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Radeon HD 4870 512MB vs Radeon R7 260X

Intro

The Radeon HD 4870 512MB features a GPU core clock speed of 750 MHz, and the 512 MB of GDDR5 memory is set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon R7 260X, which comes with a core clock frequency of 1100 MHz and a GDDR5 memory speed of 1625 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X 115 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 35 Watts (30%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 512MB will be 11% faster than the Radeon R7 260X in general, because of its greater bandwidth. (explain)

Radeon HD 4870 512MB 115200 MB/sec
Radeon R7 260X 104000 MB/sec
Difference: 11200 (11%)

Texel Rate

The Radeon R7 260X will be much (approximately 105%) faster with regards to texture filtering than the Radeon HD 4870 512MB. (explain)

Radeon R7 260X 61600 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 31600 (105%)

Pixel Rate

The Radeon R7 260X will be quite a bit (approximately 47%) faster with regards to FSAA than the Radeon HD 4870 512MB, and should be able to handle higher resolutions without losing too much performance. (explain)

Radeon R7 260X 17600 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 5600 (47%)

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 R7 260X

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 R7 260X
Manufacturer AMD AMD
Year Jun 25, 2008 October 2013
Code Name RV770 XT Bonaire XTX
Memory 512 MB 2048 MB
Core Speed 750 MHz 1100 MHz
Memory Speed 3600 MHz 6500 MHz
Power (Max TDP) 150 watts 115 watts
Bandwidth 115200 MB/sec 104000 MB/sec
Texel Rate 30000 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 17600 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 28 nm
Transistors 956 million 2080 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 4870 512MB

Amazon.com

Check prices at:

Radeon R7 260X

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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