GeForce GTX 460 vs Radeon HD 4670 1GB

Intro

Compare that to the Radeon HD 4670 1GB, which has GPU clock speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 memory set to run at 1100 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 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		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

In theory, the GeForce GTX 460 will be 145% quicker than the Radeon HD 4670 1GB overall, because of its higher bandwidth. (explain)

GeForce GTX 460		86400 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 51200 (145%)

Texel Rate

The GeForce GTX 460 is much (approximately 58%) more effective at texture filtering than the Radeon HD 4670 1GB. (explain)

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

Pixel Rate

The GeForce GTX 460 is a lot (more or less 170%) more effective at FSAA than the Radeon HD 4670 1GB, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 10200 (170%)

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 transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock 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 applied per second.

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