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Radeon HD 5870 vs Radeon R9 380 2G

Intro

The Radeon HD 5870 comes with a core clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1600(320x5) SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon R9 380 2G, which features core speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 380 2G, in theory, should be just a bit faster than the Radeon HD 5870 overall. (explain)

Radeon R9 380 2G 182400 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 2G should be a lot (more or less 60%) faster with regards to anisotropic filtering than the Radeon HD 5870. (explain)

Radeon R9 380 2G 108640 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 40640 (60%)

Pixel Rate

The Radeon R9 380 2G will be a little bit (about 14%) faster with regards to full screen anti-aliasing than the Radeon HD 5870, and able to handle higher screen resolutions better. (explain)

Radeon R9 380 2G 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 2G

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 2G
Manufacturer AMD AMD
Year September 23, 2009 June 2015
Code Name Cypress XT Antigua PRO
Memory 1024 MB 2048 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 data (measured in MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 by the core clock speed of the chip. The higher the texel rate, the better the video 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 the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - 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 2G

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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