Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 M485X 4GB GeForce GTX 660M
Red Dead Redemption 2 75% 435%
Cyberpunk 2077 141% 635%
Doom Eternal 51% 360%
Call of Duty: Modern Warfare 75% 435%
Dragon Ball Z Kakarot 8% 230%
Halo: Reach 44% 70%
Microsoft Flight Simulator 141% 635%
Star Wars: Jedi - Fallen Order 141% 635%
Grand Theft Auto VI 168% 718%
Need For Speed Heat 75% 435%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 M485X 4GB are massively better than the Nvidia GeForce GTX 660M.

The GeForce GTX 660M has a 112 MHz higher core clock speed than the R9 M485X, but the R9 M485X has 96 more Texture Mapping Units than the GeForce GTX 660M. As a result, the R9 M485X exhibits a 65.8 GTexel/s better Texture Fill Rate than the GeForce GTX 660M. 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 660M has a 112 MHz higher core clock speed than the R9 M485X, but the R9 M485X has 16 more Render Output Units than the GeForce GTX 660M. As a result, the R9 M485X exhibits a 9.7 GPixel/s better Pixel Fill Rate than the GeForce GTX 660M. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R9 M485X was released over three years more recently than the GeForce GTX 660M, and so the R9 M485X is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce GTX 660M when running the latest games.

The R9 M485X 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 R9 M485X also has superior memory performance overall.

The R9 M485X has 96 GB/sec greater memory bandwidth than the GeForce GTX 660M, which means that the memory performance of the R9 M485X is massively better than the GeForce GTX 660M.

The Radeon R9 M485X 4GB has 2048 Shader Processing Units and the GeForce GTX 660M has 384. However, the actual shader performance of the R9 M485X is 1259 and the actual shader performance of the GeForce GTX 660M is 365. The R9 M485X having 894 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 M485X delivers a massively smoother and more efficient experience when processing graphical data than the GeForce GTX 660M.

The Radeon R9 M485X 4GB requires 125 Watts to run and the GeForce GTX 660M requires 50 Watts. The R9 M485X requires 75 Watts more than the GeForce GTX 660M to run. The difference is significant enough that the R9 M485X 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 Speed723 MHzvs835 MHz
Boost Clock-vs950 MHz
ArchitectureGCN 1.2 Amethyst XTKepler GK107-N13E-GE-A2
OC Potential Fair vs Poor
Driver Support Great vs Good
Release Date13 May 2016vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
10
green tick vs
7.9
1600x900
9.8
green tick vs
5.9
1920x1080
7.8
green tick vs
4.4
2560x1440
5.7
green tick vs
2.8
3840x2160
4.2
green tick vs
1.8

GPU Memory

Memory4096 MBvs2048 MB
Memory Speed1250 MHzvs1000 MHz
Memory Bus256 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth160GB/secvs64GB/sec
L2 Cache 768 KB green tick vs 256 KB
Delta Color Compression yes vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units2048vs384
Actual Shader Performance61%vs18%
Technology28nmvs28nm
Texture Mapping Units128vs32
Texture Rate92.5 GTexel/svs26.7 GTexel/s
Render Output Units32vs16
Pixel Rate23.1 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 Power125 Wattsvs50 Watts
Recommended PSU--

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-6820HQ 4-Core 2.7GHzvsIntel Core i5-3360M 2.8GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R9 M485X 4GB is a Performance Mobile Graphics Card based on the second revision of the Graphics Core Next Architecture (CGN).

Architecture
Radeon R9 M485X 4GB Features a GPU Codenamed Amethyst XT which is a Third Gen GCN GPU and is identical to the Tonga XT GPU used on the Desktop Radeon R9 380X.
Amethyst XT has 32 Compute Units Unlocked and thus offers 2048 Shader Processing Units, 128 TMUs and 32 ROPs.

GPU
The Central Unit is Clocked at 723MHz.

Memory: Speed
The GPU is equipped with fast GDDR5 and Accesses the Frame Buffer through a 256-bit Memory Interface. The Memory Clock Operates at 1250MHz.

Memory: Frame Buffer
The GPU can fill up a Memory Pool of up to 4GB. Under most circumstances, this only proves useful in certain 3D Games whose Settings Require Large Amounts of Memory.
However, because the GPU itself is too weak to work under other circumstances in which 4GB of Memory are needed - such as 4K Gaming, a Large Frame Buffer is mostly a Gimmick.

Power Consumption
With a rated board TDP of 125W, it is suited for very large laptops.

Performance
Radeon R9 M485X 4GB is a Direct Rebrand of Radeon R9 M395X 4GB.
Performance is Comparable to the desktop Radeon R9 280. Therefore, even GeForce GTX 970M is still faster.

System Suggestions
Radeon R9 M485X 4GB is best suited for resolutions up to and including 1920x1080. We recommend a Strong 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
-
-

Title

Body