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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7850M Radeon HD 6850M
Grand Theft Auto VI 695% 1077%
New World 400% 640%
Resident Evil 8 635% 988%
The Ascent 888% 1362%
Battlefield 2042 635% 988%
Far Cry 6 718% 1110%
FIFA 22 185% 322%
Halo Infinite 635% 988%
Forza Horizon 5 345% 559%
Age of Empires IV 465% 736%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7850M are significantly better than the AMD Radeon HD 6850M.

The Radeon HD 7850M and the Radeon HD 6850M have both the same core clock speed and the same Texture Fill Rate. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Radeon HD 7850M and the Radeon HD 6850M have both the same core clock speed and the same Pixel Fill Rate. 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 over a year more recently than the Radeon HD 6850M, and so the Radeon HD 7850M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the Radeon HD 6850M.

The Radeon HD 7850M has 1024 MB more video memory than the Radeon HD 6850M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the Radeon HD 7850M also has superior memory performance overall.

The Radeon HD 7850M has 38.4 GB/sec greater memory bandwidth than the Radeon HD 6850M, which means that the memory performance of the Radeon HD 7850M is noticeably better than the Radeon HD 6850M.

The Radeon HD 7850M has 640 Shader Processing Units and the Radeon HD 6850M has 800. However, the actual shader performance of the Radeon HD 7850M is 367 and the actual shader performance of the Radeon HD 6850M is 270. The Radeon HD 7850M having 97 better shader performance and an altogether better performance when taking into account other relevant data means that the Radeon HD 7850M delivers a noticeably smoother and more efficient experience when processing graphical data than the Radeon HD 6850M.

The Radeon HD 7850M transistor size technology is 12 nm (nanometers) smaller than the Radeon HD 6850M. This means that the Radeon HD 7850M is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD 6850M.

The Radeon HD 7850M requires 40 Watts to run and the Radeon HD 6850M requires 50 Watts. The Radeon HD 6850M requires 10 Watts more than the Radeon HD 7850M to run. The difference is not significant enough for the Radeon HD 6850M 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 MHzvs675 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Heathrow ProTerascale 2 Granville PRO
OC Potential Fair vs Fair
Driver Support Good vs Poor
Release Date24 Apr 2012vs04 Jan 2011
GPU LinkGD LinkGD Link

Resolution Performance

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GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1000 MHzvs800 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth64GB/secvs25.6GB/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%

GPU Display

Shader Processing Units640vs800
Actual Shader Performance18%vs13%
Texture Mapping Units40vs40
Texture Rate27 GTexel/svs27 GTexel/s
Render Output Units16vs16
Pixel Rate10.8 GPixel/svs10.8 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections1vs1
DVI Connections1vs2
HDMI Connections1vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power40 Wattsvs50 Watts
Recommended PSU--

GPU Features

Shader Model5.0vs5.0
Open GL4.4vs4.3
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3360M 2.8GHzvsIntel Core i7-2617M 2-Core 1.5GHz
Recommended RAM8 GBvs6 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.

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.

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.

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.

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.

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.
Radeon HD 6850M is a high-end GPU based on the 40nm Terrascale 2 architecture.
It's based on the Juniper Core (therefore related to Radeon HD 6770) and offers 800 Shader Processing Units, 40 TMUs and 16 ROPs on a 128-bit memory interface. Though fast GDDR5 is supported, the most common version features standard DDR3 but comes higher clocked. Its central clock runs at 675MHz and the memory clock operates at 800MHz.
Compared to Radeon HD 6850M, its performance is considerably slower due to being paired with standard DDR3 and the power consumption should remain similar since GDDR5 is more energy efficient.
Using a 720p resolution, most of today's games are only playable at medium settings but with very fluent frame rates (45+).
Recommended CPU
Possible GPU Upgrades
GPU Variants