This PSU with SLI?

Dazzeerr · 06-09-2008, 05:47 PM

Around 500W is all it will ever need with everything running fully with that hardware.

Kornowski · 06-09-2008, 05:53 PM

Dazzer, What hardware do you mean? Because I'm looking at getting a Q6600, EVGA 750i FTW and another GTS to run SLI...

Geoff, That calculator says I'd need 471watts, That's with a Q6600 at 3.4Ghz with a 1.45vCore.

[-0MEGA-] · 06-09-2008, 06:18 PM

Quote:

Originally Posted by Kornowski

Dazzer, What hardware do you mean? Because I'm looking at getting a Q6600, EVGA 750i FTW and another GTS to run SLI...

Geoff, That calculator says I'd need 471watts, That's with a Q6600 at 3.4Ghz with a 1.45vCore.

If you added in all your fans, drives, lights, etc, then it should be fairly accurate. For $2 you can actually get the "pro" version which shows you the required amperage as well.

I believe most people overestimate what they need in terms of power, some people say you need at least 750W for an SLI setup, when in reality it only needs 450-500W. BTW did you set the processor/system to 100% load?

However, even if it only requires 471W, you don't want your 520W PSU to bebe under almost 100% load all the time, and it will fail much sooner.

ramodkk · 06-09-2008, 10:56 PM

Quote:

Originally Posted by [-0MEGA-]

However, even if it only requires 471W, you don't want your 520W PSU to bebe under almost 100% load all the time, and it will fail much sooner.

+1

Exactly my point. I don't think 520W are enough to keep the whole system running almost fully. Your PSU might handle it but it could be pushing I guess.

heatsink · 06-10-2008, 02:52 AM

IMO, go with a bigger Psu
A) So it powers the system with ease
B) If u ever wanted to add more hard drives or anything like that, You have enuff power there to do so

g25racer · 06-10-2008, 04:48 AM

^^ True Might as well invest in a bigger one now so you dont have to later in life. That the way i saw it when I got my 600watt. In reality I only needed maybe a 300watt. The stock 250watt just wouldnt cut it for the card and extra hdd.

lovely? · 06-10-2008, 08:52 AM

Quote:

Originally Posted by [-0MEGA-]

If you added in all your fans, drives, lights, etc, then it should be fairly accurate. For $2 you can actually get the "pro" version which shows you the required amperage as well.

I believe most people overestimate what they need in terms of power, some people say you need at least 750W for an SLI setup, when in reality it only needs 450-500W. BTW did you set the processor/system to 100% load?

However, even if it only requires 471W, you don't want your 520W PSU to bebe under almost 100% load all the time, and it will fail much sooner.

the thing is, how many 400W PSU's come with enough PCI-E connectors for say, dual 8800GTX's? they might have the amperage for it, but the connectors just arent there.

Kornowski · 06-10-2008, 09:32 AM

My PSU has two PCI-e connectors, so I'm guessing it'll be fine... Seing as people have ran 640MB GTS' in SLI and Q6600, I'm guessing it'll be good to go!

lovely? · 06-10-2008, 09:43 AM

yours is a good exception to what i said, its a really quality PSU so it has what it needs to have, instead of just what sounds good.

Kornowski · 06-10-2008, 11:45 AM

I just found this on the net;

Quote:

I'm using a HX520, and with a Q6600 at 3.51GHz, 8800GTS 512 clocked at 792/1890/2106 (I'd say throw in an extra 25W for a GTX), 3 HDs, and 4DIMMS. During Crysis I'm pulling about 280W-300W FROM THE wall. Factor in 80% efficiency and that's about 230-240W in the system. The CPU and GPU both fully loaded, about 270W DC. My 12V rail is rock solid, but with a single card setup it's very hard to stress the HX520. But I wouldn't be surprised if the HX520 could run a GTX in a SLI given the power draw I see in my system. I definitely have the headroom for an extra GTS, but sadly - my P35 doesn't support SLI.

06-09-2008, 05:47 PM	#11 (permalink)
Dazzeerr Gold Member Join Date: Aug 2007 Location: England UK Posts: 268	Around 500W is all it will ever need with everything running fully with that hardware. __________________ Rig: Intel Core2Duo E4400 \| 2GB DDR2 Corsair \| 160GB & 250GB HDD \| GeForce 8500GT 256mb { soon 9800GT 512mb } \| ASUS P5S-MX SE Mobo \| X-Fi Xtreme Audio ---------- Want a game of... : CoD4 / CS 1.6 / CSS / TF2 / BF2 / WC3 / UT2k4 ? ---------- Steam iD : Bieji Msn : daztruman@hotmail.com

06-09-2008, 05:53 PM	#12 (permalink)
Kornowski VIP - Graphics Guru Join Date: Jul 2006 Location: Liverpool, UK Age: 18 Posts: 12,789	Dazzer, What hardware do you mean? Because I'm looking at getting a Q6600, EVGA 750i FTW and another GTS to run SLI... Geoff, That calculator says I'd need 471watts, That's with a Q6600 at 3.4Ghz with a 1.45vCore. __________________ Intel Core 2 Quad Q6600 EVGA 750i SLI FTW 4GB Crucial Ballistix @ 800MHz 2 X 8800GTS G92 in SLI Corsair HX520W Windows Vista Home Premium Seagate Barracuda 500GB 7200.11 SATA II Tuniq Tower LED OCZ XTC RAM Cooler Antec 900 (Modded)

06-10-2008, 02:52 AM	#15 (permalink)
heatsink New Member Join Date: Apr 2006 Location: The Land Down Under Posts: 12	IMO, go with a bigger Psu A) So it powers the system with ease B) If u ever wanted to add more hard drives or anything like that, You have enuff power there to do so __________________ Cpu: Q6600 @ 3ghz (333x9) Ram: 4Gb Corsair XMS @ 833mhz Gpu: Xfx 8800gts 320mb Mobo: Gigabyte Ga-P35-Ds4 HDD: 2x Seagate 320gig in Raid 0 Os: Windows Vista Home Premium 64bit Case: Antec 900 Psu: Antec 850w TruePower Quattro Kb/Mouse: Logitech G15 & G5 3dmark06: 11570

06-10-2008, 04:48 AM	#16 (permalink)
g25racer Diamond Member Join Date: Feb 2008 Location: Hamilton, MI Posts: 3,852	^^ True Might as well invest in a bigger one now so you dont have to later in life. That the way i saw it when I got my 600watt. In reality I only needed maybe a 300watt. The stock 250watt just wouldnt cut it for the card and extra hdd. __________________ CPU - AMD Athlon 64x2 5200+ @ 2.6ghz Ram - 2GB Stock clock HD - 320gb seagate & Samsung 750gb 32mb cache GPU - XFX 8600GT XXX Zalman @ 680 or 700mhz PSU - Ultra X-finity 600watt OS - Vista Home Premium(32) & Ubuntu (8.04) Ultimate Ed Audio - JVC 460watts Control - Logitech G25 Wheel & Logitech Rumblepad 2 Games - GTR2 and LFS -- Race Sim's for Life --

06-10-2008, 09:32 AM	#18 (permalink)
Kornowski VIP - Graphics Guru Join Date: Jul 2006 Location: Liverpool, UK Age: 18 Posts: 12,789	My PSU has two PCI-e connectors, so I'm guessing it'll be fine... Seing as people have ran 640MB GTS' in SLI and Q6600, I'm guessing it'll be good to go! __________________ Intel Core 2 Quad Q6600 EVGA 750i SLI FTW 4GB Crucial Ballistix @ 800MHz 2 X 8800GTS G92 in SLI Corsair HX520W Windows Vista Home Premium Seagate Barracuda 500GB 7200.11 SATA II Tuniq Tower LED OCZ XTC RAM Cooler Antec 900 (Modded)

06-10-2008, 09:43 AM	#19 (permalink)
lovely? Diamond Member Join Date: Jun 2006 Location: California Age: 15 Posts: 3,824	yours is a good exception to what i said, its a really quality PSU so it has what it needs to have, instead of just what sounds good. __________________ E4500 @ 2.93GHZ ASUS P5K-DELUXE 2GB OCZ Reaper CL3 @ 800MHZ 3-4-4-15 eVGA 8800GT OZC GameXStream 700W PSU 320GB WD Caviar SATA, 80GB WD Caviar IDE Sometimes scientists make things alot harder than they need to. All they've gotta do is put a big spring on the ground where they think it's gonna land, or send a mission to the moon to erect a sign that says "Welcome to Earth".

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