主要区别

• The XFX has 16GB of VRAM on a 256-bit bus with 644.6 GB/s of bandwidth, while the Gigabyte is stuck with 6GB on a 96-bit bus and only 192 GB/s. That's a 3.4x bandwidth gap that shows up immediately in modern games.
• Raw compute is night and day: the XFX pushes 36.13 TFLOPS of FP32 and 72.25 TFLOPS of FP16, versus the Gigabyte's 4.81 TFLOPS for both. The XFX also has 112 tensor cores and 56 RT cores compared to 64 and 16.
• The Gigabyte's only spec win is base clock (1500 MHz vs 1440 MHz), but the XFX boosts to 2700 MHz while the Gigabyte tops out at 1477 MHz. That base clock advantage is meaningless in practice.
• Real-world scores tell the story: the XFX scores 83 for 1080p gaming, 82 for 1440p, and 80 for 4K, while the Gigabyte manages 47, 38, and 27. The Gigabyte is a 1080p card at best; the XFX handles everything.
• Customer sentiment is strong for both, but the XFX wins on cooling and build quality with an 88/100 score. The Gigabyte gets 82/100 and users love that it needs no external power, but the XFX's size is a real concern for smaller cases.