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Radeon HD 5870 vs Radeon R9 380 4G

Intro

The Radeon HD 5870 comes with core speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 1600(320x5) SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Compare all of that to the Radeon R9 380 4G, which has a clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
Radeon R9 380 4G 190 Watts
Difference: 2 Watts (1%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 4G will be 19% quicker than the Radeon HD 5870 in general, due to its higher bandwidth. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 4G will be a lot (about 60%) faster with regards to anisotropic filtering than the Radeon HD 5870. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 40640 (60%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 380 4G is the winner, but not by far. (explain)

Radeon R9 380 4G 31040 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 3840 (14%)

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 5870

Amazon.com

Check prices at:

Radeon R9 380 4G

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 5870 Radeon R9 380 4G
Manufacturer AMD AMD
Year September 23, 2009 June 2015
Code Name Cypress XT Antigua PRO
Memory 1024 MB 4096 MB
Core Speed 850 MHz 970 MHz
Memory Speed 4800 MHz 5700 MHz
Power (Max TDP) 188 watts 190 watts
Bandwidth 153600 MB/sec 182400 MB/sec
Texel Rate 68000 Mtexels/sec 108640 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 1600(320x5) 1792
Texture Mapping Units 80 112
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 2154 million 5000 million
Bus PCIe 2.1 x16 PCIe 3.0 ×16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 3.2 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 applied in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably 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 5870

Amazon.com

Check prices at:

Radeon R9 380 4G

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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