Radeon R9 380X vs Radeon RX 480

Intro

Compare that to the Radeon RX 480, which has GPU core speed of 1120 MHz, and 8192 MB of GDDR5 memory running at 2000 MHz through a 256-bit bus. It also is made up of 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 480		13349 points
Radeon R9 380X		9519 points
	Difference: 3830 (40%)

Ethereum Mining Hash Rate

Radeon RX 480		27 Mh/s
Radeon R9 380X		19 Mh/s
	Difference: 8 (42%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480		150 Watts
Radeon R9 380X		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 480 will be 44% quicker than the Radeon R9 380X overall, due to its greater data rate. (explain)

Radeon RX 480		262144 MB/sec
Radeon R9 380X		182400 MB/sec
	Difference: 79744 (44%)

Texel Rate

The Radeon RX 480 will be a lot (more or less 30%) better at texture filtering than the Radeon R9 380X. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon R9 380X		124160 Mtexels/sec
	Difference: 37120 (30%)

Pixel Rate

The Radeon RX 480 will be a little bit (about 15%) faster with regards to AA than the Radeon R9 380X, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon R9 380X		31040 Mpixels/sec
	Difference: 4800 (15%)

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 information (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, 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 worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.