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Radeon HD 5850 vs Radeon RX 460

Intro

The Radeon HD 5850 has a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 1440(288x5) SPUs, 72 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon RX 460, which has a GPU core clock speed of 1090 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also features 896 Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
Radeon HD 5850 151 Watts
Difference: 76 Watts (101%)

Memory Bandwidth

In theory, the Radeon HD 5850 will be 14% quicker than the Radeon RX 460 in general, because of its higher data rate. (explain)

Radeon HD 5850 128000 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 16000 (14%)

Texel Rate

The Radeon RX 460 will be a small bit (more or less 17%) more effective at anisotropic filtering than the Radeon HD 5850. (explain)

Radeon RX 460 61040 Mtexels/sec
Radeon HD 5850 52200 Mtexels/sec
Difference: 8840 (17%)

Pixel Rate

The Radeon HD 5850 is quite a bit (approximately 33%) faster with regards to AA than the Radeon RX 460, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 5850 23200 Mpixels/sec
Radeon RX 460 17440 Mpixels/sec
Difference: 5760 (33%)

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 5850

Amazon.com

Radeon RX 460

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 5850 Radeon RX 460
Manufacturer AMD AMD
Year September 30, 2009 August 2016
Code Name Cypress PRO Polaris 11
Memory 1024 MB 4096 MB
Core Speed 725 MHz 1090 MHz
Memory Speed 4000 MHz 7000 MHz
Power (Max TDP) 151 watts 75 watts
Bandwidth 128000 MB/sec 112000 MB/sec
Texel Rate 52200 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 23200 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 1440(288x5) 896
Texture Mapping Units 72 56
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 14 nm
Transistors 2154 million 3000 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 3.2 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

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