pcaddict2

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Hi All,
I need a new psu for my ASUS P5QL-EPU MOB, as my current psu is which is an Enermax Liberty 500W is a little underpowered I think. So after a lot of searching & reading, I've now picked 2 possible psu's to choose between.

1.MUSHIN Joule 800w
2.COUGAR GX800W

+3V3 +5V +12V1 +12V2 +12V3 +12V4 -12V +5VSB

Mushkin 26A 26A 32A 32A -- --- 0.8A 3A
Cougar 25A 25A 22A 22A 24A 24A 0.5A 3.5A

Main Connector 20+4 1 1
EPS 12V 8PIN 1 1
ATX/EPS 12V 4+4 1 8+(4+4) +4Pin 1
PCI-e 6+2 4 4
SATA 15 Pin 8 10
Peripheral 4 pin 4 6
FDD 4pin 1 1

ATX +12V 2.3/ EPS v.2.92 v.2.3/EPS/12V
Effiecency test 89% @50 load 93%@ 50% ?
EUP ready yes ?


ASUS P5QL- EPU
Intel P43/ICH10

1x PCI-e x16 slot
2xPCI-e x1 slot
3xPCI slots

The reason I chose this MOB was because I need to use

1xUAD PCI DSP effects card
1xRME HDSP9652 pci sound card

CPU: Intel E8200 2.66MHz
Graphic card: ATI Radeon HD6450 pci-e ( I need a fanless silent card)
RAM: Kingston 4x 2GB DDR-2 1066 = 8GB total
HD WD SATA WD2500/250GB + possibly 1x500GB HD
FDD 1
FANS 1xCPU +1xPSU + 2 x120mm chassis

I've read a few test reviews on both these psu's & find it very difficult to make my mind up! Incidently both are being sold for around £75.00 & both are modular!

So, any advice from you experts out there will be immensely helpful in picking the right psu for my needs! If any one of you are using or have used either of these, then please do share your experiences.

Many thanks!
 

pcaddict2

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Thanks J_E_D_70 & Delluser1,

That' what I thought as well until read a number of posts on several forums,where people have been complaining their pc freezing,blue screen etc,which among other things showed inadequate PSU's as one of the culprits!

Please correct me if I am wrong. I wanted to use a more powerful psu for the following reasons;

A 500-600w psu would be in the 85-95% load range with it's rather limited current supply,hence would heat up & become noisy as the fans would also kick in running faster. Most importantly, this would also stress the PSU greatly?

I thought it would be prudent to go for a more powerful psu as I understand, most PSUs are most effiecient in the 50-65% load range.This would in turn keep both heat & noise to a more managable level. I thought I'd make it future proof too in case i needed to add more peripherals or cards in the forseeable future.

I did a a few calculations on "Thermal Take" & 2 other PSU power calculators.....& got the following results;

Thermaltake------recommended PSU 653 W
Extremepower--- " " 571 W
Don't remember......" " 533 W

So what do you guys think of the above recommended figures? Am I NOT cutting it a bit fine with my current Enermax 500 watter then?

 
Don't know what you input on the calculators but there's no way any of them should have given you that high a number for your specs.
You won't come close to putting a 50% load on that 500 watt psu
 

Drez143

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You could get by with a 300W PSU with your build. If you come across people blaming their PSU for issues that you are explaining, then it's because of the person using a cheap PSU. Power is not the only thing a PSU provides. You need proper voltage and to minimize voltage ripple.
 

pcaddict2

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Thank you all indeed for your invaluable advice. Yes,I will of course stick with my Enermax then as you guys have recommended. I, however, really don't understand as to why these "psu calculators" are giving such high figures?

Cheers
 
Most of them are related to a mfr or retailer that is trying to sell PSUs. That and they add some cushion to be on the safe side. The thing is everyone on the supply side states absolute maximum power draw and adds cushion....the CPU mfr, GPU mfr, HDD/SDD/ODD mfr, whatever aux card you have. Then the calculators add some on top of all the other cushion. Those cushions on the max add up fast and don't reflect real world power draws on the average system.

Cheers!
 

pcaddict2

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Good points! Didn't think of that! Yes, I do agree that most if not all manufacturers & retailers using exactly this ploy to sell their most expensive models! As you guys have rightly pointed out, the Enermax Liberty 500AWT which I have is a very good unit & so I will definitely continue using it!

Thanks.