Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 660 SLI GeForce GTX 670 PNY 2GB Edition
Red Dead Redemption 2 27% 65%
Halo: Reach 60% 48%
Cyberpunk 2077 75% 126%
Call of Duty: Modern Warfare 27% 65%
Doom Eternal 9% 42%
Microsoft Flight Simulator 75% 126%
Warcraft 3: Reforged 95% 94%
Grand Theft Auto VI 94% 152%
Star Wars: Jedi - Fallen Order 75% 126%
Dragon Ball Z Kakarot 22% 2%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 SLI are noticeably better than the Nvidia GeForce GTX 670 PNY 2GB Edition.

The GTX 660 has a 65 MHz higher core clock speed and 48 more Texture Mapping Units than the GTX 670. This results in the GTX 660 providing 54.3 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 has a 65 MHz higher core clock speed and 16 more Render Output Units than the GTX 670. This results in the GTX 660 providing 17.7 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 660 was released less than a year after the GTX 670, 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 has 2048 MB more video memory than the GTX 670, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 660 also has superior memory performance overall.

The GTX 660 has 96.1 GB/sec greater memory bandwidth than the GTX 670, which means that the memory performance of the GTX 660 is massively better than the GTX 670.

The GeForce GTX 660 SLI has 1920 Shader Processing Units and the GeForce GTX 670 PNY 2GB Edition has 1344. However, the actual shader performance of the GTX 660 is 1983 and the actual shader performance of the GTX 670 is 1317. The GTX 660 having 666 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 670.

The GeForce GTX 660 SLI requires 280 Watts to run and the GeForce GTX 670 PNY 2GB Edition requires 170 Watts. We would recommend a PSU with at least 600 Watts for the GTX 660 and a PSU with at least 500 Watts for the GTX 670. The GTX 660 requires 110 Watts more than the GTX 670 to run. The difference is significant enough that the GTX 660 may have an adverse affect on your yearly electricity bills in comparison to the GTX 670.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed980 MHzvs915 MHz
Boost Clock1033 MHzvs980 MHz
ArchitectureKepler GK106-400-A1 (x2)Kepler GK104-325-A2
OC Potential Poor vs Good
Driver Support Good vs Good
Release Date01 Sep 2012vs01 May 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - vs green tick
10
1920x1080
9.1
green tick vs
8.1
2560x1440 - vs green tick
5.9
3840x2160 - vs green tick
4.3

GPU Memory

Memory4096 MBvs2048 MB
Memory Speed1502 MHzvs1502 MHz
Memory Bus384 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth288.4GB/secvs192.3GB/sec
L2 Cache 768 KB green tick vs 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units1920vs1344
Actual Shader Performance95%vs63%
Technology28nmvs28nm
Texture Mapping Units160vs112
Texture Rate156.8 GTexel/svs102.5 GTexel/s
Render Output Units48vs32
Pixel Rate47 GPixel/svs29.3 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections4vs2
HDMI Connections2vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power280 Wattsvs170 Watts
Recommended PSU600 Wattsvs500 Watts & 30 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-3770K 4-Core 3.5GHzvsIntel Core i5-3570K 3.4GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 660 SLI is a solution of two GeForce GTX 660 put together using NVIDIA'S SLI technology.
SLI relies a lot on proper driver support and may cause micro stuttering in FPS below 30. This means this combination might even perform worse than a single GTX 660.
The optimal performance it delivers is largely better than a single GeForce GTX 680.
Therefore, this combination is sufficient for gaming at 1080p and most demanding games can be played at the highest settings.
GeForce GTX 670 PNY 2GB Edition is a renamed GeForce GTX 670 with no new features - not even a new cooling system. Its performance is exactly like the reference card.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
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