GeForce GTX 650 Ti 2GB vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which has a core clock frequency of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It is comprised of 400(80x5) SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 49 Watts (80%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 Ti 2GB should in theory be quite a bit superior to the Radeon HD 5670 in general. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 22400 (35%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be quite a bit (about 283%) more effective at texture filtering than the Radeon HD 5670. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 43892 (283%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 Ti 2GB is the winner, by far. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 8648 (139%)

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 (measured in megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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