GeForce GTS 450 vs GeForce GTX 295

Intro

Compare those specifications to the GeForce GTX 295, which has a clock frequency of 576 MHz and a GDDR3 memory speed of 999 MHz. It also uses a 448-bit memory bus, and makes use of 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 295		289 Watts
	Difference: 183 Watts (173%)

Memory Bandwidth

The GeForce GTX 295, in theory, should be much faster 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 (about 268%) more effective at AF 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 is much (more or less 157%) more effective at anti-aliasing than the GeForce GTS 450, and able to handle higher resolutions without losing too much performance. (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 largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. 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 bandwidth is, the lower the ability to reach the max fill rate.