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Radeon HD 5830 vs Radeon HD 5870

Intro

The Radeon HD 5830 has core speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 ROPs.

Compare those specifications to the Radeon HD 5870, which makes use of a 40 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM is set to run at a frequency of 1200 MHz on this specific model. It features 1600(320x5) SPUs as well as 80 TAUs and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830 175 Watts
Radeon HD 5870 188 Watts
Difference: 13 Watts (7%)

Memory Bandwidth

In theory, the Radeon HD 5870 should perform a small bit faster than the Radeon HD 5830 overall. (explain)

Radeon HD 5870 153600 MB/sec
Radeon HD 5830 128000 MB/sec
Difference: 25600 (20%)

Texel Rate

The Radeon HD 5870 should be a lot (about 52%) faster with regards to anisotropic filtering than the Radeon HD 5830. (explain)

Radeon HD 5870 68000 Mtexels/sec
Radeon HD 5830 44800 Mtexels/sec
Difference: 23200 (52%)

Pixel Rate

The Radeon HD 5870 is a lot (more or less 113%) more effective at full screen anti-aliasing than the Radeon HD 5830, and will be able to handle higher resolutions better. (explain)

Radeon HD 5870 27200 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 14400 (113%)

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 5870

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 5870
Manufacturer AMD AMD
Year February 25, 2010 September 23, 2009
Code Name Cypress LE Cypress XT
Memory 1024 MB 1024 MB
Core Speed 800 MHz 850 MHz
Memory Speed 4000 MHz 4800 MHz
Power (Max TDP) 175 watts 188 watts
Bandwidth 128000 MB/sec 153600 MB/sec
Texel Rate 44800 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 1120(224x5) 1600(320x5)
Texture Mapping Units 56 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 2154 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 5830

Amazon.com

Check prices at:

Radeon HD 5870

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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