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Radeon HD 7850 vs Radeon R9 380 4G

Intro

The Radeon HD 7850 makes use of a 28 nm design. AMD has set the core speed at 860 MHz. The GDDR5 memory works at a frequency of 1200 MHz on this particular card. It features 1024 SPUs along with 64 TAUs and 32 ROPs.

Compare those specs to the Radeon R9 380 4G, which features a core clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is made up of 1792 SPUs, 112 TAUs, and 32 ROPs.

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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 4G 8837 points
Radeon HD 7850 5200 points
Difference: 3637 (70%)

Ethereum Mining Hash Rate

Radeon R9 380 4G 21 Mh/s
Radeon HD 7850 13 Mh/s
Difference: 8 (62%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Radeon R9 380 4G 190 Watts
Difference: 60 Watts (46%)

Memory Bandwidth

Theoretically, the Radeon R9 380 4G should be a little bit faster than the Radeon HD 7850 overall. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 4G is quite a bit (more or less 97%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 53600 (97%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 380 4G is a better choice, though only just barely. (explain)

Radeon R9 380 4G 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 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 7850 Radeon R9 380 4G
Manufacturer AMD AMD
Year March 2012 June 2015
Code Name Pitcairn Pro Antigua PRO
Memory 2048 MB 4096 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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the 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 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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