Radeon HD 5830 vs Radeon HD 6750

Intro

Compare that to the Radeon HD 6750, which features core clock speeds of 725 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 720 SPUs along with 36 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon HD 5830		175 Watts
	Difference: 89 Watts (103%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5830 is 100% quicker than the Radeon HD 6750 overall, due to its higher data rate. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The Radeon HD 5830 will be much (approximately 72%) better at AF than the Radeon HD 6750. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 18700 (72%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5830 is a better choice, not by a very large margin though. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 1200 (10%)

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 max amount of information (measured in MB 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 speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.