Radeon R9 380 4G vs Radeon RX 7900 XTX

Intro

Compare those specifications to the Radeon RX 7900 XTX, which comes with GPU clock speed of 1855 MHz, and 24576 MB of GDDR6 RAM running at 2500 MHz through a 384-bit bus. It also features 6144 Stream Processors, 384 Texture Address Units, and 192 Raster Operation Units.

Display Graphs

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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

Theoretically speaking, the Radeon RX 7900 XTX should perform quite a bit faster than the Radeon R9 380 4G overall. (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 is a lot (about 556%) faster with regards to AF 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

If running with high levels of AA is important to you, then the Radeon RX 7900 XTX is superior to the Radeon R9 380 4G, by a large margin. (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 largest amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 are applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of 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 number of colour ROPs by the the core clock speed. 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 is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.