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Radeon HD 6990 vs Radeon RX 590

Intro

The Radeon HD 6990 has a clock speed of 830 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is made up of 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon RX 590, which features GPU clock speed of 1469 MHz, and 8192 MB of GDDR5 memory running at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590 175 Watts
Radeon HD 6990 375 Watts
Difference: 200 Watts (114%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6990 should theoretically be a lot superior to the Radeon RX 590 overall. (explain)

Radeon HD 6990 320000 MB/sec
Radeon RX 590 262144 MB/sec
Difference: 57856 (22%)

Texel Rate

The Radeon RX 590 is a lot (approximately 33%) faster with regards to AF than the Radeon HD 6990. (explain)

Radeon RX 590 211536 Mtexels/sec
Radeon HD 6990 159360 Mtexels/sec
Difference: 52176 (33%)

Pixel Rate

The Radeon HD 6990 will be a small bit (approximately 13%) faster with regards to anti-aliasing than the Radeon RX 590, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6990 53120 Mpixels/sec
Radeon RX 590 47008 Mpixels/sec
Difference: 6112 (13%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 6990

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

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Model Radeon HD 6990 Radeon RX 590
Manufacturer AMD AMD
Year March 2011 November 2018
Code Name Antilles Polaris 30
Memory 2048 MB (x2) 8192 MB
Core Speed 830 MHz (x2) 1469 MHz
Memory Speed 5000 MHz (x2) 8000 MHz
Power (Max TDP) 375 watts 175 watts
Bandwidth 320000 MB/sec 262144 MB/sec
Texel Rate 159360 Mtexels/sec 211536 Mtexels/sec
Pixel Rate 53120 Mpixels/sec 47008 Mpixels/sec
Unified Shaders 1536 (x2) 2304
Texture Mapping Units 96 (x2) 144
Render Output Units 32 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 40 nm 12 nm
Transistors 2640 million 5700 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, 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 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 Raster Operations Pipelines by the the core 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 6990

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.

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