GeForce GTX 465 vs GeForce GTX 970M

Intro

Compare those specs to the GeForce GTX 970M, which comes with a clock frequency of 924 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
GeForce GTX 465		200 Watts
	Difference: 125 Watts (167%)

Memory Bandwidth

Performance-wise, the GeForce GTX 465 should in theory be a bit better than the GeForce GTX 970M overall. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 6592 (7%)

Texel Rate

The GeForce GTX 970M will be much (more or less 177%) better at AF than the GeForce GTX 465. (explain)

GeForce GTX 970M		73920 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 47212 (177%)

Pixel Rate

The GeForce GTX 970M should be much (approximately 128%) better at FSAA than the GeForce GTX 465, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 24928 (128%)

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 information (measured in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.