Radeon R9 270X vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which comes with GPU core speed of 970 MHz, and 4096 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also features 2048 Stream Processors, 128 Texture Address Units, 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 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 will be 2% faster than the Radeon R9 270X in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon R9 380X should be quite a bit (more or less 55%) better at anisotropic filtering than the Radeon R9 270X. (explain)

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

Pixel Rate

The Radeon R9 270X will be a little bit (more or less 3%) more effective at AA than the Radeon R9 380X, and will be able to handle higher resolutions better. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of 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 number of ROPs by the clock speed of the card. 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.