Radeon R9 M270X vs Radeon RX 470 4GB

Intro

Compare those specifications to the Radeon RX 470 4GB, which uses a 14 nm design. AMD has set the core frequency at 926 MHz. The GDDR5 memory runs at a speed of 1650 MHz on this particular model. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon RX 470 4GB should in theory be a lot superior to the Radeon R9 M270X overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 139200 (193%)

Texel Rate

The Radeon RX 470 4GB will be quite a bit (more or less 309%) faster with regards to texture filtering than the Radeon R9 M270X. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 89528 (309%)

Pixel Rate

The Radeon RX 470 4GB should be much (about 155%) better at anti-aliasing than the Radeon R9 M270X, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 18032 (155%)

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 max amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.