Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 660 1.5GB (OEM) GeForce GTX 780
Cyberpunk 2077 131% 30%
Hitman 3 200% 69%
Assassins Creed: Valhalla 111% 19%
Resident Evil 8 131% 30%
FIFA 21 16% 34%
Grand Theft Auto VI 224% 83%
Call of Duty: Black Ops Cold War 104% 15%
Genshin Impact 131% 30%
The Medium 188% 62%
Far Cry 6 234% 88%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 780 are significantly better than the Nvidia GeForce GTX 660 1.5GB (OEM).

The GeForce GTX 780 has a 40 MHz higher core clock speed and 96 more Texture Mapping Units than the GTX 660. This results in the GeForce GTX 780 providing 86.7 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 GeForce GTX 780 has a 40 MHz higher core clock speed and 24 more Render Output Units than the GTX 660. This results in the GeForce GTX 780 providing 21.6 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 GeForce GTX 780 was released less than a year after the GTX 660, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GeForce GTX 780 has 1536 MB more video memory than the GTX 660, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GeForce GTX 780 also has superior memory performance overall.

The GeForce GTX 780 has 154 GB/sec greater memory bandwidth than the GTX 660, which means that the memory performance of the GeForce GTX 780 is massively better than the GTX 660.

The GeForce GTX 660 1.5GB (OEM) has 1152 Shader Processing Units and the GeForce GTX 780 has 2304. However, the actual shader performance of the GTX 660 is 1023 and the actual shader performance of the GeForce GTX 780 is 2078. The GeForce GTX 780 having 1055 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce GTX 780 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 660.

The GeForce GTX 660 1.5GB (OEM) requires 130 Watts to run and the GeForce GTX 780 requires 250 Watts. We would recommend a PSU with at least 450 Watts for the GTX 660 and a PSU with at least 600 Watts for the GeForce GTX 780. The GeForce GTX 780 requires 120 Watts more than the GTX 660 to run. The difference is significant enough that the GeForce GTX 780 may have an adverse affect on your yearly electricity bills in comparison to the GTX 660.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed823 MHzvs863 MHz
Boost Clock888 MHzvs902 MHz
ArchitectureKepler GK104-200-KD-A2Kepler GK110-300-A1
OC Potential Good vs Fair
Driver Support Good vs Good
Release Date22 Aug 2012vs23 May 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
10
green tick vs green tick
10
1600x900
8.9
vs green tick
10
1920x1080
7
vs green tick
9.3
2560x1440
5.1
vs green tick
6.8
3840x2160
3.4
vs green tick
5.2

GPU Memory

Memory1536 MBvs3072 MB
Memory Speed1400 MHzvs1502 MHz
Memory Bus192 Bitvs384 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth134.4GB/secvs288.4GB/sec
L2 Cache 384 KB vs green tick 1536 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units1152vs2304
Actual Shader Performance49%vs100%
Technology28nmvs28nm
Texture Mapping Units96vs192
Texture Rate79 GTexel/svs165.7 GTexel/s
Render Output Units24vs48
Pixel Rate19.8 GPixel/svs41.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power130 Wattsvs250 Watts
Recommended PSU450 Watts & 30 Ampsvs600 Watts & 42 Amps

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.5vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3470 3.2GHzvsIntel Core i7-4770K 4-Core 3.5GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs2560x1440

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 660 1.5GB (OEM) is a high-end Graphics Card based on the 28nm, Kepler architecture.

It offers the GK104-200-KD-A2 GPU which features 1152 Shader Processing Units, 96 TMUs and 24 ROPs, on a 192-bit memory interface of fast GDDR5.
While the central unit runs at 823MHz and goes up to 888MHz, in turbo mode, the memory clock operates at 1400MHz.

It is an OEM card that despite the core differences, performs similar to the retail version.
GeForce GTX 780 is a high-end graphics-card based on the 28nm, Kepler architecture.
It's based on the Kepler GK110 Core (same used on Titan) but with 12 SMX activated and therefore offers 2304 Shader Processing Units, 192 TMUs and 48 ROPs on a 384-bit memory interface of fast GDDR5. While the central unit runs at 863MHz and goes up to 902MHz in Turbo, the memory clock operates at 1502MHz. It consumes up to 250W.
Benchmarks indicate that its performance is up to 30% better than previous GeForce GTX 680 and thus allows even the most demanding games to be playable at the highest settings, at 1080p. With proper overclocking and cooling, it can surpass GeForce GTX Titan.
Recommended CPU
Possible GPU Upgrades
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GPU Variants
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