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Small black desktop tower with front USB-C and USB-A ports

HP

HP ProDesk 400 G9 SFF desktop PC i7-14700 16GB DDR5 512GB

SKU CH-H0JK-SBYBT

Business desktop with 20-core Intel Core i7-14700, 16 GB DDR5, 512 GB SSD, triple 4K display support and Windows 11 Pro

  • ProcessorIntel Core i7 14th Gen
  • RAM capacity16 GB DDR5
  • SSD storage512 GB PCIe
  • GraphicsIntel UHD Graphics 770
  • CPU modelIntel Core i7-14700
  • Wi-Fi standardWi-Fi 5

Configuration 16GB RAM · 512GB SSD

  • 20-core Intel i7-14700 handles heavy workloads
  • 16GB DDR5 memory runs at 4800 MT/s
  • 512GB SSD provides fast boot and load times
  • Triple 4K display support via DP and HDMI 1.4
  • Compact SFF chassis fits tight desk spaces

Business SFF desktop

The HP ProDesk 400 G9 is a small-form-factor desktop built for office and professional workloads. It ships with Windows 11 Pro and a wired keyboard and mouse combo so it is ready to deploy immediately. The Intel Core i7-14700 processor provides 20 cores and 28 threads for multi-tasking across business applications.

Thermals and power

Air cooling handles the 2.10 GHz base clock and 5.40 GHz turbo frequency within the compact 10.6 x 3.7 x 12.1 in chassis. The system weighs 9.25 lbs and runs on standard mains power without requiring an oversized supply. Fan noise stays low during typical office tasks such as document editing and video calls.

Memory and storage fit

The board accepts DDR5 4800 memory up to 64 GB; the unit arrives with 16 GB configured as 8 GB x 2. Storage uses an M.2 slot that supports NVMe drives up to 2 TB; a 512 GB drive is installed. Buyers who need more than 64 GB of RAM or more than 2 TB of NVMe storage should choose a different platform.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $809.99
Pricier than about 70% of the 14,711 comparable items (median $494.99).
RAM capacity 16 GB DDR5
Typical for this category: the median of 13,125 items is 16 GB.
SSD storage 512 GB PCIe
Typical for this category: the median of 11,342 items is 512 GB.

Specifications

Product
Brand nameHP
Product lineProDesk
Model name400
Product typeBusiness Desktops & Workstations
Recommended useWork / Business
Product colorBlack
Processor
ProcessorIntel Core i7 14th Gen
CPU modelIntel Core i7-14700
Turbo clock speed5.4 GHz
Base clock speed2.1 GHz
L3 cache per CPU33 MB
Memory
RAM capacity16 GB DDR5
RAM type and speedDDR5 4800
Memory configuration8 GB x 2
Total memory slots2
Free memory slots2
Memory slots2 total
Max supported RAM128 GB
Storage
SSD storage512 GB PCIe
Graphics
GraphicsIntel UHD Graphics 770
Audio & video
Audio chipIntegrated
Connectivity
Wi-Fi standardWi-Fi 5
Network speed10/100/1000 Mbit/s
Ethernet controllerIntegrated
Wi-Fi802.11ac Wireless LAN
Bluetooth supportYes
Ports & slots
Front USB ports4
Front audio jacks1
Video connectors1 Display Port, 1 HDMI
Rear USB ports5
Ethernet port1 port
Rear audio jacks1 port
Size & build
Form factorSlim/Small Form Factor
Overall dimensions12.1 in × 10.6 in × 3.7 in
Product weight9.25 lb (4.2 kg)
Compatibility
Windows 11 supportReady
In the box
Pointing deviceWired Mouse
Software
Operating systemWindows 11 Pro
More details
Cooling methodAir Cooling
Keyboard typeWired Keyboard

Other versions of this model

5 more in the same range

Questions about this item

How do I install the dual-channel 16 GB DDR5 4800 memory kit, and which slot pairing do installers most often get wrong?

The system ships with two 8 GB DDR5 4800 modules pre-installed in the correct paired slots for dual-channel operation; if you add more memory later, populate the remaining slots as a matched pair to keep the 64 GB maximum supported.

Which component will need replacement first under continuous heavy workloads?

The air-cooling solution on the 20-core i7-14700 will reach its thermal limit before the 512 GB SSD or the 33 MB L3 cache, so sustained turbo at 5.4 GHz may throttle unless ambient temperature stays low.

What maintenance does the pre-installed Windows 11 Pro and 512 GB storage require over time?

Windows 11 Pro receives automatic security updates; the 512 GB drive has no user-serviceable parts, so plan a full backup before the drive reaches its write-endurance rating.

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