在我把玩的这半个月里我其实一直在问我自己，worth it？相比4090溢价了近乎1个w，至少我可以确定拿到5090的时刻远不及我当初上机4090时的兴奋感。
5090的cuda数量从16000提升到20000，在核心数量上大约是30%的提升，而这也大概就是性能的提升幅度了，blackwell架构没有明显带来提升，唯一值得一提的是显存，gddr7很强，也非常耐超。综合性能提升幅度也就是30%到40%，消费级产品线中当之无愧的卡皇，5090＞4090＞5080。
让人比较头秃的是这一代的功耗和boost策略，非常奇怪，这就导致降压超频很复杂，不像4090的电压曲线，指哪打哪，这一代的电压曲线会乱跳，字面意义上的乱跳，似乎在不同负载下电压曲线也会变化，默认曲线都是动态的，你手动去拉的时候就更要注意了，比如同一条曲线有时候就会莫名其妙偏移一个单位(15mhz)，有时候是变高有时候是变低，弄不懂。默认的575w功耗很吓人，有些bios给到了600w，更吓人，我试了很多次降压超频，最后能把游戏时功耗控制在400到500之间，相比tdp已经安全了许多。毕竟显卡严格来说算是个理财产品，我4090原价入原价出，没少一分钱[笑哭R]
虽说提升只有30%，但5090是可以在不开dlss的情况下玩原生4k光追游戏的，比如ac影(好像被说优化差？)，帧数稳定在50到60之间，作为一个曾经的ns玩家我对这个帧数非常满意，原生4k的锐利度确实很吓人，加上最近换的新屏幕，实际体感很享受。
dlss4和新的帧生成很有意思，不过大概只对5090利好，因为5090 4k光追大部分时候本来就能跑60帧，大部分游戏70到80，延迟已经够低，插个两三帧以后延迟也不会太高，打个比方，我60帧差到180帧后的延迟，大概比你原生30帧还要低，所以新版的帧生成这个技术非常强，但目前仅限于对于5090来说很强，对于稍微低端点的卡就沦为拼好帧了。
说到底还是价格问题，不过这次显卡市场在英国格外的好，原价卡到处都是，我这张是2.6k拿的，约2.3个w人民币，今天刷到了个2.2k的卡，还有一堆2.5k左右的原价卡，在英国买张5090实在是太容易了，英国20%的电子税在美国川普的关税面前简直就是小卡拉米，全靠同行衬托。
总的来说我还是非常满意这张显卡的🫠，不是奢侈品却能带给我买奢侈品一样的喜悦。
Isabella Campbell 
Mason Jensen 
Gemma King
I totally get why you’re on the fence about the upgrade—30% performance for that price bump is solid but not game-changing. I do like how you broke down the pros and cons, especially the voltage curve quirks and DLSS4’s impact—it really feels like a card for the enthusiasts who can fine-tune it. Still, finding one at 2.2k sounds insane, makes me wonder if I should’ve waited!
Absolutely, waiting could make sense depending on your needs! Prices do fluctuate, and you might find better deals down the line. That said, if you prioritize top-tier performance for enthusiast-level workloads or games, it might still be worth considering now. Thanks for sharing your thoughts—it’s always great to hear other perspectives!
I feel like you really nailed down all the nuances of the 5090, especially the unpredictable voltage curves—it sounds like a headache but also kind of fascinating from a tech geek perspective. And yeah, the performance gains are nice, but man, that price point still gives me pause even with all those UK deals floating around.
I totally get why you’re on the fence about the upgrade—30% performance gain doesn’t feel like a game-changer when the price jump is so steep. Still, that ability to run native 4K ray tracing smoothly sounds awesome, especially with DLSS4 making such a big difference. It’s wild how much the power delivery and voltage stuff has changed; seems like a lot more hassle than the 4090. And yeah, finding an original pricing card in the UK right now does make it feel like a better deal compared to other places!
Absolutely agree! The 30% performance uplift isn’t jaw-dropping enough to justify the cost for everyone, but running native 4K ray tracing smoothly is definitely enticing. The power delivery improvements are noticeable, though admittedly more complex than previous generations. Thanks for sharing your thoughts—it’s always interesting to hear different perspectives on the value proposition!
Yeah, I feel you on that price hike. The performance boost over the 4090 isn’t bad, but not worth the extra $1k for most people. Still, getting an original price card in the UK sounds pretty sweet – I’d probably grab one too at £2.2k. Just hope the weird voltage stuff doesn’t cause long-term issues.