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Black mid-tower desktop with 360mm ARGB liquid cooler visible through glass side panel

Thermaltake

Thermaltake T6BK-Z890-590-LCS Gaming PC Intel Core Ultra 9 285K 32GB DDR5 RTX 5090 32GB 2TB SSD

SKU CH-P4V1-2S0J4 MPN T6BK-Z890-590-LCS

A 24-core Intel Core Ultra 9 285K desktop with 32 GB DDR5 6400, 2 TB SSD, GeForce RTX 5090 32 GB GDDR7, 360 mm AIO cooling and a 1200 W 80Plus Gold ATX 3.0 supply

  • TypeGaming & Entertainment
  • AI FeaturesAI Ready
  • UsageConsumer / Gaming
  • ColorBlack
  • ProcessorIntel Core Ultra 9 285K
  • Processor Main Features64 bit 24-Core Processor
  • 24-core Intel Core Ultra 9 285K handles heavy multitasking with 36 MB L3 cache
  • 32 GB DDR5 6400 memory keeps data flowing for gaming and creative workloads
  • 2 TB NVMe SSD provides fast storage for large game libraries
  • RTX 5090 32 GB GDDR7 delivers high-frame-rate 4K gaming and AI acceleration
  • 360 mm ARGB AIO and 1200 W 80Plus Gold PSU sustain peak performance under load

Ready-to-Game Desktop with Intel Core Ultra 9 285K

This Thermaltake LCGS Reactor u2890 desktop ships with a 24-core Intel Core Ultra 9 285K processor, 32GB DDR5 6400 memory, and an NVIDIA GeForce RTX 5090 32GB GDDR7 graphics card. A 2TB NVMe SSD and Windows 11 Home are pre-installed. Liquid cooling and a 1200W 80Plus Gold ATX 3.0 power supply support the high-end components.

Suits 4K gamers and AI workloads.

The system targets enthusiasts who need maximum frame rates at 4K resolution and compute headroom for AI-ready tasks. The 360mm AIO cooler and full-size RTX 5090 demand a spacious ATX case with strong airflow. Buyers who want a small-form-factor PC or a lower-power workstation should look elsewhere.

Graphics card with 32GB GDDR7 VRAM

The GeForce RTX 5090 includes 32GB of GDDR7 video memory, a specification that determines whether the PC can hold large models or textures entirely on the GPU. If your workload fits within that VRAM limit, the card delivers the bandwidth needed; if it exceeds it, you will need a different configuration.

Highlights

  • 24-core Intel Core Ultra 9 285K handles heavy multitasking with 36 MB L3 cache
  • 32 GB DDR5 6400 memory keeps data flowing for gaming and creative workloads
  • 2 TB NVMe SSD provides fast storage for large game libraries
  • RTX 5090 32 GB GDDR7 delivers high-frame-rate 4K gaming and AI acceleration
  • 360 mm ARGB AIO and 1200 W 80Plus Gold PSU sustain peak performance under load

Specifications

BrandThermaltake
ModelLCGS Reactor u2890
Part NumberT6BK-Z890-590-LCS
TypeGaming & Entertainment
AI FeaturesAI Ready
UsageConsumer / Gaming
ColorBlack
ProcessorIntel Core Ultra 9 285K
Processor Main Features64 bit 24-Core Processor
Cache Per Processor36 MB L3 Cache
Memory32GB DDR5
Storage2TB SSD
GraphicsNVIDIA GeForce RTX 5090 32GB
EthernetGigabit Ethernet
Power Supply1200W - 80Plus Gold ATX 3.0
Cooling SystemThermaltake 360mm ARGB AIO
Operating SystemWindows 11 Home
ChipsetIntel Z890
CPU TypeIntel Core Ultra 9 (Series 2)
CPU NameIntel Core Ultra 9 285K
L2 Cache Per CPU40 MB
L3 Cache Per CPU36 MB
CPU Main Features64 bit 24-Core Processor
GPU/VGA TypeGeForce RTX 5090
GPU Memory32 GB GDDR7
Virtual Reality ReadyYes
Memory Capacity32GB DDR5
Memory SpeedDDR5 6400
Maximum Memory Supported128 GB
SSD2TB
Optical Drive TypeNo
Audio Channels7.1 channels
LAN Speed10/100/1000Mbps
WLAN802.11be Wireless LAN
WiFi GenerationWi-Fi 7
BluetoothBluetooth 5.4
Shipping weight20.41 kg
Package size660 × 483 × 432 mm

Questions about this item

What clearance does the 360 mm ARGB AIO radiator need inside the case?

The 360 mm radiator requires a mounting location that can accept three 120 mm fans in a row, typically the front, top or rear of a mid-tower or larger chassis.

Which power connector must be attached to the RTX 5090 during installation?

Connect the 12VHPWR cable from the 1200 W 80Plus Gold ATX 3.0 power supply directly to the graphics card before closing the case.

How far can the DDR5 memory be upgraded later?

The Z890 motherboard supports up to 128 GB of DDR5 6400 memory across its four slots.

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