Radeon HD 7770 vs Radeon RX 6500 XT

Intro

Compare all that to the Radeon RX 6500 XT, which uses a 6 nm design. AMD has set the core speed at 2200 MHz. The GDDR6 RAM runs at a speed of 2250 MHz on this particular model. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 6500 XT		107 Watts
	Difference: 27 Watts (34%)

Memory Bandwidth

The Radeon RX 6500 XT should in theory be quite a bit faster than the Radeon HD 7770 overall. (explain)

Radeon RX 6500 XT		147456 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 75456 (105%)

Texel Rate

The Radeon RX 6500 XT is quite a bit (about 252%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 100800 (252%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6500 XT is superior to the Radeon HD 7770, by far. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 54400 (340%)

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 MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core 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 the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount 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 drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.