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4-way crossfire, 2nd psu advice needed. - Page 3

post #21 of 32
12/19/11 at 1:35pm
Quote:
Originally Posted by AoHxBram View Post

Ah yeah i see, is this a dc\dc unit as you recommended,
also the price smiles to me alot more then the thermaltake's one thumb.gif
Defo will look into this one.

It doesn't have DC to DC minor rail conversion modules(it's a value unit) but offers brilliant regulation and behaves as a high end unit when crossloaded.. and is a lot cheaper than the XT x75 units.. it is a little noisy at high loads and efficiency isn't brilliant either but you can't have it all at this price.. regulation and ripple suppression wise it's the best value unit on the market.
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post #22 of 32
12/19/11 at 2:56pm
Thread Starter 
Quote:
Originally Posted by Unoriginal Sin View Post

It doesn't have DC to DC minor rail conversion modules(it's a value unit) but offers brilliant regulation and behaves as a high end unit when crossloaded.. and is a lot cheaper than the XT x75 units.. it is a little noisy at high loads and efficiency isn't brilliant either but you can't have it all at this price.. regulation and ripple suppression wise it's the best value unit on the market.

Alright, i've learned alot from this thread, and i will consider this to the XT x75 units, and see what i want to do when my new case arrives.
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post #23 of 32
12/19/11 at 8:47pm
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Quote:
Originally Posted by AoHxBram View Post

So i might want to try 4-way crossfire x, but i know my 1000W Coolermaster unit wont power it in total.

proof.gif

Not trolling, I'm quite serious.

What makes you think 1kW isn't enough?
http://www.guru3d.com/article/his-radeon-hd-6990-crossfire-review/9
If i was doing it, I'd probably throw an AX1200 at it and call it a day.
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post #24 of 32
12/20/11 at 2:17am
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Quote:
Originally Posted by u3b3rg33k View Post

proof.gif
Not trolling, I'm quite serious.
What makes you think 1kW isn't enough?
http://www.guru3d.com/article/his-radeon-hd-6990-crossfire-review/9
If i was doing it, I'd probably throw an AX1200 at it and call it a day.

I see but 900Watts is cutting it close, also they are benchmarking, and not pushing it for longer periods of time.
Another thing, they probably wont run 4 harddrive,s 20 fans, 2 water pumps and 2 fan controllers and some cathodes on their test system.

Nevertheless i will try to run the 6990 and the 6970's on the 1kW unit, but to be safe i will porbably add another psu later on.
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post #25 of 32
12/21/11 at 3:39am
Thread Starter 
What do you guys think about using a Coolermaster Realpower M620 as a 2nd power supply ?

and then i will just get a Corsair CX430 to power my old machine : Q9450, 3x ddr2 stick, HD4870. 3 HDD's and 1 dvd drive.
what you think about this ?
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post #26 of 32
12/21/11 at 8:09am
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Quote:
Originally Posted by AoHxBram View Post

I see but 900Watts is cutting it close, also they are benchmarking, and not pushing it for longer periods of time.
Another thing, they probably wont run 4 harddrive,s 20 fans, 2 water pumps and 2 fan controllers and some cathodes on their test system.
Nevertheless i will try to run the 6990 and the 6970's on the 1kW unit, but to be safe i will porbably add another psu later on.

a 1200W supply puts out 34% more power than the 900W draw they were showing. a 1500W model (http://www.newegg.com/Product/Product.aspx?Item=N82E16817256054) would put out 67% more power than the 900W draw (I defy you to draw that much DC power without sub-ambient cooling). given these are readily available (it's an 8 rail powersupply, to help prevent your house from burning to the ground should something go wrong), I don't see the benefit of tying in a second powersupply. An additional powersupply will reduce system efficiency noticeably.

If what you really want is validation that the dual PSU idea is good, just do it. I don't see the benefits - unless you're using a redundant PSU, which you're not.
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post #27 of 32
12/21/11 at 2:29pm
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Quote:
Originally Posted by u3b3rg33k View Post

(I defy you to draw that much DC power without sub-ambient cooling). given these are readily available (it's an 8 rail powersupply, to help prevent your house from burning to the ground should something
go wrong), I don't see the benefit of tying in a second powersupply. An additional powersupply will reduce system efficiency noticeably.

I have totaly no clue about what your saying here about sub ambient cooling.
and my house wont burn to the ground as the max power from a wall outlet is 3.66kW here in europe. thats 230v on 16A.

and efficiancy isnt what im looking for, im looking for somethat that will definitly power my system without any stress.
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post #28 of 32
12/21/11 at 7:18pm
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This should be able to handle it with no stress, at least on the powersupply:
15565.K1297_4.jpg

The Vmax and Vripple might not be what you're looking for though. Also, electrical codes typically don't let you pull max current, so 16A isn't a continuous rating - that's probably around 13-14A.

Using anything puts stress on it. that's just daft. Even those magical solid capacitors aren't invincible.
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post #29 of 32
12/21/11 at 11:00pm
Thread Starter 
lol, tbh im not looking for anything your talking about right now, my system wont evne be using more then 1200w in total, and your sayingi need to blow money on something i dont even know what it is or what it does.
are you sure you are replying into the right thread ?

and if the continuous rating would be 13A x230v = 2990Watts in total. so i dont need something like what you are saying. i just want to know,
if this woould be a good idea :
(thus i posted this previously) :
What do you guys think about using a Coolermaster Realpower M620 as a 2nd power supply ?

and then i will just get a Corsair CX430 to power my old machine : Q9450, 3x ddr2 stick, HD4870. 3 HDD's and 1 dvd drive.
what you think about this ?
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post #30 of 32
12/22/11 at 12:15pm
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Quote:
Originally Posted by AoHxBram View Post

lol, tbh im not looking for anything your talking about right now, my system wont evne be using more then 1200w in total, and your sayingi need to blow money on something i dont even know what it is or what it does.
... i dont need something like what you are saying.
Bro, I posted an AC/DC welder. It was a joke.
Quote:
Originally Posted by AoHxBram View Post

i just want to know,
if this woould be a good idea :
(thus i posted this previously) :
What do you guys think about using a Coolermaster Realpower M620 as a 2nd power supply ?
and then i will just get a Corsair CX430 to power my old machine : Q9450, 3x ddr2 stick, HD4870. 3 HDD's and 1 dvd drive.
what you think about this ?

I think you should use one big powersupply, and that yours is probably sufficient - you seem to not be interested in that opinion, so just do what you want.


then post pics.
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Wheatley (v 3.0)
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12GB DDR3 @ 1600 8-8-8-24 Momentus XT INX-720 win7pro 
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Soyo P-MVA 1200p 24" Dell Quietkey AX850 PC-Z60 
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Logitech G5 Oak Desk Intel High Definition Audio 
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3770k GIGABYTE GA-Z77N-WIFI HIS 4870 IceQ 1GB Patriot Intel Extreme Master, Limited Edition 1... 
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Intel 520 Series Cherryville SSDSC2CW480A3K5 2.... DVD-RW intel stock cooler Win7 Pro 
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ViewSonic VX2370Smh-LED Black 23" 7ms (GTG) IPS... ViewSonic VX2370Smh-LED Black 23" 7ms (GTG) IPS... Das Keyboard Ultimate Silent  SILVERSTONE ST45SF-G 450W SFX12V SLI Ready Cro... 
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