GeForce GTX 260 216SP 55 nm vs GeForce GTX 970M

Intro

Compare those specifications to the GeForce GTX 970M, which features core clock speeds of 924 MHz on the GPU, and 1000 MHz on the 3072 MB of GDDR5 memory. It features 1280 SPUs as well as 80 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 96 Watts (128%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 216SP 55 nm will be 17% faster than the GeForce GTX 970M overall, because of its higher data rate. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 15888 (17%)

Texel Rate

The GeForce GTX 970M is a lot (approximately 78%) more effective at AF than the GeForce GTX 260 216SP 55 nm. (explain)

GeForce GTX 970M		73920 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 32448 (78%)

Pixel Rate

The GeForce GTX 970M will be a lot (about 175%) more effective at anti-aliasing than the GeForce GTX 260 216SP 55 nm, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 28224 (175%)

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 information (counted in MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.