Radeon R9 290X vs Radeon RX 6600

Intro

Compare all that to the Radeon RX 6600, which comes with core speeds of 1626 MHz on the GPU, and 1750 MHz on the 8192 MB of GDDR6 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon R9 290X		300 Watts
	Difference: 168 Watts (127%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 290X should be 40% faster than the Radeon RX 6600 overall, due to its greater bandwidth. (explain)

Radeon R9 290X		320000 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 90624 (40%)

Texel Rate

The Radeon RX 6600 will be a lot (approximately 29%) faster with regards to texture filtering than the Radeon R9 290X. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon R9 290X		140800 Mtexels/sec
	Difference: 41312 (29%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6600 is a better choice, by a large margin. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon R9 290X		51200 Mpixels/sec
	Difference: 52864 (103%)

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 (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the 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 maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.