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Radeon HD 7950 3GB vs Radeon RX 470


Intro

The Radeon HD 7950 3GB features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 384-bit bus, and uses a 28 nm design. It is comprised of 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon RX 470, which comes with core speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

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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 470 289 Sol/s
Radeon HD 7950 3GB 229 Sol/s
Difference: 60 (26%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Radeon HD 7950 3GB 200 Watts
Difference: 80 Watts (67%)

Memory Bandwidth

The Radeon HD 7950 3GB should in theory be a bit faster than the Radeon RX 470 overall. (explain)

Radeon HD 7950 3GB 240000 MB/sec
Radeon RX 470 211200 MB/sec
Difference: 28800 (14%)

Texel Rate

The Radeon RX 470 should be quite a bit (more or less 32%) more effective at texture filtering than the Radeon HD 7950 3GB. (explain)

Radeon RX 470 118528 Mtexels/sec
Radeon HD 7950 3GB 89600 Mtexels/sec
Difference: 28928 (32%)

Pixel Rate

The Radeon RX 470 should be a little bit (approximately 16%) better at AA than the Radeon HD 7950 3GB, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 470 29632 Mpixels/sec
Radeon HD 7950 3GB 25600 Mpixels/sec
Difference: 4032 (16%)

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 470

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 470
Manufacturer AMD AMD
Year January 2012 August 2016
Code Name Tahiti Pro Polaris 10
Memory 3072 MB 8192 MB
Core Speed 800 MHz 926 MHz
Memory Speed 5000 MHz 6600 MHz
Power (Max TDP) 200 watts 120 watts
Bandwidth 240000 MB/sec 211200 MB/sec
Texel Rate 89600 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 29632 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 information (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, 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 figure is calculated by multiplying the total amount of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 7950 3GB

Amazon.com

Radeon RX 470

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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