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Radeon HD 4790 vs Radeon RX 560

Intro

The Radeon HD 4790 makes use of a 55 nm design. AMD has set the core speed at 600 MHz. The GDDR5 RAM works at a speed of 800 MHz on this card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Compare that to the Radeon RX 560, which features GPU core speed of 1175 MHz, and 4096 MB of GDDR5 memory set to run at 7000 MHz through a 128-bit bus. It also features 1024 Stream Processors, 64 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 560 should in theory be just a bit faster than the Radeon HD 4790 in general. (explain)

Radeon RX 560 114688 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 12288 (12%)

Texel Rate

The Radeon RX 560 should be a lot (about 292%) faster with regards to anisotropic filtering than the Radeon HD 4790. (explain)

Radeon RX 560 75200 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 56000 (292%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 560 is superior to the Radeon HD 4790, by a large margin. (explain)

Radeon RX 560 18800 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 9200 (96%)

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 4790

Amazon.com

Check prices at:

Radeon RX 560

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 4790 Radeon RX 560
Manufacturer AMD AMD
Year 2009 May 2017
Code Name RV790 Baffin
Memory 512 MB 4096 MB
Core Speed 600 MHz 1175 MHz
Memory Speed 3200 MHz 28000 MHz
Power (Max TDP) (Unknown) watts 80 watts
Bandwidth 102400 MB/sec 114688 MB/sec
Texel Rate 19200 Mtexels/sec 75200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 18800 Mpixels/sec
Unified Shaders 640(128x5) 1024
Texture Mapping Units 32 64
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 14 nm
Transistors 959 million 3000 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.6

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. 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 max fill rate.

Display Prices

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Radeon HD 4790

Amazon.com

Check prices at:

Radeon RX 560

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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