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Radeon HD 3870 512MB vs Radeon R9 M370X

Intro

The Radeon HD 3870 512MB has core clock speeds of 775 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

Compare all that to the Radeon R9 M370X, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M370X should theoretically be much superior to the Radeon HD 3870 512MB in general. (explain)

Radeon R9 M370X 72000 MB/sec
Radeon HD 3870 512MB 57600 MB/sec
Difference: 14400 (25%)

Texel Rate

The Radeon R9 M370X will be quite a bit (about 158%) better at anisotropic filtering than the Radeon HD 3870 512MB. (explain)

Radeon R9 M370X 32000 Mtexels/sec
Radeon HD 3870 512MB 12400 Mtexels/sec
Difference: 19600 (158%)

Pixel Rate

The Radeon R9 M370X should be just a bit (more or less 3%) more effective at full screen anti-aliasing than the Radeon HD 3870 512MB, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M370X 12800 Mpixels/sec
Radeon HD 3870 512MB 12400 Mpixels/sec
Difference: 400 (3%)

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 R9 M370X

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 R9 M370X
Manufacturer AMD AMD
Year Nov 19, 2007 2015
Code Name RV670 XT Cape Verde
Memory 512 MB 2048 MB
Core Speed 775 MHz 800 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 106 watts (Unknown) watts
Bandwidth 57600 MB/sec 72000 MB/sec
Texel Rate 12400 Mtexels/sec 32000 Mtexels/sec
Pixel Rate 12400 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 320(64x5) 640
Texture Mapping Units 16 40
Render Output Units 16 16
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 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3870 512MB

Amazon.com

Check prices at:

Radeon R9 M370X

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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