Radeon R9 M270X vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this specific card. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M380 should be much faster than the Radeon R9 M270X overall. (explain)

Radeon R9 M380		96000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The Radeon R9 M380 is quite a bit (approximately 38%) faster with regards to AF than the Radeon R9 M270X. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 11000 (38%)

Pixel Rate

The Radeon R9 M380 is a lot (about 38%) faster with regards to AA than the Radeon R9 M270X, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 4400 (38%)

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 (measured in MB per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high 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 number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.