Radeon HD 6790 vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which makes use of a 14 nm design. AMD has clocked the core speed at 1257 MHz. The GDDR5 memory works at a frequency of 2000 MHz on this specific model. It features 2304 SPUs as well as 144 Texture Address Units and 32 Rasterization Operator 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 6790		2150 points
	Difference: 11480 (534%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
Radeon RX 580		185 Watts
	Difference: 35 Watts (23%)

Memory Bandwidth

In theory, the Radeon RX 580 should be much faster than the Radeon HD 6790 in general. (explain)

Radeon RX 580		262144 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 127744 (95%)

Texel Rate

The Radeon RX 580 will be quite a bit (more or less 439%) better at anisotropic filtering than the Radeon HD 6790. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 147408 (439%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 580 is superior to the Radeon HD 6790, by a large margin. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 26784 (199%)

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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.