GeForce RTX 4090 vs Radeon RX 6500 XT

Intro

Compare those specs to the Radeon RX 6500 XT, which comes with core clock speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
GeForce RTX 4090		450 Watts
	Difference: 343 Watts (321%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 4090 is 607% quicker than the Radeon RX 6500 XT in general, due to its greater data rate. (explain)

GeForce RTX 4090		1042432 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 894976 (607%)

Texel Rate

The GeForce RTX 4090 is quite a bit (more or less 713%) faster with regards to texture filtering than the Radeon RX 6500 XT. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
Radeon RX 6500 XT		140800 Mtexels/sec
	Difference: 1003520 (713%)

Pixel Rate

The GeForce RTX 4090 should be quite a bit (more or less 459%) more effective at full screen anti-aliasing than the Radeon RX 6500 XT, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce RTX 4090		393360 Mpixels/sec
Radeon RX 6500 XT		70400 Mpixels/sec
	Difference: 322960 (459%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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