Radeon R9 380X vs Radeon RX 460 2GB

Intro

Compare those specifications to the Radeon RX 460 2GB, which features GPU core speed of 1090 MHz, and 2048 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon R9 380X		190 Watts
	Difference: 115 Watts (153%)

Memory Bandwidth

In theory, the Radeon R9 380X should be 63% faster than the Radeon RX 460 2GB in general, because of its greater bandwidth. (explain)

Radeon R9 380X		182400 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 70400 (63%)

Texel Rate

The Radeon R9 380X will be quite a bit (about 103%) better at texture filtering than the Radeon RX 460 2GB. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon RX 460 2GB		61040 Mtexels/sec
	Difference: 63120 (103%)

Pixel Rate

The Radeon R9 380X is a lot (approximately 78%) faster with regards to full screen anti-aliasing than the Radeon RX 460 2GB, and capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 13600 (78%)

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 maximum amount of data (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.