GeForce GTX 460 2GB vs Radeon HD 4670 1GB

Intro

Compare those specs to the Radeon HD 4670 1GB, which comes with a core clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1100 MHz. It also features a 128-bit bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, 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 460 2GB		160 Watts
	Difference: 90 Watts (129%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 2GB should in theory be a lot superior to the Radeon HD 4670 1GB overall. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 80000 (227%)

Texel Rate

The GeForce GTX 460 2GB should be quite a bit (about 58%) faster with regards to anisotropic filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 2GB is superior to the Radeon HD 4670 1GB, and very much so. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 4670 1GB		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 maximum amount of data (in units of MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.