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总结
英伟达在CES 2026期间披露DLSS 4.5更新，称其超分辨率引入第二代Transformer模型，并对抗锯齿效果进行升级；同时推出“6倍动态多帧生成”模式，可在运行中动态生成更多插帧以抬升帧率。配套的GeForce 591.74 WHQL驱动已加入对DLSS 4.5的支持。部分媒体与测试信息指出，新版本在RTX 50系列上可能带来约2%—3%的性能开销，而RTX 20/30等较老架构的性能下降或可能超过20%，意味着画质与帧率提升将伴随更高算力消耗与兼容性差异。
正文
Nvidia reveals DLSS 4.5 with anti-aliasing upgrades and a dynamic, if slightly mad, 6x frame gen mode Rock Paper Shotgun NVIDIA DLSS 4.5 Delivers Major Upgrade With 2nd Gen Transformer Model For Super Resolution & 6X Dynamic Multi Frame Generation NVIDIA Nvidia introduces DLSS 4.5 and Multi Frame Generation 6X at CES 2026 - updated models can generate higher-quality upscaled frames and more of them, dynamically Tom's Hardware NVIDIA Releases GeForce 591.74 WHQL Drivers with DLSS 4.5 Support TechPowerUp NVIDIA DLSS 4.5 costs 2-3% performance on RTX 50, RTX 20/30 may be hit with 20%+ drops VideoCardz.com
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