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Is a 650w enough? And other dumb questions. :)

post #1 of 22
Thread Starter 
So my original upgrade plan was:
Corsair 650D $200
AM3+ motherboard $170
Corsair 850W Psu $160
Total: $530

But I could do with out the case and PSU:
AM3+ motherboard $170
6950 $280
Total $450

So thats where I have a few questions?

1. Can my Corsair 650w handle a second 6950? Its gonna be through molex adapters. If it can't I have a little wiggle room in the budget for a 750w.

2. I own a 6950 msi twin frozr2, I want to add a twin frozr3. Since its a non ref design, can they crossfire? Should i just get the cheaper frozr2?

3. Also the frozr3 is clocked at a little higher speeds, so don't I need to OC mine a bit more to match?
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post #2 of 22
Quote:
Originally Posted by Tpatcher View Post
So my original upgrade plan was:
Corsair 650D $200
AM3+ motherboard $170
Corsair 850W Psu $160
Total: $530

But I could do with out the case and PSU:
AM3+ motherboard $170
6950 $280
Total $450

So thats where I have a few questions?

1. Can my Corsair 650w handle a second 6950? Its gonna be through molex adapters. If it can't I have a little wiggle room in the budget for a 750w.

2. I own a 6950 msi twin frozr2, I want to add a twin frozr3. Since its a non ref design, can they crossfire? Should i just get the cheaper frozr2?

3. Also the frozr3 is clocked at a little higher speeds, so don't I need to OC mine a bit more to match?
1. What model is it you have? I think it should be just about cutting it so just in case, better mention what model PSU you have (TX/HX etc).

2. Either Frozers will do lol.

3. You can OC them yourself anytime. Though don't plan on doing it with that Corsair PSU or you could run into stability problems.
Edited by Am* - 5/11/11 at 2:17pm
    
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post #3 of 22
If you didn't buy your parts, wait for Bulldozer .

650w is enough for a 6950, but molex adapters.................don't know. Not very idle for high wattage PSUs.
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post #4 of 22
Thread Starter 
I warned that they were dumb questions lol, just wanted to double check.

This is my PSU
http://www.newegg.com/Product/Produc...82E16817139005
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post #5 of 22
Quote:
Originally Posted by Tpatcher View Post
I warned that they were dumb questions lol, just wanted to double check.

This is my PSU
http://www.newegg.com/Product/Produc...82E16817139005
It should be OK/enough for about a year or less. After that you'll have to replace it I think.

And they weren't dumb questions, mate. I just think they would be better off in the PSU section, but don't worry about that now.
Edited by Am* - 5/11/11 at 2:19pm
    
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post #6 of 22
Newegg's PSU recommender with filling your spec's out best I can says 821 Watts.

That's 2 6950's, phenom II, High end motherboard, 4 gb ddr3, 1 cd-dvd drive, 7200 rpm hard drive (i see SSD idk what type of power those take)

With 1 6950 it's at 561 Watts.

- newegg's calc generally says more watts than needed, safe than sorry type thing.
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post #7 of 22
Quote:
Originally Posted by jagz View Post
Newegg's PSU recommender with filling your spec's out best I can says 821 Watts.

That's 2 6950's, phenom II, High end motherboard, 4 gb ddr3, 1 cd-dvd drive, 7200 rpm hard drive (i see SSD idk what type of power those take)

With 1 6950 it's at 561 Watts.

- newegg's calc generally says more watts than needed, safe than sorry type thing.
Newegg calculator isn't in any way reliable. Even the extreme outervision (most common one) overshots on the required wattage and that's by far the closest to being accurate. I would disregard what that one says.
    
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post #8 of 22
I know newegg's is adding like 100 watts so you buy a more expensive psu.

Still though, we know the 6950 takes 200 watts. So if he got 2, It would be wise to get higher than 650w PSU for sure.
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post #9 of 22
In this review they have an I7-965 overclocked to 3.75ghz with 6950's in CFX. There total system draw is under 500w, so a 650w power supply will work fine. They state that their system utilizes a WC system, and has some cold cathodes as well, so it will run more than the average system. If you plan on heavy overclocking, you may want a 750w psu or larger.

http://www.guru3d.com/article/radeon...irex-review/14
Edited by Mattb2e - 5/11/11 at 2:36pm
post #10 of 22
Quote:
Originally Posted by Mattb2e View Post
In this review they have an I7-965 overclocked to 3.75ghz with 6950's in CFX. There total system draw is under 500w, so a 650w power supply will work fine. They state that their system utilizes a WC system, and has some cold cathodes as well, so it will run more than the average system. If you plan on heavy overclocking, you may want a 750w psu or larger.


My question there is what is taking less power than it says, there? Or does every component actually take a bit less than listed?
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