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Radeon HD 7950 3GB vs Radeon RX 590

Intro

The Radeon HD 7950 3GB comes with core speeds of 800 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon RX 590, which features a GPU core clock speed of 1469 MHz, and 8192 MB of GDDR5 memory set to run at 2000 MHz through a 256-bit bus. It also is made up of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590 175 Watts
Radeon HD 7950 3GB 200 Watts
Difference: 25 Watts (14%)

Memory Bandwidth

As far as performance goes, the Radeon RX 590 should theoretically be a bit better than the Radeon HD 7950 3GB in general. (explain)

Radeon RX 590 262144 MB/sec
Radeon HD 7950 3GB 240000 MB/sec
Difference: 22144 (9%)

Texel Rate

The Radeon RX 590 is a lot (more or less 136%) more effective at AF than the Radeon HD 7950 3GB. (explain)

Radeon RX 590 211536 Mtexels/sec
Radeon HD 7950 3GB 89600 Mtexels/sec
Difference: 121936 (136%)

Pixel Rate

The Radeon RX 590 should be much (more or less 84%) more effective at AA than the Radeon HD 7950 3GB, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 590 47008 Mpixels/sec
Radeon HD 7950 3GB 25600 Mpixels/sec
Difference: 21408 (84%)

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

Radeon RX 590

Amazon.com

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 RX 590
Manufacturer AMD AMD
Year January 2012 November 2018
Code Name Tahiti Pro Polaris 30
Memory 3072 MB 8192 MB
Core Speed 800 MHz 1469 MHz
Memory Speed 5000 MHz 8000 MHz
Power (Max TDP) 200 watts 175 watts
Bandwidth 240000 MB/sec 262144 MB/sec
Texel Rate 89600 Mtexels/sec 211536 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 47008 Mpixels/sec
Unified Shaders 1792 2304
Texture Mapping Units 112 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 12 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. The number is worked out 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 DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 are processed per second. This is calculated 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 graphics 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 amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 7950 3GB

Amazon.com

Radeon RX 590

Amazon.com

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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