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Radeon HD 4870 X2 vs Radeon R7 M260

Intro

The Radeon HD 4870 X2 has a GPU clock speed of 750 MHz, and the 1024 MB of GDDR5 memory is set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Compare all of that to the Radeon R7 M260, which uses a 28 nm design. AMD has set the core speed at 715 MHz. The DDR3 memory is set to run at a speed of 1000 MHz on this particular model. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4870 X2, in theory, should be quite a bit faster than the Radeon R7 M260 in general. (explain)

Radeon HD 4870 X2 230400 MB/sec
Radeon R7 M260 16000 MB/sec
Difference: 214400 (1340%)

Texel Rate

The Radeon HD 4870 X2 will be a lot (more or less 250%) better at AF than the Radeon R7 M260. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
Radeon R7 M260 17160 Mtexels/sec
Difference: 42840 (250%)

Pixel Rate

The Radeon HD 4870 X2 will be much (more or less 320%) more effective at anti-aliasing than the Radeon R7 M260, and will be able to handle higher screen resolutions better. (explain)

Radeon HD 4870 X2 24000 Mpixels/sec
Radeon R7 M260 5720 Mpixels/sec
Difference: 18280 (320%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon R7 M260

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 X2 Radeon R7 M260
Manufacturer AMD AMD
Year Aug 12, 2008 June 2014
Code Name R700 Opal/Topaz
Memory 1024 MB (x2) 2048 MB
Core Speed 750 MHz (x2) 715 MHz
Memory Speed 3600 MHz (x2) 2000 MHz
Power (Max TDP) 350 watts (Unknown) watts
Bandwidth 230400 MB/sec 16000 MB/sec
Texel Rate 60000 Mtexels/sec 17160 Mtexels/sec
Pixel Rate 24000 Mpixels/sec 5720 Mpixels/sec
Unified Shaders 800(160x5) (x2) 384
Texture Mapping Units 40 (x2) 24
Render Output Units 16 (x2) 8
Bus Type GDDR5 DDR3
Bus Width 256-bit (x2) 64-bit
Fab Process 55 nm 28 nm
Transistors 956 million (Unknown) million
Bus PCIe 2.0 x16 (PCIe bridge) PCIe 3.0 x8
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at 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 write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon R7 M260

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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