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Radeon HD 6870 vs Radeon RX 460 2GB

Intro

The Radeon HD 6870 features core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs as well as 56 Texture Address Units and 32 ROPs.

Compare all of that to the Radeon RX 460 2GB, which features clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 896 SPUs along with 56 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB 75 Watts
Radeon HD 6870 151 Watts
Difference: 76 Watts (101%)

Memory Bandwidth

Performance-wise, the Radeon HD 6870 should theoretically be a small bit superior to the Radeon RX 460 2GB in general. (explain)

Radeon HD 6870 134400 MB/sec
Radeon RX 460 2GB 112000 MB/sec
Difference: 22400 (20%)

Texel Rate

The Radeon RX 460 2GB should be much (about 21%) faster with regards to anisotropic filtering than the Radeon HD 6870. (explain)

Radeon RX 460 2GB 61040 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 10640 (21%)

Pixel Rate

The Radeon HD 6870 is much (about 65%) more effective at full screen anti-aliasing than the Radeon RX 460 2GB, and will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6870 28800 Mpixels/sec
Radeon RX 460 2GB 17440 Mpixels/sec
Difference: 11360 (65%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon HD 6870

Amazon.com

Check prices at:

Radeon RX 460 2GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 6870 Radeon RX 460 2GB
Manufacturer AMD AMD
Year October 2010 August 2016
Code Name Barts XT Polaris 11
Memory 1024 MB 2048 MB
Core Speed 900 MHz 1090 MHz
Memory Speed 4200 MHz 7000 MHz
Power (Max TDP) 151 watts 75 watts
Bandwidth 134400 MB/sec 112000 MB/sec
Texel Rate 50400 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 1120 896
Texture Mapping Units 56 56
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 14 nm
Transistors 1700 million 3000 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6870

Amazon.com

Check prices at:

Radeon RX 460 2GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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