GeForce GTS 450 vs GeForce GTX 275

Intro

Compare those specifications to the GeForce GTX 275, which features a core clock frequency of 633 MHz and a GDDR3 memory speed of 1134 MHz. It also features a 448-bit bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 28 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce GTX 275		219 Watts
	Difference: 113 Watts (107%)

Memory Bandwidth

The GeForce GTX 275 should in theory be much faster than the GeForce GTS 450 in general. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 69280 (120%)

Texel Rate

The GeForce GTX 275 should be quite a bit (more or less 102%) faster with regards to anisotropic filtering than the GeForce GTS 450. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 25584 (102%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 275 is a better choice, and very much so. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 5196 (41%)

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 largest amount of information (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, 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 figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.