How many Watts do I really need for my PSU?

refllect

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Jul 29, 2013
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I have an i3 3245 on an H77 motherboard with a HD 7770. Some sources say the minumum PSU I need is 500 watts for a 7770. Others say that 350 watts is enough.

How exactly do I calculate this? People tell me you can't just add up the Watts.
 
Solution
Ah, okay then.

I'd suggest the fully modular, 80PLUS Gold rated version of the PSU you posted.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817256084

Here are some reviews for both models:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=196
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=319

In a tiny case, you want good airflow, and a fully modular, efficient PSU is helpful for maximizing airflow and thus keeping temperatures and noise levels to a minimum.

refllect

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Jul 29, 2013
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10,810


Oh I forgot to mention that it was for a micro-ITX case that only holds SFX form factor PSUs. So 450w is as high as they make them. I wonder if I can fit a better card in for 450w

http://www.newegg.com/Product/Product.aspx?Item=N82E16817256063
 

quicksand10

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Jan 23, 2012
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Ah, okay then.

I'd suggest the fully modular, 80PLUS Gold rated version of the PSU you posted.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817256084

Here are some reviews for both models:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=196
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=319

In a tiny case, you want good airflow, and a fully modular, efficient PSU is helpful for maximizing airflow and thus keeping temperatures and noise levels to a minimum.
 
Solution

refllect

Honorable
Jul 29, 2013
363
0
10,810


Do you think I could put in a better graphics card for that PSU?