GeForce GTX 280 vs GeForce GTX 965M

Intro

Compare those specs to the GeForce GTX 965M, which features GPU core speed of 944 MHz, and 2048 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 1024 Stream Processors, 64 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 965M		60 Watts
GeForce GTX 280		236 Watts
	Difference: 176 Watts (293%)

Memory Bandwidth

Theoretically, the GeForce GTX 280 should be much faster than the GeForce GTX 965M overall. (explain)

GeForce GTX 280		141696 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 77696 (121%)

Texel Rate

The GeForce GTX 965M should be much (approximately 25%) better at anisotropic filtering than the GeForce GTX 280. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce GTX 280		48160 Mtexels/sec
	Difference: 12256 (25%)

Pixel Rate

The GeForce GTX 965M will be a lot (approximately 57%) better at full screen anti-aliasing than the GeForce GTX 280, and also capable of handling higher resolutions better. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce GTX 280		19264 Mpixels/sec
	Difference: 10944 (57%)

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 (counted in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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.