GeForce GTS 450 vs GeForce GTX 260 216SP 55 nm

Intro

Compare all that to the GeForce GTX 260 216SP 55 nm, which features GPU clock speed of 576 MHz, and 896 MB of GDDR3 memory running at 999 MHz through a 448-bit bus. It also is comprised of 216 Stream Processors, 72 TAUs, 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 216SP 55 nm		171 Watts
	Difference: 65 Watts (61%)

Memory Bandwidth

Performance-wise, the GeForce GTX 260 216SP 55 nm should in theory be much superior to the GeForce GTS 450 in general. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 54160 (94%)

Texel Rate

The GeForce GTX 260 216SP 55 nm should be much (approximately 66%) more effective at anisotropic filtering than the GeForce GTS 450. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 16416 (66%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm is a lot (about 29%) more effective at anti-aliasing than the GeForce GTS 450, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 260 216SP 55 nm		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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.