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900W to 1100W PSU Group Test

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Bindibadgi 9th July 2007, 13:24 Quote
Article Edit: After speaking to Nanopoint again it appears our wires got crossed and the SilverPower SP1000 PSU was £150 INC VAT not Ex VAT. Scores and article adjusted accordingly.
Mankz 9th July 2007, 13:39 Quote
Where are the PCP&C's and the Silverstones!
f00dl3 9th July 2007, 14:25 Quote
Make sure you need one of those big boys before you buy one. I got a 650 Watt PSU with my system I built last year w/ Core 2 Duo, 2 GB PC 800 RAM, nVidia 7950 GX2 1 GB, 2x 250 GB SATA drives, TV Tuner, front USB, etc.... and the max power consumption does not peak above 215 Watts. Could have got a 450 Watt PSU and would probably have been fine :-S
Bindibadgi 9th July 2007, 14:30 Quote
Quote:
Originally Posted by Mankz.
Where are the PCP&C's and the Silverstones!

Didn't have them at the time of testing. We'll be looking into them in the future but they're not currently on the cards out of the 9 I've got coming to review.

PCPCs have only just come available too :P
cosmic 9th July 2007, 14:50 Quote
Quote:
Originally Posted by f00dl3
Make sure you need one of those big boys before you buy one. I got a 650 Watt PSU with my system I built last year w/ Core 2 Duo, 2 GB PC 800 RAM, nVidia 7950 GX2 1 GB, 2x 250 GB SATA drives, TV Tuner, front USB, etc.... and the max power consumption does not peak above 215 Watts. Could have got a 450 Watt PSU and would probably have been fine :-S

That is so true. Sitting next to a machine with an 1100W PSU going full on will be like sitting next to a one bar electric fire. Mind you summer is not too hot this year, so useful for providing background heating. :D
dire_wolf 9th July 2007, 14:57 Quote
Quote:
Originally Posted by f00dl3
Could have got a 450 Watt PSU and would probably have been fine :-S

Lol, so true, most people over spec their PSU, adopting a 'bigger is better' mentality

total waste of money unless you have a massive hard drive array or some obscenely expensive gfx setup
Bindibadgi 9th July 2007, 15:01 Quote
Quote:
Originally Posted by dire_wolf
Lol, so true, most people over spec their PSU, adopting a 'bigger is better' mentality

total waste of money unless you have a massive hard drive array or some obscenely expensive gfx setup

Which is my whole argument for the entire review XD ;)
Amon 9th July 2007, 15:23 Quote
The drop-down box for the page index needs a minor adjustment:
Quote:
Originally Posted by page source
<option value="/hardware/2007/07/09/psu_group_test_july_07/7">7 - Enermax Galaxy DXX 1000W </option>
should be
Quote:
Originally Posted by page source
<option value="/hardware/2007/07/09/psu_group_test_july_07/7">7 - Enermax Galaxy DXX 1000W Results</option>

And thanks for including the fabled Enermax unit in the comparison :)
dire_wolf 9th July 2007, 15:32 Quote
Quote:
Originally Posted by Bindibadgi
Which is my whole argument for the entire review XD ;)

Lol, sorry bud, haven't even read it yet, was just meandering through threads :D
Mister_Tad 9th July 2007, 15:46 Quote
Quote:
Originally Posted by the article
Personally, I don't see why you'd pay for the PC P&C PSU when the Enermax costs so much less

The PCP&C has a single monster 12v rail instead of 4 smaller ones

afaik the PCP&C is also rated at 1kw for higher temps and 24/7 use
and the PCP&C is, well, its a PCP&C :D
Quote:
Originally Posted by the article
the HX620 is actually a 750W model that's underrated because Corsair want to guarantee silence.

I did not know that, is it designed to cut off at >620w, or does it just keep on going?
Bindibadgi 9th July 2007, 16:24 Quote
It keeps going afaik but it's only rated to 620W because they want it to be silent, which it is :) Otherwise the heat and noise start to crank up.
Krikkit 9th July 2007, 17:46 Quote
Nice review, and thank you for putting that note in at the beginning about PSU ratings and what people actually need, a lot of people see quad-core and SLi G80's and think they need 121 jigawatts! :p

Interesting about the Corsair PSU, I'll definately move that one higher up the list on my next upgrade. :)
airchie 9th July 2007, 18:32 Quote
Quote:
Originally Posted by cosmic
That is so true. Sitting next to a machine with an 1100W PSU going full on will be like sitting next to a one bar electric fire.
Thing is, it won't be going 'full on' unless it has a massive amount of peripherals etc.

Isn't it true that a PSU is likely to be more efficient when it's not working near 100% load?
ie, buying a bigger PSU like this and running it at less than 50% load may actually be MORE efficient than getting a 430W PSU and making it work like a slave to maintain your power requirements?

Can you lovely Bit-Techers try running a test like this to confirm or refute this idea? :)
Bindibadgi 9th July 2007, 18:41 Quote
Yea. But there's arguments over it: should you run at PSU at 50-75% and not stress it too hard? Or, do you buy what you need citing that it says it can do that so that's what it should be capable of.
cosmic 9th July 2007, 21:22 Quote
Quote:
Originally Posted by airchie

Isn't it true that a PSU is likely to be more efficient when it's not working near 100% load?
ie, buying a bigger PSU like this and running it at less than 50% load may actually be MORE efficient than getting a 430W PSU and making it work like a slave to maintain your power requirements?

Can you lovely Bit-Techers try running a test like this to confirm or refute this idea? :)

The more recent PSUs rated as 80+ efficient provide that rating in the 20% to 80% load range. There are some interesting efficiency measurements on the link below for the Corsair HX520/620 PSU where as you say they are most efficient around the 50% of max load mark. However, given most systems idle around the 100W mark and rarely exceed 250W, that makes the optimum PSU rating about 400 Watt for people not using a pair of power hungry graphics cards in SLI?crossfire mode. For those guys, these big units are OK, as long as they can get rid of all the heat somewhere

http://www.silentpcreview.com/article692-page4.html
pillow 10th July 2007, 00:03 Quote
y would you anyone but a select few need one of those? corsair hx620 is enough. another way to make money.....
Woodstock 10th July 2007, 07:08 Quote
Quote:
Seasonic is a hugely popular brand in the online community, renowned for their very quiet, yet very capable PSUs and at least one member of our own staff swears by them exclusively.

just out of curiosity who would that be? i think id be more tempted to grab to hx 520's then one big
airchie 10th July 2007, 10:30 Quote
I like the Corsairs PSUs too (since I have one) but I think they're manufactured for Corsair by Seasonic anyway aren't they?
they're deffo made by another company anyway. :)
Bindibadgi 10th July 2007, 11:51 Quote
Quote:
Originally Posted by cosmic
The more recent PSUs rated as 80+ efficient provide that rating in the 20% to 80% load range. There are some interesting efficiency measurements on the link below for the Corsair HX520/620 PSU where as you say they are most efficient around the 50% of max load mark. However, given most systems idle around the 100W mark and rarely exceed 250W, that makes the optimum PSU rating about 400 Watt for people not using a pair of power hungry graphics cards in SLI?crossfire mode. For those guys, these big units are OK, as long as they can get rid of all the heat somewhere

http://www.silentpcreview.com/article692-page4.html

Power hungry SLI and CrossFire needs anywhere between 400-550W in our experience with only a single hard drive, single fan and single DVD drive. Obviously people's setups vary as they add more kit. To be 80Plus certified they need to have an 80+ real efficiency at 20, 50 and 100% load.

Wood: Last time I checked Brett swears by them :D I've always owned Enermax personally.
I_think_I_know 10th July 2007, 18:31 Quote
I can't wait to see the new range of Gigabyte PSU's - it looks amazing.
I agree, Enermax is a good product.

I like reviews like this because a lot of people underestimate the importance of a good PSU, bigger does not necessarily mean better, but price does and I have seen friends with cheap nasty PSU which claim to be 550w, but they not true 550w.

I was reading the Gigabyte ODIN and it comes with some very good features.
If it does what it claims it does, then I think that we will all have better choices.
Also, apparently it comes with 4x PCI-Express cables, each supporting 6&8-pin connectors for your graphics – now that is cool.

Anyone know when the ODIN is available in the UK?
Bindibadgi 10th July 2007, 18:39 Quote
We've got an ODIN GT coming which is brand new and has software control as well as all the latest cables. They'll be available "soon" afaik. We're getting one of the first in the country to review.
I_think_I_know 10th July 2007, 18:51 Quote
Thx for the reply, I will keep my eyes open for your review - around when?
Apparenlty you can "control" the PSU and it comes with 4 therometers - something like that!

Will it go up against other PSU?
cosmic 10th July 2007, 18:55 Quote
Quote:
Originally Posted by Bindibadgi
We've got an ODIN GT coming which is brand new and has software control as well as all the latest cables. They'll be available "soon" afaik. We're getting one of the first in the country to review.

Software control of a PSU - I am going to look into this some more. Had just about made up my mind to go with a Corsair HX520, but this sounds interesting.
Tim S 10th July 2007, 21:00 Quote
Quote:
Originally Posted by I_think_I_know
Thx for the reply, I will keep my eyes open for your review - around when?
Apparenlty you can "control" the PSU and it comes with 4 therometers - something like that!

Will it go up against other PSU?

We're going to be completing the testing later this month but instead of publishing one big group test, we think it's going to be better (and more timely) to drip feed the power supplies out as individual reviews. :)
EmJay 11th July 2007, 01:53 Quote
I was a little surprised to see the Enermax Galaxy spoken of so highly - the company I work for has recently sworn off the Galaxys as we've had too many problems with them failing. We're Seasonic fans for the most part, they've been much more reliable for us. :)

This was a very useful article, keep on rocking!
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