GeForce GTS 250 1GB vs GeForce GTX 560 Ti 448

Intro

Compare those specs to the GeForce GTX 560 Ti 448, which uses a 40 nm design. nVidia has set the core speed at 732 MHz. The GDDR5 RAM runs at a frequency of 900 MHz on this model. It features 448 SPUs along with 56 TAUs and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB		145 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 65 Watts (45%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 Ti 448 should be a lot faster than the GeForce GTS 250 1GB overall. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 73600 (105%)

Texel Rate

The GeForce GTS 250 1GB is a little bit (about 15%) more effective at texture filtering than the GeForce GTX 560 Ti 448. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 6240 (15%)

Pixel Rate

The GeForce GTX 560 Ti 448 is a lot (approximately 148%) more effective at full screen anti-aliasing than the GeForce GTS 250 1GB, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 17472 (148%)

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 (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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.