Radeon HD 7950 3GB vs Radeon RX 6600

Intro

Compare those specifications to the Radeon RX 6600, which comes with GPU clock speed of 1626 MHz, and 8192 MB of GDDR6 RAM running at 1750 MHz through a 128-bit bus. It also is made up of 1792 Stream Processors, 112 TAUs, 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

Performance-wise, the Radeon HD 7950 3GB should theoretically be a small bit better than the Radeon RX 6600 overall. (explain)

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

Texel Rate

The Radeon RX 6600 should be quite a bit (more or less 103%) better at anisotropic 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 should be quite a bit (approximately 307%) better at full screen anti-aliasing than the Radeon HD 7950 3GB, and will be able to handle higher screen resolutions while still performing well. (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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video 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 maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.