Radeon R9 Nano vs Radeon RX 7900 XTX

Intro

Compare those specs to the Radeon RX 7900 XTX, which has a GPU core clock speed of 1855 MHz, and 24576 MB of GDDR6 RAM running at 2500 MHz through a 384-bit bus. It also is comprised of 6144 Stream Processors, 384 Texture Address Units, and 192 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 180 Watts (103%)

Memory Bandwidth

As far as performance goes, the Radeon RX 7900 XTX should theoretically be a lot better than the Radeon R9 Nano in general. (explain)

Radeon RX 7900 XTX		983040 MB/sec
Radeon R9 Nano		512000 MB/sec
	Difference: 471040 (92%)

Texel Rate

The Radeon RX 7900 XTX will be much (about 178%) better at AF than the Radeon R9 Nano. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
Radeon R9 Nano		256000 Mtexels/sec
	Difference: 456320 (178%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 7900 XTX is the winner, and very much so. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
Radeon R9 Nano		64000 Mpixels/sec
	Difference: 292160 (457%)

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 max amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.