Radeon R9 270X vs Radeon R9 380X

Intro

Compare all of that to the Radeon R9 380X, which features a GPU core clock speed of 970 MHz, and 4096 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 270X		6590 points
	Difference: 2929 (44%)

Ethereum Mining Hash Rate

Radeon R9 380X		19 Mh/s
Radeon R9 270X		18 Mh/s
	Difference: 1 (6%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X		180 Watts
Radeon R9 380X		190 Watts
	Difference: 10 Watts (6%)

Memory Bandwidth

In theory, the Radeon R9 380X should be a bit faster than the Radeon R9 270X overall. (explain)

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

Texel Rate

The Radeon R9 380X will be much (more or less 55%) faster with regards to texture filtering than the Radeon R9 270X. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 44160 (55%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 270X is superior to the Radeon R9 380X, though only just barely. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon R9 380X		31040 Mpixels/sec
	Difference: 960 (3%)

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 (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the 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 maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.