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Radeon HD 3870 1GB vs Radeon R7 M260X

Intro

The Radeon HD 3870 1GB features a GPU core speed of 775 MHz, and the 1024 MB of GDDR4 memory runs at 1125 MHz through a 256-bit bus. It also features 320(64x5) Stream Processors, 16 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon R7 M260X, which comes with clock speeds of 825 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 384 SPUs as well as 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3870 1GB should theoretically be just a bit better than the Radeon R7 M260X in general. (explain)

Radeon HD 3870 1GB 72000 MB/sec
Radeon R7 M260X 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon R7 M260X is quite a bit (more or less 60%) more effective at texture filtering than the Radeon HD 3870 1GB. (explain)

Radeon R7 M260X 19800 Mtexels/sec
Radeon HD 3870 1GB 12400 Mtexels/sec
Difference: 7400 (60%)

Pixel Rate

The Radeon HD 3870 1GB is a lot (about 88%) faster with regards to full screen anti-aliasing than the Radeon R7 M260X, and also able to handle higher screen resolutions more effectively. (explain)

Radeon HD 3870 1GB 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 1GB

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 1GB Radeon R7 M260X
Manufacturer AMD AMD
Year Nov 19, 2007 June 2014
Code Name RV670 XT Opal
Memory 1024 MB 2048 MB
Core Speed 775 MHz 825 MHz
Memory Speed 2250 MHz 4000 MHz
Power (Max TDP) 106 watts (Unknown) watts
Bandwidth 72000 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 GDDR4 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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock 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 higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at 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 chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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 potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3870 1GB

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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