Shuttle SZ77R5 PSU Calculation! NEED HELP!

I've been researching this barebones kit and have always wanted to do a small form-factor build and have seen some good reviews on this particular case. My question is..
I want to get the best performance per watt out of my shuttle
the onboard PSU is rated @ 500w and is 80 plus certified

Shuttle SZ77R5
Shuttle Here with specs

I've seen a youtube video with the guy from the unboxing videos and he has a SZ77R5 running with a core i7-2600k I beleive and an AMD Radeon HD 7970 3gb.
Shuttle With 7970 + Core i7

I'm looking to get a Sapphire Radeon HD 7950 3GB Vapor-X OC which is rated a little higher than the refrence 7970 in some ways Power For the Saphire and other cards seen here
im also going to pairing it with an i5-3750k.
i5 Power Consumption here


Everything else in the case will be low power consumption, i.e. low voltage RAM, SSD HD, and a low power Liquid Cooling Kit.
Would this be possible?
Thoughts?
9 answers Last reply
More about shuttle sz77r5 calculation help
  1. Never built in such small cases before, but i might think that the 500w is a tad to weak for it, or just enough. 550+ Is my guess.
  2. p.s. The card I'm looking at has a minimum recommended PSU @ 500w
  3. jboogey said:
    p.s. The card I'm looking at has a minimum recommended PSU @ 500w


    Do you know which brand the PSU is?
  4. it comes with the barebones kit* in the link i posted in the OP.
    Its a 80 Certified Bronze 500w PSU
    In the Youtube video that guys got a sandybridge core i7 and an AMD 7970 3gb
    playing bf3 and everything
    but I'm thinking yea but how long could a PSU hold out like that, you know?
  5. Well i'm always on the sure side, i've a less performing build than you and i'm using a 600w PSU.
  6. hmmm, anyone else have any input on this?
  7. which card are you getting? 500w is enough for almost any single card setup
  8. evang said:
    which card are you getting? 500w is enough for almost any single card setup

    Even more so considering the OP is building a Shuttle SFF which makes it nearly impossible to cram the highest-powered components in without running into thermal brick walls, so 500W should be more than enough to easily accommodate anything that can safely be crammed inside the box.
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