Radeon R9 270 vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which features GPU core speed of 970 MHz, and 4096 MB of GDDR5 memory running at 1425 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 Raster Operation 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

Performance-wise, the Radeon R9 380X should in theory be just a bit better 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 a lot (approximately 72%) more effective at AF 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 should be a little bit (approximately 8%) better at FSAA than the Radeon R9 270, and also should be able to handle higher screen resolutions while still performing well. (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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus 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 bandwidth is, 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 can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.