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Radeon HD 7850 vs Radeon R9 380 2G

Intro

The Radeon HD 7850 comes with core clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Compare all that to the Radeon R9 380 2G, which comes with GPU clock speed of 970 MHz, and 2048 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also is made up of 1792 Stream Processors, 112 TAUs, and 32 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 380 2G 8850 points
Radeon HD 7850 5200 points
Difference: 3650 (70%)

Ethereum Mining Hash Rate

Radeon R9 380 2G 19 Mh/s
Radeon HD 7850 13 Mh/s
Difference: 6 (46%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Radeon R9 380 2G 190 Watts
Difference: 60 Watts (46%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should perform a little bit faster than the Radeon HD 7850 in general. (explain)

Radeon R9 380 2G 182400 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 2G should be quite a bit (approximately 97%) more effective at AF than the Radeon HD 7850. (explain)

Radeon R9 380 2G 108640 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 53600 (97%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 380 2G is a better choice, not by a very large margin though. (explain)

Radeon R9 380 2G 31040 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 3520 (13%)

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 7850

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 7850 Radeon R9 380 2G
Manufacturer AMD AMD
Year March 2012 June 2015
Code Name Pitcairn Pro Antigua PRO
Memory 2048 MB 2048 MB
Core Speed 860 MHz 970 MHz
Memory Speed 4800 MHz 5700 MHz
Power (Max TDP) 130 watts 190 watts
Bandwidth 153600 MB/sec 182400 MB/sec
Texel Rate 55040 Mtexels/sec 108640 Mtexels/sec
Pixel Rate 27520 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 1024 1792
Texture Mapping Units 64 112
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 5000 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 7850

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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