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PSU Needs

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April 8, 2011 3:15:52 PM

Hello,
I'm building a new PC and I'm trying to calculate my PSU needs. Now I've used a couple of the online calculators like the one Thermaltake provides on their website, but I'm not sure about their results. So I need some help trying to figure that part out.

Here is the makeup of the PC.

CPU: i7 2600k
MB: Asus P8P67 Deluxe
Video: 2x MSI 560Ti
RAM: 2x 4GB Corsair Vengeance 1600 MHz
Cooling: Corsair H70 Watercooling
HDD: 6x SATA2/3 (1 x WD Black, , 3x WD Blue, 2x WD Green)
Other: DVD Burner, 3-4 USB Devices

I'm thinking of using with the Cooler Master Silent Pro Gold 1000W, but according the calculators, I'm going to be needing just over 1000w!
According to some of the guides I read on Tom's, 850w should be enough, so I figured go with a 1000w for some future proofing.

Also, I'm going to be using the Corsair 700D case. I'm little concerned about the size of the case and PSU cable lengths. If anyone has any experience with that, please do share!

Thanks in Advance for Your Assistance!


**Edit/Update: I'm still reading and just read that I'm an idiot and have been looking at Wattage, when I should be looking at Amperage, but either way, the question still stands.

More about : psu

April 8, 2011 3:57:02 PM

850W with good amp should be enough. Just make sure they have high amps on the 12 rails since you're running two gpus.

Go for Single Rail. 1+ is fine if the brand is good.

If i had your build i woulda bought a Corsair 1000W. Good amp on both rails.

Futureproof and good for overclocking stability.
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a b ) Power supply
April 8, 2011 7:00:47 PM

even 750 will be more then enough

look for something from xfx,seasonic,corsair,antec,enermax,silverstone
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a c 91 ) Power supply
April 9, 2011 7:53:49 PM

My personal opinion on the Corsair 700D is that it is not so good when it comes to air cooling.. Better check on that.. As for the PSU, you won't need more than a good 650W power supply to handle your rig even considering a healthy amount of overclock on the CPU.. Thus, getting a good 850W PSU will provide enough wattage for now and future.. You can select the Corsair HX 850W for that.. Another option is the XFX Black Edition 850W..
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April 9, 2011 9:54:21 PM

Thanks for the answers peeps. Very helpful.

Very interested in the Corsair HX 1000W as there are some really good reviews on it.
I have an Antec Quattro 850W laying around right now and it's still working fine. Being that it's an older PSU, would there any problems with it running new videocards like the dual 560 Ti, Sandybridge chipset & the i7 2600k?

@ Emperus - Reviews have said that the cooling should be fine, especially being that I'm watercooling - Any alternative case suggestions? (FYI, I like classy simple, looking cases!)
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April 11, 2011 11:57:50 PM

No other suggestions?
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a b ) Power supply
April 12, 2011 6:05:15 AM

Corsair hx 1000 is outdated and beaten by cheaper power supplies.and you only really need bout 650-750 watts max
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April 13, 2011 12:48:34 AM

obsidian86 said:
Corsair hx 1000 is outdated and beaten by cheaper power supplies.and you only really need bout 650-750 watts max



Given that you think that the HX 1000 is outdated, do you think the Quattro 850 is outdated also? Or rather, do you think it will give me any problems?
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Best solution

a c 274 ) Power supply
April 13, 2011 12:51:34 AM

An Antec Quattro 850 is more then adequate for your rig.
http://www.guru3d.com/article/geforce-gtx-560-ti-sli-re...
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April 13, 2011 1:32:33 AM

Kick-ass! I officially have a huge smile on my face!

Well I've already ordered the motherboard, ram, cpu and watercooler. Just need the case and I'm rocking and rolling!
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a c 91 ) Power supply
April 13, 2011 4:02:25 AM

My initial thought was you relying on air cooling with the 700D.. For water cooled setups, the Obsidians are perhaps the best cases in the market.. So no problems with the case now..
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April 13, 2011 4:33:31 AM

Emperus said:
My initial thought was you relying on air cooling with the 700D.. For water cooled setups, the Obsidians are perhaps the best cases in the market.. So no problems with the case now..



I've decided to go with the 800D instead. I didn't think saving $20 and losing the hot swaps made musch sense.
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April 20, 2011 12:31:55 AM

Best answer selected by aviavy.
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