Radeon HD 7770 vs Radeon RX 6600 XT

Intro

Compare that to the Radeon RX 6600 XT, which features core speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 memory. It features 2048 SPUs along with 128 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 6600 XT		160 Watts
	Difference: 80 Watts (100%)

Memory Bandwidth

The Radeon RX 6600 XT should in theory perform much faster than the Radeon HD 7770 in general. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 190144 (264%)

Texel Rate

The Radeon RX 6600 XT is quite a bit (more or less 530%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 211904 (530%)

Pixel Rate

The Radeon RX 6600 XT is quite a bit (more or less 687%) better at full screen anti-aliasing than the Radeon HD 7770, and also will be able to handle higher resolutions more effectively. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 109952 (687%)

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 data (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated 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 lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.