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Radeon HD 4870 X2 vs Radeon R7 M260

Intro

The Radeon HD 4870 X2 comes with a clock frequency of 750 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare all of that to the Radeon R7 M260, which uses a 28 nm design. AMD has clocked the core frequency at 715 MHz. The DDR3 RAM works at a speed of 1000 MHz on this particular card. It features 384 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4870 X2 should perform quite a bit faster than the Radeon R7 M260 overall. (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 quite a bit (approximately 250%) more effective at anisotropic filtering than the Radeon R7 M260. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 4870 X2 is a better choice, by a large margin. (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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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

Display Prices

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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.

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