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Radeon HD 3870 512MB vs Radeon R7 M260X

Intro

The Radeon HD 3870 512MB uses a 55 nm design. AMD has clocked the core speed at 775 MHz. The GDDR3 memory runs at a speed of 900 MHz on this particular model. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R7 M260X, which features core clock speeds of 825 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. 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 R7 M260X should perform a small bit faster than the Radeon HD 3870 512MB in general. (explain)

Radeon R7 M260X 64000 MB/sec
Radeon HD 3870 512MB 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The Radeon R7 M260X will be a lot (approximately 60%) better at texture filtering than the Radeon HD 3870 512MB. (explain)

Radeon R7 M260X 19800 Mtexels/sec
Radeon HD 3870 512MB 12400 Mtexels/sec
Difference: 7400 (60%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 3870 512MB is the winner, and very much so. (explain)

Radeon HD 3870 512MB 12400 Mpixels/sec
Radeon R7 M260X 6600 Mpixels/sec
Difference: 5800 (88%)

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 3870 512MB

Amazon.com

Check prices at:

Radeon R7 M260X

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 3870 512MB Radeon R7 M260X
Manufacturer AMD AMD
Year Nov 19, 2007 June 2014
Code Name RV670 XT Opal
Memory 512 MB 2048 MB
Core Speed 775 MHz 825 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 106 watts (Unknown) watts
Bandwidth 57600 MB/sec 64000 MB/sec
Texel Rate 12400 Mtexels/sec 19800 Mtexels/sec
Pixel Rate 12400 Mpixels/sec 6600 Mpixels/sec
Unified Shaders 320(64x5) 384
Texture Mapping Units 16 24
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16/AGP 8x 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 max amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR 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 texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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

Display Prices

Hide Prices

Radeon HD 3870 512MB

Amazon.com

Check prices at:

Radeon R7 M260X

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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