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Radeon HD 6790 vs Radeon RX 6500 XT

Intro

The Radeon HD 6790 features a GPU core clock speed of 840 MHz, and the 1024 MB of GDDR5 RAM runs at 1050 MHz through a 256-bit bus. It also features 800 Stream Processors, 40 TAUs, and 16 ROPs.

Compare those specifications to the Radeon RX 6500 XT, which comes with core speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 memory. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT 107 Watts
Radeon HD 6790 150 Watts
Difference: 43 Watts (40%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6500 XT should theoretically be a bit better than the Radeon HD 6790 in general. (explain)

Radeon RX 6500 XT 147456 MB/sec
Radeon HD 6790 134400 MB/sec
Difference: 13056 (10%)

Texel Rate

The Radeon RX 6500 XT will be a lot (more or less 319%) faster with regards to AF than the Radeon HD 6790. (explain)

Radeon RX 6500 XT 140800 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 107200 (319%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6500 XT is a better choice, and very much so. (explain)

Radeon RX 6500 XT 70400 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 56960 (424%)

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

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Radeon HD 6790

Amazon.com

Check prices at:

Radeon RX 6500 XT

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 6790 Radeon RX 6500 XT
Manufacturer AMD AMD
Year April 2011 January 2022
Code Name Barts LE Navi 24 XT
Memory 1024 MB 4096 MB
Core Speed 840 MHz 2200 MHz
Memory Speed 4200 MHz 4500 GB/s
Power (Max TDP) 150 watts 107 watts
Bandwidth 134400 MB/sec 147456 MB/sec
Texel Rate 33600 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 13440 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 800 1024
Texture Mapping Units 40 64
Render Output Units 16 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit 64-bit
Fab Process 40 nm 6 nm
Transistors 1700 million 5400 million
Bus PCIe 2.1 x16 PCIe 4.0 x16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels the video card could possibly record to the 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 the core 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6790

Amazon.com

Check prices at:

Radeon RX 6500 XT

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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