GeForce GTX 275 vs GeForce GTX 880M

Intro

Compare all of that to the GeForce GTX 880M, which has a clock speed of 954 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is made up of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 275		219 Watts
	Difference: 89 Watts (68%)

Memory Bandwidth

The GeForce GTX 880M, in theory, should perform just a bit faster than the GeForce GTX 275 in general. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 992 (1%)

Texel Rate

The GeForce GTX 880M is a lot (more or less 141%) better at AF than the GeForce GTX 275. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 71472 (141%)

Pixel Rate

The GeForce GTX 880M should be a lot (more or less 72%) more effective at AA than the GeForce GTX 275, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 12804 (72%)

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 maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, 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 the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.