Radeon R7 250 vs Radeon RX 6900 XT

Intro

Compare those specs to the Radeon RX 6900 XT, which has a GPU core clock speed of 1825 MHz, and 16384 MB of GDDR6 RAM set to run at 2000 MHz through a 256-bit bus. It also is comprised of 5120 Stream Processors, 320 TAUs, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 235 Watts (362%)

Memory Bandwidth

In theory, the Radeon RX 6900 XT is 612% faster than the Radeon R7 250 overall, due to its higher data rate. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 450688 (612%)

Texel Rate

The Radeon RX 6900 XT is quite a bit (about 2333%) better at texture filtering than the Radeon R7 250. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 560000 (2333%)

Pixel Rate

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

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 225600 (2820%)

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 largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 number of texture map elements (texels) that can be applied 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 the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.