Radeon HD 6770 1GB vs Radeon RX 6500 XT

Intro

Compare all of that to the Radeon RX 6500 XT, which comes with a GPU core clock speed of 2200 MHz, and 4096 MB of GDDR6 RAM set to run at 2250 MHz through a 64-bit bus. It also is comprised of 1024 Stream Processors, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

The Radeon RX 6500 XT should in theory perform much faster than the Radeon HD 6770 1GB overall. (explain)

Radeon RX 6500 XT		147456 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 80256 (119%)

Texel Rate

The Radeon RX 6500 XT is quite a bit (about 291%) faster with regards to AF than the Radeon HD 6770 1GB. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 104800 (291%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6500 XT is a better choice, and very much so. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 56000 (389%)

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 maximum amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by its memory 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 amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 bandwidth is, the lower the ability to get to the max fill rate.