850W PSU enough for SLI EVGA SC GTX 770s?

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XGamer95

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I currently have a single EVGA 2GB GTX 770 SC and a 650W Cooler Master PSU. I'm getting a second 770 and I'm not sure if 850 watts will be enough to power two of them. I'm currently interested in this PC Power & Cooling power supply as it is on sale for $100 after rebate for Black Friday. I have also heard that this brand is very reliable and high quality.
 

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Windows 7 Ultimate 64-bitIntel Core i5-3570k @ 3.4GHz (OC to 4.0 GHz T...ADATA XPG Gaming Series 8GB DDR3 1600MHz (2x4GB)2x EVGA GTX 770 2GB Superclocked w/ ACX Cooling
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PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Ultimate 64-bit
CPU
Intel Core i5-3570k @ 3.4GHz (OC to 4.0 GHz Turbo Boost)
Motherboard
MSI Z77A-G45 LGA 1155 Intel Z77 ATX
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ADATA XPG Gaming Series 8GB DDR3 1600MHz (2x4GB)
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2x EVGA GTX 770 2GB Superclocked w/ ACX Cooling
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On Board
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1x ASUS VG248QE 24" 144Hz 1ms LED-LCD 3D Ready
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PSU
EVGA Supernova 1000 P2 1000W Fully Modular Platinum Rated
Case
Rosewill Thor V2 White Full Tower
Cooling
CM Hyper 212 EVO (Push); 2x Intake 2x Exhaust Fans
Keyboard
Tt eSports Poseidon Cherry MX Brown Mechanical Keyboard
Mouse
A4Tech X7 F5 Wired Laser Mouse
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120 Mbps down, 40 Mbps up
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MSE, Malwarebyte's Anti-Malware Premium
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Google Chrome
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ASUS RT-N66U Dual-band N900 Gigabit Router;
Netgear WNDA4100 Dual-band N900 USB Adapter

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Windows 7 Professional 32-bit/Windows 8 64-bi...Intel Core 2 Quad Q6600/Intel Core i7 4790/In...2GB/16GB/4GBIntel G33/G31 Express(Vostro)/NVIDIA GeForce ...
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Dell Vostro 400/Dell XPS 8700(Slightly Customized for me by Dell)/Toshiba Satellite T135
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Windows 7 Professional 32-bit/Windows 8 64-bit/Win7 Pro64-bit
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Intel Core 2 Quad Q6600/Intel Core i7 4790/Intel Pentium
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2GB/16GB/4GB
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Intel G33/G31 Express(Vostro)/NVIDIA GeForce GTX 745(XPS)
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HP 2009m(Vostro)/ViewSonic VX2250wm-LED(XPS)
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1600x900(Vostro)/1920x1080(XPS)
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Seagate ST3160815AS(Vostro)/Western Digital Blue(Satellite)
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Western Digital My Passport 0748
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Dell L100)(Vostro)/Dell KB2133p(XPS)
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Dell M-UAV-DEL8(XPS)
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100 Mbit/s(Only when IPTV is plugged out)
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Avast, Malwarebytes PRO
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Internet Explorer 11
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Note: Names with slashes between two different parts mean that the left is my old desktop and the right is my old laptop and the middle is my new desktop.(Unless specified)
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New laptop:LG Gram(Not available in US) Processor:Intel Core i3 4th Gen Ultra Low Power RAM:4GB Hard Drive:SK Hynix OEM MSATA or M.2 Graphics:Intel HD
I've used a few PC Power & Cooling PSU's and all of them were great. 850 watts is plenty for dual 770's, and that PSU has 70A on the 12v rail. Other brands to consider are SeaSonic, Corsair, and Antec. You can see if there are any good deals on those as well and if there aren't, then go with what you have picked out.
 

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Windows 7 Professional 64bit SP1Intel Core i5-3570K @ 4.5GHzCorsair Vengeance 16GB (4x4) @1866MHz CL 9-9-...EVGA GTX 750 Ti FTW
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Built
OS
Windows 7 Professional 64bit SP1
CPU
Intel Core i5-3570K @ 4.5GHz
Motherboard
Asus Sabertooth Z77
Memory
Corsair Vengeance 16GB (4x4) @1866MHz CL 9-9-9-24 1T
Graphics Card(s)
EVGA GTX 750 Ti FTW
Sound Card
Onboard Audio
Monitor(s) Displays
Dell S2309W
Screen Resolution
1920x1080
Hard Drives
Samsung 830 128GB SSD - OS
(4) Seagate 5TB HDD
(1) Seagate 2TB HDD
PSU
Seasonic X750 80+ Gold Full Modular
Case
Antec Eleven Hundred Super Mid Tower
Cooling
Intel Liquid Cooler
Keyboard
Max Nighthawk X8 Mechanical keyboard
Mouse
Mionix Naos 7000
Internet Speed
50 Mbps Down / 10 Mbps Up
Antivirus
Microsoft Security Essentials/Malwarebytes Anti-Malware
Browser
Chrome/Firefox
Other Info
Klipsch ProMedia 2.1's
Asus RT-N66R Wireless Router
Nice looking PSU you picked out :) 850 watts will be plenty.

Make sure you check out the warranty thoroughly, and read up on the reviews before you make a purchase.
 

My Computer My Computer

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Windows 10 Pro x64Intel Core i7 6700KGSkill TridentZ RGB 16GB 3600 16-16-16-36EVGA GTX 980 Ti SC x2
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Skylake Special #666
OS
Windows 10 Pro x64
CPU
Intel Core i7 6700K
Motherboard
Asus Sabertooth Z170 Mark 1
Memory
GSkill TridentZ RGB 16GB 3600 16-16-16-36
Graphics Card(s)
EVGA GTX 980 Ti SC x2
Sound Card
Realtek High Definition
Monitor(s) Displays
AOC G2460PG
Screen Resolution
1920 x 1080 144Hz
Hard Drives
Samsung 860 Pro 256GB, Seagate Barracuda 4TB x2
PSU
EVGA 1000 P2, EVGA White Custom Braided Cables
Case
Corsair Vengeance C70 Gunmetal Black
Cooling
Corsair H100i v2, Corsair ML120 x2, Thermal Grizzly Kryonaut
Keyboard
Logitech G910 Orion Spectrum
Mouse
Logitech G700s
Internet Speed
Verizon Fios Quantum Gateway 75/75
Antivirus
Windows Defender, Malwarebytes Free 3.8.3
Browser
Chrome
Other Info
Corsair SP120 x4, LG Blu-ray Drive, Durabrand HT-395 100 Watt Dolby Digital Amp, Corsair H2100 Wireless 7.1 Headset
That's a killer PSU it should work like a dream ;)
 

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Windows 10 Home Premium 64bit sp1Intel I7-6700K @ 4.6 Ghz 1.344 volts everyday OC32GB G-Skill TridentZ 3200mhz 16-18-18-38 DDR4Sli Gigabyte Windforce GTX 980 G1
Computer type
PC/Desktop
Computer Manufacturer/Model Number
CoreI7-6700K MrFingerIII Special Builds
OS
Windows 10 Home Premium 64bit sp1
CPU
Intel I7-6700K @ 4.6 Ghz 1.344 volts everyday OC
Motherboard
Asrock Fatality K6 Z170 Socket 1151
Memory
32GB G-Skill TridentZ 3200mhz 16-18-18-38 DDR4
Graphics Card(s)
Sli Gigabyte Windforce GTX 980 G1
Sound Card
AC97 Creative Rage Tactic 3D Headphones Bluetooth
Monitor(s) Displays
27" Asus ROG Swift PG278Q G-Sync 48" Vizio Smart HD TV
Screen Resolution
2560x1440p 27"- 48" Currently Gaming at 2560x1440p Res 2K
Hard Drives
250GB Samsung Evo840SSD Seagate baracuda 500 GB WD Mybook 500Gb 1TB Seagate Barracuda
PSU
HX1050w Corsair Silver 80plus certified crosfire/sli
Case
Enthod Pro Full Tower
Cooling
Corsair H110i GT 280 mm High Performance WaterBlock
Keyboard
Logitech wireless keyboard
Mouse
Logitech wireless mouse
Internet Speed
Cox Cable 100+ mb
Antivirus
WebRoot Spysweeper with Antivirus
Browser
IE-10, Chrome, Opera
Other Info
My Other Rig is a AMD FX8320E @4.6Ghz 16GB Ballistic Sport Ram
Mobo Asrock Fatality 990FX 120GB OCZ SSD 1TB Seagate Barracuda Corsair H75 Cooling PSU Corsair CX750
GPU GTX Gigabyte 970G1
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