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PSU recommendations for a 680.

Last response: in Systems
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January 8, 2013 2:02:43 PM

Hello,
I am building a new computer system and had worked out all my components bar a PSU (My cheap 780W one has started whistling so I want to replace it asap).

Computer will be running the setup below.

CPU: Core i5 3750k (Potentially overclock to a max of 4.8 if I can get it stable, but we'll see)
Mobo: ASRock z77 Extreme 4
Mem: 8GB Corsair Dominator GT
SSD: OCZ Agility 3
HDD: 1TB 7200 Drive
GPU: 1 680GTX and a 550Ti running as a physx card. (This is just to make use of a reasonably new card and SLI is not needed as I only use one screen)

I worked out that Power Draw could be up to around 555 Watts and wanted to know if a 550w PSU would suffice and also wanted to know the best PSU that has both a 6pin+2 PCI power cable and at least 2 6pin PCI cables. I'd rather not have to get an adapter cable and run across molex if possible. Unfortunately there are loads of PSU's out there and I'm a little lost in it all. I don't want to pay too much for the specs I'm after.

Thanks for any help you can provide!
January 8, 2013 2:14:37 PM

Plan for capacitor aging as well... Look for a 750w PSU for both capacitor aging, plus minor upgrades along the way. Stick with Antec, Seasonic, XFX or Corsair to be sure you have a quality unit. The filters on Newegg will help you with the output connectors you need..
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
January 8, 2013 2:25:07 PM

ill fix this build. there is no point of a physx card unless you play batman or borderlands. its a total waste

http://pcpartpicker.com/p/wwvu

-the heatsink will work once you get noctua to send you a free set of 1155 mounting brackets
Related resources
January 8, 2013 2:58:39 PM

Thanks for the links sadams, I'll look through and see how they measure up to my needs. It's extremely unlikely i'll need an upgrade tbh. Would like to use Corsair as their warranties are usually good.

Also, just to be clear, half the build has already arrived! The CPU, Mobo, SSD, HDD and Memory are all set up. Just the GPU, PSU, Case and CPU Cooler. left to get set up. (Just getting a corsair h80i (has considered the 100i but don't want to be messing with roof radiator on the 550d case). Also, I do have both batman games and borderlands. I know it won't make much difference as the 550ti isn't all to fast but I figured it couldn't hurt to offload the physx from the main GPU. Right? Thanks for your responses so far. ^_^
January 8, 2013 3:05:12 PM

well you made a bad purchase.

-the d3h uses digital power delivery vs the analog on the extreme4. not the biggest issue but digitial is much more accurate than analog
-a d14 heatsink performs better than a h80i. and is 1/3 as loud
-the 550D is much inferior to the R4. i have a 550D but i would have straight bought a R4 instead. the R4 runs much cooler, has better grommenting and more silence
-actually it can hurt if the 550ti is a bottleneck to the GPU
-get a gtx 670. performs like a 680, yet for 100 dollars less
January 8, 2013 3:07:33 PM

JonathanCrow91 said:
I know it won't make much difference as the 550ti isn't all to fast but I figured it couldn't hurt to offload the physx from the main GPU. Right?


It won't "hurt", but there are minimal to no actual benefits there.. The second GPU will impeed airflow through the case resulting in reduced case cooling, and it will produce more heat in general. Granted these effects would be minimal, but I would pull the 550ti out and just stick with the GTX 680. It is a beast...
January 8, 2013 3:19:23 PM

Well, it's only my second build, it's no where near as bad as my first though. I might go for the R4, I do like that case as well and the 550d is out of stock atm from the supplier I use. Heard good things about both and it came to a coin toss.

I'll admit I did have a compatibility issue with my motherboard and the memory which is now running at 1600 cl7 instead of 2133 cl9. So, I might look to get something less buggy. Get error code 23 (on the board) when I try to run the memory at default specs.

Hmm, I'd considered that it might but I wanted to test it out and get a good look at the performance itself, if it had minimal impact on performance I would probably just take the card out to save wasting power. Not really looked at the 670's but I'll certainly consider now I have. Haha. I'm pretty sure the Noctua wouldn't fit especially with my memory as it's got a high profile and fans... (Not sure why it's got fans since I've had to overclock... but there you go)

Live and learn though.
January 8, 2013 3:21:01 PM

i wouldnt even run fast ram. instant void on intel warranty
January 17, 2013 1:57:25 PM

TheBigTroll said:

-the d3h uses digital power delivery vs the analog on the extreme4. not the biggest issue but digitial is much more accurate than analog


According to ASRock it uses Digi Power Design, 8 + 4 Power Phase Design

Quote:
By adopting digital pulse-width modulation (PWM), the ASRock motherboard can provide CPU Vcore voltage more efficiently and smoothly. Compared to analog PWM, digital PWM can optimize the CPU power solution and provide a proper and stable Vcore for the processor.
8+4 Power Phase

This motherboard is designed with a 8 + 4 Power Phase design. It features sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capability and enhanced performance with the lowest temperature for advanced gamers as well.


Just for your info. = )
!