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

HP

HP OMEN 45L Gaming PC Ultra 9 285K RTX 5090 32GB 128GB DDR5 8TB PCIe SSD

SKU CH-G189-83RRZ

A 45L tower with a 24-core Ultra 9 285K, RTX 5090 32GB GDDR7 graphics, 128GB DDR5 memory and an 8TB PCIe SSD

  • TypeGaming & Entertainment
  • Form FactorTower
  • Power Supply1200W
  • MonitorMonitor not included
  • Operating SystemWindows 11 Home
  • CPU TypeIntel Core Ultra 9
  • 24 cores and 24 threads handle heavy multitasking with the Intel Ultra 9 285K
  • 32GB GDDR7 on the GeForce RTX 5090 drives 4K and VR gaming
  • 128GB DDR5 memory keeps large projects and streams running smoothly
  • 8TB PCIe NVMe SSD stores a massive library with fast load times
  • 360mm AIO liquid cooling and 1200W PSU sustain peak performance

HP OMEN 45L Gaming Desktop

The HP OMEN 45L is a pre-built gaming tower designed for users who want maximum performance without assembling components. It ships with Windows 11 Home installed and includes a Dockztorm USB hub accessory.

1200W PSU and 360mm AIO cooling

A 1200W power supply drives the Intel Core Ultra 9 285K processor and GeForce RTX 5090 graphics card. The 360mm all-in-one liquid cooler manages CPU thermals, freeing internal space that large air coolers would occupy.

128GB DDR5 and 8TB PCIe SSD

The 128GB DDR5 memory capacity supports heavy multitasking, content creation workloads and large dataset handling. The 8TB PCIe NVMe SSD provides extensive storage for game libraries and project files. Builders needing ECC memory or additional drive bays should consider other platforms.

Highlights

  • 24 cores and 24 threads handle heavy multitasking with the Intel Ultra 9 285K
  • 32GB GDDR7 on the GeForce RTX 5090 drives 4K and VR gaming
  • 128GB DDR5 memory keeps large projects and streams running smoothly
  • 8TB PCIe NVMe SSD stores a massive library with fast load times
  • 360mm AIO liquid cooling and 1200W PSU sustain peak performance

Specifications

BrandHP
ModelOMEN
TypeGaming & Entertainment
Form FactorTower
Power Supply1200W
MonitorMonitor not included
Operating SystemWindows 11 Home
CPU TypeIntel Core Ultra 9
L3 Cache Per CPU36MB
GPU/VGA TypeGeForce RTX 5090
Graphics InterfaceDedicated Card
Virtual Reality ReadyVR Ready
Memory Capacity128GB DDR5
SSD8 TB
HDDNo
Storage Spec8TB PCIe SSD
Optical Drive TypeNo
Screen SizeNo Screen
WLANWi-Fi 6E AX211
BluetoothBluetooth 5.4
Card ReaderNo
RJ45Yes

Questions about this item

Does the 360 mm AIO keep the Core Ultra 9 285K cool enough for all-day loads?

The 360 mm AIO is factory-fitted to handle the 24-core 285K under sustained boost up to 5.7 GHz.

How loud is the system when the RTX 5090 and CPU run flat-out for hours?

The 360 mm AIO and RGB fans are tuned for low-noise operation even at full GPU and CPU load.

What display cables do I need for the three DisplayPort and one HDMI outputs on the RTX 5090?

Use standard DisplayPort 1.4a or HDMI 2.1 cables — both connectors are native on the card.

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