GeForce GTX 1080 vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which features a core clock frequency of 607 MHz and a GDDR5 memory speed of 802 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It features 352 SPUs, 44 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
GeForce GTX 465		200 Watts
	Difference: 20 Watts (11%)

Memory Bandwidth

The GeForce GTX 1080, in theory, should perform a lot faster than the GeForce GTX 465 overall. (explain)

GeForce GTX 1080		327680 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 225088 (219%)

Texel Rate

The GeForce GTX 1080 is quite a bit (about 863%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 1080		257120 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 230412 (863%)

Pixel Rate

The GeForce GTX 1080 will be much (about 429%) faster with regards to FSAA than the GeForce GTX 465, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 1080		102848 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 83424 (429%)

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 max amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out 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 it uses DDR5, multiply by 4 instead. The higher the card's 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 texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.