GeForce GT 130 vs Radeon HD 6750 1GB

Intro

Compare all that to the Radeon HD 6750 1GB, which features a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 130		75 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 11 Watts (15%)

Memory Bandwidth

In theory, the Radeon HD 6750 1GB is 433% quicker than the GeForce GT 130 overall, because of its higher bandwidth. (explain)

Radeon HD 6750 1GB		64000 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 52000 (433%)

Texel Rate

The Radeon HD 6750 1GB is a lot (more or less 118%) faster with regards to anisotropic filtering than the GeForce GT 130. (explain)

Radeon HD 6750 1GB		26100 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 14100 (118%)

Pixel Rate

The Radeon HD 6750 1GB will be quite a bit (approximately 45%) more effective at FSAA than the GeForce GT 130, and able to handle higher resolutions more effectively. (explain)

Radeon HD 6750 1GB		11600 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 3600 (45%)

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 (counted in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.