GeForce GTS 450 vs GeForce GTX 460 1GB

Intro

Compare those specs to the GeForce GTX 460 1GB, which has GPU clock speed of 675 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also is comprised of 336 Stream Processors, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 54 Watts (51%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB should be much faster than the GeForce GTS 450 in general. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 57472 (100%)

Texel Rate

The GeForce GTX 460 1GB is quite a bit (approximately 51%) more effective at anisotropic filtering than the GeForce GTS 450. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 12744 (51%)

Pixel Rate

The GeForce GTX 460 1GB is quite a bit (about 72%) more effective at AA than the GeForce GTS 450, and also able to handle higher resolutions better. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 9072 (72%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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