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Radeon HD 4830 512MB vs Radeon HD 5830

Intro

The Radeon HD 4830 512MB features clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 5830, which uses a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this model. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB 95 Watts
Radeon HD 5830 175 Watts
Difference: 80 Watts (84%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be quite a bit better than the Radeon HD 4830 512MB overall. (explain)

Radeon HD 5830 128000 MB/sec
Radeon HD 4830 512MB 57600 MB/sec
Difference: 70400 (122%)

Texel Rate

The Radeon HD 5830 will be a lot (approximately 143%) more effective at AF than the Radeon HD 4830 512MB. (explain)

Radeon HD 5830 44800 Mtexels/sec
Radeon HD 4830 512MB 18400 Mtexels/sec
Difference: 26400 (143%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5830 is the winner, and very much so. (explain)

Radeon HD 5830 12800 Mpixels/sec
Radeon HD 4830 512MB 9200 Mpixels/sec
Difference: 3600 (39%)

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 4830 512MB

Amazon.com

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Radeon HD 5830

Amazon.com

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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 4830 512MB Radeon HD 5830
Manufacturer AMD AMD
Year Oct 21, 2008 February 25, 2010
Code Name RV770 LE Cypress LE
Memory 512 MB 1024 MB
Core Speed 575 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 95 watts 175 watts
Bandwidth 57600 MB/sec 128000 MB/sec
Texel Rate 18400 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 9200 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 640(128x5) 1120(224x5)
Texture Mapping Units 32 56
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 956 million 2154 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 4830 512MB

Amazon.com

Check prices at:

Radeon HD 5830

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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