GeForce GTS 150 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 set the core speed at 725 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this specific card. It features 720 SPUs as well as 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 GTS 150		141 Watts
	Difference: 55 Watts (64%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 1GB should be a lot faster than the GeForce GTS 150 overall. (explain)

Radeon HD 6750 1GB		64000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 32000 (100%)

Texel Rate

The GeForce GTS 150 should be much (about 81%) better at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 21260 (81%)

Pixel Rate

The GeForce GTS 150 is a bit (more or less 2%) faster with regards to full screen anti-aliasing than the Radeon HD 6750 1GB, and also able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 240 (2%)

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 data (in units of MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 processed per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, 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 maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.