Radeon HD 7770 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 features 1792 SPUs, 112 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 6600		132 Watts
	Difference: 52 Watts (65%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 should perform a lot faster than the Radeon HD 7770 overall. (explain)

Radeon RX 6600		229376 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 157376 (219%)

Texel Rate

The Radeon RX 6600 should be a lot (about 355%) more effective at texture filtering than the Radeon HD 7770. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 142112 (355%)

Pixel Rate

The Radeon RX 6600 is a lot (approximately 550%) more effective at FSAA than the Radeon HD 7770, and will be able to handle higher resolutions more effectively. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 88064 (550%)

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 maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 can be applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.