GeForce RTX 3080 12 GB vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 295 Watts (536%)

Memory Bandwidth

Theoretically, the GeForce RTX 3080 12 GB should be much faster than the Radeon HD 7750 in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 862298 (1198%)

Texel Rate

The GeForce RTX 3080 12 GB will be much (approximately 1278%) more effective at anisotropic filtering than the Radeon HD 7750. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 327200 (1278%)

Pixel Rate

The GeForce RTX 3080 12 GB should be much (more or less 1003%) faster with regards to anti-aliasing than the Radeon HD 7750, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 128320 (1003%)

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 (in units of MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.