750w or 1050w?

[R3ZAA]

Hey guys, right now there is a sale for Corsair HX1050 for $179 AUD, that's $100 off!
Before I knew of this sale, I was planning on getting a Corsair HX750 V2 (80+ Gold efficiency) for $199

Should I spend the extra money on the 750w, or save some cash and get the 1050?

Here are the specs:
CASE: CoolerMaster Storm Enforcer

MOBO: Gigabyte GA-Z77X-UD3H-WB WIFI Motherboard

CPU: Intel i7-3770k

GPU: Sapphire 2GB 7850 OC

Optic Drive: LG GH24NS90 24x SATA DVD-RW Drive OEM

HDD: Seagate 3.5" Barracuda 2TB ST2000DM001

SSD: Intel 330 Series 120GB SSD

RAM: G.Skill Ripjaws X F3-1600C9D-16GXM 16GB

CPU COOLER: CoolerMaster Hyper 212 EVO

Card/R: Shintaro Internal Card Reader 3.5" (PCCG) $15

Obviously the 1050w is overkill, but at the price it is now, isn't worth it so I have headroom for future upgrades?

Thanks guys!

 

[bigcyco1]

If you can get the 1050 cheaper then get it that's way overkill though lol

 

[R3ZAA]

Can too much power be bad for the system?

 

[olivierhacking]

Can too much power be bad for the system?

A higher wattage PSU does not mean a higher amount of power being drawn. The amount of power drawn is based purely on your components, whether they are overclocked or not etc.
A higher wattage PSU gives you more headroom for upgrades (so you are more future-proof) and it will have less load then a 750w which means it will likely run quieter and last longer.
So, get the 1050w PSU!

 

[geekapproved]

A 750w is overkill even with crossfire 7850's, but if the 1050 is Gold rated too, and cheaper, then go for it.

 

[JKatwyopc]

Too much pwoer is not bad for you system because the components will only draw as much as they need. Therefore, if your computer requires 600 Watts, you will be using 600W of the available 1050W. However, the 1050W power supply itself may draw a little more electricity from the mains which would have an effect on your power bill. Both of the power supplies you listed are Gold rated so the efficiency is very good. Personnally, I would get the 750W supply but its up to you.

 

[geofelt]

Can too much power be bad for the system?

No.

A psu will consume only the power that is demanded of it, regardless of it's maximum rating.

A psu will operate most efficiently in the middle third of it's range.
One negative of a grossly overpowered psu is that it will loaf and be somewhat inefficient.

A second negative in this case is that the HX1050 will be a long psu, some 2" longer.

Even if you are planning on 7850 crossfire, you would only need a 600w psu, so your costs still might be less than that HX1050.

 

[R3ZAA]

No.

A psu will consume only the power that is demanded of it, regardless of it's maximum rating.

A psu will operate most efficiently in the middle third of it's range.
One negative of a grossly overpowered psu is that it will loaf and be somewhat inefficient.

A second negative in this case is that the HX1050 will be a long psu, some 2" longer.

Even if you are planning on 7850 crossfire, you would only need a 600w psu, so your costs still might be less than that HX1050.

Oh! Thanks!
So you're saying that in the long run, a 750w would be much cheaper?
I'm also planning on getting a water cooling system for my CPU, GPU, chipset and maybe ram plus the 7850 crossfire.
Would the 750w still support this?

 

[JKatwyopc]

Yes it will. Look at my sig (bottom of the post). I am running similar config with my system and 750W handles if great. If you need confirmation go here http://extreme.outervision.com/psucalculatorlite.jsp and use it to calculate your power usage. Be sure to account for your planned config not what you can afford right now.

 

[geofelt]

Oh! Thanks!
So you're saying that in the long run, a 750w would be much cheaper?
I'm also planning on getting a water cooling system for my CPU, GPU, chipset and maybe ram plus the 7850 crossfire.
Would the 750w still support this?

No, a 750w psu will not necessarily be cheaper. I am only saying that all you might ever need is 750w, and usually, such a psu will be cheaper.
But, in this case since the HX1050 is actually cheaper, go with it.

But I do take issue with planning on a water cooling system.
Today's top air coolers like the noctua NH-D14 or phanteks are very good. In a well ventilated case, like yours, they will be just as efficient as the all-in-one liquid coolers.
And, they are less expensive, quieter, and more reliable.

The main reason for liquid cooling is to be able to overclock your parts higher.
My take is to spend those cooling funds on stronger parts to begin with.

 

[R3ZAA]

Yes it will. Look at my sig (bottom of the post). I am running similar config with my system and 750W handles if great. If you need confirmation go here http://extreme.outervision.com/psucalculatorlite.jsp and use it to calculate your power usage. Be sure to account for your planned config not what you can afford right now.

Wow Thanks! That cleared a lot up!
I got a rating of 511w. Is your PSU running under a lot of pressure or is it working very efficiently?

 

[JKatwyopc]

My system uses about 75-100w more but it runs very stable. I would suggest that you add about 15-20% to the max suggestion that PSU calculator reccommends just for safety margin so you can add a little more hardware if necessary.

 

[R3ZAA]

No, a 750w psu will not necessarily be cheaper. I am only saying that all you might ever need is 750w, and usually, such a psu will be cheaper.
But, in this case since the HX1050 is actually cheaper, go with it.

But I do take issue with planning on a water cooling system.
Today's top air coolers like the noctua NH-D14 or phanteks are very good. In a well ventilated case, like yours, they will be just as efficient as the all-in-one liquid coolers.
And, they are less expensive, quieter, and more reliable.

The main reason for liquid cooling is to be able to overclock your parts higher.
My take is to spend those cooling funds on stronger parts to begin with.

Hahaha the main reasons I wanted a water cooled system was because it runs the components cooler and it looks awesome!
However I may stick with the 750w considering that the 1050 may run less efficiently since it's running under the middle area of its range.

 

[R3ZAA]

My system uses about 75-100w more but it runs very stable. I would suggest that you add about 15-20% to the max suggestion that PSU calculator reccommends just for safety margin so you can add a little more hardware if necessary.

In that case, I probably will stick with the 750w PSU. Thanks for help!

 

[R3ZAA]

Best answer selected by R3ZAA.

 

[Mousemonkey]

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