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Radeon HD 5870 vs Radeon R9 380 2G

Intro

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

Compare that to the Radeon R9 380 2G, which uses a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM runs at a frequency of 1425 MHz on this card. It features 1792 SPUs along with 112 TAUs and 32 Rasterization Operator Units.

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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

In theory, the Radeon R9 380 2G should perform 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 is quite a bit (more or less 60%) faster with regards to AF than the Radeon HD 5870. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 380 2G is the winner, though not by far. (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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max 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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