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Radeon HD 7850 vs Radeon R9 380 4G

Intro

The Radeon HD 7850 has a core clock speed of 860 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It features 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Compare those specs to the Radeon R9 380 4G, which uses a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM runs at a speed of 1425 MHz on this particular card. It features 1792 SPUs as well as 112 Texture Address Units 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

The Radeon R9 380 4G should theoretically perform a little bit faster than the Radeon HD 7850 in general. (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 a lot (more or less 97%) better at texture 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

The Radeon R9 380 4G is just a bit (about 13%) better at full screen anti-aliasing than the Radeon HD 7850, and will be able to handle higher resolutions without losing too much performance. (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 max amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core 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 in a 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. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum 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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