GeForce GTX 750 vs Radeon HD 6770 1GB

Intro

Compare those specifications to the Radeon HD 6770 1GB, which features GPU clock speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also is comprised of 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 53 Watts (96%)

Memory Bandwidth

Theoretically, the GeForce GTX 750 should perform just a bit faster than the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 12800 (19%)

Texel Rate

The Radeon HD 6770 1GB is a small bit (more or less 10%) more effective at texture filtering than the GeForce GTX 750. (explain)

Radeon HD 6770 1GB		36000 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 3360 (10%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 750 is superior to the Radeon HD 6770 1GB, though only just barely. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 1920 (13%)

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 transferred over the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 maximum fill rate.