comparable board w/o the NF200. So if building new, I'd consider the extra $20 .,... if ya have existing board, I wouldn't worry about it.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

One comment .... twin 560 Ti's (900 MHz) get 862 fps in Guru 3D's test suite .... twin 570's get 873... That's an extra $200 for 11 fps.
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September 11, 2011 5:40:57 AM

Best answer selected by timburr.
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September 11, 2011 5:42:34 AM

thats some good information and really 560 TIs??? doesnt a single 560 ti fail miserably agains a single 570????
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January 5, 2012 12:43:52 AM

timburr said:
thats some good information and really 560 TIs??? doesnt a single 560 ti fail miserably agains a single 570????



The GTX 570 phantom literally gutter stomps the 560ti, and when OC'd it performs better than a reference 580. so i would say its worth the cash
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