Radeon R9 270 vs Radeon RX 460 2GB

Intro

Compare that to the Radeon RX 460 2GB, which comes with GPU clock speed of 1090 MHz, and 2048 MB of GDDR5 RAM running at 1750 MHz through a 128-bit bus. It also is comprised of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon R9 270		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

The Radeon R9 270 should theoretically perform much faster than the Radeon RX 460 2GB in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 67200 (60%)

Texel Rate

The Radeon R9 270 is a little bit (more or less 18%) faster with regards to AF than the Radeon RX 460 2GB. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon RX 460 2GB		61040 Mtexels/sec
	Difference: 10960 (18%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 270 is a better choice, and very much so. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 11360 (65%)

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 information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it should 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.