GeForce GT 450 (OEM) vs GeForce GTX 460 (OEM)

Intro

Compare those specs to the GeForce GTX 460 (OEM), which comes with a clock speed of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is comprised of 336 SPUs, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 44 Watts (42%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 (OEM) should in theory be just a bit superior to the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 12800 (13%)

Texel Rate

The GeForce GTX 460 (OEM) is much (about 92%) better at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 17440 (92%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 460 (OEM) is the winner, not by a very large margin though. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 1840 (10%)

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: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred past 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 the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of 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.