GeForce GTX 275 vs GeForce GTX 295

Intro

Compare that to the GeForce GTX 295, which features core clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 240 SPUs along with 80 Texture Address Units and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275		219 Watts
GeForce GTX 295		289 Watts
	Difference: 70 Watts (32%)

Memory Bandwidth

The GeForce GTX 295 should theoretically perform a lot faster than the GeForce GTX 275 in general. (explain)

GeForce GTX 295		223776 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 96768 (76%)

Texel Rate

The GeForce GTX 295 should be a lot (approximately 82%) more effective at texture filtering than the GeForce GTX 275. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 41520 (82%)

Pixel Rate

The GeForce GTX 295 is much (approximately 82%) more effective at AA than the GeForce GTX 275, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 14532 (82%)

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video 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 number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.