Radeon R9 380 2G vs Radeon R9 M270X

Intro

Compare all of that to the Radeon R9 M270X, which features a GPU core clock speed of 725 MHz, and 2048 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 380 2G should theoretically be a lot superior to the Radeon R9 M270X overall. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 110400 (153%)

Texel Rate

The Radeon R9 380 2G will be quite a bit (approximately 275%) faster with regards to anisotropic filtering than the Radeon R9 M270X. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 79640 (275%)

Pixel Rate

The Radeon R9 380 2G is much (more or less 168%) better at FSAA than the Radeon R9 M270X, and also will be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 19440 (168%)

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 (measured in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.