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[Tom's] Who's Who In Power Supplies, 2011: Brands Vs. Manufacturers - Page 2

post #11 of 24
From the article:
Quote:
Check the specifications. For example, if a PSU claims high performance on the 3.3 and 5 V rails while the 12 V rail numbers are low, then you know something is wrong
This is false. If the 3.3V and 5V rails are higher performance than 12V, it means that it's using the original ATX spec, not ATX12V. Older PCs (Pre-Pentium4) used those rails a lot more than the 12V one. If you need to replace the PSU on one of those you should NOT use a new, ATX12V spec'd unit if you can avoid it - they're not meant to handle that sort of crossload for long periods of time, and some of them can't even handle it at all.
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post #12 of 24
The article looks good, all we know that test a lot of PSUs can be hard.

I extend my invitation to see the new front page of Tom's here: http://www.tomshardware.com/?ctrl=homeV2011
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post #13 of 24
Quote:
Originally Posted by KamuiRSX View Post
Not a bad article but they did get the Rocketfish PSU's slightly incorrect. Only the first gen Rocketfish PSU's were Huntkey and they were terrible at that. The 2nd gen ones were a different OEM. Also, if I'm not mistaken, only that first RF-700 was Huntkey and the RF-500, the 2nd gen RF-700 (it has a different model number but I don't know it off the top of my head), and the RF-900 are a different OEM. I believe the 2nd gen 700w and 500w were CWT and I never got the chance to see the 900w though.
RF-900 is a Huntkey X7 (good)
RF-700v1 was a Huntkey Titan Power (meh)
RF-700v2 is a CWT PSH 550W (good but overrated)
RF-550 is a CWT PSH 450W (good but overrated)
RF-500 is a Huntkey Jumper (ok)
post #14 of 24
Quote:
Originally Posted by Manyak View Post
From the article:

This is false. If the 3.3V and 5V rails are higher performance than 12V, it means that it's using the original ATX spec, not ATX12V. Older PCs (Pre-Pentium4) used those rails a lot more than the 12V one. If you need to replace the PSU on one of those you should NOT use a new, ATX12V spec'd unit if you can avoid it - they're not meant to handle that sort of crossload for long periods of time, and some of them can't even handle it at all.
I think he meant in general. Working on legacy machines is a niche application.
post #15 of 24
Quote:
Originally Posted by Manyak View Post
From the article:

This is false. If the 3.3V and 5V rails are higher performance than 12V, it means that it's using the original ATX spec, not ATX12V. Older PCs (Pre-Pentium4) used those rails a lot more than the 12V one. If you need to replace the PSU on one of those you should NOT use a new, ATX12V spec'd unit if you can avoid it - they're not meant to handle that sort of crossload for long periods of time, and some of them can't even handle it at all.
But newer quality ATX12v 2.x PSU still provide more than enough power on the +3.3v and +5v rails.

If you need to replace a ATX12v 1.x PSU, it is most likely low power OEM or a old server.

Even on older machines, there should be enough load on the +12v (CPU/motherboard) so crossloading should not be a big issue.
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post #16 of 24
Quote:
Originally Posted by DuckieHo View Post
But newer quality ATX12v 2.x PSU still provide more than enough power on the +3.3v and +5v rails.

If you need to replace a ATX12v 1.x PSU, it is most likely low power OEM or a old server.

Even on older machines, there should be enough load on the +12v (CPU/motherboard) so crossloading should not be a big issue.
Well it can be. I needed to buy an ATX 1.3 PSU for my AthlonXP system because the Earthwatts EA430 I was using was going out of spec on the +12V due to crossloading. I replaced it with a Zippy RF5300 300W.
post #17 of 24
Quote:
Originally Posted by Phaedrus2129 View Post
Well it can be. I needed to buy an ATX 1.3 PSU for my AthlonXP system because the Earthwatts EA430 I was using was going out of spec on the +12V due to crossloading. I replaced it with a Zippy RF5300 300W.
Interesting..... The loads on the +5/+3.3v too low?

Or was the load on the +12v too low?

Athlon XP would draw something like 60-80w on 12v?
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post #18 of 24
always wanted to know whats the cheapest/best psu maker
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post #19 of 24
Quote:
Originally Posted by fl0w3n View Post
Meh, I was thinking "psh, tom's hardware" when I saw it...and then I was like ah, actually It's been a while since I've been there maybe they have improved. Nope, second I go...full screen ad pops up.
no pops up here ..... maybe u should use something else than Explorer 5?
or clean your PC
post #20 of 24
Enermax and Seasonic FTW.
    
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