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PSU for Dual 4870x2 - Page 2

post #11 of 109
ignore the idiots saying it will be fine.
ATi recommends 1000 watt minimum for 2


(1K Watt with two 2x3-pin and two 2x4-pin connectors for ATI CrossFireX™ technology in dual mode)
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post #12 of 109
Quote:
Originally Posted by 3XPeriment View Post
Please don't spread misinformation and ignorance. Point us to a legit review that says two 4870x2 need 850W. OP, don't worry 750W will be more than fine. Best of luck.
Why point to a review when I RUN 4870x2 Quad-Fire

But since you insist...Here

740w peak system load with a 3Ghz Core 2 Duo. Throw in an overclocked Core i7 And you'll be pulling well over 800w.

With GPU overclocking you'll then be pulling even more.

Have you ever owned and run 4870x2 Quad-Fire?
Edited by scatteh316 - 4/18/11 at 9:33am
post #13 of 109
750w enough for two 4870x2? I own one and I'm not a hundred percent sure it will. I would just say try it and if it doesnt then worry about it. But it will definitely let you know.

When I just ran a 4850 with my 4870 I could tell it was making some serious heat. People have to remember that dual 4870x2's is accounting for at least 3 complete graphics cards in power consumption cause we have to power double the ram and 4 gpu's. If your OCing your processor too? Good lock not having v droop.
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post #14 of 109
A 4870 X2 Overclocked heavily will peak over 300w+.

Your adding 2 of them, I'd be Carefull....
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post #15 of 109
Quote:
Originally Posted by scatteh316 View Post
Why point to a review when I RUN 4870x2 Quad-Fire

But since you insist...Here

740w peak system load with a 3Ghz Core 2 Duo. Throw in an overclocked Core i7 And you'll be pulling over 800w.

With GPU overclocking you'll then be pulling even more.

Have you ever owned and run 4870x2 Quad-Fire?
You just proved yourself wrong since the article says the whole system is sucking 740W from the wall. Factor in ~80% efficiency and you're way below the threshold of a good 750W unit.
post #16 of 109
Quote:
Originally Posted by Shub View Post
You just proved yourself wrong since the article says the whole system is sucking 740W from the wall. Factor in ~80% efficiency and you're way below the threshold of a good 750W unit.
Now throw in the math for an overclocked Core i7

They even say in the review they recommend a 1Kw PSU.
post #17 of 109
Quote:
Originally Posted by scatteh316 View Post
Why point to a review when I RUN 4870x2 Quad-Fire

But since you insist...Here

740w peak system load with a 3Ghz Core 2 Duo. Throw in an overclocked Core i7 And you'll be pulling well over 800w.

With GPU overclocking you'll then be pulling even more.

Have you ever owned and run 4870x2 Quad-Fire?
Don't present your false information as fact.

Quote:
Originally Posted by scatteh316 View Post
Now throw in the math for an overclocked Core i7
740w at the wall with an 80% efficient PSU would be around 600w.
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post #18 of 109
Quote:
Originally Posted by Shub View Post
You just proved yourself wrong since the article says the whole system is sucking 740W from the wall. Factor in ~80% efficiency and you're way below the threshold of a good 750W unit.
your not getting it. an overclocked core i7 need ALOT more power than a core 2 Duo.
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post #19 of 109
Quote:
Originally Posted by scatteh316 View Post
Now throw in the math for an overclocked Core i7
Add a generous 50W.
Still perfectly fine.
post #20 of 109
Quote:
Originally Posted by Shub View Post
Add a generous 50W.
Still perfectly fine.
50 watts? your crazy an overclocked i7 sucks a good 100 extra watts.
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