GeForce 825M vs GeForce RTX 2080 SUPER

Intro

Compare those specifications to the GeForce RTX 2080 SUPER, which has GPU clock speed of 1650 MHz, and 8192 MB of GDDR6 memory set to run at 1937 MHz through a 256-bit bus. It also is made up of 3072 Stream Processors, 192 TAUs, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce RTX 2080 SUPER		250 Watts
	Difference: 217 Watts (658%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 2080 SUPER should be 3427% faster than the GeForce 825M overall, due to its higher data rate. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 493504 (3427%)

Texel Rate

The GeForce RTX 2080 SUPER is quite a bit (approximately 2229%) more effective at anisotropic filtering than the GeForce 825M. (explain)

GeForce RTX 2080 SUPER		316800 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 303200 (2229%)

Pixel Rate

The GeForce RTX 2080 SUPER is much (more or less 1453%) faster with regards to anti-aliasing than the GeForce 825M, and able to handle higher screen resolutions while still performing well. (explain)

GeForce RTX 2080 SUPER		105600 Mpixels/sec
GeForce 825M		6800 Mpixels/sec
	Difference: 98800 (1453%)

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 data (in units of megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total 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 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 write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.