GeForce GTS 450 1GB vs GeForce GTX 750 Ti

Intro

Compare those specifications to the GeForce GTX 750 Ti, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1020 MHz. The GDDR5 memory runs at a speed of 1350 MHz on this card. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 46 Watts (77%)

Memory Bandwidth

The GeForce GTX 750 Ti, in theory, should perform a lot faster than the GeForce GTS 450 1GB overall. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 28672 (50%)

Texel Rate

The GeForce GTX 750 Ti should be quite a bit (more or less 63%) better at AF than the GeForce GTS 450 1GB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 15744 (63%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 750 Ti is a better choice, by far. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 3792 (30%)

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 moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.