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Radeon HD 5870 vs Radeon R9 380X

Intro

The Radeon HD 5870 has clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 1600(320x5) SPUs as well as 80 TAUs and 32 ROPs.

Compare those specifications to the Radeon R9 380X, which uses a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 RAM is set to run at a speed of 1425 MHz on this particular model. It features 2048 SPUs as well as 128 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 380X 190 Watts
Difference: 2 Watts (1%)

Memory Bandwidth

Theoretically, the Radeon R9 380X should be a small bit faster than the Radeon HD 5870 overall. (explain)

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

Texel Rate

The Radeon R9 380X should be quite a bit (about 83%) more effective at anisotropic filtering than the Radeon HD 5870. (explain)

Radeon R9 380X 124160 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 56160 (83%)

Pixel Rate

The Radeon R9 380X should be a bit (approximately 14%) faster with regards to anti-aliasing than the Radeon HD 5870, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon R9 380X 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 380X

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 380X
Manufacturer AMD AMD
Year September 23, 2009 November 2015
Code Name Cypress XT Tonga XT
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 124160 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 1600(320x5) 2048
Texture Mapping Units 80 128
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 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 3.2 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 5870

Amazon.com

Check prices at:

Radeon R9 380X

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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