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Radeon HD 7850 vs Radeon RX 6500 XT

Intro

The Radeon HD 7850 comes with a clock speed of 860 MHz and a GDDR5 memory frequency of 1200 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Compare all that to the Radeon RX 6500 XT, which has a clock speed of 2200 MHz and a GDDR6 memory frequency of 2250 MHz. It also uses a 64-bit memory bus, and makes use of a 6 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT 107 Watts
Radeon HD 7850 130 Watts
Difference: 23 Watts (21%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7850 should perform just a bit faster than the Radeon RX 6500 XT in general. (explain)

Radeon HD 7850 153600 MB/sec
Radeon RX 6500 XT 147456 MB/sec
Difference: 6144 (4%)

Texel Rate

The Radeon RX 6500 XT should be quite a bit (more or less 156%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

Radeon RX 6500 XT 140800 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 85760 (156%)

Pixel Rate

The Radeon RX 6500 XT is quite a bit (more or less 156%) better at FSAA than the Radeon HD 7850, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 6500 XT 70400 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 42880 (156%)

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 7850

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 7850 Radeon RX 6500 XT
Manufacturer AMD AMD
Year March 2012 January 2022
Code Name Pitcairn Pro Navi 24 XT
Memory 2048 MB 4096 MB
Core Speed 860 MHz 2200 MHz
Memory Speed 4800 MHz 4500 GB/s
Power (Max TDP) 130 watts 107 watts
Bandwidth 153600 MB/sec 147456 MB/sec
Texel Rate 55040 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 27520 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 1024 1024
Texture Mapping Units 64 64
Render Output Units 32 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit 64-bit
Fab Process 28 nm 6 nm
Transistors 2800 million 5400 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.1 DirectX 12
OpenGL Version OpenGL 4.2 OpenGL 4.6

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 7850

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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