GeForce GTX 295 vs GeForce GTX 570

Intro

Compare those specs to the GeForce GTX 570, which comes with a core clock speed of 732 MHz and a GDDR5 memory frequency of 950 MHz. It also features a 320-bit bus, and makes use of a 40 nm design. It is comprised of 480 SPUs, 60 TAUs, and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 570		219 Watts
GeForce GTX 295		289 Watts
	Difference: 70 Watts (32%)

Memory Bandwidth

In theory, the GeForce GTX 295 should be 47% quicker than the GeForce GTX 570 overall, due to its greater data rate. (explain)

GeForce GTX 295		223776 MB/sec
GeForce GTX 570		152000 MB/sec
	Difference: 71776 (47%)

Texel Rate

The GeForce GTX 295 is quite a bit (about 110%) faster with regards to AF than the GeForce GTX 570. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 48240 (110%)

Pixel Rate

The GeForce GTX 295 should be a small bit (more or less 10%) better at full screen anti-aliasing than the GeForce GTX 570, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce GTX 570		29280 Mpixels/sec
	Difference: 2976 (10%)

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 maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video 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 maximum amount of pixels the graphics card can 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 outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.