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Tom's Hardware > Forum > CPU & Components > Power Supplies, Cases & Mods > Will a 650w PSU be enough for GTX560ti SLI?

Will a 650w PSU be enough for GTX560ti SLI?

Forum CPU & Components : Power Supplies, Cases & Mods Will a 650w PSU be enough for GTX560ti SLI?

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Jamypatch44   02-02-2012 at 09:47:08 PM
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Hello i have been thinking of getting another GTX560ti for some time will this PSU:

The 650w Coolermaster GX be enough for SLI GTX560ti

Specs:

i5 2500k
1tb HDD
GTX560ti

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Mousemonkey   02-02-2012 at 09:48:38 PM
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Yes.

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Mousemonkey   02-02-2012 at 09:52:59 PM
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NP, have fun.

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WR2   02-02-2012 at 09:58:42 PM
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It only has 2 of the four PCI-e power connectors the 2x GTX 560Ti will need. You'll need to use molex to PCI-e adapters for the extra PSU connections.
It does have the right amount of power for your system. And it has a 5yr warranty.

Quality & performance wise - it's a bit less than 'OK'. Did you get a good price?
Cooler Master GX 650W Power Supply Review @ HardOCP

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Message edited by WR2 on 02-02-2012 at 10:00:41 PM
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Jamypatch44   02-02-2012 at 10:00:32 PM
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WR2 wrote :

It only has 2 of the four PCI-e power connectors the 2x GTX 560Ti will need. You'll need to use molex to PCI-e adapters for the extra PSU connections.
It does have the right amount of power for your system. And it has a 5yr warranty.

Quality & performance wise - it's 'OK' but not brilliant.
Cooler Master GX 650W Power Supply Review @ HardOCP


It has 3 molex i think will that be enough for two adapters?

Reply to Jamypatch44
rufus_22   02-02-2012 at 10:00:33 PM
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I am building a similar spec build with two 560 ti 's I used this calculater http://extreme.outervision.com/psucalculatorlite.jsp to determine what I needed for a psu . Keep in mind the available amperage on the 12v rail is as important as the total watts of the psu . The calculator spit out 672w as the reccomended . Good luck with the build

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WR2   02-02-2012 at 10:03:59 PM
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http://www.gttkc.com/shop/images/molex_pci-e.jpg
Each PCI-e to molex adapter wants 2 molex connectors for each PCI-e lead.
I think you'll be 'ok' with just 3 - 2 on 1 and 1 on the other.

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Jamypatch44   02-02-2012 at 10:04:12 PM
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rufus_22 wrote :

I am building a similar spec build with two 560 ti 's I used this calculater http://extreme.outervision.com/psucalculatorlite.jsp to determine what I needed for a psu . Keep in mind the available amperage on the 12v rail is as important as the total watts of the psu . The calculator spit out 672w as the reccomended . Good luck with the build



I Got this from the calculator it's good enough then yeah?

http://ttgdime.com/dimegrab/images/1ceec9.png

Reply to Jamypatch44
Jamypatch44   02-02-2012 at 10:04:34 PM
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WR2 wrote :

http://www.gttkc.com/shop/images/molex_pci-e.jpg
Each PCI-e to molex adapter wants 2 molex connectors for each PCI-e lead.
I think you'll be 'ok' with just 3 - 2 on 1 and 1 on the other.



Ok then thanks :)

Reply to Jamypatch44
Mousemonkey   02-02-2012 at 10:05:01 PM
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rufus_22 wrote :

I am building a similar spec build with two 560 ti 's I used this calculater http://extreme.outervision.com/psucalculatorlite.jsp to determine what I needed for a psu . Keep in mind the available amperage on the 12v rail is as important as the total watts of the psu . The calculator spit out 672w as the reccomended . Good luck with the build


A 95w CPU, 2x 170w cards and a couple of HDD's and you got nearly 700w! I think that calculators broken. :lol:

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WR2   02-02-2012 at 10:05:57 PM
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After reading that review again - I want to revise my rating from OK to less than OK.

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WR2   02-02-2012 at 10:14:44 PM
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SeaSonic S12II 620 Bronze 620W $70 same price as CM GX 650 with an extra 15% off w/ promo code SEASONIC15, ends 2/8

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WR2   02-02-2012 at 10:17:35 PM
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And free shipping too. CM GX 650 had $6 shipping.
6x molex connectors.

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Jamypatch44   02-02-2012 at 10:38:48 PM
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WR2 wrote :

SeaSonic S12II 620 Bronze 620W $70 same price as CM GX 650 with an extra 15% off w/ promo code SEASONIC15, ends 2/8


Why should i go for that one if my one has 650w 0_o

Reply to Jamypatch44
WR2   02-02-2012 at 10:49:32 PM
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If you already have the CM GX 650W than, of course, you wouldn't replace it with another.

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Jamypatch44   02-02-2012 at 11:04:39 PM
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WR2 wrote :

If you already have the CM GX 650W than, of course, you wouldn't replace it with another.


So will my CM GX 650W be enough for SLI and with the 3 molex to power two PCi-E adapters 2 molex in one adapter, one molex in the other?

Reply to Jamypatch44
rufus_22   02-03-2012 at 12:01:40 AM
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Mousemonkey wrote :

A 95w CPU, 2x 170w cards and a couple of HDD's and you got nearly 700w! I think that calculators broken. :lol:


sorry . I meant for my build in process which is oc'd 120mm fans x 12 140 mm fans x1 , waterloop for cpu , and gpu x 2 etc etc etc . it said min 622 ? , recomended 672 .. Sorry I left out some of the details :pt1cable:

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Jamypatch44   02-03-2012 at 12:17:44 AM
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WR2 wrote :

http://www.gttkc.com/shop/images/molex_pci-e.jpg
Each PCI-e to molex adapter wants 2 molex connectors for each PCI-e lead.
I think you'll be 'ok' with just 3 - 2 on 1 and 1 on the other.



Just found this should be all good :-)

http://uk.ebid.net/for-sale/molex- [...] gleshop_uk

http://ebid.s3.amazonaws.com/upload_big/0/5/0/1326503594-22794-29.jpg

Reply to Jamypatch44
Mousemonkey   02-03-2012 at 12:58:03 AM
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rufus_22 wrote :

sorry . I meant for my build in process which is oc'd 120mm fans x 12 140 mm fans x1 , waterloop for cpu , and gpu x 2 etc etc etc . it said min 622 ? , recomended 672 .. Sorry I left out some of the details :pt1cable:


Yeah, just one or two! :lol:

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davcon   02-03-2012 at 05:38:18 AM
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Jamypatch44 wrote :

Hello i have been thinking of getting another GTX560ti for some time will this PSU:

The 650w Coolermaster GX be enough for SLI GTX560ti

Specs:

i5 2500k
1tb HDD
GTX560ti


I wouldn't recommend running SLI with a GX650 = it hasn't reviewed very well and is a rather old design by today's standards.(poor voltage regulation).
Something that's very important in regards to dual gpu's.
You'll eventually have to buy another unit imo!

Reply to davcon
totalknowledge   02-03-2012 at 01:26:30 PM
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If you are going to use an adapter, I would use the one that is two Molex to 6-pin. Only each molex has only one 12v line running to it, where each 6-pin has three.

Reply to totalknowledge
rufus_22   02-03-2012 at 02:09:51 PM
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yah the devils in thr details I guess . For the money not bad till ya read the reviews . A lot of doa's , noise issues , etc. . By not bad ( before mousrmonkey pounces on me ) :) . Single 12v rail @ 52 amps , pfc but yah a lemon once ya dig a little . Not to mention $9.99 to buy a 1 year warranty .

Reply to rufus_22
Jamypatch44   02-03-2012 at 03:27:44 PM
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So i should use these then but i won't have one molex spare.

3 - 2 on 1 and 1 on the other.

http://www.gttkc.com/shop/images/molex_pci-e.jpg

Reply to Jamypatch44
Mousemonkey   02-03-2012 at 04:16:27 PM
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You're going to need four spare molex connectors to use those adapters.

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Jamypatch44   02-03-2012 at 05:35:39 PM
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Mousemonkey wrote :

You're going to need four spare molex connectors to use those adapters.



Damn o well i think im going to upgrade to a 950w antec psu and sell the gtx560ti save up some money and get the 7970 and in a later date crossfire them.

Reply to Jamypatch44
Jamypatch44   02-03-2012 at 05:46:53 PM
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I Meant a 850w corsair sorry

Reply to Jamypatch44
WR2   02-03-2012 at 05:56:05 PM
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Do you even need dual 7970s? Just one is about the same as dual GTX 560Ti

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Jamypatch44   02-03-2012 at 06:50:53 PM
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WR2 wrote :

Do you even need dual 7970s? Just one is about the same as dual GTX 560Ti



Im getting one now and the other one when i need it :)

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