Hiiiiiiiii Everybody

my system is
Motherboard : ASUS M2N4-SLI
CPU : AMD Athlon 64 3500+ AM2
Memory : 1GB ( 512MB X2 ) DDR2 533
HDD: 80GB X2 SATA 3.0 Raid-0
VGA : MSI NX8800GTS-T2D640E 640MB

and I want installed in my system two power supplys

And the questions is :-

How can I install two power supplys and the Method of installation ?

Can I installed one power supply direct For VGA only ?


help me pleeeeeeeeease

Yes you can install 2 power supply's in a server type redundancy setup or in a non redundancy setup.
But lets look at things realistically for a moment a overclocked Quad-core Core 2 Extreme QX6700 with 2 8800GTX's fully loaded only uses 442w at the wall. Assuming the psu is somewhere around 80% efficient the components alone are probably using 407w.
This article at Xbitlabs is where I found the power consumption. (http://www.xbitlabs.com/articles/other/display/1000w-psu-roundup.html)

If you really want to use 2 power supply's you can buy or just build a adapter such like this (http://www.lian-li.com/product/product04.php?cl_index=2&sc_index=10&ss_index=19), but I recommend against it.

Hi,

It is possible, but why bother when today we have power supplies up to 1,200 W on the market?

Also a good 550 W power supply is enough for your system. Maybe you are using a bad "generic" power supply.

As for a VGA-only power supply, Thermaltake has released this:

http://www.thermaltake.com/product/Power/PurePower/w0099/w0099.asp

Cheers,
Gabriel.

thank you very much for help me :)

But can i install standard power supplys for VGA ? :confused:

You mean, one PSU for the main system and another PSU for the video card?

Yes, sure.

All you need to do is to connect the most black wires from the second power supply you can in parallel to the black wires from the first power supply, then connecting the auxiliar PCI Express 6-pin connector from the second power supply to your video card.

But honestly, that is not recommended. Don't be cheap. Buy a decent PSU.

Cheers,
Gabriel.

yes you can connect two power supplies together... now I'm running on 2 (450W+400W) PS... 450W is for the MB+CPU+VGA(8800GTS) and the 400W is for my 2XHDD, 2XDVD Roms, front temperature sensor and LED display + all the cooling fans...
I used a small component called an optocoupler to switch on the second power supply when the primary gets on from the MB... actually what it does is when a voltage is detected from the primary power supply the optocoupler simply connects the Green (PSon) wire to the Black(Ground wire)in the second power supply... then the PS turns on....
when the primary is shutdown the secondary also shuts down....
Ive tested this method on lots of PC's and the results are great.... if you need in detail on how to build it put a message.... this method saves lots of money...

Hi,

It is possible, but why bother when today we have power supplies up to 1,200 W on the market?

Also a good 550 W power supply is enough for your system. Maybe you are using a bad "generic" power supply.

As for a VGA-only power supply, Thermaltake has released this:

http://www.thermaltake.com/product/Power/PurePower/w0099/w0099.asp

Cheers,
Gabriel.

Gee Gabriel... I was kinda bummed to read that. I think there's alot of value in separating the power when it comes to graphics cards with heavy power demands. Placing the additional heat inside the case is a bad idea if it can be avoided. I think I am going to experiment with the w0099 and see about mounting it outside the case.

Since the w0099 is SLI certified... I can run a lot smaller psu inside the case to just drive motherboard, accessories, and cooling fans. I ran the idea by an Antec psu tech today, and he liked it. Since the w0099 takes care of the video, and at $50 is very replaceable, we talked about the old fanless Phantom 350 in tandem with the w0099.

I sure would have like to see an article on the Antec Phantom 500, and the w0099 would have been gravy. I really like your site.

Ok, for me it's late... bbs
john

Hi,

Not a bad idea seen from this angle. I haven't thought of this before, thanks for your input!

I should post more PSU reviews towards the end of the year, as soon as I buy a load tester.

Cheers,
Gabriel.

Hi Gabriel,

I posted a user review... of the combo Thermaltake w0099 gpu psu, and the Evga GTX 8800. Not a pleasant experience. I sent all that stuff back to the retailer. Thank gawd I bought an Antec Phantom 500 and the p182 case.
I love it. Well..., my wife loves it. Dammit. :)

So now we have a crappy gpu, and a very quiet pc. Otoh, Trackmania Nations is all we need. The difference is hardly noticeable. That is what took me so long to get back to you. I wasn't all that happy about having a semi noisy graphics card to begin with.

regards,
johnrw

Did I mention that I refuse to have a noisy pc? Been there and I am tired of it.

yes you can connect two power supplies together... now I'm running on 2 (450W+400W) PS... 450W is for the MB+CPU+VGA(8800GTS) and the 400W is for my 2XHDD, 2XDVD Roms, front temperature sensor and LED display + all the cooling fans...
I used a small component called an optocoupler to switch on the second power supply when the primary gets on from the MB... actually what it does is when a voltage is detected from the primary power supply the optocoupler simply connects the Green (PSon) wire to the Black(Ground wire)in the second power supply... then the PS turns on....
when the primary is shutdown the secondary also shuts down....
Ive tested this method on lots of PC's and the results are great.... if you need in detail on how to build it put a message.... this method saves lots of money...

Hi.

I'm just desperate to learn how to build this since I already have an expensive PSU but I need more power and I don't want to buy even more expensive PSU while throwing away the good old one.

I'd really appreciate if you'd share a few helpful details. At least what is the "optocoupler" component/device you're using and how to connect it.

BIG Thanks!
Willy



SOLUTION FOUND!

Very simple! E.g. check it out here:
http://www.frozencpu.com/products/5637/cpa-167/Lian-Li_Dual_Power_Supply_Adapter_Cable.html

Or search for: "Lian-Li Dual Power Supply Adapter"
Available in many (web)shops and it also comes in version supporting 20/24 conversion at the same time.

Cheers,
Willy

great, good if you can use two psu to provide more power.

but is this practical to do if you have a good 1psu more than 1000watts.

i like this idea...

I forgot to mention that there is a far easier way to connect two PSUs to a system.

You can use two PSUs for power distribution. For example, one for feeding the main components and a second one to feed the first or second video card.

The connection is simple, just like the installation of any power supply. The only thing different you will have to do is to connect pin 14 (green wire) from both power supplies together. This connection will allow them to turn on at the same time when you push the PC on/off switch.

I hope this more correct information helps the folks looking for how to connect two PSUs together.

Cheers,
Gabriel.