Radeon R9 295X2 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which has GPU core speed of 926 MHz, and 4096 MB of GDDR5 RAM running at 1650 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, 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

As far as performance goes, the Radeon R9 295X2 should theoretically be much superior to the Radeon RX 470 4GB overall. (explain)

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

Texel Rate

The Radeon R9 295X2 should be a lot (about 202%) better at AF 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

The Radeon R9 295X2 should be a lot (about 340%) more effective at AA than the Radeon RX 470 4GB, and also will be able to handle higher screen resolutions better. (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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of 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.