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Radeon HD 7950 3GB vs Radeon RX 470


Intro

The Radeon HD 7950 3GB has a GPU clock speed of 800 MHz, and the 3072 MB of GDDR5 RAM is set to run at 1250 MHz through a 384-bit bus. It also is comprised of 1792 Stream Processors, 112 TAUs, and 32 ROPs.

Compare those specs to the Radeon RX 470, which comes with clock speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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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

In theory, the Radeon HD 7950 3GB should be a little 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 much (approximately 32%) faster with regards to anisotropic 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 small bit (more or less 16%) better at FSAA than the Radeon HD 7950 3GB, and should be capable of handling higher screen resolutions better. (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

Radeon HD 7950 3GB

Radeon RX 470

Specifications

Display 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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one 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 the texel rate, the better the graphics card will be at handling 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 that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Radeon HD 7950 3GB

Radeon RX 470

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