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Is my PSU enough for R7950? - Page 3

post #21 of 25
Quote:
Originally Posted by curley60 View Post

I'm not trying to give bad advice, I just think that there is no such thing as overkill when it comes to a power supply, a power supply that will only use the power it needs. For $69.00 dollars you get a 1 year warranty for a power supply that has never had a bad review. I haven't used a Rosewill power supply in years so I can't say anything about it. PC Power and Cooling were the original makers of the +12v single rail and was against modular power supplies because of the power loss of removable cables. They do have a great reputation and were the first to offer a 5 year warranty.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009

Thanks


The keyword here is quality not quantity

Buy something well made that fits your needs not something crappy that way over what you need that the thing cant do anyway
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Seravee
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post #22 of 25
I would not trust that PSU.
 
Gsvlip Dudyrm
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Oda'maksv
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Gsvlip Dudyrm
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Oda'maksv
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post #23 of 25
When I answered this I didn't realize that the CPU takes a whole +12V rail to itself in a 2x +12V rail setup, so that means his PSU (OCZ ModExtreme 500w) only has one 18a rail available for a 22a card.... uh oh redface.gif but the Rosewill Capstone 450w has a single +12V @ 37a so that one should be good
Edited by WOD35 - 8/25/13 at 7:42pm
post #24 of 25
Quote:
Originally Posted by curley60 View Post

I'm not trying to give bad advice, I just think that there is no such thing as overkill when it comes to a power supply, a power supply that will only use the power it needs. For $69.00 dollars you get a 1 year warranty for a power supply that has never had a bad review. I haven't used a Rosewill power supply in years so I can't say anything about it. PC Power and Cooling were the original makers of the +12v single rail and was against modular power supplies because of the power loss of removable cables. They do have a great reputation and were the first to offer a 5 year warranty.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009

Thanks



This is not really bad advice, per say, just a bunch of misinformation.
Quote:
I just think that there is no such thing as overkill when it comes to a power supply, a power supply that will only use the power it needs.

There is such thing as overkill for PSU's, one of the most prominent examples is from efficiency. If you get a PSU that is rated far above your actual system's power needs then you will experience a massive drop in efficiency if the load falls below 10-20% of the PSU's maximum rated output (depending on the model). PSU's are made to be run at load and generally perform best in the mid-upper load ranges (say 40-70% on average). Well made PSU's will last many years before seeing any sort of performance degradation due to the use of components rated above the PSU's maximum rated output.
Quote:
PC Power and Cooling were the original makers of the +12v single rail and was against modular power supplies because of the power loss of removable cables.
Incorrect, they marketed the "advantage" of a strong, single rail in a PSU because they failed in making their own multi-rail PSU's. There is no difference in performance between a multi-rail and single rail PSU. A multi-rail PSU provides a safety net in the event a short occurs on one of the 12v rails to prevent it from burning your PC since a single rail would allow for very high amperage to get pushed through until it shut off (over 100 amps for PSU's over 1200w). The "power loss" from modular cables is also a myth; there is a slight increases in resistance, but the amount is absolutely negligible.

The PSU you linked to is somewhat outdated and the 1 year warranty is hardly worth a mention. It's of fairly midrange quality, it can be noisy due to its 80mm fan and can produce a good bit of heat being only 80+ certified. It also only has fixed cables and is only a single rail which for a 750 watt PSU can be kinda dangerous if a short occurs. Plus, why even both with a 750 watt PSU for a system that may, at most, draw around 320 watts? If it's because you think it will last longer, that too is a myth.
Edited by bR0ken_pr0Jector - 8/25/13 at 8:15pm
post #25 of 25
Thread Starter 
I thank everyone for your inputs. After reading the comments, I have decided to go with the Capstone 450. Looking forward for it to come before I put the new card on to the system.
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My System
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