Radeon HD 7950 3GB vs Radeon RX 6800

Intro

Compare those specifications to the Radeon RX 6800, which comes with core speeds of 1700 MHz on the GPU, and 2000 MHz on the 16384 MB of GDDR6 RAM. It features 3840 SPUs as well as 240 TAUs and 96 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB		200 Watts
Radeon RX 6800		250 Watts
	Difference: 50 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6800 should perform a lot faster than the Radeon HD 7950 3GB overall. (explain)

Radeon RX 6800		524288 MB/sec
Radeon HD 7950 3GB		240000 MB/sec
	Difference: 284288 (118%)

Texel Rate

The Radeon RX 6800 will be a lot (more or less 355%) more effective at anisotropic filtering than the Radeon HD 7950 3GB. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 318400 (355%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 6800 is the winner, by far. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 137600 (538%)

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 largest amount of information (in units of MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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