GeForce GTX 460 vs Radeon HD 4650 1GB

Intro

Compare those specifications to the Radeon HD 4650 1GB, which comes with core clock speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GTX 460		150 Watts
	Difference: 95 Watts (173%)

Memory Bandwidth

In theory, the GeForce GTX 460 is 286% quicker than the Radeon HD 4650 1GB in general, due to its higher data rate. (explain)

GeForce GTX 460		86400 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 64000 (286%)

Texel Rate

The GeForce GTX 460 is quite a bit (more or less 97%) better at AF than the Radeon HD 4650 1GB. (explain)

GeForce GTX 460		37800 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 18600 (97%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 is superior to the Radeon HD 4650 1GB, by a large margin. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 11400 (238%)

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 megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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