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討論區規矩與守則
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Are you looking to do 1440p or 4K? I think that's an important question here. A 65" TV implies 4K to me though, but maybe the quality loss at 1440p won't be as noticeable at a distance, or will you be viewing from close?
The RTX 5080 is about 10% to 15% faster than the RTX 5070 Ti (this gap tends to shrink a bit if both are overclocked), which itself is slightly faster than the 9070 XT. nVidia usually has better upscaling quality (though FSR4 that came with the Radeon 9000 series made it closer) and better ray tracing performance.
If this is for 4K and ray tracing is something that matters, I think it "forces" you to look at the RTX 5080 at a minimum. The RTX 5090 (or 4090) would be better, but they would push the price up a lot (plus increase the melting connector risk). If you're okay with 1440p, either the 9070 XT or RTX 5070 Ti are probably the better options. This generation's x80 is more of a mid-range GPU if you look at relative performance within the lineup, despite being the third fastest overall. Super refreshes are expected and may bump up the VRAM. 16 GB is fine for now, but I don't know how true that will be at 4 K years from now. But those are probably far enough away that I wouldn't suggest waiting if you want the PC right now.
RTX 5080 is too expensive and new version with more VRAM is coming out anyway.
Combine with 9800X3D and you are in business.