GeForce GTX 470 vs Radeon HD 4670 512MB

Intro

Compare that to the Radeon HD 4670 512MB, which comes with GPU clock speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory set to run at 1000 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 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 470		215 Watts
	Difference: 145 Watts (207%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should theoretically be much better than the Radeon HD 4670 512MB overall. (explain)

GeForce GTX 470		133920 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 101920 (319%)

Texel Rate

The GeForce GTX 470 is much (more or less 42%) faster with regards to texture filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 470		33992 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 9992 (42%)

Pixel Rate

The GeForce GTX 470 will be a lot (approximately 305%) better at full screen anti-aliasing than the Radeon HD 4670 512MB, and capable of handling higher resolutions better. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 18280 (305%)

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 maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.