Going to Sli soon, How much watts? - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Overclocking and Modding
Click Here to Login
Closed Thread
Thread Tools Display Modes
Old 05-24-2006, 04:14 AM   #1 (permalink)
Join Date: Feb 2006
Posts: 130
Default Going to Sli soon, How much watts?

I got a 430 watt power supply, its this exact one.


I'm going to Sli 2 7800 Gts very soon, and I've seen I need more wattage, How much should I get? Look in my sig or more details, But i've read alot about sli and ****, and relized I rather get 2 7800 gts because it a HUGE increase over the 7900 gt alone. So any help would be apperciated, By the way, thanks nitestick for helpin me out with overclocking my cpu and replying to all my posts :P

Travis18 is offline  
Old 05-24-2006, 04:40 AM   #2 (permalink)
Wizard Techie
Join Date: Oct 2004
Posts: 4,010

500w's is what Nvidia reccomends I believe. Go with around 550 though to be on the safe side. More importantly go for as many amps on a 12v line, preferably a single rail instead of dual or triple, such as this: http://www.newegg.com/Product/Produc...82E16817101008 - please note this is Tagan and not a random generic one. There is a switch on the back for split 12v's and combined 12v.


Cisco CCNA, Comptia A+, 1/3 through CCNP
Trifid is offline  
Old 05-24-2006, 08:30 AM   #3 (permalink)
Wizard Techie
Join Date: Jan 2005
Location: Delaware
Posts: 3,475

That PSU is only good for one card. Two insn't going to happen.

Try getting dual 18 amp 12v lines.
turtile is offline  
Old 05-24-2006, 10:18 AM   #4 (permalink)
Lord Techie
Join Date: Feb 2005
Location: asdf
Posts: 8,887

Just get the 1killowatt PSU... lol
c0rr0sive is offline  
Old 05-24-2006, 12:11 PM   #5 (permalink)
Ultra Techie
ulater6000's Avatar
Join Date: Jan 2006
Location: Alaska
Posts: 757
Send a message via AIM to ulater6000 Send a message via Yahoo to ulater6000

I would not reccomend running SLI in anything under 500 watts. I would personaly prefer a 600watt for SLI, but thats just me.
CompTIA A+, CompTIA Network+, Cisco CCENT, Cisco CCNA Routing & Switching
ulater6000 is offline  
Old 05-24-2006, 03:30 PM   #6 (permalink)
Monster Techie
Join Date: Sep 2004
Posts: 1,446
Send a message via AIM to Alex81388

First of all, the SLI option is only a good idea if you have higher resolution monitores (like widescreens at least 19 inches). If you, like me, are in that position, then get a PSU with dual 12v lines. I have 1 eVGA 7800gt as well, and will eventually get another. I am using this PSU:


It works very good, and the reviews show a guy with two 7600gts without a problem. Quite and cool - you should look into it.

Either way, good luck!
Sig removed due to foul language. Please read the rules regarding the allowable content of sigs before reposting your COMPLIANT sig.
Alex81388 is offline  
Old 05-24-2006, 04:41 PM   #7 (permalink)
Monster Techie
Join Date: Feb 2005
Posts: 1,306
Send a message via AIM to Brtnboarder495

Sell the current 7800GT, and buy a 7900GT. Chances are you'll only end up spending little, because you should be able to sell the 7800GT for $250, and then you can buy a 7900GT (and maybe a better PSU, that current one isn't great in general) for $275-$300. A 7900GT can OC nicely, and at lower resolutions is definitely more worth a 7800GT SLI.
Brtnboarder495 is offline  
Old 05-24-2006, 11:46 PM   #8 (permalink)
Join Date: Feb 2006
Posts: 130

i got a 17 inch gateway monitor, im just getting sli for better fps obviously, im trying to get the cheapest power supply, but not one that messes up in 1 year.
Travis18 is offline  
Old 05-24-2006, 11:57 PM   #9 (permalink)
Join Date: Feb 2006
Posts: 130

thanks border for the reply, im pretty sure i just made my decision that im not going to sli, cause obviously its made for HIGH resolutions, so im gunna sell this 7800 gt and get a 7900 gtx or a 1900xtx, thanks, NEW question, 7900 gtx or 1900xtx?
Travis18 is offline  
Old 05-25-2006, 12:08 AM   #10 (permalink)
Join Date: May 2005
Posts: 7,915
Send a message via Yahoo to talldude123

Use a PSU calculator.


talldude123 is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are Off

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:00 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.