Radeon R7 250X 2GB vs Radeon RX 6900 XT

Intro

Compare that to the Radeon RX 6900 XT, which has a GPU core clock speed of 1825 MHz, and 16384 MB of GDDR6 memory set to run at 2000 MHz through a 256-bit bus. It also features 5120 SPUs, 320 Texture Address Units, and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 205 Watts (216%)

Memory Bandwidth

Performance-wise, the Radeon RX 6900 XT should theoretically be much superior to the Radeon R7 250X 2GB in general. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 452288 (628%)

Texel Rate

The Radeon RX 6900 XT is quite a bit (approximately 1360%) more effective at anisotropic filtering than the Radeon R7 250X 2GB. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 544000 (1360%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6900 XT is the winner, and very much so. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 217600 (1360%)

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 (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.