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OMEN 45L Gaming Desktop GT22-1455xt, Windows 11 Home, Intel® Core™ i9, 16GB RAM, NVIDIA® GeForce RTX™ 4090

OMEN 45L Gaming Desktop GT22-1455xt, Windows 11 Home, Intel® Core™ i9, 16GB RAM, NVIDIA® GeForce RTX™ 4090

Energy Star
EPEAT
ENERGY STAR | Home

DiscontinuedThis product has been discontinued.

Other offers available with the product:

$40 off Microsoft Office with PC purchase.

ColorBlack, glass side panel, dark chrome logo
  • Windows 11 Home
  • 13th Generation Intel® Core™ i9 processor
  • NVIDIA® GeForce RTX™ 4090 (24 GB GDDR6X dedicated)
  • 16 GB memory; 1 TB HDD storage; 1 TB SSD storageSee all Specs

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Product # 33T66AA#ABA
Engineered for Sustainability
3% back in HP Rewards
Built for extreme performance, the OMEN by HP 45L Gaming Desktop PC is designed for gaming from the ground up. Powered by the latest Intel® Processor[1], the OMEN by HP gaming desktop takes cooling to incredible heights with a unique cooling chamber. Created for easy tool-less upgradeability with industry standard components to meet your gaming needs.
OMEN by HP 45L Gaming Desktop GT22-1455t

Operating system

Windows 11 Home

Processor

Intel® Core™ i9-13900K (up to 5.8 GHz with Intel® Turbo Boost Technology, 36 MB L3 cache, 24 cores, 32 threads)[6,7]

Graphics

Discrete: NVIDIA® GeForce RTX™ 4090 (24 GB GDDR6X dedicated)

Memory

Kingston FURY 16 GB DDR5-5200 MT/s XMP RGB Heatsink (2 x 8 GB)

Maximum memory

Supports up to 128 GB max system memory

Memory slots

4 DIMM

Storage

1 TB WD Black PCIe® Gen4 NVMe™ TLC M.2 SSD[21]

Secondary storage

1 TB 7200 rpm SATA HDD

Network interface

Integrated 10/100/1000 GbE LAN

Wireless technology

Intel® Wi-Fi 6E AX211 (2x2) and Bluetooth® 5.3 wireless card (supporting gigabit data rate)[11,12,13]

Power supply

1200 W 80 Plus Gold certified ATX power supply

External I/O Ports

Front : 2 USB Type-A 5Gbps signaling rate (Battery Charging 1.2, HP Sleep and Charge); 2 USB 2.0 Type-A; 1 headphone/microphone combo; 1 microphone
Rear : 1 USB Type-C® 10Gbps signaling rate; 1 USB Type-C® 5Gbps signaling rate; 2 USB Type-A 10Gbps signaling rate; 2 USB Type-A 5Gbps signaling rate; 2 USB 2.0 Type-A; 1 audio-in; 1 audio-out; 1 microphone; 1 RJ-45[19]

Expansion slots

1 PCIe x16; 1 PCIe x4; 3 M.2 (2 PCIe x4 for SSD, 1 for WLAN)

Video connector

1 HDMI;3 DisplayPort™

Audio Features

5.1 surround sound; Omen Audio Control Support DTS:X® Ultra[28]

Energy efficiency

EPEAT® Gold registered
ENERGY STAR® certified

Color

Black, glass side panel, dark chrome logo

Keyboard

HP 310 Black Wired Keyboard and mouse combo

Dimensions (W X D X H)

8.03 x 18.5 x 21.85 in

Weight

49.82 lb

Warranty

1-year limited hardware warranty. Additional information available at www.support.hp.com; 1-year limited technical support for software and initial setup (from date of purchase)

Software included

McAfee Online Protection 30-day trial
1 month trial for new Microsoft 365 customers[24]

System Coolers

360 mm RGB liquid cooler

System Fan

3 x 120 mm aRGB front fans

Sustainable Impact Specifications

Water based paint[41]

Chipset

Intel® Z790

recommended accessories

PATENTED
COOLING,
EXTREME
PERFORMANCE

OMEN 45L Gaming Desktop PC

  CUSTOMIZE

MASSIVE
UPGRADEABILITY

Built for extreme performance, and easy toolless upgradeability. The OMEN 45L is a one stop, can't stop, shop for DIY performance mastery.

OMEN LIGHT STUDIO

Easily personalize your lighting options using a variety of effects like ambient, wave, interactive and more.

Internals may vary.

RTX.
IT'S ON.

Up to

NVIDIA® GeForce
RTX™ 4090

Experience ultra-high performance gaming, incredibly detailed virtual worlds, unprecedented productivity, and new ways to create.

HYPERREALISTIC. HYPERFAST.

With the power of RTX 40 Series and third-gen RT Cores, you can experience incredibly detailed virtual worlds like never before.

NVIDIA DLSS 3

Powered by the new fourth-gen Tensor Cores and Optical Flow Accelerator on GeForce RTX 40 Series GPUs, DLSS 3 uses AI to create additional frames and improve image quality.

DEFINE
THE CUTTING
EDGE

Up to

INTEL® CORE™ i9

Be everything you want to be, in-game and out with optimized performance and new features. Play harder and work smarter with Intel® Core™ Processors.

DEFINE
THE CUTTING
EDGE

Up to

INTEL® CORE™ i9

Be everything you want to be, in-game and out with optimized performance and new features. Play harder and work smarter with Intel® Core™ Processors.

Up to

KINGSTONG FURY 64 GB DDR5-5200 MHZ XMP RGB HEATSINK RAM (4 x 16 GB)

With its higher bandwidth, everything from multi-tasking to playing games gets a performance boost.

Up to

2 TB WD BLACK PCIe® GEN4 NVMe™ M.2 SSD

PCIe-based flash storage is up to 10x faster than a traditional hard drive.

Play your way with the latest in PC gaming performance.

Up to

KINGSTONG FURY 64 GB DDR5-5200 MHZ XMP RGB HEATSINK RAM (4 x 16 GB)

Designed to run more efficiently and more reliably at faster speeds.

Up to

1TB WD BLACK PCIe® GEN4 NVMe™ TLC M.2 SSD

PCIe-based flash storage is up to 10x faster than a traditional hard drive.

DTS: X ULTRA
TECHNOLOGY

By producing authentic, spatially accurate 3D sound through any headset, this technology offers specially tuned audio modes for different game types.

EFFORTLESSLY
CONNECTED

Faster speeds, improved performance and greater capacity with Wi-Fi 6 and Bluetooth 5.3 wireless card.

OMEN GAMING HUB

Monitor sold separately. Internals may vary.

ELEVATE YOUR GAMING EVERY TIME YOU PLAY.

This all-in-one suite seamlessly combines performance optimization, personalization tools, plus game content and services to unlock an unparalleled gaming experience.

OMEN 45L Gaming Desktop GT22-1455xt, Windows 11 Home, Intel® Core™ i9, 16GB RAM, NVIDIA® GeForce RTX™ 4090 is rated 4.3 out of 5 by 351.
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Rated 5 out of 5 by Anonymous from Not only does this hardware look great, it has great performance as well. Great hardware built and delivered quickly
Date published: 2025-01-12
Rated 1 out of 5 by Peter253424565432 from Trash support and overpriced Waste of money. Much better value elsewhere
Date published: 2025-01-10
Rated 1 out of 5 by RMKL from Disappointing Product I had a very disappointing experience with this product and the exchange experience. Right after receiving the PC, the first BIOS update caused the computer to completely stop working. Also there were some other unidentifiable issues making the pc not working properly. I spent hours trying to resolve the issue, but nothing worked. For such an expensive PC, this was a huge letdown. Overall, this has been a horrible experience, and I expected much better from HP.
Date published: 2024-12-30
Rated 1 out of 5 by Bids1989 from Screens go black and Fans blow full throttle When playing games my monitors will go black and the GPU fans will blow full speed. HP deemed it a graphics card error. They replaced and it just last month it started happening again, with a different GPU. I owned this PC for 12 months now and 6 of them this issue has been happening. Hands down the biggest regret purchase of my life.
Date published: 2024-12-26
Rated 5 out of 5 by Rav102 from Best upgrade, at a great price! Was a very easy setup and everything worked flawlessly, would definitely recommend!
Date published: 2024-12-23
Rated 1 out of 5 by MF202 from Came Broken Graphics card came broken, took 6 months for them to ship me a new one. It was dusty, bent, obviously used and broken. Been waiting 6 more months and have had no solutions to fix it. Overall disappointed. Do NOT recommend.
Date published: 2024-12-11
Rated 5 out of 5 by Woodeyee from Excellent An excellent computer. Be prepared for the extra height for the cooling addon
Date published: 2024-11-17
Rated 2 out of 5 by Matt419 from PC shuts down randomly. My PC randomly shuts down while playing games with the fan blowing very loud for a minute or two. I submitted my problem to the Microsoft page and provided a minidump file. They said there's something wrong with the graphics card. This is not something that you want when you're spending over $5000 for a PC.
Date published: 2024-09-29
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I was looking into getting new ram sticks Corsair vengeance pro SL (2x16gb) DDR4 would they be compatible with everything if I take out the Hyper X ones?

Asked by: Jason R217
Yes! Any DDR4 memory will work inside a DDR4 Motherboard, most like you will have to turn on XMP (eXtreme Memory Profile) in the BiOS to get the full performance out of it, you can refer to google to find out how to do that!
Answered by: Fullpower McGee
Date published: 2023-05-27

Can I install Linux on this (dual boot Ubuntu or MX Linux and Windows Pro)?

Asked by: Jacob218
Yes as long as you have a correctly formatted USB drive that has enough storage to hold the Linux programs you can go into BiOS and tell it to boot from the flash drive, refer to google to find out how to that, but it is quite easy to do. 
Answered by: Fullpower McGee
Date published: 2023-05-27

can you add 2x8 RAM to the PC? same ram cards that is already installed for a total of 32 gigs.

Asked by: richard305
Hello, Richard. Thanks for your question. This HP OMEN 45L Gaming Desktop GT22-1455xt supports up to 128 GB DDR5-5200 RAM. There are 4 RAM slots. If you want a total of 32 GB RAM, you can add two 8 GB DDR5-5200 RAM sticks in the last 2 RAM slots. The other option is to put a 16 GB DDR5-5200 RAM in the first slot and put the 8 GB DDR5-5200 RAM in the third slot.
Answered by: HP Team Cheri
Date published: 2023-11-28

I know that RAM can be added, but can processors and graphics cards be swapped in the future?

Asked by: Camron Gr
The GPU on this OMEN 45L Gaming Desktop GT22-1455xt will be able to be upgraded without much or any complications as long as it uses a PCIe x16 slot. Processors can be tricky and may require a motherboard switch as well. This is not always the case but it is a possibility. Hopefully this answer helped and thanks for shopping at HP!
Answered by: HP Team Grant
Date published: 2023-06-17

What motherboard is in this unit

Asked by: shatzer
Hello. Thanks for your question. This HP Omen desktop computer has the ArticOC motherboard.
Answered by: HP Team Cheri
Date published: 2023-12-09

Is it possible to order this model with 64GB or 128GB RAM?

Asked by: Farhad66
Hello. Thanks for your question. There is no option to upgrade this HP OMEN 45L Gaming Desktop GT22-1455xt computer.
Answered by: HP Team Cheri
Date published: 2023-12-09

Does the motherboard support Gen 5 PCIe M.2 SSDs?

Asked by: Pastry
Yes, this OMEN 45L Gaming Desktop GT22-1455xt will support Gen 5 PCIe M.2 SSDs. Thank you for your question!
Answered by: HP Team Grant
Date published: 2023-09-29

Can a WD_Black 4TB SN850P NVMe M.2 SSD with heat sink be added as an additional drive?

Asked by: JLS465
This OMEN 45L Gaming Desktop GT22-1455xt will have two expansion PCIe x4 for SSD slots.
Answered by: HP Team Grant
Date published: 2024-03-05
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Return and exchange information
HP.com will accept returns or exchanges for this product up to 30 days from the date of delivery. A 15% restocking fee may apply. For details, please visit: https://www.hp.com/us-en/shop/cv/returnsandexchanges.