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rise

rise

Diamond Member
Dec 13, 2004
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i never used one but one of the mods at dfi.street uses the 570w to power a pretty power hungry machine and he says its great. take it fwiw.

when i was looking i did find a couple reviews on them but that was a few months back. i remember one site compared it favorably to the ocz. try googling around.
 
jonnyGURU

jonnyGURU

Moderator <BR> Power Supplies
Moderator
Oct 30, 1999
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Skyhawk PSU's used to be utter crap. Made by same company as Allied, Deer, etc.

These look better, but the specs give me second thoughts.....

GM520SA (one of their "top of the line" PSU's): +12V1: 18A, +12V2: 16A. Not bad. But combined 12V rail is only 250W! That's only 21A on the 12V rail! I know dual rail 350W power supplies that can put out that much juice!

And 40A on the 5V rail? Why? Who needs that anymore. In fact, since the ATX12V2.0 specs, they've quit requiring 3.3V+5V combined wattage labeling because it's so unimportant to today's PC's.

You'd think their "top of the line" GM620SA would be a lot better, but again... Only 25A combined on the 12V's and 50A on the 5V!!!

I call shens. ;)
 
rise

rise

Diamond Member
Dec 13, 2004
9,116
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lol johnny, i thought they had 3 12v lines? at least the ones i've seen did. the link from OP timed out on me so i don't know which it is.
 
jonnyGURU

jonnyGURU

Moderator <BR> Power Supplies
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Oct 30, 1999
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No. The link works for me. Only two 12V rails.

Even if it had three, I'm looking at the important number (the combined 12V rails,) so even if it had 20 12V rails, it would still be an underpowered power supply. Not going to say it is or is not a good power supply because I don't have one here to look at, but judging by the label I would say poorly spec'd out.
 
rise

rise

Diamond Member
Dec 13, 2004
9,116
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yep, my mistake, link works now, no 3 rails. i understood what you were saying, i just remembered see 1 with different specs.
 
jonnyGURU

jonnyGURU

Moderator <BR> Power Supplies
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Oct 30, 1999
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Originally posted by: rise4310
yep, my mistake, link works now, no 3 rails. i understood what you were saying, i just remembered see 1 with different specs.
Click to expand...

I wish there was other models with different specs. I'm always willing to give a company another chance if they come out with a new product (case in point: Thermaltakes redemption with the TWV500,) but these just don't look like good choices, even if they are actually made better than previous models and have modular cables.

 
K

Kid Vicious

Member
Mar 6, 2005
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righty-o. im gonna steer clear for the time bean then.

gonna ponder the OCZ PS 600, Enermax 535, or an Antec TP II.
 
jonnyGURU

jonnyGURU

Moderator <BR> Power Supplies
Moderator
Oct 30, 1999
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What's wrong with your current PSU?

I mean, I can understand going for the dual 12V-rails and a native 24-pin connector, but if it ain't broke, why fix it? I've got an A64 and 6600GT on an Asus board w/ the same PSU.
 
K

Kid Vicious

Member
Mar 6, 2005
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i think a lightening strike messed it up. it operated fine with the oc above (which isn't all that much). now even at stock clock speeds it crashes at load when im playing UT2004. the blue led fans aren't lighting up anymore either, so i think something has shorted on it. I've only had it since feb of this year so I think i still have the warranty. But if it wasn't the strike that messed it up, I would rather have a much more reliable component.

 
K

Kid Vicious

Member
Mar 6, 2005
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wondering if its due to an issue my setup. As part of my obsessive cable management, I have five peripherals on one cable (DVD-RW, WD HD, Floppy, and 2x 120mm fans). It was stable before the strike, and it seems like one of the drives would have failed before the psu. input welcome.
 
jonnyGURU

jonnyGURU

Moderator <BR> Power Supplies
Moderator
Oct 30, 1999
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Originally posted by: Kensai
On Skyhawk's GM620SA...
45A @ 3.3V
50A @ 5V
20A @ 12V1
20A @ 12v2

Intresting... WHO THE HELL NEEDS 45A @ 3.3V!?!
Click to expand...

True too. But what really gets me is the "20A for each 12V rail" yet you can only put 25A total max on both at the same time. :confused:

Kid Vicious: A surge not taking out a PSU, but screwing with it's rails sounds kind of weird. If there's any issue with that PSU, it's typically cable seating. Take that "daisy chained to everything" cable and double check that everything is connected well. Maybe even take half of the crap off of it and put them on a second cable. See what that does.


 
K

Kid Vicious

Member
Mar 6, 2005
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K, ill swap some stuff around and get back to you. It seemed stable last night, but the fans still won't light. I've been using a 20-24pin adapter too, hope that hasn't messed things up.
 
I

imported_Kensai

Lifer
Nov 11, 2004
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Originally posted by: jonnyGURU
Originally posted by: Kensai
On Skyhawk's GM620SA...
45A @ 3.3V
50A @ 5V
20A @ 12V1
20A @ 12v2

Intresting... WHO THE HELL NEEDS 45A @ 3.3V!?!
Click to expand...

True too. But what really gets me is the "20A for each 12V rail" yet you can only put 25A total max on both at the same time. :confused:

Kid Vicious: A surge not taking out a PSU, but screwing with it's rails sounds kind of weird. If there's any issue with that PSU, it's typically cable seating. Take that "daisy chained to everything" cable and double check that everything is connected well. Maybe even take half of the crap off of it and put them on a second cable. See what that does.
Click to expand...

The maxes I listed were peak loads too. :(
 
jonnyGURU

jonnyGURU

Moderator <BR> Power Supplies
Moderator
Oct 30, 1999
11,815
104
106
Originally posted by: Kensai
Originally posted by: jonnyGURU
Originally posted by: Kensai
On Skyhawk's GM620SA...
45A @ 3.3V
50A @ 5V
20A @ 12V1
20A @ 12v2

Intresting... WHO THE HELL NEEDS 45A @ 3.3V!?!
Click to expand...

True too. But what really gets me is the "20A for each 12V rail" yet you can only put 25A total max on both at the same time. :confused:

Kid Vicious: A surge not taking out a PSU, but screwing with it's rails sounds kind of weird. If there's any issue with that PSU, it's typically cable seating. Take that "daisy chained to everything" cable and double check that everything is connected well. Maybe even take half of the crap off of it and put them on a second cable. See what that does.
Click to expand...

The maxes I listed were peak loads too. :(
Click to expand...


Yeah... Well, I know and I'm not sure if you know this too so I'll cover it for you or perhaps our other "readers..."

When you have 20A on each 12V rail, that doesn't mean you have 40A available on the 12V rail. You have to look at the "combined 12V rail" load, which is typically listed in watts. Of course, Watts / Volts = Amps. You'll find that RARELY does the total combined rail equal what each rail is capable of added together.

You guys need to keep your eyes on that when shopping for a dual rail PSU. Technically, all the juice is still going through the same transformer and rectifier, so only so much juice is going to get to each "rail."
 
K

Kid Vicious

Member
Mar 6, 2005
90
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0
yea, no change. rails are stable in pc probe and in the bios. don't have a prower meter to properly measure the rails though. swapped to a 20-->20pin and there was no change except the 12v rail dropped a bit. Wondering if maybe the OC combined with my use of a 20-->24pin adapter caused the 12v rail to run out of spec and caused some components to burn out. Still debating if I should try to RMA, or if I should just dump it and get a new psu.

Jonnyguru: have you had a chance to reveiw the new seasonic sli? even though it isn't as pretty, I've heard its a solid performer. would like to see it side by side with the enermax 535w sli too. not like that is a request for a review or anything.
 
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