GeForce GTX 465 vs GeForce GTX 970M

Intro

Compare all of that to the GeForce GTX 970M, which makes use of a 28 nm design. nVidia has clocked the core speed at 924 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this card. It features 1280 SPUs along with 80 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

The GeForce GTX 465 should theoretically be a bit faster than the GeForce GTX 970M in general. (explain)

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

Texel Rate

The GeForce GTX 970M should be much (more or less 177%) faster with regards to 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 will be quite a bit (about 128%) better at full screen anti-aliasing than the GeForce GTX 465, and also should be 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 max amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.