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Radeon HD 7950 3GB vs Radeon R9 M380

Intro

The Radeon HD 7950 3GB makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this specific model. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Compare that to the Radeon R9 M380, which features a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 3GB should in theory be a lot superior to the Radeon R9 M380 overall. (explain)

Radeon HD 7950 3GB 240000 MB/sec
Radeon R9 M380 96000 MB/sec
Difference: 144000 (150%)

Texel Rate

The Radeon HD 7950 3GB will be a lot (more or less 124%) more effective at anisotropic filtering than the Radeon R9 M380. (explain)

Radeon HD 7950 3GB 89600 Mtexels/sec
Radeon R9 M380 40000 Mtexels/sec
Difference: 49600 (124%)

Pixel Rate

The Radeon HD 7950 3GB should be quite a bit (approximately 60%) better at AA than the Radeon R9 M380, and also should be able to handle higher resolutions better. (explain)

Radeon HD 7950 3GB 25600 Mpixels/sec
Radeon R9 M380 16000 Mpixels/sec
Difference: 9600 (60%)

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 7950 3GB

Amazon.com

Check prices at:

Radeon R9 M380

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 7950 3GB Radeon R9 M380
Manufacturer AMD AMD
Year January 2012 2015
Code Name Tahiti Pro Cape Verde
Memory 3072 MB 4096 MB
Core Speed 800 MHz 1000 MHz
Memory Speed 5000 MHz 6000 MHz
Power (Max TDP) 200 watts (Unknown) watts
Bandwidth 240000 MB/sec 96000 MB/sec
Texel Rate 89600 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1792 640
Texture Mapping Units 112 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 384-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 4313 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 7950 3GB

Amazon.com

Check prices at:

Radeon R9 M380

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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