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Radeon HD 5830 vs Radeon RX 460

Intro

The Radeon HD 5830 comes with a GPU clock speed of 800 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1000 MHz through a 256-bit bus. It also features 1120(224x5) SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the Radeon RX 460, which makes use of a 14 nm design. AMD has set the core frequency at 1090 MHz. The GDDR5 RAM is set to run at a speed of 1750 MHz on this card. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
Radeon HD 5830 175 Watts
Difference: 100 Watts (133%)

Memory Bandwidth

Performance-wise, the Radeon HD 5830 should theoretically be a small bit superior to the Radeon RX 460 in general. (explain)

Radeon HD 5830 128000 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 16000 (14%)

Texel Rate

The Radeon RX 460 will be quite a bit (about 36%) more effective at AF than the Radeon HD 5830. (explain)

Radeon RX 460 61040 Mtexels/sec
Radeon HD 5830 44800 Mtexels/sec
Difference: 16240 (36%)

Pixel Rate

The Radeon RX 460 will be much (more or less 36%) more effective at full screen anti-aliasing than the Radeon HD 5830, and able to handle higher screen resolutions while still performing well. (explain)

Radeon RX 460 17440 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 4640 (36%)

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 5830

Radeon RX 460

Specifications

Display Specifications

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Model Radeon HD 5830 Radeon RX 460
Manufacturer AMD AMD
Year February 25, 2010 August 2016
Code Name Cypress LE Polaris 11
Memory 1024 MB 4096 MB
Core Speed 800 MHz 1090 MHz
Memory Speed 4000 MHz 7000 MHz
Power (Max TDP) 175 watts 75 watts
Bandwidth 128000 MB/sec 112000 MB/sec
Texel Rate 44800 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 1120(224x5) 896
Texture Mapping Units 56 56
Render Output Units 16 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: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Radeon HD 5830

Radeon RX 460

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