Radeon HD 7770 vs Radeon RX 6600

Intro

Compare those specifications to the Radeon RX 6600, which has GPU clock speed of 1626 MHz, and 8192 MB of GDDR6 memory set to run at 1750 MHz through a 128-bit bus. It also features 1792 Stream Processors, 112 TAUs, 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

Performance-wise, the Radeon RX 6600 should theoretically be a lot superior to the Radeon HD 7770 in general. (explain)

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

Texel Rate

The Radeon RX 6600 is much (about 355%) better at AF 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 much (about 550%) more effective at AA than the Radeon HD 7770, and also should be capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.