GeForce GTX 460 2GB vs Radeon HD 4670 512MB

Intro

Compare that to the Radeon HD 4670 512MB, which features GPU core speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 90 Watts (129%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 2GB is 260% faster than the Radeon HD 4670 512MB in general, because of its greater data rate. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 83200 (260%)

Texel Rate

The GeForce GTX 460 2GB should be much (about 58%) faster with regards to AF than the Radeon HD 4670 512MB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 2GB is a better choice, by far. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 15600 (260%)

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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once 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, 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 number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher 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 the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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.