Radeon HD 7790 vs Radeon RX 480

Intro

Compare that to the Radeon RX 480, which has GPU core speed of 1120 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 7790		4330 points
	Difference: 9019 (208%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon RX 480		150 Watts
	Difference: 65 Watts (76%)

Memory Bandwidth

As far as performance goes, the Radeon RX 480 should theoretically be quite a bit better than the Radeon HD 7790 in general. (explain)

Radeon RX 480		262144 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 166144 (173%)

Texel Rate

The Radeon RX 480 will be quite a bit (about 188%) better at anisotropic filtering than the Radeon HD 7790. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 105280 (188%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 480 is the winner, by a large margin. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 19840 (124%)

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 data (measured in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.