GeForce GTX 660 Ti vs Radeon HD 4670 1GB

Intro

Compare all of that to the Radeon HD 4670 1GB, which has GPU core speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 memory running at 1100 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 Ti should in theory be a lot superior to the Radeon HD 4670 1GB in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 108800 (309%)

Texel Rate

The GeForce GTX 660 Ti is quite a bit (more or less 327%) better at anisotropic filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 78480 (327%)

Pixel Rate

The GeForce GTX 660 Ti should be much (more or less 266%) more effective at FSAA than the Radeon HD 4670 1GB, and also able to handle higher screen resolutions better. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 15960 (266%)

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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 are applied in one second. This figure is calculated 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.