Radeon R9 280 vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which features a GPU core clock speed of 1257 MHz, and 8192 MB of GDDR5 memory running at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 TAUs, and 32 ROPs.

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 280		7961 points
	Difference: 5669 (71%)

Zcash Mining Hash Rate

Radeon RX 580		315 Sol/s
Radeon R9 280		183 Sol/s
	Difference: 132 (72%)

Ethereum Mining Hash Rate

Radeon RX 580		28 Mh/s
Radeon R9 280		22 Mh/s
	Difference: 6 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
Radeon R9 280		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

The Radeon RX 580, in theory, should be a little bit faster than the Radeon R9 280 overall. (explain)

Radeon RX 580		262144 MB/sec
Radeon R9 280		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The Radeon RX 580 is quite a bit (about 73%) more effective at anisotropic filtering than the Radeon R9 280. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon R9 280		104496 Mtexels/sec
	Difference: 76512 (73%)

Pixel Rate

The Radeon RX 580 is quite a bit (approximately 35%) more effective at full screen anti-aliasing than the Radeon R9 280, and also capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon R9 280		29856 Mpixels/sec
	Difference: 10368 (35%)

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 megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 processed in one second. This number is calculated by multiplying the total number 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.