|11-20-2009, 02:53 PM||#1|
Join Date Nov 2004
Ultra X4 500 W Power Supply Review
There has been a new article posted.
Title: Ultra X4 500 W Power Supply Review
Here is a snippet:
"Ultra has recently launched a new power supply series, X4, with seven models featuring a complete modular cabling system and single-rail design. We've already reviewed the 850 W model from this series..."
Comments on this article are welcome.
Hardware Secrets Team
|11-21-2009, 02:48 AM||#2|
Join Date May 2008
Kudos to Ultra for an easy to understand modular cable explanation. This is the way it should be done by reviewers too. How else to figure out maximum capabilities unless stated all cables supplied can be used at the same time, which is the case with this PSU. Though they don't mention the length of the cables.
PP&C seems to have a good method of computing this savings with some modification for home use that I think is valid. Using 8 hours instead of 24 hours makes more sense for home use. Of course if you are a home user leaving your computer on 24 hours a day there is plenty of savings by just shutting it off when not in use.
305 watts divided by 80% equals 381.25 watts
305 watts divided by 90% equals 338.88 watts
The difference is approximately 42.37 watts.
.04237kW x 0.1135/kWh x 8hours x 365days = $14.04 savings a year or $7.43 savings a year for 85% efficiency.
$14.04 * 3years = $42 savings with 90% efficiency over 80%
$7.43 * 3years = $22 savings with 85% efficiency over 80%
Last edited by Merman; 11-21-2009 at 04:07 AM. Reason: Added efficiency comment
|12-24-2009, 12:16 PM||#3|
Join Date Oct 2004
Thanks Merman for your excellent considerations.
I'd like to point out that energy in other countries is more expensive, though. Energy in the USA is really inexpensive compared to other countries. So international readers should adjust the math.