GeForce GTX 465 vs GeForce GTX 980M

Intro

Compare those specifications to the GeForce GTX 980M, which makes use of a 28 nm design. nVidia has clocked the core speed at 1038 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this specific card. It features 1536 SPUs as well as 96 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
GeForce GTX 465		200 Watts
	Difference: 100 Watts (100%)

Memory Bandwidth

The GeForce GTX 980M, in theory, should perform quite a bit faster than the GeForce GTX 465 overall. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 25408 (25%)

Texel Rate

The GeForce GTX 980M is much (approximately 273%) better at AF than the GeForce GTX 465. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 72940 (273%)

Pixel Rate

The GeForce GTX 980M will be quite a bit (more or less 242%) better at FSAA than the GeForce GTX 465, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 47008 (242%)

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 max amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.