Radeon HD 5770 vs Radeon HD 5830

Intro

The Radeon HD 5770 has a GPU core clock speed of 850 MHz, and the 1024 MB of GDDR5 memory runs at 1200 MHz through a 128-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare those specs to the Radeon HD 5830, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also is comprised of 1120(224x5) Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

Radeon HD 5770 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5830 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	Radeon HD 5770	Radeon HD 5830
Manufacturer	ATi	ATi
Year	October 13, 2009	February 25, 2010
Code Name	Juniper XT	Cypress LE
Fab Process	40 nm	40 nm
Bus	PCIe 2.1 x16	PCIe 2.1 x16
Memory	1024 MB	1024 MB
Core Speed	850 MHz	800 MHz
Shader Speed	N/A MHz	(N/A) MHz
Memory Speed	1200 MHz (4800 MHz effective)	1000 MHz (4000 MHz effective)
Unified Shaders	800(160x5)	1120(224x5)
Texture Mapping Units	40	56
Render Output Units	16	16
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	256-bit
DirectX Version	DirectX 11	DirectX 11
OpenGL Version	OpenGL 3.2	OpenGL 3.2
Power (Max TDP)	108 watts	175 watts
Shader Model	5.0	5.0
Bandwidth	76800 MB/sec	128000 MB/sec
Texel Rate	34000 Mtexels/sec	44800 Mtexels/sec
Pixel Rate	13600 Mpixels/sec	12800 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.