Radeon R9 270 vs Radeon R9 380X

Intro

Compare all of that to the Radeon R9 380X, which has core speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

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 R9 380X		9519 points
Radeon R9 270		5943 points
	Difference: 3576 (60%)

Ethereum Mining Hash Rate

Radeon R9 380X		19 Mh/s
Radeon R9 270		15 Mh/s
	Difference: 4 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
Radeon R9 380X		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

The Radeon R9 380X should theoretically be a small bit faster than the Radeon R9 270 in general. (explain)

Radeon R9 380X		182400 MB/sec
Radeon R9 270		179200 MB/sec
	Difference: 3200 (2%)

Texel Rate

The Radeon R9 380X is quite a bit (approximately 72%) better at texture filtering than the Radeon R9 270. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 52160 (72%)

Pixel Rate

The Radeon R9 380X is a little bit (more or less 8%) more effective at anti-aliasing than the Radeon R9 270, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 2240 (8%)

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 information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card 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 Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.