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650 watt PSU enough for sli gtx 670 and i7 3770k?

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April 21, 2013 2:53:54 PM

So I'm putting together the final parts of my build and I ended up scoring a Corsair TX650 PSU for 70 bucks on amazon a couple of weeks ago. But now that I'm thinking about going duel 670's and may eventually go to full water cooling later on. I'm afraid of my PSU not being able to handle this in the future (plus I kinda wanna go modular so i have better cable management) Here are my curent components I'm looking at

CPU: i7 3770k (plan on ocing this to 4.5ghz+ if possible)
CPU cooler: NZXT Krakenx60 280 mm radiator ( plan on replacing with custom loop down the line)
GPU: GTX 670 Windforce x3 in SLI(plan OCing each)
Mobo: Asrock z77 extreme 6
Memory: Corsair vengance series (2x4 GB)
Storage: 128 gb Samsung 840 Pro and Western Digital 2tb 7200 RPM HDD
Case: Nzxt phantom 820
PSU: Corsair TX650

Will this PSU be enough to handle all that or should I bump up to a 750/850 watt?
April 21, 2013 3:00:36 PM

mhirt34 said:
So I'm putting together the final parts of my build and I ended up scoring a Corsair TX650 PSU for 70 bucks on amazon a couple of weeks ago. But now that I'm thinking about going duel 670's and may eventually go to full water cooling later on. I'm afraid of my PSU not being able to handle this in the future (plus I kinda wanna go modular so i have better cable management) Here are my curent components I'm looking at

CPU: i7 3770k (plan on ocing this to 4.5ghz+ if possible)
CPU cooler: NZXT Krakenx60 280 mm radiator ( plan on replacing with custom loop down the line)
GPU: GTX 670 Windforce x3 in SLI(plan OCing each)
Mobo: Asrock z77 extreme 6
Memory: Corsair vengance series (2x4 GB)
Storage: 128 gb Samsung 840 Pro and Western Digital 2tb 7200 RPM HDD
Case: Nzxt phantom 820
PSU: Corsair TX650

Will this PSU be enough to handle all that or should I bump up to a 750/850 watt?


Bump it up to about 850W definitely. You want that extra headroom so your comfortable and it's less stress on the PSU
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April 21, 2013 3:01:18 PM

Sounds to me like you will be running at 800 watts at a minimum. And then from there if you want to overclock anything you are clearly going to need more power, so i would say an 850 minimum and anything from there on up is just going to make life easier as far as overclocking is concerned.
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April 21, 2013 3:13:33 PM

Hmm well it looks like i will be going with a 850 watt PSU then! Thanks guys!
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April 21, 2013 3:13:34 PM

Hmm well it looks like i will be going with a 850 watt PSU then! Thanks guys!
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April 21, 2013 3:16:17 PM

mhirt34 said:
Hmm well it looks like i will be going with a 850 watt PSU then! Thanks guys!


Yeah you won't be the using the full 850W any time soon but just nice to have :) 
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April 21, 2013 3:22:47 PM

At most on an unoverclocked system with two 670's I'd say you'd be using 600W at the max. The problem is, PSU's slowly degrade, and often the amps they can put out on the 12V rail also degrade too. And PSU's are not designed to be running at 90%-100% capacity all the time, which will greatly reduce lifespan. I'd go with 750W as a minimum, so its not too loud, but still has headroom to not do any damage.
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April 21, 2013 4:19:17 PM

Yeah I got that one originally but it asploded in a day :/  I then went for a Seasonic 850Watt which was crappy and loud as hell (fan would go to 100% at 200W load)
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April 21, 2013 5:18:28 PM

JJ1217 said:
Yeah I got that one originally but it asploded in a day :/  I then went for a Seasonic 850Watt which was crappy and loud as hell (fan would go to 100% at 200W load)


You my friend, have had bad luck with power supplies.
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April 21, 2013 5:43:14 PM

Kjwinden said:
JJ1217 said:
Yeah I got that one originally but it asploded in a day :/  I then went for a Seasonic 850Watt which was crappy and loud as hell (fan would go to 100% at 200W load)


You my friend, have had bad luck with power supplies.


Yeah and now my GS800 which was quiet with one GPU is loud as hell with two -.-, faulty fan bearing... shiiettt. Probably going to go for another ZX850.
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