Radeon HD 7850 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 RAM running at 2000 MHz through a 256-bit bus. It also 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 RX 580		13630 points
Radeon HD 7850		5200 points
	Difference: 8430 (162%)

Zcash Mining Hash Rate

Radeon RX 580		315 Sol/s
Radeon HD 7850		171 Sol/s
	Difference: 144 (84%)

Ethereum Mining Hash Rate

Radeon RX 580		28 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 15 (115%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon RX 580		185 Watts
	Difference: 55 Watts (42%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 580 should be 71% quicker than the Radeon HD 7850 in general, because of its greater data rate. (explain)

Radeon RX 580		262144 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 108544 (71%)

Texel Rate

The Radeon RX 580 should be much (about 229%) more effective at texture filtering than the Radeon HD 7850. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 125968 (229%)

Pixel Rate

The Radeon RX 580 should be much (about 46%) more effective at anti-aliasing than the Radeon HD 7850, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 12704 (46%)

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 is worked out by multiplying the total number of texture units 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.