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What kind of performance increase would I get if I sli my EVGA GeForce GTX 780?

Pugs501
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My Specs:

 
CPU: Intel Xeon E3-1231 V3 3.4GHz Quad-Core Processor  ($248.98 @ SuperBiiz) 
Motherboard: MSI Z97-G55 SLI ATX LGA1150 Motherboard  ($116.99 @ Amazon) 
Video Card: EVGA GeForce GTX 780 3GB Superclocked ACX Video Card  ($399.99 @ Newegg) 
Case: Corsair 200R ATX Mid Tower Case  ($38.98 @ NCIX US) 
Total: $1071.88
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-14 09:56 EDT-0400
 
Uses- SFM, 3D Modeling/Mapping/Texturing, and mild gaming.
I am still in the stage of getting the components.  Crossed out ones are parts I have.

Because he had a hard drive.

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For gaming

 

Generally anywhere from 0 - 100% extra performance

But on average like 50/60% performance improvements,

 

For rendering, depends if the program supports mutli gpus, if so then rendering will be faster

Desktop - Corsair 300r i7 4770k H100i MSI 780ti 16GB Vengeance Pro 2400mhz Crucial MX100 512gb Samsung Evo 250gb 2 TB WD Green, AOC Q2770PQU 1440p 27" monitor Laptop Clevo W110er - 11.6" 768p, i5 3230m, 650m GT 2gb, OCZ vertex 4 256gb,  4gb ram, Server: Fractal Define Mini, MSI Z78-G43, Intel G3220, 8GB Corsair Vengeance, 4x 3tb WD Reds in Raid 10, Phone Oppo Reno 10x 256gb , Camera Sony A7iii

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Well, first off, you have a 780, not a 780ti. 

 

Also, it will depend on the game. Some don't support SLI at all and others will scale at 95%. In general I'd expect around 70% scaling on average. 

 

You'll also need a bigger PSU. I'd go for 850w to be safe with overclocking. 

 

EDIT: This is for gaming, not too familiar with SLI for rendering and such. 

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for anything that supports SLI you should get at least a 60% gain in performance.

 

If anything doesnt support SLI, or doesnt support it well you will see little to no gain. It all depends on if the software plays nice or not

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Well, first off, you have a 780, not a 780ti. 

Fixed it, thanks

Because he had a hard drive.

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about a 70-80% increase in most games, rendering it should be closer to 100% increase

My Rig  

 
PCPartPicker part list: http://ca.pcpartpicker.com/p/kGNksY

 

CPU: Intel Core i7-4770 3.4GHz Quad-Core Processor  ($379.00 @ shopRBC) 

CPU Cooler: RAIJINTEK THEMIS 65.7 CFM Sleeve Bearing CPU Cooler  ($34.99 @ NCIX) 

Motherboard: MSI CSM-H87M-G43 Micro ATX LGA1150 Motherboard  ($78.83 @ DirectCanada) 

Memory: Kingston HyperX 16GB (4 x 4GB) DDR3-1600 Memory  ($139.99 @ Memory Express) 

Storage: Kingston Fury 120GB 2.5" Solid State Drive  ($71.34 @ DirectCanada) 

Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive  ($92.95 @ Vuugo) 

Video Card: Gigabyte Radeon R9 280X 3GB Video Card  ($298.98 @ Newegg Canada) 

Case: Fractal Design Define R4 w/Window (Black Pearl) ATX Mid Tower Case  ($125.98 @ Newegg Canada) 

Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply  ($66.99 @ NCIX) 

Operating System: Microsoft Windows 8.1 - 64-bit (OEM) (64-bit)  ($116.00 @ shopRBC) 

Case Fan: Cougar Turbine 120 (4-Pack) 60.4 CFM 120mm  Fans  ($23.99 @ NCIX) 

Monitor: HP 22xi 60Hz 21.5" Monitor  ($187.11 @ Amazon Canada) 

Monitor: HP 22xi 60Hz 21.5" Monitor  ($187.11 @ Amazon Canada) 

Keyboard: Logitech G710 Wired Gaming Keyboard  ($114.99 @ NCIX) 

Mouse: Razer DeathAdder 2013 Wired Optical Mouse  ($76.99 @ Amazon Canada) 

Headphones: Kingston HyperX Cloud Pro Headset  ($78.98 @ DirectCanada) 

Total: $2074.22

Prices include shipping, taxes, and discounts when availableGenerated by PCPartPicker 2015-04-10 15:33 EDT-0400Build log http://linustechtips.com/main/topic/303263-the-dell-from-hell/#entry4121100 

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Nothing to do with the topic at all, but how the heck have you posted 1,080 times in 2 months?

He posts a lot

Dq8TplT.jpg

Someone told Luke and Linus at CES 2017 to "Unban the legend known as Jerakl" and that's about all I've got going for me.

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post-14986-0-01037400-1413296703.jpg

http://www.anandtech.com/bench/product/1063?vs=1036


I hope that this answers that question of yours. :)

@Pugs501

ON A 7 MONTH BREAK FROM THESE LTT FORUMS. WILL BE BACK ON NOVEMBER 5th.


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