GeForce GTX 460 1GB vs Radeon HD 4670 512MB

Intro

Compare those specifications to the Radeon HD 4670 512MB, which comes with core clock speeds of 750 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory. It features 320(64x5) SPUs along with 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 512MB		70 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 90 Watts (129%)

Memory Bandwidth

In theory, the GeForce GTX 460 1GB should be 260% quicker than the Radeon HD 4670 512MB in general, due to its higher bandwidth. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 83200 (260%)

Texel Rate

The GeForce GTX 460 1GB will be much (about 58%) faster with regards to texture filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

The GeForce GTX 460 1GB is much (more or less 260%) better at FSAA than the Radeon HD 4670 512MB, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 1GB		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 max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, 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 number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.