Radeon R9 270X vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which comes with GPU clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 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 RX 580		13630 points
Radeon R9 270X		6590 points
	Difference: 7040 (107%)

Zcash Mining Hash Rate

Radeon RX 580		315 Sol/s
Radeon R9 270X		177 Sol/s
	Difference: 138 (78%)

Ethereum Mining Hash Rate

Radeon RX 580		28 Mh/s
Radeon R9 270X		18 Mh/s
	Difference: 10 (56%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X		180 Watts
Radeon RX 580		185 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

Performance-wise, the Radeon RX 580 should in theory be quite a bit superior to the Radeon R9 270X overall. (explain)

Radeon RX 580		262144 MB/sec
Radeon R9 270X		179200 MB/sec
	Difference: 82944 (46%)

Texel Rate

The Radeon RX 580 should be quite a bit (more or less 126%) better at texture filtering than the Radeon R9 270X. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 101008 (126%)

Pixel Rate

The Radeon RX 580 will be much (about 26%) more effective at full screen anti-aliasing than the Radeon R9 270X, and also will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon R9 270X		32000 Mpixels/sec
	Difference: 8224 (26%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the interface 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 better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at 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 can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.