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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 820M 1GB Radeon HD 8670M

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 820M 1GB are marginally better than the AMD Radeon HD 8670M.

The GeForce 820M 1GB and the Radeon HD 8670M have the same core clock speed of 775 MHz, but the Radeon HD 8670M has 8 more Texture Mapping Units than the GeForce 820M 1GB. As a result, the Radeon HD 8670M exhibits a 6.2 GTexel/s better Texture Fill Rate than the GeForce 820M 1GB. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce 820M 1GB and the Radeon HD 8670M 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 GeForce 820M 1GB was released less than a year after the Radeon HD 8670M, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GeForce 820M 1GB and the Radeon HD 8670M 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 GeForce 820M 1GB and the Radeon HD 8670M are the same, which means the GeForce 820M 1GB and the Radeon HD 8670M have equal limitations when it comes to graphical data transfer.

The GeForce 820M 1GB has 96 Shader Processing Units and the Radeon HD 8670M has 384. However, the actual shader performance of the GeForce 820M 1GB is 183 and the actual shader performance of the Radeon HD 8670M is 269. The Radeon HD 8670M having 86 better shader performance and an altogether better performance when taking into account other relevant data means that the Radeon HD 8670M delivers a marginally smoother and more efficient experience when processing graphical data than the GeForce 820M 1GB.

The GeForce 820M 1GB requires 15 Watts to run but there is no entry for the Radeon HD 8670M.

Can I Run It

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GPU Architecture

Core Speed775 MHzvs775 MHz
Boost Clock955 MHzvs825 MHz
ArchitectureFermi GF117-N15V-GMGCN 1.1 Mars XT
OC Potential Fair vs Poor
Driver Support Poor vs Great
Release Date27 Nov 2013vs01 Mar 2013
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
green tick vs -
green tick vs green tick
green tick vs -
3840x2160 - green tick vs green tick -

GPU Memory

Memory1024 MBvs1024 MB
Memory Speed900 MHzvs900 MHz
Memory Bus64 Bitvs64 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth14.4GB/secvs14.4GB/sec
L2 Cache 128 KB vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units96vs384
Actual Shader Performance9%vs13%
Texture Mapping Units16vs24
Texture Rate12.4 GTexel/svs18.6 GTexel/s
Render Output Units8vs8
Pixel Rate6.2 GPixel/svs6.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power15 Watts-
Recommended PSU--

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3110M 2.4GHz-
Recommended RAM4 GBvs4 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce 820M 1GB is a entry-level Mobile Graphics Card based on the second revision of the Fermi Architecture.

The Fermi Architecture is manufactured with a 40nm Technology and uses a technique known as Hot Clocking: The Shaders are clocked twice as fast as the Central Unit. While this leads to a reasonable performance boost, it causes enormous amounts of energy dissipation, leading, ultimately, to a significantly higher operating temperature.
Fermi is also the first GPU architecture with fully cached memory access which increases memory performance.

It equips a GPU Codenamed GF117-N15V-GM which has 2 Stream Multiprocessors activated and thus offers 96 Shader Processing Units, 16 TMUs and 8 ROPs. The Central Unit is initially clocked at 625MHz and may reach up to 955MHz, in Turbo Mode.
Additionally, GF117 is built using a 28nm technology.

The GPU accesses a 1GB frame buffer of DDR3, through a 64-bit memory interface. The size of the frame buffer is exaggerated and no way benefits the GPU. The Memory Clock Operates at 900MHz.

DirectX 11.0 Support (11.0 Hardware Default) and support for Optimus, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 15W, it is suited for average sized laptops.

GeForce 820M 1GB is essentially a fast GeForce GT 720M.
Gaming benchmarks indicate its performance is slightly above the older GeForce GT 720M.

System Suggestions
We recommend a modest processor (Intel Core i3 Mobile) and 4GB of RAM for a system with GeForce 820M 1GB.
Radeon HD 8670M is a middle-class Graphics Card based on the GCN architecture.
It features the Mars XT GPU and thus offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The central unit can be initially clocked at up to 775MHz reach up to 825MHz in Turbo Mode while the memory interface is of 64-bit of standard DDR3.
It can be addressed as a fast Radeon HD 8550M due to its considerably higher core-clock speed.
Benchmarks indicate its performance is somewhat above NVIDIA's GeForce GT 630M and thus the card can run most modern games at medium games.
Recommended CPUAMD Turion X2 Dual Core Mobile RM-72
Intel Celeron Dual-Core T1700
AMD Athlon 64 X2 Dual Core QL-64
Intel Core 2 Duo T2600 2.16GHz
Intel Core 2 Duo T2700 2.33GHz
Possible GPU UpgradesN/AN/A
GPU Variants--