Pairing a CPU and GPU isn’t about brands matching; it’s about balance. Any modern CPU will fit any modern GPU (thanks to the universal PCIe x16 slot), but a weak processor can’t feed frames fast enough, leaving a high-end graphics card idle and your performance capped.
Check the resolution you game at: 1080p demands more CPU grunt, 4K shifts load to the GPU. A Ryzen 5 5600 + RTX 4070 is sweet for 1440p, while an i3-12100F will bottleneck an RTX 4090 at 1080p.
Use a bottleneck calculator, aim for <10 % imbalance, and remember: motherboard BIOS updates, a quality PSU, and dual-channel RAM matter just as much as the specs on the box.
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CPU & GPU Compatibility: The Short Version
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