Radeon R9 295X2 vs Radeon RX 580

Intro

Compare that to the Radeon RX 580, which comes with a clock frequency of 1257 MHz and a GDDR5 memory speed of 2000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 295X2		21205 points
Radeon RX 580		13630 points
	Difference: 7575 (56%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
Radeon R9 295X2		500 Watts
	Difference: 315 Watts (170%)

Memory Bandwidth

As far as performance goes, the Radeon R9 295X2 should in theory be a lot superior to the Radeon RX 580 overall. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 377856 (144%)

Texel Rate

The Radeon R9 295X2 will be a lot (more or less 98%) faster with regards to texture filtering than the Radeon RX 580. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon RX 580		181008 Mtexels/sec
	Difference: 177328 (98%)

Pixel Rate

The Radeon R9 295X2 is a lot (approximately 224%) more effective at anti-aliasing than the Radeon RX 580, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 90080 (224%)

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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.