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Radeon HD 4870 512MB vs Radeon R7 260X

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 frequency of 900 MHz on this card. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Compare all that to the Radeon R7 260X, which features a GPU core clock speed of 1100 MHz, and 2048 MB of GDDR5 RAM set to run at 1625 MHz through a 128-bit bus. It also is comprised of 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

In theory, the Radeon HD 4870 512MB should be 11% faster than the Radeon R7 260X in general, because of its greater data rate. (explain)

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

Texel Rate

The Radeon R7 260X should be much (about 105%) faster with regards to AF 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

If using a high screen resolution is important to you, then the Radeon R7 260X is a better choice, by a large margin. (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 (counted in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

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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