KRONOS 840A-G5
High Performance Workstation
- Accelerated AMD Ryzen™ Threadripper™ 3960X / 3970X / 3990X Processor
- Up to 256 GB of DDR4 3200 MHz
- Up to (3) NVIDIA® Quadro® RTX / GeForce® RTX / Tesla® or AMD Radeon™ Pro WX
- (2) 3.5” + (4) 2.5” SATA/SSD
- High Performance Liquid Cooled System
- 1600W 80 PLUS® Platinum PSU

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Form Factor | Mid-Tower |
Chipset | AMD sTRX4 |
Processor | AMD Ryzen™ Threadripper™ 3960X - 24 Cores (48 Threads) Accelerated to 4.2GHz / sTRX4 AMD Ryzen™ Threadripper™ 3970X - 32 Cores (64 Threads) Accelerated to 4.1GHz / sTRX4 AMD Ryzen™ Threadripper™ 3990X - 64 Cores (128 Threads) Accelerated to 3.7GHz / sTRX4 |
Cooling System | High Performance Liquid Cooled System, Closed Loop, Maintenance Free and Datacenter Compliant with Exclusive Leak Detection System |
Memory | Up to 256 GB of DDR4 3200 MHz (Quad Channel - 8 DIMMs Slots) |
Network Controller | (1) Gigabit Networks Port Intel® I211-AT (1) 2.5GbE Realtek® RTL8125-CG Optional add-on cards available* |
Video/GPU | Up to (4) Graphic Cards (4 x PCIe 4.0 - x16/x16/x16/x4) |
Storage Controller | AMD TRX4 chipset 6 Gb/s SATA controller - Support RAID 0, 1,and 10 (2) M.2 Socket 3, with M key, type 22110 storage devices support (PCIe 4.0 x4 mode) (1) M.2 Socket 3, with vertical M key, type 22110 storage devices support (SATA & PCIe 4.0 x4 mode) |
Drive Bays | (2) 3.5” and (4) 2.5” SATA/SSD |
Expansion Slots | (3) PCIe 4.0 x16 (x16 mode) (1) PCIe 4.0 x4 (x4 mode) |
I/O Ports Back | (2) LAN (RJ45) port(s), (8) USB 3.2 Gen 2 (7x Type-A + 1x USB Type-C), (4) USB 2.0, (1) Optical S/PDIF out, (1) USB BIOS Flashback Button(s), (5) 8-channel Audio I/O |
I/O Ports Front | (2) USB 3.1, (1) Mic, (1) Audio out |
Power Supply | 1600W High Efficiency 80 PLUS® Platinum Certified |
Environment | Operating: 10ºC to 25ºC (50ºF to 77ºF) Non-operating: -20ºC to 70ºC (-4ºF to 158ºF) @ 5% to 95% (non-condensing) |
Dimensions (DxWxH) | 17.7 in x 8.6 in x 18.6 in (450 mm x 220 mm x 472 mm) |
Estimated Weight | 12 kg (26.5 lbs) |
Warranty | CIARA’s limited hardware warranty includes a one year, parts and labour with return to CIARA USA or Canada. Customers may purchase an extended warranty of up to 3 years on parts and labour with different support levels. Please contact CIARA at 1-877-242-7272 for complete warranty details including limitations and transferability. |
OS Support | Microsoft® Windows® 10 Pro 64 Bit |
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Trademarks: AMD, and the AMD Arrow logo, AMD EPYC, Ryzen, Threadripper and combinations thereof are trademarks of Advanced Micro Devices Inc.