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Radeon HD 4870 1GB vs Radeon R7 260X

Intro

The Radeon HD 4870 1GB uses a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this specific card. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Compare that to the Radeon R7 260X, which has GPU clock speed of 1100 MHz, and 2048 MB of GDDR5 RAM running at 1625 MHz through a 128-bit bus. It also is comprised of 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 R7 260X 115 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 35 Watts (30%)

Memory Bandwidth

In theory, the Radeon HD 4870 1GB will be 11% faster than the Radeon R7 260X in general, because of its higher bandwidth. (explain)

Radeon HD 4870 1GB 115200 MB/sec
Radeon R7 260X 104000 MB/sec
Difference: 11200 (11%)

Texel Rate

The Radeon R7 260X should be a lot (approximately 105%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)

Radeon R7 260X 61600 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 31600 (105%)

Pixel Rate

The Radeon R7 260X is much (about 47%) better at anti-aliasing than the Radeon HD 4870 1GB, and also capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R7 260X 17600 Mpixels/sec
Radeon HD 4870 1GB 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 1GB

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 1GB Radeon R7 260X
Manufacturer AMD AMD
Year Jun 25, 2008 October 2013
Code Name RV770 XT Bonaire XTX
Memory 1024 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 information (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4870 1GB

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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