GeForce GTX 275 vs GeForce GTX 460 (OEM)

Intro

Compare those specs to the GeForce GTX 460 (OEM), which comes with a core clock speed of 650 MHz and a GDDR5 memory speed of 850 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is made up of 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
GeForce GTX 275		219 Watts
	Difference: 69 Watts (46%)

Memory Bandwidth

The GeForce GTX 275 should in theory perform a little bit faster than the GeForce GTX 460 (OEM) overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 18208 (17%)

Texel Rate

The GeForce GTX 275 will be a lot (more or less 39%) better at texture filtering than the GeForce GTX 460 (OEM). (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 14240 (39%)

Pixel Rate

The GeForce GTX 460 (OEM) is just a bit (more or less 17%) better at full screen anti-aliasing than the GeForce GTX 275, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 3076 (17%)

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 maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.