what size psu for sli build

zeroo · 09-30-2009, 11:29 AM

Hi, ok i almost have all the parts to make my gaming pc. The MB is an ASUS M3N-HT Deluxe, Pro is an AMD Phenom 2 quad 3GHZ 940 AM2+, 8 gig DDR2 ram and and 2 GTX 275 looking to add a third at a later date (maybe).
I would like advice on what size SLI psu to go for.
Thanks for any help.

Fatback · 09-30-2009, 12:37 PM

Well the first thing I have to say is you should get 2 4890's instead. They are cheaper and preform better then the GTX 275. Honstally I would get a 5870 which eaisly beats 2 GTX 275 or 2 4890's.

Anyways I would say you need a good 650watt or better. I would go with a PC Power and cooling 750w silencer. That thing is a beast it will do triple SLI with 3 GTX 285's from what I have heard.

zeroo · 09-30-2009, 01:07 PM

Quote:

Originally Posted by Fatback

Well the first thing I have to say is you should get 2 4890's instead. They are cheaper and preform better then the GTX 275. Honstally I would get a 5870 which eaisly beats 2 GTX 275 or 2 4890's.

Anyways I would say you need a good 650watt or better. I would go with a PC Power and cooling 750w silencer. That thing is a beast it will do triple SLI with 3 GTX 285's from what I have heard.

The MB supports SLI not crossfire, i was thinking about two 4890's. I put a post on here asking advice and i was told the MB will not support C/F. And i wanted to have two cards, so nvidia it was. Maybe my next build i'll have ATI's.
Thanks vv much for youe advice

Fatback · 09-30-2009, 01:09 PM

Quote:

Originally Posted by zeroo

The MB supports SLI not crossfire, i was thinking about two 4890's. I put a post on here asking advice and i was told the MB will not support C/F. And i wanted to have two cards, so nvidia it was. Maybe my next build i'll have ATI's.
Thanks vv much for youe advice

So you already have the board my bad. I though you where doing a new build. Now that I think about it I remember your other post.

bigfellla · 10-01-2009, 06:24 PM

Under full load you will need at least 60A (the cards will take over 40A) on the 12 V rail so a 650 W will be insufficient.

StrangleHold · 10-01-2009, 07:40 PM

Quote:

Originally Posted by zeroo

Hi, ok i almost have all the parts to make my gaming pc. The MB is an ASUS M3N-HT Deluxe, Pro is an AMD Phenom 2 quad 3GHZ 940 AM2+, 8 gig DDR2 ram and and 2 GTX 275 looking to add a third at a later date (maybe).
I would like advice on what size SLI psu to go for.
Thanks for any help.

http://www.newegg.com/Product/Produc...82E16817139009

09-30-2009, 11:29 AM	#1 (permalink)
zeroo New Member Join Date: Sep 2009 Posts: 15	what size psu for sli build Hi, ok i almost have all the parts to make my gaming pc. The MB is an ASUS M3N-HT Deluxe, Pro is an AMD Phenom 2 quad 3GHZ 940 AM2+, 8 gig DDR2 ram and and 2 GTX 275 looking to add a third at a later date (maybe). I would like advice on what size SLI psu to go for. Thanks for any help.

09-30-2009, 12:37 PM	#2 (permalink)
Fatback Diamond Member Join Date: Jun 2009 Location: Kannapolis, NC Age: 18 Posts: 2,521	Well the first thing I have to say is you should get 2 4890's instead. They are cheaper and preform better then the GTX 275. Honstally I would get a 5870 which eaisly beats 2 GTX 275 or 2 4890's. Anyways I would say you need a good 650watt or better. I would go with a PC Power and cooling 750w silencer. That thing is a beast it will do triple SLI with 3 GTX 285's from what I have heard. __________________ Display: 40" Polaroid LCD TV Mobo: ASUS M4A78-EM CPU:AMD Phenom X3 8650 @2.6Ghz RAM: 4GB OCZ Blade Series @908Mhz GPU: XFX HD 4850 512MB PSU: 400w Corsair HDD: OS:250GB Seagate 7200.10/Storage:WD Caviar Blue 320GB OS: Windows Vista Home Premium 32bit/Linux Ubuntu 32bit Fatback Definition

10-01-2009, 06:24 PM	#5 (permalink)
bigfellla Platinum Member Join Date: Mar 2008 Posts: 784	Under full load you will need at least 60A (the cards will take over 40A) on the 12 V rail so a 650 W will be insufficient. __________________ PC Wizard-Power Supply Info-Multi/Single Rail PSU?-Laptop nVidia Drivers Intel (R) Core 2 Duo 3.2 GHz OC Zalman Cooler Gigabyte GA-965P-S3 with Northbridge Cooler 4GB Corsair DDR2 6400 OC 512MB BFG Technology 8800GT (715/2010) Sound Blaster X-Fi Fata1ity Platinum Series 64mb Windows Vista Ultimate 3 x 750GB Samsung F1 Corsair TX750W

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