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Radeon HD 7950 3GB vs Radeon RX 570

Intro

The Radeon HD 7950 3GB comes with a core clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 384-bit bus, and makes use of a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Compare that to the Radeon RX 570, which has core clock speeds of 1168 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 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.

Zcash Mining Hash Rate

Radeon RX 570 298 Sol/s
Radeon HD 7950 3GB 229 Sol/s
Difference: 69 (30%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570 150 Watts
Radeon HD 7950 3GB 200 Watts
Difference: 50 Watts (33%)

Memory Bandwidth

In theory, the Radeon HD 7950 3GB should perform a bit faster than the Radeon RX 570 overall. (explain)

Radeon HD 7950 3GB 240000 MB/sec
Radeon RX 570 229376 MB/sec
Difference: 10624 (5%)

Texel Rate

The Radeon RX 570 will be a lot (more or less 67%) better at anisotropic filtering than the Radeon HD 7950 3GB. (explain)

Radeon RX 570 149504 Mtexels/sec
Radeon HD 7950 3GB 89600 Mtexels/sec
Difference: 59904 (67%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 570 is the winner, and very much so. (explain)

Radeon RX 570 37376 Mpixels/sec
Radeon HD 7950 3GB 25600 Mpixels/sec
Difference: 11776 (46%)

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

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Radeon RX 570

Amazon.com

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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 570
Manufacturer AMD AMD
Year January 2012 April 2017
Code Name Tahiti Pro Polaris 20
Memory 3072 MB 4096 MB
Core Speed 800 MHz 1168 MHz
Memory Speed 5000 MHz 7000 MHz
Power (Max TDP) 200 watts 150 watts
Bandwidth 240000 MB/sec 229376 MB/sec
Texel Rate 89600 Mtexels/sec 149504 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 37376 Mpixels/sec
Unified Shaders 1792 2048
Texture Mapping Units 112 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 14 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: Bandwidth is the max amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 7950 3GB

Amazon.com

Check prices at:

Radeon RX 570

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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