GeForce GTS 450 1GB vs GeForce GTX 560

Intro

Compare that to the GeForce GTX 560, which makes use of a 40 nm design. nVidia has set the core speed at 810 MHz. The GDDR5 RAM is set to run at a frequency of 1001 MHz on this particular model. It features 336 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce GTX 560		150 Watts
	Difference: 44 Watts (42%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 should theoretically be a lot superior to the GeForce GTS 450 1GB overall. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 70400 (122%)

Texel Rate

The GeForce GTX 560 should be much (more or less 81%) better at texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 560		45360 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 20304 (81%)

Pixel Rate

The GeForce GTX 560 will be much (about 107%) more effective at anti-aliasing than the GeForce GTS 450 1GB, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 13392 (107%)

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 max amount of information (measured in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.