Geforce GTX 670 vs Radeon HD 6750 1GB

Intro

Compare all of that to the Radeon HD 6750 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this card. It features 720 SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Geforce GTX 670		170 Watts
	Difference: 84 Watts (98%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 670 should in theory be quite a bit superior to the Radeon HD 6750 1GB in general. (explain)

Geforce GTX 670		192000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 128000 (200%)

Texel Rate

The Geforce GTX 670 is a lot (about 293%) faster with regards to AF than the Radeon HD 6750 1GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 76380 (293%)

Pixel Rate

The Geforce GTX 670 will be much (more or less 152%) faster with regards to anti-aliasing than the Radeon HD 6750 1GB, and should be capable of handling higher resolutions better. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 17680 (152%)

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 information (counted in megabytes 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 clock speed. If it uses DDR type memory, it must 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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