Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 860M 2GB SLI GeForce GTX 660M
Red Dead Redemption 2 51% 435%
Doom Eternal 30% 360%
Cyberpunk 2077 107% 635%
Call of Duty: Modern Warfare 51% 435%
Dragon Ball Z Kakarot 7% 230%
Microsoft Flight Simulator 107% 635%
Star Wars: Jedi - Fallen Order 107% 635%
Grand Theft Auto VI 130% 718%
Need For Speed Heat 51% 435%
Warcraft 3: Reforged 94% 79%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 860M 2GB SLI are massively better than the Nvidia GeForce GTX 660M.

The GTX 860M has a 194 MHz higher core clock speed and 48 more Texture Mapping Units than the GeForce GTX 660M. This results in the GTX 860M providing 55.6 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 860M has a 194 MHz higher core clock speed and 16 more Render Output Units than the GeForce GTX 660M. This results in the GTX 860M providing 19.5 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 860M was released over a year more recently than the GeForce GTX 660M, and so the GTX 860M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce GTX 660M.

The GTX 860M has 2048 MB more video memory than the GeForce GTX 660M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 860M also has superior memory performance overall.

The GTX 860M has 96.4 GB/sec greater memory bandwidth than the GeForce GTX 660M, which means that the memory performance of the GTX 860M is massively better than the GeForce GTX 660M.

The GeForce GTX 860M 2GB SLI has 1280 Shader Processing Units and the GeForce GTX 660M has 384. However, the actual shader performance of the GTX 860M is 1896 and the actual shader performance of the GeForce GTX 660M is 365. The GTX 860M having 1531 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 860M delivers a massively smoother and more efficient experience when processing graphical data than the GeForce GTX 660M.

The GeForce GTX 860M 2GB SLI requires 120 Watts to run and the GeForce GTX 660M requires 50 Watts. The GTX 860M requires 70 Watts more than the GeForce GTX 660M to run. The difference is significant enough that the GTX 860M may have an adverse affect on your yearly electricity bills in comparison to the GeForce GTX 660M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1029 MHzvs835 MHz
Boost Clock1097 MHzvs950 MHz
ArchitectureMaxwell GM107-N15P-GX-A1 (x2)Kepler GK107-N13E-GE-A2
OC Potential Fair vs Poor
Driver Support Great vs Good
Release Date12 Mar 2014vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
10
green tick vs
7.9
1600x900
10
green tick vs
5.9
1920x1080
8.4
green tick vs
4.4
2560x1440
6.1
green tick vs
2.8
3840x2160
4.5
green tick vs
1.8

GPU Memory

Memory4096 MBvs2048 MB
Memory Speed1253 MHzvs1000 MHz
Memory Bus256 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth160.4GB/secvs64GB/sec
L2 Cache 4096 KB green tick vs 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units1280vs384
Actual Shader Performance91%vs18%
Technology28nmvs28nm
Texture Mapping Units80vs32
Texture Rate82.3 GTexel/svs26.7 GTexel/s
Render Output Units32vs16
Pixel Rate32.9 GPixel/svs13.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections0vs-
Comparison

GPU Power Requirements

Max Power120 Wattsvs50 Watts
Recommended PSU--

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-4930MX 4-Core 3.0GHzvsIntel Core i5-3360M 2.8GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GTX 860M 2GB SLI is a solution of two GeForce GTX 860M 2GB put together using NVIDIA's SLI technology.

Architecture
Check the Page of [GeForce GTX 860M 2GB](http://www.game-debate.com/hardware/index.php?gid=2143&graphics=GeForce%20GTX%20860M%202GB) to know more about its Architecture.

GPU
The Central Unit of each GPU runs at 1029MHz and goes up to 1097MHz, in Turbo Mode.

Memory: Speed
Each GPU is equipped with fast GDDR5 and Accesses the Frame Buffer through a 128-bit Memory Interface. The Memory Clock Operates at 1253MHz.

Memory: Frame Buffer
Each GPU can fill up a Memory Pool of up to 2GB.

Power Consumption
Power Consumption is around 120W.

Performance
Gaming benchmarks prove that at 1920x1080, the best suited resolution, GeForce GTX 860M 2GB SLI is around 20% faster than a Single GeForce GTX 880M.

System Suggestions
We recommend a High-End Processor and 8GB of RAM for Optimal Performance.
Overview
GeForce GTX 660M is a Fast-Middle-Class Mobile Graphics Card based on the first revision of the Kepler Architecture.

Architecture
The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs.
Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU.

GPU
It equips a GPU Codenamed GK107-N13E-GE-A2 which has 2 Stream Multiprocessors activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is initially clocked at 835MHz and goes up to 950MHz, in Turbo Mode.

Memory
The GPU accesses a 2GB frame buffer of fast GDDR5, through a 128-bit memory interface. The size of the frame buffer is exaggerated and no way benefits the GPU. The Memory Clock Operates at 1000MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for SLI, Kepler Boost, Optimus, CUDA, OpenCL, DirectCompute, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 45W, it is suited for average sized laptops.

Performance
Gaming benchmarks indicate its performance is not too far from the desktop GeForce GTX 650.

System Suggestions
We recommend a decent processor (Intel Core i5 Mobile) and 8GB of RAM for a system with GeForce GTX 660M.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
-

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