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Black mid-tower desktop with LCD liquid cooler and RGB lighting

HP

HP OMEN 45L B91WJAA#ABA Gaming PC Core Ultra 9 285K RTX 5090 32GB 64GB DDR5-5600 2TB NVMe

SKU CH-9833-FVTQB MPN B91WJAA#ABA

Gaming desktop with Intel Core Ultra 9 285K, 64GB DDR5-5600, NVIDIA RTX 5090 32GB GDDR7, 2TB NVMe and 360mm LCD liquid cooler

  • ProcessorIntel Core Ultra 9 285K (3.2 GHz)
  • Memory size64 GB DDR5-5600
  • Graphics memory32 GB GDDR7
  • Storage drive2 TB PCIe M.2 NVMe Gen4 SSD
  • CPUIntel Core Ultra 9 285K
  • Wi-Fi standardWi-Fi 6E
  • Intel Core Ultra 9 285K 24-core CPU delivers extreme processing power
  • NVIDIA GeForce RTX 5090 32GB GDDR7 graphics enables advanced AI and ray tracing
  • 64GB DDR5-5600 memory provides high-speed multitasking headroom
  • 2TB PCIe NVMe Gen4 SSD offers rapid game and file loading
  • 360mm LCD liquid cooler maintains thermal performance under heavy loads

Built for extreme gaming

The HP OMEN 45L desktop pairs an Intel Core Ultra 9 285K 24-core processor with an NVIDIA GeForce RTX 5090 32GB GDDR7 graphics card. It includes 64GB of DDR5-5600 memory and a 2TB PCIe NVMe Gen4 SSD. A 360mm LCD liquid cooler manages thermals inside a tool-less chassis designed for straightforward component swaps.

Suits 4K creators and AI developers

This system targets users who need maximum single-GPU graphics memory and high core counts for rendering, simulation or local AI workloads. The 32GB frame buffer and 64GB system memory handle large datasets without paging. Buyers who only play at 1440p or rely on cloud compute will find the specification excessive for their workflow.

Verify case clearance and power budget

The 360mm liquid cooler requires a mounting location that accepts a 360mm radiator. Confirm your power supply delivers sufficient PCIe connectors for the RTX 5090 and that the motherboard provides an M.2 slot wired for PCIe Gen4 to retain the SSD’s rated speed. Windows 11 Pro is pre-installed.

How it compares

Measured against everything we stock in Gaming PCs, at today’s prices. Recalculated every night.

Price $3,383.99
Pricier than about 66% of the 24,925 comparable items (median $2,694.99).
Memory size 64 GB DDR5-5600
Higher than about 60% of the 11,703 comparable items (median 32 GB).
Graphics memory 32 GB GDDR7
Higher than about 91% of the 10,551 comparable items (median 16 GB).

New to this? Buying a gaming PC with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHP
Product lineOMEN
Model nameOMEN 45L
Part numberB91WJAA#ABA
Year of release2025
Product typeGaming & Entertainment
Recommended useConsumer / Gaming
Product colorBlack
Processor
ProcessorIntel Core Ultra 9 285K (3.2 GHz)
CPUIntel Core Ultra 9 285K
CPU modelIntel Core Ultra 9 285K (3.2 GHz)
CPU socketFCLGA1851
Turbo clock speed5.7 GHz
Base clock speed3.2 GHz
Memory
Memory size64 GB DDR5-5600
RAM capacity64 GB DDR5
RAM type and speedDDR5 5600
Total memory slots4
Free memory slots0
Max supported RAM128 GB
Storage
Storage drive2 TB PCIe M.2 NVMe Gen4 SSD
SSD storage2 TB NVMe
Graphics
Graphics memory32 GB GDDR7
GraphicsNVIDIA GeForce RTX 5090 32 GB GDDR7
GPUNVIDIA GeForce RTX 5090 32 GB GDDR7
VR readyYes
Connectivity
Wi-Fi standardWi-Fi 6E
Network speed2.5 Gbit/s
Wired network2.5GbE LAN
Wireless adapter2 × 2 Wi-Fi 6E
Wi-Fi2 × 2 Wi-Fi 6E 802.11ax
Bluetooth support5.3
Ports & slots
Front USB ports2 x USB 3.2 (GEN 1 TYPE A)
2 x USB 2.0 (Type-A)
Video connectors1 x HDMI, 3 x DisplayPort
Size & build
Form factorDesktop
Case styleATX Tower
Shipping weight25.86 kg
Package size686 × 610 × 330 mm
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Accelerated
Cooling method360 mm LCD Liquid Cooler

Questions about this item

What display connector does the RTX 5090 graphics card need for 32GB GDDR7 output?

The RTX 5090 uses standard DisplayPort and HDMI ports. Connect a compatible monitor cable to one of those ports on the rear I/O panel.

Will the 2.5GbE LAN port negotiate down to my existing 1GbE switch?

Yes, the 2.5GbE LAN port auto-negotiates to 1GbE when connected to a slower switch or router.

How can I confirm the 360mm LCD liquid cooler is running after first boot?

The LCD screen on the cooler block displays real-time coolant temperature and pump speed once Windows 11 Pro loads.

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