Recommended PSU Watts for 8800

Dwarfer · 11-01-2008, 10:58 AM

Gd evening, I recently submitted a post on HWF about my PC "stop screen"ing itself when running movies from my usb drive, well now (for no apparent reason) im having my pc reset itself occasionally when in games.

I was hunting around HWF and came across this post: (not too important). In it he stated its recommended to have a 600w+ PSU for 8800 gpus, do you think that having a 600w+ psu will solve the resetting problems (and maybe the stop screens?)

thanks for reading, hope you can help.

Ferg · 11-01-2008, 09:58 AM

I'm no psu expert but I remember deciding upon my OCZ 600w as a minimum for my BFG 8800gts, would have gone higher if i could have afforded it at the time - get the best you can

Dwarfer · 11-01-2008, 10:01 AM

Quote:

Originally Posted by ferg

I'm no psu expert but I remember deciding upon my OCZ 600w as a minimum for my BFG 8800gts, would have gone higher if i could have afforded it at the time - get the best you can

i really need a good opinion for someone whos sure on the option before i spend any money, thanks for advice tho

Big B · 11-01-2008, 05:34 PM

Well, wattage doesn't necessarily mean it all. It's if the wattage you need is available in the voltage your system needs. A 600W power supply is probably good, but that assumes that it has enough grunt on the +12V rail.

You determine wattage by multiplying the voltage and the amperage.

(V) x (I) = (W)
V=volts
I=amperage
W=watts

12V x 30A= 360W, for example.

I believe you're looking at at least 25-30A on the +12V rail, or via combination if using multiple +12V rails. This value makes allowances for the rest of the system, so it's not just exclusively for the video card.

Most decent PSU's with multiple +12V rails offer at least 2 18A rails. You'll also see what total +12V amperage you get when the rails are combined. Due to RMS values, you're not going to quite get 36A off two 18A +12V rails, but the closer to that the better.

If you don't expect to get into SLI, I'd look at a Corsair 620HX or 650TX, which are quality PSUs.

Any decent brand of power supply's 600W should do the job just fine.

Antec
Enermax
Silverstone
Corsair
Thermaltake (Toughpower, specifically)
Seasonic
OCZ
FSP/Fortron

gazaway · 11-01-2008, 06:03 PM

Which PSU you will need will also be determined by which GPU you get. Also which revision. The new 8800GT models take QUITE a bit less power than the old 8800GT models. By quite I mean they consume almost as little power as an 8600GT (A card that draws ALL of its power from the PCI-E slot, no additional connector is needed and it uses VERY little power.) So let us know which GPU it is you've got and if it's a G92 core or not.

11-01-2008, 10:58 AM	# 1 (permalink) Top
Dwarfer RiP Emily xxx Join Date: Feb 2006 Posts: 816 Times Helpful: 35 My Mood: Meh Status: Offline My Computer	Recommended PSU Watts for 8800 Gd evening, I recently submitted a post on HWF about my PC "stop screen"ing itself when running movies from my usb drive, well now (for no apparent reason) im having my pc reset itself occasionally when in games. I was hunting around HWF and came across this post: (not too important). In it he stated its recommended to have a 600w+ PSU for 8800 gpus, do you think that having a 600w+ psu will solve the resetting problems (and maybe the stop screens?) thanks for reading, hope you can help. __________________ Animals stripped ALIVE and left to die to make fur for you! SPREAD THE WORD TO STOP THIS HAPPENING I BEG YOU ON BEHALF OF ALL INNOCENT ANIMALS PLEASE LOW YOUR CHICKEN AND BEEF INTAKE TO STOP THIS FROM HAPPENING. - THERE IS NO SLAUGHTER ACT FOR CHICKENS AND MANY HOUSES ADOPT TO COMPLETE INHUMAINE WAYS OF CATTLE SLAUGHTER FOR PROFITS Kentucky Fried Cruelty, chicken slaughter truth Last edited by Dwarfer; 11-01-2008 at 11:06 AM..

11-01-2008, 09:58 AM	# 2 (permalink) Top
Ferg Manbearpig Join Date: May 2004 Age: 26 Male Posts: 760 Times Helpful: 47 My Mood: Inspired Status: Offline My Computer	I'm no psu expert but I remember deciding upon my OCZ 600w as a minimum for my BFG 8800gts, would have gone higher if i could have afforded it at the time - get the best you can __________________ FREE STUFF Spybot S&D Ad-Aware Spyware Blaster Comodo Free Firewall Speedfan Ad Block Plus (Plugin for Firefox) Malwarebytes Antimalware (MBAM) Avast -Free Antivirus

11-01-2008, 05:34 PM	# 4 (permalink) Top
Big B HWF Godfather Join Date: Dec 2001 Age: 29 Male Posts: 9,721 Times Helpful: 594 My Mood: Devilish Status: Offline My Computer	Well, wattage doesn't necessarily mean it all. It's if the wattage you need is available in the voltage your system needs. A 600W power supply is probably good, but that assumes that it has enough grunt on the +12V rail. You determine wattage by multiplying the voltage and the amperage. (V) x (I) = (W) V=volts I=amperage W=watts 12V x 30A= 360W, for example. I believe you're looking at at least 25-30A on the +12V rail, or via combination if using multiple +12V rails. This value makes allowances for the rest of the system, so it's not just exclusively for the video card. Most decent PSU's with multiple +12V rails offer at least 2 18A rails. You'll also see what total +12V amperage you get when the rails are combined. Due to RMS values, you're not going to quite get 36A off two 18A +12V rails, but the closer to that the better. If you don't expect to get into SLI, I'd look at a Corsair 620HX or 650TX, which are quality PSUs. Any decent brand of power supply's 600W should do the job just fine. Antec Enermax Silverstone Corsair Thermaltake (Toughpower, specifically) Seasonic OCZ FSP/Fortron __________________ Hardware Forums\|HWF Rules\|My DVD's\|PSU FAQ\|HWF Folding Team

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
recommended media player	Swansen	General Software	14	06-11-2006 01:06 AM
Recommended: MSFonts	Addis	Linux and Other OSes	9	11-07-2006 01:37 PM
Recommended thing i should do questions?	curtis20	CPU, Motherboards and Memory	3	05-09-2005 10:52 PM
Shouldn't SLI require more watts?	Exfoliate	Power Supplies and UPS's	5	30-04-2005 11:36 AM
Recommended Companies/Products	Big B	User Reviews	0	21-05-2002 02:51 PM

11-01-2008, 06:03 PM	# 5 (permalink) Top
gazaway Mega Geek Join Date: Sep 2007 Posts: 476 Times Helpful: 38 My Mood: Meh Status: Offline My Computer	Which PSU you will need will also be determined by which GPU you get. Also which revision. The new 8800GT models take QUITE a bit less power than the old 8800GT models. By quite I mean they consume almost as little power as an 8600GT (A card that draws ALL of its power from the PCI-E slot, no additional connector is needed and it uses VERY little power.) So let us know which GPU it is you've got and if it's a G92 core or not.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Whats this? Sponsored Listing