GeForce GTX 1080 vs GeForce GTX 650

Intro

Compare all that to the GeForce GTX 650, which uses a 28 nm design. nVidia has set the core frequency at 1058 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this particular model. It features 384 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 1080		21942 points
GeForce GTX 650		2263 points
	Difference: 19679 (870%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 1080		180 Watts
	Difference: 116 Watts (181%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 is 310% quicker than the GeForce GTX 650 overall, due to its greater bandwidth. (explain)

GeForce GTX 1080		327680 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 247680 (310%)

Texel Rate

The GeForce GTX 1080 will be much (more or less 659%) faster with regards to AF than the GeForce GTX 650. (explain)

GeForce GTX 1080		257120 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 223264 (659%)

Pixel Rate

The GeForce GTX 1080 will be quite a bit (approximately 508%) more effective at anti-aliasing than the GeForce GTX 650, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 1080		102848 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 85920 (508%)

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 (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated 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 drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.