Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7850M GeForce GTX 660M
Red Dead Redemption 2 435% 435%
Cyberpunk 2077 635% 635%
Doom Eternal 360% 360%
Call of Duty: Modern Warfare 435% 435%
Dragon Ball Z Kakarot 230% 230%
Halo: Reach 70% 70%
Microsoft Flight Simulator 635% 635%
Star Wars: Jedi - Fallen Order 635% 635%
Grand Theft Auto VI 718% 718%
Need For Speed Heat 435% 435%

In terms of overall gaming performance, the graphical capabilities of the Radeon HD 7850M and the GeForce GTX 660M are equal.

The GeForce GTX 660M has a 160 MHz higher core clock speed than the Radeon HD 7850M, but the Radeon HD 7850M has 8 more Texture Mapping Units than the GeForce GTX 660M. As a result, the Radeon HD 7850M exhibits a 0.3 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 160 MHz higher core clock speed than the Radeon HD 7850M and the same number of Render Output Units. This results in the GeForce GTX 660M providing 2.6 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 Radeon HD 7850M was released less than a year after the GeForce GTX 660M, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The Radeon HD 7850M and the GeForce GTX 660M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The memory bandwidth of the Radeon HD 7850M and the GeForce GTX 660M are the same, which means the Radeon HD 7850M and the GeForce GTX 660M have equal limitations when it comes to graphical data transfer.

The Radeon HD 7850M has 640 Shader Processing Units and the GeForce GTX 660M has 384. However, the actual shader performance of the Radeon HD 7850M is 367 and the actual shader performance of the GeForce GTX 660M is 365. The Radeon HD 7850M having 2 better shader performance is not particularly notable, as altogether the GeForce GTX 660M performs better when taking into account other relevant data.

The Radeon HD 7850M requires 40 Watts to run and the GeForce GTX 660M requires 50 Watts. The GeForce GTX 660M requires 10 Watts more than the Radeon HD 7850M to run. The difference is not significant enough for the GeForce GTX 660M to have a noticeably larger impact on your yearly electricity bills than the Radeon HD 7850M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed675 MHzvs835 MHz
Boost Clock-vs950 MHz
ArchitectureGCN 1.0 Heathrow ProKepler GK107-N13E-GE-A2
OC Potential Fair vs Poor
Driver Support Good vs Good
Release Date24 Apr 2012vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
7.5
vs green tick
7.9
1600x900
5.4
vs green tick
5.9
1920x1080
4.4
green tick vs green tick
4.4
2560x1440
2.8
green tick vs green tick
2.8
3840x2160
1.8
green tick vs green tick
1.8

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1000 MHzvs1000 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth64GB/secvs64GB/sec
L2 Cache 256 KB green tick vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units640vs384
Actual Shader Performance18%vs18%
Technology28nmvs28nm
Texture Mapping Units40vs32
Texture Rate27 GTexel/svs26.7 GTexel/s
Render Output Units16vs16
Pixel Rate10.8 GPixel/svs13.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs0
DVI Connections1vs0
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power40 Wattsvs50 Watts
Recommended PSU--

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3360M 2.8GHzvsIntel Core i5-3360M 2.8GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1600x900vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 7850M is a Performance Mobile Graphics Card based on the First revision of the GCN Architecture.

Architecture
The GCN Architecture succeeds the 40nm Terascale Architecture. In addition to being produced with a 28nm Technology, the GCN Architecture adds other Technologies that allow for energy efficiency. For example, ZeroCore Power, a long idle power saving technology, allows the Graphics Cards to shut down by itself when the Monitor is turned off.
GCN also adds Improved Anisotropic Filtering, DirectX 11 Tessellation and the Partially Resident Textures (PRT) Technology, which enables future games to utilize ultra-high resolution textures with the same performance as today's small and often repetitive textures.

GPU
It equips a GPU codenamed Heathrow Pro which has 10 Compute Units activated and thus offers 640 Shader Processing Units, 40 TMUs and 16 ROPs. The Central Unit Operates at 675MHz.

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 in no way benefits the GPU. The memory clock operates at 1000MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for Crossfire, PowerTune Technology, Eyefinity, App Acceleration, HD3D, ZeroCore Power and other technologies.

Power Consumption
With a rated board TDP of 40W, it is suited for 17" or larger laptops.

Performance
Gaming benchmarks put its on average with NVIDIA's GeForce GTX 660M.

System Suggestions
We recommend a Decent Processor (Intel Core i5 Mobile) and 8GB of RAM for a system with Radeon HD 7850M.
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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