This gaming PC feels like an Xbox 360 with an RTX 5090 inside - here's why
But when the top-of-the-line MG-1 Ultimate ($5,269) that Maingear built for us finally showed up at my door, I was impressed. Before I even had a chance to plug it in and see how well it performs, I was charmed by the (fairly) portable mid-size case and the eye-catching custom panel on the front.
One of the big selling points of the MG-1 are these swappable front panels, and I love how they remind me of the old Xbox 360 faceplate days. But if that was the most exciting aspect of this gaming PC I'd quickly lose interest.
But after a month of testing and using the Maingear MG-1 Ultimate I'm pleased to report this is one of the best gaming PCs I've reviewed this year. Like most great gaming PCs it's pretty expensive, but if you can afford it you're getting a potent powerhouse that's easy to customize, easy to move and so quiet you'd barely know it was running, even after gaming for hours.
Maingear MG-1 (starting)
Maingear MG-1 (as reviewed)
Price
$1,529
$5,107
CPU
AMD Ryzen 5 9600X
AMD Ryzen 9 9950X3D
GPU
Nvidia GeForce RTX 5050
Nvidia GeForce RTX 5090
RAM
16GB
32GB
Storage
1TB SSD
2TB SSD
Ports (front)
4x USB 3.0 Type-A, 1x USB 3.1 Type-C, headphone/mic jack
4x USB 3.0 Type-A, 1x USB 3.1 Type-C, headphone/mic jack
Ports (rear)
4x USB 2.0 Type-A, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, 1x USB-C 10Gbps
4x USB 2.0 Type-A, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, 1x USB-C 10Gbps
Size
19 x 16.8 x 8.1 inches
19 x 16.8 x 8.1 inches
Weight
~32 pounds
~32 pounds
The custom MG-1 review unit that Maingear sent us is pretty expensive, but in return you get a compact, quiet gaming PC that can run many of the latest games at 4K with all the graphical settings cranked to max.
Our testing reveals that even when you do that you can often expect to get around 60 frames per second at 4K, but it's not consistent. Some of the most demanding games, like Black Myth Wukong and Cyberpunk 2077, will push this system so hard at max settings that even the RTX 5090 and AMD Ryzen 9 CPU will struggle to keep a smooth 60 frames per second at 4K.
To show you what I mean I've charted the Maingear MG-1's performance in key games below and put it up against two other pricey RTX 5090 gaming PCs we've reviewed recently, the Alienware Area 51 ($5,699 as tested) and the Corsair Vengeance i8300 ($7,399 as tested).
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Maingear MG-1
Alienware Area 51
Corsair Vengeance i8300
Assassin's Creed Shadows (Ultra High)
65
76
64
Black Myth Wukong (Cinematic)
55
59
60
Cyberpunk 2077
53.6
56.7
57.5
Red Dead Redemption 2 (Ultra)
67
84.6
64.4
As you can see, the more expensive gaming PCs outperformed our Maingear MG-1 review unit by a small degree in most games. But in a few cases (namely Assassin's Creed Shadows and Red Dead Redemption 2) the Maingear actually beat out Corsair's Vengeance i8300 by a smidge.
That's a bit amazing given that the Vengeance costs over $2,000 more and is also larger and heavier, so it's more of a pain to fit into your entertainment setup. So while the Alienware Area 51 desktop comes out smelling like roses, our testing proves the Maingear MG-1 is smaller and nearly as good as the Corsair despite being far cheaper.
Maingear MG-1
Alienware Area 51
Corsair Vengeance i8300
Geekbench 6 single-core
3401
3148
3303
Geekbench 6 multi-core
23071
21786
23328
SSD speed test (MBps)
2107.9
1898.2
2480.5
Video editing test (mm:ss)
1:45
1:53
1:47
A similar story played out when we put the MG-1 Ultimate through our battery of general performance tests, but this time it performed a bit better compared to the more expensive Area 51 and Vengeance i8300.
As you can see from the chart of results above, our MG-1 review unit consistently outperformed either the Alienware, the Corsair or both in our Geekbench 6 CPU tests and our SSD speed test. And in our video editing test, which times how long it takes the PC to transcode a 4K video down to 1080p using Handbrake, Maingear's MG-1 Ultimate actually outperformed both the Alienware and Corsair RTX 5090 PCs.
Factor in the fact that our MG-1 review unit is cheaper and smaller than either competitor, and you start to see why I love this mid-size gaming rig.
Another thing I love about the MG-1 Ultimate is how quiet it is, even after hours of playing games like Cyberpunk 2077 and Red Dead Redemption 2 at 4K with all settings cranked to max.
While I do hear the fans spin up after extended (1-2+ hours) gaming sessions or when the room gets quite toasty, I almost never notice them. And when I finally did, I had to fire up our Corsair Vengeance i8300 review unit to remind me what a really beastly full-sized gaming tower PC can sound like when things get hot and heavy.
The MG-1 Ultimate doesn't get terribly toasty under load, either. When I was testing the Vengeance i8300, for example, I noticed that after a few hours of PC gaming on the couch my entire living room would feel warm. By contrast, Maingear's mid-sized rig doesn't feel noticeably warm, even after hours of gaming, unless I put my hand directly against the exhaust.
I like a PC case that's neatly organized and easy to open, so I'm very happy with the MG-1 case that houses this beastly machine.
Not only does the PC run quiet and have lots of room to work inside the case, the tempered glass side panel is easy to remove once you remove the screws fastening it in place. Popping it back on is just as easy, which I really appreciate.
Maingear touts a few additional selling points for this case, including the fact that the MG-1 was designed in partnership with company co-owner, professional game streamer and former pro eSports player Michael "Shroud" Grzesiek.
That's all fine and good, but I'm more excited about the swappable magnetic front panel.
Hey, I get maybe not everyone will love the silly appeal of being able to order new swappable front panels from Maingear for $99 a pop (or $129 if you want a custom one), but I love it.
There are loads of fun designs and patterns to choose from, and the whole thing reminds me of nothing so much as the swappable faceplates we used to use on the old Xbox 360.
While it's a bit goofy that Maingear custom-printed us one with the TG logo on it for the purposes of this review, I have to admit I like seeing a pop of color on the PC when I sit down at my desk every morning.
And since the Maingear logo in the top center of the panel glows in concert with the PC's RGB settings, whatever front panel you add will feature a fun bit of RBG flair winking out from the middle.
As much as I like the 2025 Maingear MG-1 Ultimate, there is one big downside to buying one that I should make clear before wrapping up.
After a month with this machine I can't find anything to complain about besides the high price, and that's par for the course when you're buying high-end gaming PCs."
Look, I would have a hard time affording the MG-1 Ultimate that Maingear sent us for review on my journalist's salary. I could do it, but I'd probably spend half a year or more scrimping and saving to minimize the strain on my credit. Most people will likely face a similar quandary when considering whether to buy a boutique PC like the MG-1.
Now admittedly, you can get a less powerful version for thousands of dollars less—upgrading from the base RTX 5050 to the top-of-the-line GeForce RTX 5090 GPU adds over $2,500 to the price alone, for example.
And again, this high-end MG-1 Ultimate performs nearly as well or better in our testing as 2025 gaming PCs that cost hundreds or thousands more. So while it is damn expensive, if you're aiming for RTX 5090 levels of performance this might actually be a fairly canny way of maximizing what you get for your money.
If it's not clear already, I'm quite fond of Maingear's 2025 MG-1 Ultimate.
The machine Maingear sent us for review packs a powerful AMD + Nvidia CPU/GPU combo that punches above its weight in terms of performance, and I love how quiet it remains even after hours of use.
But even when it's switched off, I like how nice the MG-1 looks on a desk (especially with a cool front panel design) and I appreciate how easy it is to move from room to room. And when it's time to upgrade or swap something out, I love that you can quickly unscrew some fasteners and pop the side panel off for easy access.
After a month with this machine I can't find anything to complain about besides the high price, and that's par for the course when you're buying high-end gaming PCs. So if that's what you're after, I highly recommend Maingear's MG-1 as one of the best I've tested in 2025.
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