GeForce RTX 3080 12 GB vs Radeon HD 7770

Intro

Compare all that to the Radeon HD 7770, which has a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 270 Watts (338%)

Memory Bandwidth

The GeForce RTX 3080 12 GB should in theory perform much faster than the Radeon HD 7770 overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 862298 (1198%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (approximately 782%) more effective at AF than the Radeon HD 7770. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 312800 (782%)

Pixel Rate

The GeForce RTX 3080 12 GB is a lot (more or less 782%) faster with regards to FSAA than the Radeon HD 7770, and able to handle higher resolutions while still performing well. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 125120 (782%)

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 maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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.