GeForce GTX 275 vs GeForce GTX 460 2GB

Intro

Compare those specs to the GeForce GTX 460 2GB, which has a GPU core clock speed of 675 MHz, and 2048 MB of GDDR5 memory running at 900 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB		160 Watts
GeForce GTX 275		219 Watts
	Difference: 59 Watts (37%)

Memory Bandwidth

In theory, the GeForce GTX 275 should be a little bit faster than the GeForce GTX 460 2GB overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 11808 (10%)

Texel Rate

The GeForce GTX 275 is quite a bit (more or less 34%) better at anisotropic filtering than the GeForce GTX 460 2GB. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 12840 (34%)

Pixel Rate

The GeForce GTX 460 2GB will be quite a bit (more or less 22%) faster with regards to full screen anti-aliasing than the GeForce GTX 275, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 3876 (22%)

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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.