GeForce GTS 450 vs GeForce GTX 260 Core 216

Intro

Compare that to the GeForce GTX 260 Core 216, which features GPU clock speed of 576 MHz, and 896 MB of GDDR3 memory set to run at 999 MHz through a 448-bit bus. It also is comprised of 216 Stream Processors, 72 Texture Address Units, and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 96 Watts (91%)

Memory Bandwidth

In theory, the GeForce GTX 260 Core 216 should be a lot faster than the GeForce GTS 450 in general. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 54160 (94%)

Texel Rate

The GeForce GTX 260 Core 216 will be quite a bit (more or less 66%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 16416 (66%)

Pixel Rate

The GeForce GTX 260 Core 216 is a lot (more or less 29%) more effective at full screen anti-aliasing than the GeForce GTS 450, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 260 Core 216		16128 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 3600 (29%)

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 max amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of 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 fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.