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Thread ID: 124108 2012-04-06 11:21:00 EATXPWR and ATX power for CPU undiejuice (16495) Press F1
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1268642 2012-04-06 11:21:00 Hello there,

Recently I brought a brand new power supply unit online . Its an Aywun brand and 750watts . I've upgraded my PC but I cannot see anything displayed on screen .

I am assuming this has to do with the mere fact I may have the wrong power supply unit because my motherboard has an EATXPWR connector: 20pin + 4 pin type and a ATX12v connector for my CPU . I don't know what I am supposed to do from this point forward because I think I might fry my CPU out because I don't have that 4 pin connector .

You see, I am so used to the old ATX power supply units which used to come with a four pin connector that I can use to connect my CPU with . At the moment the main power connector uses all 20+4 pins and I do not have the 4 pin connector for my cpu . There are extra bits of other cables I have no idea what they are used for .

Its been many years since I have last upgraded . So does this mean I have to buy again another powersupply unit to solve this problem that may cause my screen not to display anything?

I hope someone can help?

Thanks






I don't have a video graphics card at the moment, but thought the onboard vga would be sufficent to show something on screen at least until I get my video card delivered to me soon .


Motherboard type: Asus P5G41T-M LX
CPU: Core 2 duo E8400 3Ghz
Power supply unit: Aywun MEGA POWER ECO Series A1-750E

Specs:
* Peak Power 750W
* 80PLUS Certified
* 140mm fan ultra quiet fan
* 20+4 pin connector
* 2 x 6pin PCIE connector
* 2 x 6+2pin PCIE connector
* 6 x IDE connectors
* 6 x SATA power connectors
* 1 x FDD connector
* Over Power Protection (OPP)
* 100-240V
* 3-year warranty
undiejuice (16495)
1268643 2012-04-06 11:26:00 If you dont connect the 4 pin (for the CPU) it wont turn on. You need it for the CPU. Take the PSU back and replace it with a PSU, thats got the 24 pin connector for the power and a 4 pin for the CPU. You need both connectors Speedy Gonzales (78)
1268644 2012-04-06 11:49:00 It's probably because Aywun PSUs are junk. OK, it may be not, but they are cheap and nasty.

If I were you I'd take it back and get something better. $70 for what they claim is a 750 watt PSU? A decent 750 watt PSU is over twice that price.
Agent_24 (57)
1268645 2012-04-06 12:00:00 The cpu wont e fried but it will just not turn on. Dont worry if your cpu wasnt powered ten your doing less damage to it than just normal wear an tear and you can still run it even if you only plug in a 4 pin cable. But its highly recomended you use an 8pin if possible and a decend power supply. Iv had a few mates just about wreck there pcs because there psus broke so they bought a cheap replacement. Slankydudl (16687)
1268646 2012-04-06 12:01:00 There's no way a new PSU won't have that 4 pin pwr connector. Looking up that model shows these specs, incl 4+4 EPS:-
Aywun MEGA POWER ECO Series
Peak Power 750W
80PLUS Certified
140mm fan ultra quiet fan
20+4 pin connector
4+4 pin EPS connector
2 x 6pin PCIE connector
2 x 6+2pin PCIE connector
6 x IDE connectors
6 x SATA power connectors
1 x FDD connector
Over Power Protection (OPP)
100-240V
3-year warranty
linw (53)
1268647 2012-04-06 12:27:00 Yeah i was thinkin it odd that the psu wouldnt have it. It will look like a pcie power cable but will have 2 sets of 4 pin connectors. Plug them both in on the top left hand side connector and it will work. If the psu is modular put them on there own rail if possible. Try not to use 4 pin if 8 pin is avaliable. If your cpu uses over 120w then definatly use 8pin as there is a large amount of resistance at these plug points so the more you have the better. Slankydudl (16687)
1268648 2012-04-06 12:47:00 @Speedy, I don't know if stores would be reluctant to accept 'errors of judgement' if I brought a PSU that didn't have something I would of wanted. Thanks

@Linw, Yes you are right. I just happened to look on the side of the box and it had 1x EPS 8 PIN (whatever that means) /ATX 4 pin. So I guess this is what I can use? Thanks.

@Agent_24, you are definetly on the right track in price. Cost also played a factor in my decision and sometimes the other brands were more expensive than the cost of a new processor itself. If there are better PSU's than the one listed, which one would you recommend as a replacement? Thanks for your response.

@ Slanky dudl, my cpu socket has only 4 pins not 8pins unfortunately. My guess is my new motherboard is too old after all. Yet again it was a cost thing and trying to find a motherboard that would cater for a core 2 duo processor which only limited me with few options in the end. Appreciate for your help and everybody elses.
undiejuice (16495)
1268649 2012-04-06 20:40:00 By all means 4 pins is plenty to power a core 2 duo cpu. Just if you hav 8 allways use 8. If not then use 4 because to mobo will e designed to use 4. And you dont need a new one use the 4pin atx. Slankydudl (16687)
1268650 2012-04-06 20:41:00 By all means 4 pins is plenty to power a core 2 duo cpu. Just if you hav 8 allways use 8. If not then use 4 because to mobo will e designed to use 4. And you dont need a new one use the 4pin atx. Slankydudl (16687)
1268651 2012-04-06 23:07:00 Just looked at a picture of your mother board it looks like the ATX connector is the socket on the right hand side of the mb right on the edge. Here. (www.google.co.nz) Trev (427)
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