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Radeon HD 5830 vs Radeon HD 6950

Intro

The Radeon HD 5830 features a GPU core speed of 800 MHz, and the 1024 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also is comprised of 1120(224x5) Stream Processors, 56 Texture Address Units, and 16 ROPs.

Compare that to the Radeon HD 6950, which has clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 1408 SPUs as well as 88 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830 175 Watts
Radeon HD 6950 200 Watts
Difference: 25 Watts (14%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 is 25% faster than the Radeon HD 5830 overall, because of its greater data rate. (explain)

Radeon HD 6950 160000 MB/sec
Radeon HD 5830 128000 MB/sec
Difference: 32000 (25%)

Texel Rate

The Radeon HD 6950 should be much (about 57%) better at anisotropic filtering than the Radeon HD 5830. (explain)

Radeon HD 6950 70400 Mtexels/sec
Radeon HD 5830 44800 Mtexels/sec
Difference: 25600 (57%)

Pixel Rate

The Radeon HD 6950 is quite a bit (approximately 100%) more effective at full screen anti-aliasing than the Radeon HD 5830, and able to handle higher screen resolutions better. (explain)

Radeon HD 6950 25600 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 12800 (100%)

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 5830

Amazon.com

Check prices at:

Radeon HD 6950

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 5830 Radeon HD 6950
Manufacturer AMD AMD
Year February 25, 2010 December 2010
Code Name Cypress LE Cayman Pro
Memory 1024 MB 1024 MB
Core Speed 800 MHz 800 MHz
Memory Speed 4000 MHz 5000 MHz
Power (Max TDP) 175 watts 200 watts
Bandwidth 128000 MB/sec 160000 MB/sec
Texel Rate 44800 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 1120(224x5) 1408
Texture Mapping Units 56 88
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 2640 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon HD 5830

Amazon.com

Check prices at:

Radeon HD 6950

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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