Radeon R9 270X vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which makes use of a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 memory runs at a speed of 1425 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator 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 will be 2% quicker than the Radeon R9 270X overall, due to its greater bandwidth. (explain)

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

Texel Rate

The Radeon R9 380X should be much (approximately 55%) faster with regards to 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

If running with a high resolution is important to you, then the Radeon R9 270X is the winner, but it probably won't make a huge difference. (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 largest amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.