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Radeon HD 4850 X2 512MB vs Radeon RX 6600

Intro

The Radeon HD 4850 X2 512MB makes use of a 55 nm design. AMD has clocked the core speed at 625 MHz. The GDDR3 RAM is set to run at a speed of 993 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Compare all that to the Radeon RX 6600, which comes with a GPU core clock speed of 1626 MHz, and 8192 MB of GDDR6 RAM set to run at 1750 MHz through a 128-bit bus. It also features 1792 SPUs, 112 Texture Address Units, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 132 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 118 Watts (89%)

Memory Bandwidth

The Radeon RX 6600, in theory, should perform much faster than the Radeon HD 4850 X2 512MB in general. (explain)

Radeon RX 6600 229376 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 102272 (80%)

Texel Rate

The Radeon RX 6600 is much (more or less 264%) more effective at anisotropic filtering than the Radeon HD 4850 X2 512MB. (explain)

Radeon RX 6600 182112 Mtexels/sec
Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Difference: 132112 (264%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6600 is a better choice, by a large margin. (explain)

Radeon RX 6600 104064 Mpixels/sec
Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Difference: 84064 (420%)

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 4850 X2 512MB

Amazon.com

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Radeon RX 6600

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 4850 X2 512MB Radeon RX 6600
Manufacturer AMD AMD
Year Nov 7, 2008 October 2021
Code Name R700 Navi 23
Memory 512 MB (x2) 8192 MB
Core Speed 625 MHz (x2) 1626 MHz
Memory Speed 1986 MHz (x2) 3500 GB/s
Power (Max TDP) 250 watts 132 watts
Bandwidth 127104 MB/sec 229376 MB/sec
Texel Rate 50000 Mtexels/sec 182112 Mtexels/sec
Pixel Rate 20000 Mpixels/sec 104064 Mpixels/sec
Unified Shaders 800(160x5) (x2) 1792
Texture Mapping Units 40 (x2) 112
Render Output Units 16 (x2) 64
Bus Type GDDR3 GDDR6
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 7 nm
Transistors 956 million 11060 million
Bus PCIe 2.0 x16 (PCIe bridge) PCIe 4.0 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write 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 the core clock speed. 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 bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 4850 X2 512MB

Amazon.com

Check prices at:

Radeon RX 6600

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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