GeForce GTX 750 Ti vs Radeon HD 6770 1GB

Intro

Compare that to the Radeon HD 6770 1GB, which has a GPU core clock speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also is made up 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 Ti		60 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 48 Watts (80%)

Memory Bandwidth

The GeForce GTX 750 Ti should in theory be quite a bit faster than the Radeon HD 6770 1GB overall. (explain)

GeForce GTX 750 Ti		86400 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 19200 (29%)

Texel Rate

The GeForce GTX 750 Ti will be a bit (more or less 13%) faster with regards to texture filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 4800 (13%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 750 Ti is a better choice, but it probably won't make a huge difference. (explain)

GeForce GTX 750 Ti		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: Bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units 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 chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.