Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 780 DirectCU II OC Edition GeForce GTX 660 Ti 3-way SLI
Cyberpunk 2077 25% 7%
Hitman 3 63% 20%
Resident Evil 8 25% 7%
Assassins Creed: Valhalla 15% 15%
FIFA 21 37% 53%
Grand Theft Auto VI 77% 30%
Call of Duty: Black Ops Cold War 11% 18%
Genshin Impact 25% 7%
Far Cry 6 82% 34%
The Medium 57% 16%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 Ti 3-way SLI are significantly better than the Nvidia GeForce GTX 780 DirectCU II OC Edition.

The GTX 660 Ti has a 26 MHz higher core clock speed and 144 more Texture Mapping Units than the GTX 780. This results in the GTX 660 Ti providing 136.7 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 660 Ti has a 26 MHz higher core clock speed and 24 more Render Output Units than the GTX 780. This results in the GTX 660 Ti providing 23.2 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 780 was released less than a year after the GTX 660 Ti, and so they are likely to have similar driver support for optimizing performance when running the latest games.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The GTX 660 Ti has 3072 MB more video memory than the GTX 780, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 660 Ti also has superior memory performance overall.

The GTX 660 Ti has 144.2 GB/sec greater memory bandwidth than the GTX 780, which means that the memory performance of the GTX 660 Ti is massively better than the GTX 780.

The GeForce GTX 780 DirectCU II OC Edition has 2304 Shader Processing Units and the GeForce GTX 660 Ti 3-way SLI has 4032. However, the actual shader performance of the GTX 780 is 2078 and the actual shader performance of the GTX 660 Ti is 3951. The GTX 660 Ti having 1873 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 Ti delivers a massively smoother and more efficient experience when processing graphical data than the GTX 780.

The GeForce GTX 660 Ti 3-way SLI requires 450 Watts to run but there is no entry for the GTX 780. We would recommend a PSU with at least 600 Watts for the GTX 780.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed889 MHzvs915 MHz
Boost Clock902 MHzvs980 MHz
ArchitectureKepler GK110-300-A1Kepler GK104-200-KD-A2 (x3)
OC Potential Fair vs Good
Driver Support Good vs Good
Release Date01 Jul 2013vs01 Aug 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
vs green tick
green tick vs -
green tick vs -

GPU Memory

Memory3072 MBvs6144 MB
Memory Speed1502 MHzvs1502 MHz
Memory Bus384 Bitvs576 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth288.4GB/secvs432.6GB/sec
L2 Cache 1536 KB green tick vs 1152 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units2304vs4032
Actual Shader Performance100%vs100%
Texture Mapping Units192vs336
Texture Rate170.7 GTexel/svs307.4 GTexel/s
Render Output Units48vs72
Pixel Rate42.7 GPixel/svs65.9 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs0
HDMI Connections1vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power-450 Watts
Recommended PSU600 Watts-

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-4770K 4-Core 3.5GHzvsIntel Core i5-3570K 3.4GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution2560x1440vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 780 DirectCU II OC Edition is a special edition of the high-end GeForce GTX 780.
This edition comes with a custom dual fan cooling solution which by itself should allow a slight performance boost, as GeForce GTX 780 benefits from the GPU Boost 2.0 technology.
Also, it has been overclocked out of the box from 863MHz to 954MHz while its boost clock is now of 1006MHz. The memory clock was left untouched.
Benchmarks indicate a 3.5% performance boost when compared to the reference card.
GeForce GTX 660 Ti 3-way SLI is a solution of three GeForce GTX 660 Ti put together using NVIDIA'S SLI technology.
Check the page of GeForce GTX 660 Ti to know more about its chip.
As usual, SLI relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is up to X% better than a single GeForce GTX 660 Ti performing by itself but at times (depending whether or not the 3D game supports SLI or in the graphics driver) it performed worse than a single GeForce GTX 660 Ti. Expect this combination to draw up to 450 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Recommended CPU
Possible GPU Upgrades
GPU Variants