Radeon HD 4350 vs Radeon HD 6950

Intro

Compare those specifications to the Radeon HD 6950, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is made up of 1408 SPUs, 88 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
Radeon HD 6950		200 Watts
	Difference: 178 Watts (809%)

Memory Bandwidth

In theory, the Radeon HD 6950 will be 1900% quicker than the Radeon HD 4350 overall, because of its greater data rate. (explain)

Radeon HD 6950		160000 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 152000 (1900%)

Texel Rate

The Radeon HD 6950 should be much (about 1430%) faster with regards to AF than the Radeon HD 4350. (explain)

Radeon HD 6950		70400 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 65800 (1430%)

Pixel Rate

The Radeon HD 6950 should be a lot (more or less 1013%) faster with regards to full screen anti-aliasing than the Radeon HD 4350, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 23300 (1013%)

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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.