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HP OMEN 40L Desktop Review

HP OMEN 40L Desktop: A Complete Review

Harry Stewart
Looking to knock your playtime up a notch? Then say hello to your new best friend, the OMEN 40L.
Boasting top-tier hardware and a lightning-quick NVIDIA® GPU, this elite gaming desktop is a formidable beast. A hit among hardcore players, it’s got the juice to run Triple-A (AAA) games with silky smooth frame rates and the graphics settings cranked up.
For passionate players prepared to invest in their long-term gaming future, this heavy-duty desktop delivers unbeatable value. From the CRYO CHAMBER™ cooling system to its slick, neon-lit interior, here’s everything you need to know in a comprehensive OMEN 40L review.

What is the OMEN 40L?

The OMEN 40L is one of the best gaming desktops from HP. Packing a potent CPU, bountiful RAM, and a gaming-ready graphics card, this high-end rig runs AAA titles with ease.
An advanced liquid cooling system keeps the rig icy-cold in the heat of battle, while plentiful ports let you plug in all sorts of peripherals. An uncomplicated, tool-free chassis facilitates convenient future upgrades, and its glistening see-through case will make you the envy of your squad.

Top-tier hardware

It’s all about the specs when it comes to a gaming desktop. And the OMEN 40L delivers with top-end hardware for butter-smooth gameplay.
Currently, the fastest OMEN 40L in the UK is the OMEN 40L (GT21-1002na). Released in 2023, this beast sports the following specs:
OMEN 40L GT21-1002na
  • Processor: Intel® Core™ i7 13700K
  • RAM: 32GB RAM
  • Storage: 2TB SSD
  • Graphics: NVIDIA GeForce RTX™ 4080 (16GB)
If an NVIDIA GeForce RTX 4080 feels like overkill, the second-best model ships with a more cost-effective RTX 4070. You won’t get as much “oomph” from the card, but it’s powerful enough to play most games on maximum settings (you may need to ditch ray tracing for 4K). Bear in mind this version also has less RAM and storage. Here’s what you’ll find under the hood of the OMEN 40L (GT21-1002na).
OMEN 40L GT21-1004na
  • Processor: Intel Core i7 13700K
  • RAM: 16GB RAM
  • Storage: 1TB SSD
  • Graphics: NVIDIA GeForce RTX 4070 (12GB)
For players seeking something less financially reckless, the OMEN 40L Desktop (GT21-0010na) offers fast-paced gameplay for a budget-friendly price. You’ll still be able to run big-budget recent releases, just perhaps not on the highest settings. See below for the specs:
OMEN 40L Desktop GT21-0010na
  • Processor: AMD Ryzen™ 5 5600X
  • RAM: 16GB RAM
  • Storage: 1TB SSD
  • Graphics: NVIDIA GeForce RTX 3060 Ti (8GB)
Of course, HP constantly releases new products, including gaming desktops like the OMEN 40L. Take a quick squiz at the HP UK Store to see what else is available today.

Fluid, life-like PC graphics

Swing for one of the top two OMEN 40L gaming desktop models, and you’ll get a beefy NVIDIA GeForce RTX40 Series graphics card. This GPU powers the world’s fastest gaming PCs, providing high-octane performance thanks to NVIDIA Ada Lovelace architecture.
AI-powered DLSS 3 boosts in-game performance to offer the best possible frame rate while enhancing image quality and eliminating bottlenecks. The series also boasts AI system latency reduction to bolster responsiveness, aiming precision, and firing accuracy - first-person shooter fanatics are in for a treat. Ray tracing comes courtesy of the NVIDIA Ada architecture, which simulates realistic lighting behaviour within detailed virtual worlds.
Both the NVIDIA GeForce RTX 4070 and 4080 are 4K-capable cards. The 4080 will let you crank up the settings while playing most big-name games on 4K. As for using the 4070 on 4K, you may have to tone down resource-hungry games a notch, especially when ray tracing is enabled.

A gaming PC that's cool as a cucumber

A gaming PC thats cool
As the action heats up on the battlefield, so too does a GPU. But thanks to HP’s industry-leading CRYO CHAMBER, the OMEN 40L remains cool under pressure. The patented cooling system sees a liquid-cooler radiator channel fresh air from the outside to maintain a stable CPU temperature.
Advanced thermal management technology directs heat away from the processor and cools down other sensitive components. Up to six strategically positioned fans lie scattered around the case to enhance airflow and prevent overheating.
This quiet, efficient, and highly effective cooling system reduces environmental noise and slashes your electricity bill.

Plentiful PC ports

Every seasoned player knows peripherals play a pivotal role in gaming. From headsets to mice and high-refresh rate monitors to mechanical keyboards, these elite add-ons are a must.
The HP OMEN puts all these peripherals and more within easy reach by placing six convenient ports on the front of the case - no need to dig around behind the box. Here’s what you’ll find on the top-front corner:
  • Combo audio jack
  • Mic jack
  • 2 SuperSpeed USB Type-A with HP Sleep on Charge
  • 2 USB Type-A
  • Power button
On the back of the box, a vast selection of useful ports remains hidden out of sight:
  • 1 HDMI
  • 3 DisplayPort™
  • 1 USB Type-C 10Gbps
  • 1 USB Type-C 5Gbps
  • 2 USB Type-A 10Gbps
  • 2 USB Type-A 5Gbps
  • 2 USB 2.0 Type-A
  • 1 audio-in
  • 1 audio-out
  • 1 microphone
  • 1 RJ-45
State-of-the-art WiFi 6 and Bluetooth 5.0 adapters give you the best possible speed on all wireless connections.

A sleek tower desktop design

A sleek tower desktop design
Who doesn’t love the cyberpunk-like vibe of a dapper, neon-lit gaming rig?
The OMEN 40L brings oodles of bling bling with a slick transparent panel showcasing the hardware inside. Programmable RGB lights illuminate the interior, casting colourful shades onto a sci-fi-inspired scene. For gamers who like to take control, OMEN Light Studio lets you personalise the lighting and program cool effects like ambient, interactive, and wave.
Technicoloured, neon-lit rings encircle the front and back fans to accentuate the futuristic aesthetic. A white-blue diamond-shaped OMEN logo on the front-facing panel adds a classy touch.

Endless PC expansion

Future-proofing your OMEN 40L is easy, thanks to the desktop’s dizzying array of expansion slots. Tool-free access means you can pop open the cover and slide new hardware into one of the available slots:
  • 1 PCIe x16
  • 1 PCIe x4
  • 3 M.2 (2 PCIe x4 for SSD, 1 for WLAN)
Each expansion slot has been designed to comply with industry-standard upgrades - no need to fret about compatibility issues. The chassis, for example, adheres to micro-ATX and ATX standards, making it suitable for mainstream motherboard configurations. There’s also plenty of space for industry-standard ATX PSUs should you fancy fiddling with the power supply.
When it comes to cleaning, removable system and power supply filters make the job much easier. Plus, an extensive range of internal storage options lets you customise your storage drives.
Although you won’t have to upgrade your OMEN 40L anytime soon, it’s nice to know the option is there further down the track.

Pre-installed pro-gamer software

Like every OMEN laptop or desktop, the HP OMEN 40L comes with a pre-installed version of OMEN Gaming Hub. From hardware controls to software enhancements and live services, this multi-functional app elevates the in-game experience.
Players can tweak a wide array of settings through the easy-to-use hub. Toggle overclocking to ramp up power or switch to intelligent mode to let the software take control. A system vitals tab displays potential bottlenecks, while the lighting control lets you adjust colours and illumination.
Launch your favourite titles through OMEN Gaming Hub for seamless access to the coaching feature and gallery. An in-built network booster can prioritise gaming above other network traffic to minimise latency and maximise your ping.
Planning on creating content in between frantic, all-night gaming sessions? The NVIDIA GeForce RTX40 Series comes with NVIDIA STUDIO, an industry-leading multi-media production application. This AI-accelerated app offers unrivalled performance for video editing, 3D rendering, and graphic design - it’s a stable, sought-after platform for creators.
Streamers will appreciate NVIDIA Encoder, which offers superior live streaming quality and in-game performance. Broadcast crisp images through AVI encoding support, which has been tweaked to provide better efficiency than H.264.
Then there’s NVIDIA Broadcast, which enhances live streams and TeamSpeak chats through powerful AI enhancements, from noise reduction to virtual backgrounds and room echo removal.


Brimming with top-tier hardware, the HP OMEN 40L is a blistering-fast gaming machine that breezes through modern AAA titles. An NVIDIA RTX lets you pump up the graphics without stutters and tears. Extra grunt comes courtesy of abundant RAM and a high-speed Intel Core CPU.
Specs aside, this premium HP gaming PC is a hit among hardcore players for its first-rate cooling system, neon-lit aesthetic, plus endless ports and expansion slots. OMEN Gaming Hub complements the hardware for a world-class gaming experience.
Ready to plunge into the action? Grab yourself a shiny new HP OMEN 40L from the HP UK Store.

About the Author

Harry Stewart is a Tech Takes contributor covering everything from laptop reviews to how-to guides.

Disclosure: Our site may get a share of revenue from the sale of the products featured on this page.


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