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RTX 4090 loses 20% performance when used as an external graphics card

Now connecting an external video card to certain laptop models with support for this feature takes only a few seconds and requires the user to have exactly one fairly thin wire compatible with Thunderbolt 3/4 or USB 4. A full-fledged desktop video card is installed in a separate unit with its own power supply for it, and then communicates with the laptop through the mentioned wire. Conveniently? Definitely, but what about performance?

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Most “assemblies” with external graphics cards include mid-range graphics, which allows them to actually work at the limit of their capabilities, but what if you use NVIDIA GeForce RTX 4090 for these purposes? This will result in a performance loss of 8 to 28 percent, according to tests in 3DMark by¬†OmegaMalkior from the eGPU portal.

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