It is currently Wed Oct 01, 2014 12:51 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Reducing power consumption from my video card?
PostPosted: Mon Oct 16, 2006 7:23 pm 
Offline

Joined: Fri Mar 12, 2004 7:56 am
Posts: 106
Location: Cambridge, MA
I've got an AGP Radeon 9800 Pro, which was pretty power-hungry for its time but a welterweight by today's standards. How much power does this baby draw when I'm just sitting around using Word or Firefox? And does cranking it down the clock/memory with ATITool reduce power consumption in any meaningful way?


Top
 Profile  
 
 Post subject:
PostPosted: Tue Oct 17, 2006 2:10 am 
Offline

Joined: Tue Sep 20, 2005 6:55 am
Posts: 5085
Location: UK
Quote:
How much power does this baby draw when I'm just sitting around using Word or Firefox?


~30W.

Xbitlabs 9800Pro measurements

Quote:
does cranking it down the clock/memory with ATITool reduce power consumption in any meaningful way?


Heat decreases linearly with frequency, but quadratically with voltage; so you should see some reduction (~5W); remember, every little counts! :wink:


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 25, 2006 10:23 am 
Offline

Joined: Fri Mar 12, 2004 7:56 am
Posts: 106
Location: Cambridge, MA
Either ATITool or a new SATA drive blew my Windows install and I've been out of commission for a week! Horrible, it's like having a sick child or something. Must have spent 20+ hours figuring out how to reinstall (turns out I ALSO had faulty Windows disks)

jaganath wrote:
Heat decreases linearly with frequency, but quadratically with voltage; so you should see some reduction (~5W); remember, every little counts! :wink:

Are you pulling my leg???

btw, that is a great resource you're pointing to at X-bit labs. The updated version is here: http://www.xbitlabs.com/articles/video/ ... noise.html

Great to know ppl are out there testing this stuff, whatever the reason (power or noise savings).


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 25, 2006 11:35 am 
Offline
Friend of SPCR

Joined: Mon Jun 13, 2005 6:48 am
Posts: 717
Location: San Francisco, CA
padmewan wrote:
Either ATITool or a new SATA drive blew my Windows install and I've been out of commission for a week! Horrible, it's like having a sick child or something. Must have spent 20+ hours figuring out how to reinstall (turns out I ALSO had faulty Windows disks)

jaganath wrote:
Heat decreases linearly with frequency, but quadratically with voltage; so you should see some reduction (~5W); remember, every little counts! :wink:

Are you pulling my leg???

btw, that is a great resource you're pointing to at X-bit labs. The updated version is here: http://www.xbitlabs.com/articles/video/ ... noise.html

Great to know ppl are out there testing this stuff, whatever the reason (power or noise savings).


Why would he be pulling any legs? There will be reductions with both frequency decreases and voltage decreases. A voltage decrease has a FAR greater effect though. If you want to shrink the voltage, you'll have to do some soldering and also figure out a stable mhz.

_________________
Quiet Wuv Wizzie
Main: I5-3570K at 3.7ghz, 16GB DDR-1600@1.35v, Asrock Z77 Extreme6, Corsair 330R, Seasonic 760XP2, Sapphire Radeon 7950| Secondary/Lan: Core i3-2100, 4GB, Msi H67MA-E35, Radeon 6790, Sugo SG02| HTPC: Core i3-2100, 4GB, AsRock H67M-ITX/HT, Antec ISK300-65| NAS: Core I3-2100, 8GB, Antec TP-550, Lian Li PC-Q08B, 4X2TB WD Green| Lappy: Latitude D620 Core 2 T7600, Quadro NVS 110M


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 25, 2006 2:48 pm 
Offline

Joined: Fri Mar 12, 2004 7:56 am
Posts: 106
Location: Cambridge, MA
merlin wrote:
Why would he be pulling any legs?

Well, the winky for starters ;) There's that famous joke page about how overclocking will allow your TV card to pull in HD from around the globe, so, anyway...
merlin wrote:
There will be reductions with both frequency decreases and voltage decreases. A voltage decrease has a FAR greater effect though. If you want to shrink the voltage, you'll have to do some soldering and also figure out a stable mhz.

Yeah, sadly my mobo allows me to increase my voltage but not decrease it. It's also set to "Auto" overclock by default, so I think that every once in a while when the GPU freezes up for whatever reason and I reboot, the BIOS claims that "Overclocking failed." Anyway, that's not the point, the point is that my mobo allows OVERclocking but AFAIK not underclocking. And now I've stopped trusting ATITool :(


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group