Radeon HD 4350 vs Radeon HD 6850

Intro

Compare those specs to the Radeon HD 6850, which has core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 960 SPUs as well as 48 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
Radeon HD 6850		127 Watts
	Difference: 105 Watts (477%)

Memory Bandwidth

Performance-wise, the Radeon HD 6850 should theoretically be quite a bit superior to the Radeon HD 4350 overall. (explain)

Radeon HD 6850		128000 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 120000 (1500%)

Texel Rate

The Radeon HD 6850 should be a lot (approximately 709%) faster with regards to AF than the Radeon HD 4350. (explain)

Radeon HD 6850		37200 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 32600 (709%)

Pixel Rate

The Radeon HD 6850 is much (about 978%) faster with regards to anti-aliasing than the Radeon HD 4350, and capable of handling higher screen resolutions better. (explain)

Radeon HD 6850		24800 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 22500 (978%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, 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 number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.