Radeon R9 295X2 vs Radeon RX 470 4GB

Intro

Compare those specifications to the Radeon RX 470 4GB, which uses a 14 nm design. AMD has clocked the core speed at 926 MHz. The GDDR5 RAM is set to run at a speed of 1650 MHz on this specific card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon R9 295X2		500 Watts
	Difference: 380 Watts (317%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 will be 203% quicker than the Radeon RX 470 4GB in general, because of its higher data rate. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon RX 470 4GB		211200 MB/sec
	Difference: 428800 (203%)

Texel Rate

The Radeon R9 295X2 will be quite a bit (about 202%) faster with regards to anisotropic filtering than the Radeon RX 470 4GB. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon RX 470 4GB		118528 Mtexels/sec
	Difference: 239808 (202%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 295X2 is a better choice, and very much so. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 100672 (340%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.