GeForce GTX 650 vs GeForce RTX 3080 12 GB

Intro

Compare those specifications to the GeForce RTX 3080 12 GB, which has a clock speed of 1260 MHz and a GDDR6X memory speed of 1188 MHz. It also uses a 384-bit memory bus, and uses a 8 nm design. It is made up of 8960 SPUs, 280 Texture Address Units, and 112 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 286 Watts (447%)

Memory Bandwidth

The GeForce RTX 3080 12 GB, in theory, should perform much faster than the GeForce GTX 650 overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 854298 (1068%)

Texel Rate

The GeForce RTX 3080 12 GB should be quite a bit (about 942%) more effective at texture filtering than the GeForce GTX 650. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 318944 (942%)

Pixel Rate

The GeForce RTX 3080 12 GB is much (more or less 734%) more effective at anti-aliasing than the GeForce GTX 650, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 124192 (734%)

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 largest amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.