Alienware Space-51 Evaluate: One Tremendous-Clear Beast Of A Gaming PC

	Alienware Space-51 (2025) – Begins at $3,399, $5,699 as examined  Alienware utterly revamped its traditional gaming PC with the newest high-powered {hardware} and an efficient cooling resolution that takes a novel method to airflow.
	Tremendous quick {hardware} with nice efficiency Wonderful cooling with quiet acoustics Spacious enclosure with fashionable expandability Enticing design with RGB lighting Novel method to fan association that basically works	Excessive beginning value, even larger after upgrades Upgradeability requires add-on wiring harness RGB LEDs are usually not controllable outdoors Alienware software program

Within the late 90s and early 2000s, Alienware made its identify with the Space-51. That was its flagship gaming PC rife with top-of-the-line parts, glorious efficiency, and a singular look that made it stand out from the competitors. In 2025, Alienware continues to be doing the identical factor with the Space-51. It stays a prime flight gaming PC with the most effective parts, glorious efficiency, and a singular look, however it’s additionally received fairly a bit extra. We’ll put it by way of its paces, see the way it performs, and determine whether or not that is the pre-built gaming PC for you. 

Whereas this overview is stuffed with our typical benchmarks and evaluation, we have additionally put collectively a video overview under that can take you thru the Space-51 visually, discover extra gaming efficiency than what’s coated right here, and spotlight a lot of its options in movement. You may watch the video proper right here:

Alienware Space-51 (2025) Specs

Now it is time to dive into the Alienware Space-51. Our overview unit has an Intel Core Extremely 9 285K processor. Tha CPU provides 24 complete cores, 8 P-Cores and 16 E-Cores, and a prime Turbo enhance of 5.7 GHz and 36 MB of Intel’s Sensible Cache. It might take as much as 250 Watts to hit these tops speeds, so the 360-millimeter closed-loop cooler contained in the Space-51 may have its work minimize out for it.

The graphics card within the Space-51 is an NVIDIA GeForce RTX 5090 with 32 GB of GDDR7 reminiscence and 21,760 CUDA cores. As you’ll be able to see in our GeForce RTX 5090 overview, it is the quickest GPU on the planet relating to gaming. Our system additionally has 64GB of dual-channel DDR5 with an XMP profile that has it working at 6,400 MT/s with latencies clocking in at 46CL. That is truly sort of excessive in comparison with many retail DDR5-6400 kits, which ceaselessly hit as little as 30 cycles of latency, so we’ll simply should see what sort of influence it has on efficiency.

There’s additionally a 2 TB NVMe PCIe 4.0 drive, however Alienware needs you to know that Gen5 drives are additionally out there. Powering all of it is a 1500 W Platinum-rated ATX 12VO energy provide. For wi-fi networking, there is a Killer BE1750x that delivers Wi-Fi 7 and Bluetooth 5.4, and there is additionally a Killer 2.5 Gb Ethernet if you happen to favor wired networking. 

Alienware Space-51 Case and Design

Whereas current Alienware Space-51 desktops have been extra mid-tower sized, the case of the brand new Space-51 is fairly massive. At 22 x 9.5 x 24 inches, it is almost as large as a bigger ATX case just like the Fractal Design Outline 7 XL, however there is a fairly good purpose for it. The entrance followers are 180mm, and there is a pair of them. There’s additionally the 360mm closed-loop cooler on the prime of the system, which provides three extra 120mm followers blowing down. And there are a few followers within the backside of the system blowing air up too.

Alienware is admittedly pleased with the positive-pressure cooling system within the Space-51. All the followers are consumption followers, and air naturally exhausts out the again. The corporate says the system can run as much as 45% quieter throughout graphics-intensive duties (so we’re speaking peak noise ranges) whereas pushing 25% extra air than some other Alienware desktop launched within the final three years. The stable tempered glass facet panel ensures that warmth goes straight to the again, as that is the one escape route. 

Regardless of the shortage of an exhaust fan (which Alienware reps informed us truly impede air movement at low RPMs) we may put our hand behind the system and really feel the heat waft out the rear. On the highest surrounding the cooler is a gasket system that stops air from escaping upwards, and so it needs to be pressured out the rear. It really works so effectively it is received me reconsidering my very own setup. Additionally notice, that optimistic stress within the system means no mud can be sucked into random openings within the chassis, so the internals ought to stay cleaner than many programs, for longer intervals.

To make this all work with a stable case entrance, there is a large hole between the entrance panel and the entrance followers. The followers may very well be starved off of air in any other case, which is why mesh is so widespread as of late. Alienware as an alternative selected to maintain the stable entrance, however to place a 30-millimeter hole on either side. That may be a type of best-of-both-worlds method which retains direct noise to a minimal, however lets loads of air in. Something smaller than 30mm, Alienware says, and the entrance followers begin to trigger a wind tunnel that would end in bizarre noises, starved followers, or each. 

Alienware Space-51 Connectivity and Repairability

On the rear of the Space-51, we are able to discover 4 USB-C ports, two of that are Thunderbolt 4 and the opposite two are 10Gbps USB 3.2. Beneath that sit 5 USB 2.0 Sort-A ports, two of which assist fast charging, and a single 5Gbps USB 3 port. At first it struck us as sort of odd to have a single high-speed Sort-A port, however aside from a USB 3 exhausting drive for backup, there’s not a lot purpose. The quicker 10Gbps or Thunderbolt ports can deal with anything. These Sort-A ports are helpfully blocked collectively, subsequent to the two.5 Gbps Ethernet port. Digital S/PDIF optical output, analog line in, and analog line out full the port array. 

The highest entrance of the system additionally has a pair of USB 3 5Gbps Sort-A ports and two USB 3.2 10Gbps Sort-C ports. Lastly, there’s analog enter for a microphone and headphone output for a headset. 

Transferring down the again, the GeForce RTX 5090 has one HDMI 2.1 port and a trio of DisplayPort ports that would deal with the beastly 4K 240 Hz QD-OLED show that we acquired on mortgage to assist take a look at the Space-51. Transferring down farther we are able to lastly arrive to the Wi-Fi/Bluetooth antenna posts and the facility provide’s enter. 

The Space-51 makes use of industry-standard type issue parts. Except for the standard DDR5 DIMM slots (there are solely two, since including greater than that sometimes ends in decreased speeds and worse efficiency) and M.2 SSDs, it additionally means an ATX type issue motherboard and an ATX 12VO energy provide. Meaning if sometime out of guarantee, an influence provide dies otherwise you wish to improve the system with a brand new platform and motherboard, the Space-51 is as much as the duty. Earlier Space-51 programs over time have used uncommon non-standard motherboards and energy provides. This signifies a brand new course for Alienware, which its rivals have benefited from for a very long time. 

That is rather less true for the RGB LEDs contained in the Space-51’s case. An adapter is required must you wish to use them with one other motherboard, however Alienware makes the AlienFX cable conversion equipment out there in order that any ATX motherboard can run the lighting within the case. This add-on is $35, which appears cheap sufficient to us. 

The hole supplies loads of room for airflow with no howling wind tunnel

Alienware Peripherals

Alienware additionally despatched over its AW3225QF. That is a 32-inch curved 4K QD-OLED monitor with a 240 Hz refresh fee. That is clearly tremendous quick and if the {hardware} helps it, tremendous easy. It pairs actually properly with the GeForce RTX 5090 within the Space-51. It has two RGB LED zones on the again of the monitor, so that you won’t see them if it is going through a wall.

For connectivity, the AW3225QF has one DisplayPort enter and two HDMI 2.1 ports. All of those assist the total 240 Hz refresh fee and three,840×2,160 decision utilizing DSC, and helps G-sync compatibility and Dolby Imaginative and prescient HDR. It will get good and brilliant, however it looks as if it would run the pixel refresh program at idle extra ceaselessly with the upper brightness. If the $1,200 retail value of the AW3225QF is just too wealthy in your blood, don’t be concerned; there are less expensive choices with stable specs, like a 27″ 1440p mannequin with an excellent quicker 280 Hz refresh fee. 

A type of HDMI 2.1 ports additionally helps eARC for sound bars and receivers, so you may get Dolby Atmos spatial encompass sound within the easiest way doable. There’s additionally a complete of three 5 Gbps USB 3 ports and one 5 Gbps Sort-C port. In contrast to some Dell Ultrasharp shows, there isn’t any built-in KVM funcionality, however we do not actually anticipate that from a gaming monitor. Swapping inputs to connect with a console looks as if sufficient sharing for us. 

The corporate additionally included the optionally available 2.4 GHz wi-fi Professional Keyboard and Mouse equipment. These use USB-C receivers with a intelligent coupler that allows you to plug the charging cables in to attach the receivers with out having to futz round behind the system. And if you happen to do not like wi-fi peripherals, they each work with out the receivers in a wired vogue too. 

The keyboard has linear mechanical keys and may be shared with not solely the two.4 GHz receiver but additionally three Bluetooth units with a button to modify between the 2. It is received a tenkey-less design and a single RGB LED zone, and so far as gaming keyboards go it is just about precisely what most players would need. The white colorway matches the Space-51 completely. The mouse is fairly light-weight and cozy, and to save lots of on battery it does not function any RGB lighting past a small energy indicator. 

Now that we have met the Space-51 and all of its equipment, it is time to see how this technique performs…