Radeon R9 380 4G vs Radeon RX 7900 XTX

Intro

Compare all that to the Radeon RX 7900 XTX, which has a GPU core clock speed of 1855 MHz, and 24576 MB of GDDR6 RAM set to run at 2500 MHz through a 384-bit bus. It also features 6144 SPUs, 384 Texture Address Units, and 192 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 4G		190 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 165 Watts (87%)

Memory Bandwidth

In theory, the Radeon RX 7900 XTX is 439% faster than the Radeon R9 380 4G in general, because of its greater data rate. (explain)

Radeon RX 7900 XTX		983040 MB/sec
Radeon R9 380 4G		182400 MB/sec
	Difference: 800640 (439%)

Texel Rate

The Radeon RX 7900 XTX will be quite a bit (approximately 556%) more effective at texture filtering than the Radeon R9 380 4G. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
Radeon R9 380 4G		108640 Mtexels/sec
	Difference: 603680 (556%)

Pixel Rate

The Radeon RX 7900 XTX should be much (about 1047%) better at full screen anti-aliasing than the Radeon R9 380 4G, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
Radeon R9 380 4G		31040 Mpixels/sec
	Difference: 325120 (1047%)

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 information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.