GeForce GTS 450 vs GeForce GTX 295

Intro

Compare all of that to the GeForce GTX 295, which comes with clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs as well as 80 Texture Address Units 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 295		289 Watts
	Difference: 183 Watts (173%)

Memory Bandwidth

Performance-wise, the GeForce GTX 295 should theoretically be a lot better than the GeForce GTS 450 in general. (explain)

GeForce GTX 295		223776 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 166048 (288%)

Texel Rate

The GeForce GTX 295 should be quite a bit (approximately 268%) better at anisotropic filtering than the GeForce GTS 450. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 67104 (268%)

Pixel Rate

The GeForce GTX 295 will be much (approximately 157%) better at FSAA than the GeForce GTS 450, and should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 19728 (157%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.