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Black tower desktop with RGB lighting and liquid cooling visible through glass side panel

HP

HP OMEN 45L Gaming Desktop PC Intel Core Ultra 9 285K RTX 5090 32GB 128GB DDR5 4TB

SKU CH-5RK7-WXA2T

Tower gaming desktop with Intel Core Ultra 9 285K, GeForce RTX 5090 32GB GDDR7 graphics, 128GB DDR5 memory, 4TB PCIe NVMe SSD, 1200W PSU, 360mm AIO cooling and Wi-Fi 6E

  • TypeGaming & Entertainment
  • Form FactorTower
  • Power Supply1200W
  • MonitorMonitor not included
  • Operating SystemWindows 11 Pro
  • CPU TypeIntel Core Ultra 9
  • Intel Core Ultra 9 285K with 24 cores and 5.7 GHz boost for heavy multitasking
  • GeForce RTX 5090 32GB GDDR7 graphics for 4K gaming and VR
  • 128GB DDR5 memory keeps large workloads responsive
  • 4TB PCIe NVMe SSD stores the full library with fast loads
  • 360 mm AIO liquid cooling and 1200W PSU sustain peak performance

HP OMEN 45L Gaming Desktop

This HP OMEN 45L tower is built for high-end gaming and AI workloads. It ships with a 15th Gen Intel Core Ultra 9 285K processor featuring 24 cores and 36MB cache, paired with an NVIDIA GeForce RTX 5090 graphics card equipped with 32GB GDDR7 memory. The system includes 128GB of DDR5 RAM and a 4TB PCIe NVMe SSD running Windows 11 Pro.

Setup checks before ordering

Verify that your display supports HDMI, DisplayPort or Thunderbolt 4 inputs to match the rear I/O panel. Ensure your network environment can use Wi-Fi 6E AX211 or wired RJ-45 for full connectivity. The 1200W power supply requires a compatible mains outlet and sufficient circuit capacity. Confirm physical space for a chassis measuring 18.5 by 21.9 by 8 inches.

Build quality and daily connections

A 360mm AIO liquid cooler handles thermal loads for the 24-core CPU while RGB fans provide internal airflow. The black tower chassis weighs 46lb and uses a tower form factor for standard component layout. Front and rear ports include six USB 2.0 ports, one USB 3.2 Type-C, Thunderbolt 4, HDMI, three DisplayPort outputs and a headphone/microphone combo jack. A Dockztorm USB hub is included for additional peripheral expansion.

Highlights

  • Intel Core Ultra 9 285K with 24 cores and 5.7 GHz boost for heavy multitasking
  • GeForce RTX 5090 32GB GDDR7 graphics for 4K gaming and VR
  • 128GB DDR5 memory keeps large workloads responsive
  • 4TB PCIe NVMe SSD stores the full library with fast loads
  • 360 mm AIO liquid cooling and 1200W PSU sustain peak performance

Specifications

BrandHP
ModelOMEN
TypeGaming & Entertainment
Form FactorTower
Power Supply1200W
MonitorMonitor not included
Operating SystemWindows 11 Pro
CPU TypeIntel Core Ultra 9
L3 Cache Per CPU36MB
GPU/VGA TypeGeForce RTX 5090
Graphics InterfaceDedicated Card
Virtual Reality ReadyVR Ready
Memory Capacity128GB DDR5
SSD4 TB
HDDNo
Storage Spec4TB PCIe SSD
Optical Drive TypeNo
Screen SizeNo Screen
WLANWi-Fi 6E AX211
BluetoothBluetooth 5.4
Card ReaderNo
RJ45Yes

Questions about this item

Does the HP OMEN 45L include a monitor or do I need to buy one separately?

The system ships without a monitor; you will need to purchase a display separately and connect it via the HDMI or three DisplayPort outputs on the RTX 5090 graphics card.

Which memory configuration is installed in this model?

This unit comes with 128GB of DDR5 DIMM memory already fitted across the motherboard slots, so no additional RAM purchase is required for the advertised specification.

What does the 5.7GHz maximum turbo frequency mean for actual gaming performance?

The Intel Core Ultra 9 285K can boost up to 5.7GHz on its performance cores, giving high single-thread speed that helps drive high frame rates in CPU-bound titles when paired with the RTX 5090 32GB GDDR7 GPU.

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