Radeon HD 5870 vs Radeon HD 6750 1GB

Intro

Compare those specifications to the Radeon HD 6750 1GB, which has core clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 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 1GB		86 Watts
Radeon HD 5870		188 Watts
	Difference: 102 Watts (119%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 will be 140% quicker than the Radeon HD 6750 1GB in general, due to its higher data rate. (explain)

Radeon HD 5870		153600 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon HD 5870 will be much (about 161%) better at texture filtering than the Radeon HD 6750 1GB. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 41900 (161%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5870 is superior to the Radeon HD 6750 1GB, and very much so. (explain)

Radeon HD 5870		27200 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 15600 (134%)

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 largest amount of data (in units of MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.