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Radeon HD 4870 512MB vs Radeon RX 460

Intro

The Radeon HD 4870 512MB makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory works at a frequency of 900 MHz on this card. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Compare all of that to the Radeon RX 460, which makes use of a 14 nm design. AMD has clocked the core speed at 1090 MHz. The GDDR5 memory works at a speed of 1750 MHz on this particular card. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator 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 theoretically be a small bit faster than the Radeon RX 460 overall. (explain)

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

Texel Rate

The Radeon RX 460 is quite a bit (more or less 103%) better at anisotropic filtering 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 should be a lot (about 45%) more effective at AA than the Radeon HD 4870 512MB, and also capable of handling higher resolutions more effectively. (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

Check prices at:

Radeon RX 460

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 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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 4870 512MB

Amazon.com

Check prices at:

Radeon RX 460

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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