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Radeon HD 6990 vs Radeon RX 470 4GB

Intro

The Radeon HD 6990 has a core clock frequency of 830 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1536 SPUs, 96 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 470 4GB, which comes with a GPU core clock speed of 926 MHz, and 4096 MB of GDDR5 memory set to run at 1650 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

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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.

Ethereum Mining Hash Rate

Radeon RX 470 4GB 27 Mh/s
Radeon HD 6990 24 Mh/s
Difference: 3 (13%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB 120 Watts
Radeon HD 6990 375 Watts
Difference: 255 Watts (213%)

Memory Bandwidth

Theoretically, the Radeon HD 6990 should be much faster than the Radeon RX 470 4GB in general. (explain)

Radeon HD 6990 320000 MB/sec
Radeon RX 470 4GB 211200 MB/sec
Difference: 108800 (52%)

Texel Rate

The Radeon HD 6990 should be a lot (approximately 34%) better at texture filtering than the Radeon RX 470 4GB. (explain)

Radeon HD 6990 159360 Mtexels/sec
Radeon RX 470 4GB 118528 Mtexels/sec
Difference: 40832 (34%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6990 is the winner, by a large margin. (explain)

Radeon HD 6990 53120 Mpixels/sec
Radeon RX 470 4GB 29632 Mpixels/sec
Difference: 23488 (79%)

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

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Radeon RX 470 4GB

Amazon.com

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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 470 4GB
Manufacturer AMD AMD
Year March 2011 August 2016
Code Name Antilles Polaris 10
Memory 2048 MB (x2) 4096 MB
Core Speed 830 MHz (x2) 926 MHz
Memory Speed 5000 MHz (x2) 6600 MHz
Power (Max TDP) 375 watts 120 watts
Bandwidth 320000 MB/sec 211200 MB/sec
Texel Rate 159360 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 53120 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 1536 (x2) 2048
Texture Mapping Units 96 (x2) 128
Render Output Units 32 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 40 nm 14 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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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

Display Prices

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Radeon HD 6990

Amazon.com

Check prices at:

Radeon RX 470 4GB

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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