Radeon HD 6790 vs Radeon RX 480

Intro

Compare those specs to the Radeon RX 480, which uses a 14 nm design. AMD has clocked the core frequency at 1120 MHz. The GDDR5 RAM is set to run at a frequency of 2000 MHz on this specific card. 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 480		13349 points
Radeon HD 6790		2150 points
	Difference: 11199 (521%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the Radeon RX 480 should be quite a bit faster than the Radeon HD 6790 overall. (explain)

Radeon RX 480		262144 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 127744 (95%)

Texel Rate

The Radeon RX 480 should be quite a bit (about 380%) better at AF than the Radeon HD 6790. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 127680 (380%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 480 is superior to the Radeon HD 6790, and very much so. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 22400 (167%)

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 (counted in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.