Radeon R7 250X vs Radeon RX 6600 XT

Intro

Compare all of that to the Radeon RX 6600 XT, which has a core clock frequency of 1968 MHz and a GDDR6 memory speed of 2000 MHz. It also features a 128-bit memory bus, and makes use of a 7 nm design. It features 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon RX 6600 XT		160 Watts
	Difference: 65 Watts (68%)

Memory Bandwidth

The Radeon RX 6600 XT should theoretically perform a lot faster than the Radeon R7 250X overall. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 190144 (264%)

Texel Rate

The Radeon RX 6600 XT will be a lot (more or less 530%) more effective at anisotropic filtering than the Radeon R7 250X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 211904 (530%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6600 XT is the winner, by a large margin. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R7 250X		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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card 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 card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.