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Radeon HD 4770 vs Radeon HD 5830

Intro

The Radeon HD 4770 uses a 40 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory is set to run at a speed of 800 MHz on this particular model. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Compare all that to the Radeon HD 5830, which features clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1120(224x5) SPUs as well as 56 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770 80 Watts
Radeon HD 5830 175 Watts
Difference: 95 Watts (119%)

Memory Bandwidth

The Radeon HD 5830 should theoretically perform much faster than the Radeon HD 4770 overall. (explain)

Radeon HD 5830 128000 MB/sec
Radeon HD 4770 51200 MB/sec
Difference: 76800 (150%)

Texel Rate

The Radeon HD 5830 should be a lot (approximately 87%) more effective at anisotropic filtering than the Radeon HD 4770. (explain)

Radeon HD 5830 44800 Mtexels/sec
Radeon HD 4770 24000 Mtexels/sec
Difference: 20800 (87%)

Pixel Rate

The Radeon HD 5830 is a small bit (more or less 7%) better at AA than the Radeon HD 4770, and also able to handle higher screen resolutions better. (explain)

Radeon HD 5830 12800 Mpixels/sec
Radeon HD 4770 12000 Mpixels/sec
Difference: 800 (7%)

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 4770

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.

Specifications

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Model Radeon HD 4770 Radeon HD 5830
Manufacturer AMD AMD
Year Apr 28, 2009 February 25, 2010
Code Name RV740 Cypress LE
Memory 512 MB 1024 MB
Core Speed 750 MHz 800 MHz
Memory Speed 3200 MHz 4000 MHz
Power (Max TDP) 80 watts 175 watts
Bandwidth 51200 MB/sec 128000 MB/sec
Texel Rate 24000 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 640(128x5) 1120(224x5)
Texture Mapping Units 32 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 826 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 MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at 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 that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4770

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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