Radeon R9 270X vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which has a clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

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

As far as performance goes, the Radeon R9 380X should in theory be a little bit better than the Radeon R9 270X in general. (explain)

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

Texel Rate

The Radeon R9 380X is quite a bit (about 55%) more effective at AF 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, but only just. (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 largest amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total 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 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 the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.