Do I Need a new PSU

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Phlash1

Honorable
Jan 9, 2014
17
0
10,510
I want to add another physical hard drive to my PC, probably a 2 or 3 TB. However I am not sure if my power supply can handle it. My build is below. Thought?

Also, what PSU would I need to upgrade if I want to go SLI with 2 770s? Is it worth going SLI (what benefits would I see)? You guys are the best and always have the answers. Thanks for the help.

CPU = i7-4770K 3.5GHz Quad Core
Cooler = Coller Master Hyper 212 EVO 82.9 CFM
Motherboard = ASRock Z87 Extreme4 ATX LGA1150
Memory = G.Skill Ares Series 16GB (2x8GB) DDR3
Storage = Kingston Hyper X 3K 120 KB 2.5" SSD
Storage = Western Digital Caviar Blue 1TB 3.5" 7200RPM
Video Card = EVGA GeForce GTX 770 4GB
Sound Card = Asus Xonar DGX 24-bit 96KHz
Case = Corsair 500R Black ATX Mid Tower
Power Supply = SeaSonic M1211 650w 80+
Optical Drive = Samsung SH-224DB/BEBE DVD/CD Writer
OS = Windows 7 Home Premium SP1 (OEM)(64-bit)
 
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Suztera

Polypheme
Mar 18, 2014
12,730
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60,960
Yes you will. You want 750W for GTX 770 SLI.
Running GTX 770 SLI is simply trying to get more perofrmance from two GTX 770. It doesn't mean you will get twice the performance of a GTX 770. A GTX SLI will beat a GTX 780Ti when it works.
However, not all games support SLI but most modern AAA titles will.
You will consume a lot more power than a single gpu and have a higher heat output and can be noisy.
Games may have bad SLI scaling so performance of GTX 770 SLI isn't a lot from a single GTX 770.
You can only SLI with the same gpus. Example, you can only SLI GTX 770 with other brands of GTX 770.
The cards will run with the lowest speed of both cards.
Your Vram is not doubled.
Having a GTX 770 4GB and a GTX 770 2GB will make a 2GB GTX 770 SLI.
 
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