Is 750w Corsair psu enough?

[smokey197]

This is what I, planning on getting but i will only start out with 4 gb of ram and 1 hd 4890.

ASUS M4A79T Deluxe AM3 DDR3 AMD 790FX ATX AMD Motherboard
Amd Phenom x4 955
8gb ddr3 1600
2x Ati HD 4890's
1 7200 rpm hdd
dvdrw drive
3x 230mm fans
1x 140mm fan

So will the 750 watt Corsair psu work?

 

[abhijith]

Yes it will be more than enough. AMD says that you need 600W or greater power supply with 4 6pin power connectors.

 

[gkay09]

^+1
It is more than sufffice...

 

[cjl]

It will work fine. The only time you need more than a good quality 750 is if you're running something ridiculous, like an overclocked i7 and quadfire or something similar.

 

[Bluescreendeath]

A quality 750watt PSU can handle 2x4870s or 2xGTX260s

But 2x4890s consume more power than either, and he has a quad core, so he will be cutting it close.

It will work fine. The only time you need more than a good quality 750 is if you're running something ridiculous, like an overclocked i7 and quadfire or something similar.

Umm, if you're running an i7 + quadfire, then you should get a 1200watt PSU.

 

[robertomad]

Can it handle 2x GTX 285?

 

[Bluescreendeath]

Can it handle 2x GTX 285?

No. You'll need a good 800+ watt PSU for 2xGTX285s

 

[mlcloud]

I have the 750w corsair tx, and I bought it anticipating another 4890 on my q9550 building. According to calculations done online, we *should* have a relative safe margin even after the crossfire, but capacitor aging and peak usage values might change that.

 

[MacSH]

FYI, Thermaltake has a very good psu calculator built into their website. When doing your own calculations, please remember that psu's are generally most efficient at 50% load.

A rough wattage based on your build from the above calculator is 640w. From that, your 750 will handle it, but would run under greater load & therefore hotter, which reduces component life.

Take from this what you will.

Cheers

 

[JohnnyLucky]

Here is a link to a technical review of the Corsair TX750 over at jonnyguru.com:

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=73

 

[smokey197]

Ah, its so hard to decide lol.

 

[smokey197]

I think i might just go with the corsair 850 Watt its not too much more expensive. Would this be the safer way out?

 

[XMSYellowbeard]

The 850 is a solid choice. You should also plug your system into our PSU Finder:

http://www.corsairmemory.com/psufinder/default.aspx

 

[JohnnyLucky]

Here's a link to a technical review of the Corsair TX850 over at jonnyguru.com:

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=126

It's a rock solid unit.

 

[cjl]

A quality 750watt PSU can handle 2x4870s or 2xGTX260s

But 2x4890s consume more power than either, and he has a quad core, so he will be cutting it close.




Umm, if you're running an i7 + quadfire, then you should get a 1200watt PSU.

Umm, I have an i7 + quadfire (2x 4870x2), and I'm running on a Corsair HX1000W. It works perfectly. In fact, I'm not even that close to full load on the 1000 - the highest load that I've measured (when I was trying to load everything as much as possible) was 910 watts at the wall, which is actually only 775 watts or so being pulled by the components. In theory, the Corsair 850 would run my setup just fine, although I wouldn't try that (it would be cutting it quite close).

The Corsair 750 will work perfectly for 2 4890s. Definitely not cutting it close, unless there is a LOT of other stuff in the computer (like 10 hard drives).

 

[smokey197]

I also plan on doing some overclocking. Would the 850 be better for that?

 

[cjl]

Honestly, either would work just fine. The 750 would easily be adequate, but the 850 would work perfectly as well if you wanted to get that one.

 

[MacSH]

If you are willing to spend a lil bit more $, I would recommend checking out Enermax REVOLUTION85+ series. These things are the most efficient (that I've found) and therefore cool and quiet. Absolutely rock solid and all of the pro testers (that I read) love 'em.

 

[kicon_98]

I tried to build a system i7 core with 2 1 tb harddrives, and saphire vapor cool 4890 but it is not bootup at all. Is this because not enough power?

 

[cjl]

If it won't even post, power probably isn't your problem (unless you plugged something in wrong).

 

[theAnimal]

A quality 750watt PSU can handle 2x4870s or 2xGTX260s

Or 2x GTX275 or GTX280 or GTX285 or HD4890.

But 2x4890s consume more power than either

HD4890 is about the same as 4870, actually less according to xbitlabs.

and he has a quad core, so he will be cutting it close.

Even if his quad core somehow used 200W, he'd still be okay.

 

[slong]

im getting 2x gtx 275's and ill be running a oc 17 920, what psu should i get? i heard the 750 cosair cant handle oc 17 and 2x 275's so figured i might need to upgrade

 

[cjl]

Sure it can. My OC i7 and pair of 4870x2s only uses around 800W peak. You should be fine.

 

[mlcloud]

I don't know where people throw up the falsities that claim PSUs are weaker than they really are. Sure, if you're getting some no-name, generic PSU at 400w for an i7 system with crossfire/SLI, I'd hit someone too. But a 750w PSU from Corsair is one helluva piece of equipment. That's *a lot* of power. And people undermine that strength and claim you need 1kw+ for some dual-GPU, multi-harddrive system.