GeForce RTX 3080 vs Radeon HD 6750

Intro

Compare those specs to the Radeon HD 6750, which has a GPU core clock speed of 725 MHz, and 512 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also features 720 Stream Processors, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce RTX 3080		320 Watts
	Difference: 234 Watts (272%)

Memory Bandwidth

Performance-wise, the GeForce RTX 3080 should theoretically be a lot superior to the Radeon HD 6750 in general. (explain)

GeForce RTX 3080		778547 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 714547 (1116%)

Texel Rate

The GeForce RTX 3080 should be a lot (more or less 1401%) better at AF than the Radeon HD 6750. (explain)

GeForce RTX 3080		391680 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 365580 (1401%)

Pixel Rate

The GeForce RTX 3080 will be much (more or less 1092%) more effective at full screen anti-aliasing than the Radeon HD 6750, and will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce RTX 3080		138240 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 126640 (1092%)

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 max amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.