Go Back   AnandTech Forums > Hardware and Technology > Video Cards and Graphics

Forums
· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals with Free Stuff/Contests
· Black Friday 2014
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions
   

Reply
 
Thread Tools
Old 05-12-2008, 02:35 PM   #1
riddlen
Junior Member
 
Join Date: May 2008
Posts: 6
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

I mean, clearly they have requirements for a reason, but dont most people not even look at that? I have a 7800GT that I am moving from a 400W PSU to a 300W PSU PC. My first thought was #$% I need a new power supply (not too mention it only has SATA, no molex). What actually happens though? Does it work worse?
riddlen is offline   Reply With Quote
Old 05-12-2008, 02:39 PM   #2
BladeVenom
Lifer
 
BladeVenom's Avatar
 
Join Date: Jun 2005
Posts: 13,542
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

Usually it will cause your computer to crash. A cheap power supply may be destroyed and short out your PC.
BladeVenom is offline   Reply With Quote
Old 05-12-2008, 02:46 PM   #3
riddlen
Junior Member
 
Join Date: May 2008
Posts: 6
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

specifically, I am moving it into a Dell Inspiron 530. From what I have read, the power supply could go, but I am thinking of replacing it anyway so why not run it till it dies? I am really wondering if it degrades the video card performance much or if there is a data loss/mobo risk.
riddlen is offline   Reply With Quote
Old 05-12-2008, 02:57 PM   #4
krnmastersgt
Platinum Member
 
krnmastersgt's Avatar
 
Join Date: Jan 2008
Location: San Jose, California
Posts: 2,837
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

Different things happen under different circumstances, I've seen anywhere from just no posts to artifacts/graphical bugs and some people who forget to plug in their 6 pin connectors get something like a high pitched screaming noise from the card.
__________________
A.R.E.S:
i7 4770k
Gigabyte Z87X-UD4H
EVGA GTX 780 SC ACX @1163/1700
G.Skill ARES 16GB 2133MHz
Seasonic SS-660XP2
krnmastersgt is online now   Reply With Quote
Old 05-12-2008, 03:54 PM   #5
error8
Diamond Member
 
error8's Avatar
 
Join Date: Nov 2007
Location: Europe
Posts: 3,194
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

Quote:
Originally posted by: riddlen
specifically, I am moving it into a Dell Inspiron 530. From what I have read, the power supply could go, but I am thinking of replacing it anyway so why not run it till it dies? I am really wondering if it degrades the video card performance much or if there is a data loss/mobo risk.
Sometimes, in rare situations, when the PSU blows, it takes some pc parts with it: maybe a hard drive, or motherboard or just about everything. So, it's better to avoid the risk of being in one of those rare situations and just buy a good PSU.
__________________
Q6700 @ 3.6 ghz
Xigmatek S1283 + Antec tricool
MSI P35 Neo 2-FR
4x2048 A-data
WD 640 gb
Gigabyte 4870 1GB
Antec EarthWatts 650W
Antec 300
BenQ FP202WA (20 inch)
error8 is offline   Reply With Quote
Old 05-12-2008, 04:45 PM   #6
taltamir
Lifer
 
taltamir's Avatar
 
Join Date: Mar 2004
Posts: 13,549
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

DEATH BY FIRE!

Seriously though, don't do it...
__________________
How to protect your data guide
AA Naming Guide

I do not have a superman complex; for I am God, not superman!
The internet is a source of infinite information; the vast majority of which happens to be wrong.
taltamir is offline   Reply With Quote
Old 05-12-2008, 05:28 PM   #7
Lithan
Platinum Member
 
Join Date: Aug 2004
Posts: 2,919
Default What actually happens if you run a video card underpowered? (300W instead of 400W)

Most commonly it will reboot or shut off during gaming.
Lithan is offline   Reply With Quote
Reply

Thread Tools

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 Off

Forum Jump


All times are GMT -5. The time now is 04:34 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.