Ad
News

Sony Offers Free DVD Burner Upgrade

Published on January 14, 2004

Beginning next month, owners of Sony's 530 series of DVD drives can upgrade to 8X DVD-R and 4X DVD-RW recording speeds for free. Read more

Hitachi intros hard drive upgrade kit for notebooks

Published on September 07, 2005

Hitachi is set to offer a hard drive upgrade for notebooks that people will be able to install themselves. Read more

Want to upgrade that G3? Think different. . .

Published on September 04, 1999

Owners of Apple Power Mac G3s can't upgrade to Motorola's new G4 chip. Read more

DVD+RW drives in shock 'no upgrade' situation

Published on April 11, 2002

Owners of DVD+RW drives who thought they'd be able to upgrade them to use cheaper write-once DVD+R media via a firmware upgrade are out of luck, and the DVD+RW Alliance would appear to have egg on its face. Read more

Last Reviews & Articles
Tom's Holiday Buyer's Guide 2008, Part 4

Tom's Holiday Buyer's Guide 2008, Part 4

Published on December 02, 2008

Welcome to part four of our Holiday Gift Guide coverage. This time around, the Tom's Hardware staff picks its favorite components for your wish list rounding out 2008. Read more

4GB Gets Cheap: 9 Dual-Channel Kits Compared

4GB Gets Cheap: 9 Dual-Channel Kits Compared

Published on December 01, 2008

Recent price drops have made 4 GB DDR2 dual-channel kits affordable for even the most cost-conscious buyers. We pushed nine models to their limits to determine best value for a broad range of users. Read more

System Builder Marathon: Performance & Value

System Builder Marathon: Performance & Value

Published on November 28, 2008

We tightened the budget on this month’s enthusiast-level system while loosening our belt for the low-cost gamer box by a similar percentage. Today we gauge the effect of these changes on performance and value and compare to last month's machines. Read more

System Builder Marathon: $1,250 Enthusiast PC

System Builder Marathon: $1,250 Enthusiast PC

Published on November 27, 2008

On this, the second day of our System Builder Marathon, Don turns down the price tag of his mid-range build looking for a sweet spot just above the $1,000 marker. Let's see what sort of hardware he found for it! Read more

All the Reviews & Articles
Relatives contents
  Tom's Hardware UK and Ireland Forums » CPU & Components » Power Supplies, PC Cases & Case Mods » Is psu upgrade worth the money
 

Is psu upgrade worth the money

Advanced Search

There are 451 identified and unidentified users. To see the list of identified users, Click here
Add a reply



Word :   Username :  
 
Bottom
Author
 Thread : Is psu upgrade worth the money
 
Anonymous
Profile: stranger
More Information
n°1855250
08-29-2008 at 04:59:56 PM

The manufacturer did'nt mention the power efficiency rating so, please help me to calculate the power efficiency.

The label on power supply contain the below table.

http://i101.photobucket.com/albums/m67/melodysrinivas/SMPSTABLE-1.jpg

I want to lower my power bills
I bought this smps for $10.
Is it worth to replace this with a corsair vx450w ($80 at my place) to lower my electricity billls.
If yes, how much percentage of electricity i can save with it.


Message edited by Anonymous on 08-29-2008 at 05:20:41 PM
Related Product

Register or log in to remove.

jamesgoddard
Profile: old hand
More Information
n°1855262
08-29-2008 at 05:55:35 PM

A few assumptions but...

Assuming your average load is 200w, and the system is on for 12hrs a day, and assuming the old unit is 70% efficiant, the vx450w is 85%... then...

No brand unit uses 285W at wall, 1248.3 KWH per year

vx450w unit uses 235W at wall, 1029.3 KWH per year

Difference is 219 KWH per year, assuming $0.15 per KWH, it will take you 2 years 5 months to make up for the purchase cost...

But there are alot of assumptions there!!!

Message quoted 1 times
coldneutron
Profile: member
More Information
n°1855268
08-29-2008 at 06:21:39 PM

jamesgoddard gave a reasonable estimate. it's impossible to calculate the efficiency from the data in the table. u need power out/power in measurements to calculate the efficiency.

u might want to replace it just to have a good quality psu, especially if u do gaming or anything that stresses the system much. the cheap psu might not be up to the task and cause stability problems or worse.

danbfree
Profile: stranger
More Information
n°1856076
09-01-2008 at 01:50:50 AM

The Corsair 450 is only $70 shipped free plus $20 mail in at newegg right now.

http://www.newegg.com/Product/Prod [...] rder=PRICE

I personally wouldn't put anything cheaper in just about any desktop right now. Well worth the upgrade not just to save money over time but for quality, stability and less heat then a generic.

halister_one
Profile: member
More Information
n°1856080
09-01-2008 at 02:19:35 AM

jamesgoddard wrote :

Assuming your average load is 200w, and the system is on for 12hrs a day, and assuming the old unit is 70% efficiant, the vx450w is 85%... then...


95% of the time you PC is on idle. An X6800 @ 2.93 GHz, 2GB of RAM, an HD, a DVD drive, and a SLI'ed GTX280 draws 203W from the wall socket on idle, according to TGH's review: http://www.tomshardware.com/review [...] 07-25.html I doubt he's running a system like that with a 400W PSU :heink:

Your assumption is a bit high, unless he plays video games all the time. I would imagine he uses around 100W instead, give or take 20W. Buying a new PSU will hardly save the OP any money. Instead, use other power saving methods such as turning off the monitor when not in use. LCD monitors take up massive amounts of electricity and is thought to contribute a lot to global warming.


  Tom's Hardware UK and Ireland Forums » CPU & Components » Power Supplies, PC Cases & Case Mods » Is psu upgrade worth the money

Go to:
Add a reply
 

Forum map
MyDiscussions.Net Forum, Version 2007.1
© 2000-2006 No1Dev
Page generated in 0.511 seconds
Google ads