Radeon HD 7950 3GB vs Radeon RX 6600

Intro

Compare those specifications to the Radeon RX 6600, which makes use of a 7 nm design. AMD has set the core speed at 1626 MHz. The GDDR6 RAM runs at a frequency of 1750 MHz on this card. It features 1792 SPUs along with 112 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 68 Watts (52%)

Memory Bandwidth

In theory, the Radeon HD 7950 3GB is 5% faster than the Radeon RX 6600 overall, due to its higher bandwidth. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 10624 (5%)

Texel Rate

The Radeon RX 6600 is much (about 103%) more effective at texture filtering than the Radeon HD 7950 3GB. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 92512 (103%)

Pixel Rate

The Radeon RX 6600 will be a lot (about 307%) faster with regards to FSAA than the Radeon HD 7950 3GB, and capable of handling higher resolutions more effectively. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 78464 (307%)

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 max amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. 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 quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.