Radeon HD 6770 1GB vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which features core speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 RAM. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator 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

Theoretically speaking, the Radeon RX 6500 XT will be 119% faster than the Radeon HD 6770 1GB in general, because of its higher bandwidth. (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 will be much (more or less 291%) more effective at texture filtering 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

The Radeon RX 6500 XT is much (more or less 389%) better at full screen anti-aliasing than the Radeon HD 6770 1GB, and able to handle higher resolutions without losing too much performance. (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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most 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 calculated 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.