Compare any two graphics cards:

Radeon HD 7790 vs Radeon RX 590

Intro

The Radeon HD 7790 has core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 memory. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Compare those specs to the Radeon RX 590, which has a core clock frequency of 1469 MHz and a GDDR5 memory speed of 2000 MHz. It also uses a 256-bit bus, and makes use of a 12 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon RX 590		175 Watts
	Difference: 90 Watts (106%)

Memory Bandwidth

In theory, the Radeon RX 590 should be 173% quicker than the Radeon HD 7790 overall, due to its greater data rate. (explain)

Radeon RX 590		262144 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 166144 (173%)

Texel Rate

The Radeon RX 590 will be much (approximately 278%) faster with regards to texture filtering than the Radeon HD 7790. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 155536 (278%)

Pixel Rate

The Radeon RX 590 will be a lot (approximately 194%) more effective at full screen anti-aliasing than the Radeon HD 7790, and should be able to handle higher resolutions more effectively. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 31008 (194%)

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

Display Prices

Hide Prices

Radeon HD 7790

Amazon.com

Check prices at:

Radeon RX 590

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

Hide Specifications

Model	Radeon HD 7790	Radeon RX 590
Manufacturer	AMD	AMD
Year	March 2013	November 2018
Code Name	Bonaire XT	Polaris 30
Memory	1024 MB	8192 MB
Core Speed	1000 MHz	1469 MHz
Memory Speed	6000 MHz	8000 MHz
Power (Max TDP)	85 watts	175 watts
Bandwidth	96000 MB/sec	262144 MB/sec
Texel Rate	56000 Mtexels/sec	211536 Mtexels/sec
Pixel Rate	16000 Mpixels/sec	47008 Mpixels/sec
Unified Shaders	896	2304
Texture Mapping Units	56	144
Render Output Units	16	32
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	256-bit
Fab Process	28 nm	12 nm
Transistors	2080 million	5700 million
Bus	PCIe 3.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 11.1	DirectX 12.0
OpenGL Version	OpenGL 4.3	OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices