GeForce GTX 275 vs GeForce GTX 470

Intro

Compare those specs to the GeForce GTX 470, which comes with GPU clock speed of 607 MHz, and 1280 MB of GDDR5 RAM running at 837 MHz through a 320-bit bus. It also is made up of 448 Stream Processors, 56 TAUs, and 40 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 470		215 Watts
GeForce GTX 275		219 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

The GeForce GTX 470, in theory, should be just a bit faster than the GeForce GTX 275 overall. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 6912 (5%)

Texel Rate

The GeForce GTX 275 will be quite a bit (about 49%) more effective at AF than the GeForce GTX 470. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 16648 (49%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 470 is the winner, by a large margin. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 6556 (37%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling 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 card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.