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Radeon HD 4870 512MB vs Radeon RX 460


Intro

The Radeon HD 4870 512MB uses a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 memory is set to run at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Compare all that to the Radeon RX 460, which has GPU core speed of 1090 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also features 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 75 Watts (100%)

Memory Bandwidth

The Radeon HD 4870 512MB should in theory be a small bit faster than the Radeon RX 460 in general. (explain)

Radeon HD 4870 512MB 115200 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 3200 (3%)

Texel Rate

The Radeon RX 460 will be quite a bit (approximately 103%) more effective at AF than the Radeon HD 4870 512MB. (explain)

Radeon RX 460 61040 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 31040 (103%)

Pixel Rate

The Radeon RX 460 will be quite a bit (about 45%) more effective at AA than the Radeon HD 4870 512MB, and should be capable of handling higher screen resolutions better. (explain)

Radeon RX 460 17440 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 5440 (45%)

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 4870 512MB

Amazon.com

Radeon RX 460

Amazon.com

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 4870 512MB Radeon RX 460
Manufacturer AMD AMD
Year Jun 25, 2008 August 2016
Code Name RV770 XT Polaris 11
Memory 512 MB 4096 MB
Core Speed 750 MHz 1090 MHz
Memory Speed 3600 MHz 7000 MHz
Power (Max TDP) 150 watts 75 watts
Bandwidth 115200 MB/sec 112000 MB/sec
Texel Rate 30000 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 800(160x5) 896
Texture Mapping Units 40 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 14 nm
Transistors 956 million 3000 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4870 512MB

Amazon.com

Radeon RX 460

Amazon.com

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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