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

Thermaltake

Thermaltake Reactor u2870T Gaming PC Intel Core Ultra 9 285K 32GB DDR5 RTX 5070 Ti 2TB T6BK-Z890-57T-LCS

SKU CH-3HHT-1CT2S MPN T6BK-Z890-57T-LCS

Gaming desktop with a 24-core Intel Core Ultra 9 285K, 32 GB DDR5, 2 TB SSD and an RTX 5070 Ti 16 GB GDDR7 graphics card, cooled by a 360 mm ARGB AIO and powered by an 850 W 80Plus Gold ATX 3.0

  • 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 powers heavy multitasking and AI workloads
  • 32GB DDR5 6400MT/s memory delivers high bandwidth for gaming and content creation
  • GeForce RTX 5070 Ti with 16GB GDDR7 drives 4K gaming and ray-traced visuals
  • 2TB NVMe SSD provides fast load times and ample storage for large libraries
  • 360mm ARGB AIO cooler keeps the 24-core CPU at stable temperatures under load

Ready-to-Game Desktop PC

The Thermaltake Reactor u2870T arrives assembled with an Intel Core Ultra 9 285K 24-core processor, 32GB DDR5 6400MT/s RGB memory, a GeForce RTX 5070 Ti graphics card with 16GB GDDR7, and a 2TB NVMe SSD. Windows 11 Home is pre-installed on the Intel Z890 platform. An 850W 80Plus Gold ATX 3.0 power supply and a 360mm ARGB AIO cooler complete the build.

Ideal for AI and High-Refresh Gaming

This system suits creators who need AI-ready compute and gamers targeting high frame rates at 1440p or 4K. The 32GB DDR5 kit and 2TB drive cover most workloads out of the box. Buyers who want more storage bays, additional memory slots, or a different GPU tier should look at a custom-build route instead.

Check Case Clearance and Power Headroom

Verify that your intended location fits a chassis sized for a 360mm radiator and a full-length RTX 5070 Ti card. Confirm the 850W ATX 3.0 unit meets any future upgrade plans you may have. The motherboard supports up to 128GB DDR5 and includes Wi-Fi 7 with Bluetooth 5.4, so ensure your router and peripherals can use those standards.

Highlights

  • 24-core Intel Core Ultra 9 285K powers heavy multitasking and AI workloads
  • 32GB DDR5 6400MT/s memory delivers high bandwidth for gaming and content creation
  • GeForce RTX 5070 Ti with 16GB GDDR7 drives 4K gaming and ray-traced visuals
  • 2TB NVMe SSD provides fast load times and ample storage for large libraries
  • 360mm ARGB AIO cooler keeps the 24-core CPU at stable temperatures under load

Specifications

BrandThermaltake
ModelReactor u2870T
Part NumberT6BK-Z890-57T-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 5070 Ti
EthernetGigabit Ethernet
Power Supply850W 80Plus Gold ATX 3.0
Cooling SystemThermaltake 360mm ARGB AIO
Operating SystemWindows 11 Home
ChipsetIntel Z890
CPU TypeIntel Core Ultra 9
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 5070 Ti
GPU Memory16 GB GDDR7
Virtual Reality ReadyYes
Memory Capacity32GB DDR5
Maximum Memory Supported128 GB
SSD2TB
Optical Drive TypeNo
Audio Channels7.1ch HD Audio
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

Does the Intel Core Ultra 9 285K require a separate monitor, keyboard and mouse to operate?

Yes, the desktop ships without any display or input devices, so you must connect your own monitor, keyboard and mouse to use it.

Will the 360 mm ARGB AIO cooler and 850 W ATX 3.0 power supply fit inside a legacy ATX case I already own?

The system is built into its own Thermaltake chassis; the cooler and PSU are already installed and are not intended for transplant into another case.

How can I confirm the GeForce RTX 5070 Ti is running at its 16 GB GDDR7 specification after Windows 11 boots?

Open Task Manager or GPU-Z and verify the dedicated video memory reads 16 GB and the memory type shows GDDR7.

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