GeForce GTX 295 vs GeForce GTX 560

Intro

Compare that to the GeForce GTX 560, which makes use of a 40 nm design. nVidia has set the core frequency at 810 MHz. The GDDR5 RAM works at a frequency of 1001 MHz on this particular card. It features 336 SPUs as well as 56 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560		150 Watts
GeForce GTX 295		289 Watts
	Difference: 139 Watts (93%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 295 will be 75% faster than the GeForce GTX 560 in general, because of its higher data rate. (explain)

GeForce GTX 295		223776 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 95648 (75%)

Texel Rate

The GeForce GTX 295 is quite a bit (more or less 103%) more effective at anisotropic filtering than the GeForce GTX 560. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 46800 (103%)

Pixel Rate

The GeForce GTX 295 should be a lot (approximately 24%) better at anti-aliasing than the GeForce GTX 560, and also will be able to handle higher screen resolutions better. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce GTX 560		25920 Mpixels/sec
	Difference: 6336 (24%)

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 information (measured in megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.