GeForce GTX 275 vs GeForce GTX 960M

Intro

Compare those specifications to the GeForce GTX 960M, which has a core clock frequency of 1096 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960M		65 Watts
GeForce GTX 275		219 Watts
	Difference: 154 Watts (237%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 should be 98% faster than the GeForce GTX 960M in general, because of its higher bandwidth. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 960M		64000 MB/sec
	Difference: 63008 (98%)

Texel Rate

The GeForce GTX 275 should be a little bit (approximately 16%) faster with regards to AF than the GeForce GTX 960M. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 960M		43840 Mtexels/sec
	Difference: 6800 (16%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 275 is the winner, but it probably won't make a huge difference. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTX 960M		17536 Mpixels/sec
	Difference: 188 (1%)

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 largest amount of information (measured in MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.