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Radeon HD 4350 vs Radeon HD 5830

Intro

The Radeon HD 4350 has a GPU core clock speed of 575 MHz, and the 512 MB of DDR2 memory runs at 500 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Compare those specifications to the Radeon HD 5830, which features a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is made up of 1120(224x5) Stream Processors, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
Radeon HD 5830		175 Watts
	Difference: 153 Watts (695%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5830 should be a lot faster than the Radeon HD 4350 overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 120000 (1500%)

Texel Rate

The Radeon HD 5830 will be quite a bit (about 874%) faster with regards to anisotropic filtering than the Radeon HD 4350. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 40200 (874%)

Pixel Rate

The Radeon HD 5830 is quite a bit (about 457%) more effective at anti-aliasing than the Radeon HD 4350, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 10500 (457%)

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 4350

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Radeon HD 5830

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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 4350	Radeon HD 5830
Manufacturer	AMD	AMD
Year	Sep 30, 2008	February 25, 2010
Code Name	RV710	Cypress LE
Memory	512 MB	1024 MB
Core Speed	575 MHz	800 MHz
Memory Speed	1000 MHz	4000 MHz
Power (Max TDP)	22 watts	175 watts
Bandwidth	8000 MB/sec	128000 MB/sec
Texel Rate	4600 Mtexels/sec	44800 Mtexels/sec
Pixel Rate	2300 Mpixels/sec	12800 Mpixels/sec
Unified Shaders	80(16x5)	1120(224x5)
Texture Mapping Units	8	56
Render Output Units	4	16
Bus Type	DDR2	GDDR5
Bus Width	64-bit	256-bit
Fab Process	55 nm	40 nm
Transistors	242 million	2154 million
Bus	PCIe 2.0 x16, PCI	PCIe 2.1 x16
DirectX Version	DirectX 10.1	DirectX 11
OpenGL Version	OpenGL 3.0	OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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