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First Look: The Asus ROG Matrix GeForce RTX 4090 Brings Liquid Metal to the 4090

Well, not just liquid metal, but liquid, period: This watercooled graphics mega-card promises to top out RTX 4090 speeds by force of sheer cooling hardware.

 & John Burek Executive Editor and PC Labs Director

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TAIPEI—Asus’ periodic Matrix editions of its highest-end video cards are rare birds. The last one showed its PCB face during the GeForce RTX 20 series days, and the company has maintained something of a mystique and a limited-edition ethos around them. Of course, these being elite-grade cards with a limited clientele, they're more aspirational products than practical for most buyers. You admire the Ferrari, but you buy the Ford.

If you don’t consider yourself “most buyers,” though, then it's time to get a bit impractical…and get your wallet ready for some hurt. Asus teased, just before the official opening of Computex 2023, a Matrix edition of the Nvidia flagship GeForce RTX 4090 GPU, dubbed the ROG Matrix GeForce RTX 4090.

Asus did not announce pricing at the outset, and the assembled press had just a few minutes to ogle and shoot the card during a trip to Asus headquarters in Taipei. So let's get down to some of those pix…

Asus ROG Matrix GeForce RTX 4090

The Matrix is a liquid-cooled RTX 4090 card with the distinction of using liquid metal on the GPU die. As Asus reps explained, using liquid metal on a component that may be oriented and used in one of several different directions, depending on the installation, presents something of a challenge. (It’s safe to assume, in contrast, that a laptop employing liquid metal will predictably be used at full tilt only when it’s more or less parallel to a desk.) Liquid metal needs to be “dammed” in place to keep it from flowing out when heated (obviously a bad thing).

Asus ROG Matrix GeForce RTX 4090

As a result, Asus had to implement a special adhesive barrier, visible above and below in these PCB shots, around the GPU keep the metal contained when it's in a flow state. After all, a PC might have the card installed vertically, horizontally, or even up on end. The last is not uncommon in certain small-form-factor cases.

Asus ROG Matrix GeForce RTX 4090

This Matrix card is paired with a triple-fan radiator using three 120mm fans, and the product comes pre-assembled and pre-filled, in the same vein as an all-in-one liquid cooler you'd buy for a CPU. It's tethered via the liquid hoses to the 2.5-slot-wide video card.

Asus ROG Matrix GeForce RTX 4090

The pump mechanism is mounted along with the PCB inside the outer rim of the card, a sturdy metal surround that makes the card look like art suspended in the frame.

Asus ROG Matrix GeForce RTX 4090Asus ROG Matrix GeForce RTX 4090

The card, according to reps, should hit a power limit at 600 watts. It should also have the highest GPU boost clock available in an RTX 4090, a claim that Asus reps say they have verified with Nvidia. The liquid metal on the GPU, as well as a large copper cold plate, help contribute to getting this card out to the furthest performance reaches. 

Asus ROG Matrix GeForce RTX 4090

The fans on the radiator are daisy-chainable and magnetic. Asus Aura Sync will handle the lighting tweaks, though we did not get to see anything but the stock blue on the radiator fans in our brief time with the Matrix. Display-output connectors on the port plane comprise three DisplayPorts and two HDMIs, one more than typical.

Asus ROG Matrix GeForce RTX 4090

The card is 28cm long, though Asus advises 35mm of clearance to allow for a proper gentle arc/bend for the liquid cooler hoses. We’ll update this piece with pricing and availability as soon as we're able to pin some down. In the meantime...admire the view.

About Our Expert

John Burek

John Burek

Executive Editor and PC Labs Director

My Experience

I have been a technology journalist for almost 30 years and have covered just about every kind of computer gear—from the 386SX to 64-core processors—in my long tenure as an editor, a writer, and an advice columnist. For almost a quarter-century, I worked on the seminal, gigantic Computer Shopper magazine (and later, its digital counterpart), aka the phone book for PC buyers, and the nemesis of every postal delivery person. I was Computer Shopper's editor in chief for its final nine years, after which much of its digital content was folded into PCMag.com. I also served, briefly, as the editor in chief of the well-known hard-core tech site Tom's Hardware.

During that time, I've built and torn down enough desktop PCs to equip a city block's worth of internet cafes. Under race conditions, I've built PCs from bare-board to bootup in under 5 minutes. I never met a screwdriver I didn't like.

I was also a copy chief and a fact checker early in my career. (Editing and polishing technical content to make it palatable for consumer audiences is my forte.) I also worked as an editor of scholarly science books, and as an editor of "Dummies"-style computer guidebooks for Brady Books (now, BradyGames). I'm a lifetime New Yorker, a graduate of New York University's journalism program, and a member of Phi Beta Kappa.

The Technology I Use

I use a lot of computers on rotation in my daily work, but I rely on just a few to get things done. I split my work life mostly between a Microsoft Surface Laptop 3 (a 15-inch Ryzen model), paired with a Lenovo ThinkVision portable monitor, and a custom-built big-chassis Windows 10 desktop PC that has served me well for years now. (Specs: Liquid-cooled Intel Core i7-6950X Extreme Edition, 32GB of RAM, and a GeForce GTX 1080 card.) That's all in a giant chassis with six hard drives and SSDs packing its bays. (As I upgrade systems, I just keep moving the old warhorse drives over.) This behemoth is hooked up to a 32-inch LG monitor.

I also have a bunch of PCs around the house, all custom builds: another one attached to my main TV (for gaming and occasional forays into VR), a mini-PC on the bedroom TV (acting as a media server), and a Mini-ITX desktop in a corner of the living room...just because. I carry around an oversize OnePlus phone, but when I do long-haul travel, a vintage iPod Touch comes along, too, for old times' sake.

I wasn't always a PC guy. I cut my teeth on a cassette-drive-equipped Commodore VIC-20 in the 1980s. But I got serious with Apple desktops in the early 1990s, starting with a Macintosh SE, then a Macintosh LC, and finally one of the short-lived Umax "clone" Macs, before building my first PC and never looking back.

With all my typing and editing work over the years, I've become a huge proponent of thumb trackballs, which minimize wrist action (and my wrist pain). I have a secret cache of the long-discontinued Microsoft Trackball Optical Mouse (my personal favorite), held in an undisclosed location.

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