NVIDIA RTX 4090 review: Unholy power

How do you go about reviewing something like NVIDIA’s RTX 4090? Just looking at its specs alone, it’s obviously the fastest consumer GPU we’ve ever seen. So sure, I can tell you that I can play just about anything in 4K with ray tracing and every graphical nicety turned on. Hell, it can even scale up to 8K if you’re a masochist. For a $1,599 video card, it damn well better. But the real question is, who is this thing actually for?

Benching the RTX 4090 against NVIDIA and AMD’s older hardware is practically pointless. Of course it’s far faster. Of course it’ll make you jealous. If you’ve got the cash and you’re itching to upgrade, go with God (or NVIDIA’s leather-clad CEO Jensen Huang, as the company’s fans see him). But for anyone else who doesn’t need bleeding edge hardware, it exists purely as an object of lust. Sure, you could wait for the upcoming RTX 4080 cards, or whatever AMD has in the works, but it’s not a 4090. Just like the last generation of GPUs, NVIDIA is throwing down the gauntlet with a power-hungry card for the most hardcore gamers and creators.

If your mind isn’t made up, I assume you’re here just to see how much of a beast the 4090 is. And let me tell you, it’s a stunning thing to behold. Weighing in at 4.8 pounds, and approaching the size of the PlayStation 5, the RTX 4090 is a triple-slot GPU that will dominate whatever case it’s in. Seriously, if you’re thinking of getting it, be sure to measure your PC to ensure you can fit a nearly foot-long card that’s close to 5 inches thick.

Be prepared to upgrade your power supply too: The 4090 has a high 450W TDP (the same thermal design profile as the 3090 Ti) and it requires an 850W PSU. (Some third-party companies are pushing that demand to 1200W PSUs!) While it can be powered by a single PCIe 5.0 cable, there still aren’t many of those PSUs on the market, so most people will likely end up using four 8-pin adapters. I cursed Jensen’s name when I realized I needed to string another PSU line, after tidying up all of my cables.

Beyond its obscene power demands, though, NVIDIA hasn’t changed much about the 4090 Founder Edition’s design from its previous model: It’s still a high-end, all-metal card with a massive vapor chamber, heatsink array and two fans on opposite sides. NVIDIA claims they can push 20 percent more air than the 3090 Ti – in my testing, that meant the 4090 stayed at a relatively cool 70C under load.

What’s truly special about the RTX 4090, though, is everything under the hood. It features the company’s new “Ada Lovelace” architecture (named after the world’s first computer programmer, though I wonder if NVIDIA pays any royalties to turn her name into marketing). It has 16,384 CUDA cores (almost 6,000 more than the 3090 Ti), a base clock speed of 2.23GHz (boost to 2.52GHz), and 24GB of GDDR6X RAM. With figures like these, the upcoming RTX 4080 cards (which start with 7,680 CUDA cores) seem puny in comparison.