NH-D15 has no real expiration date. The heatsink should last a lifetime. The fans are warrantied for more than 5 years on their own as well, and are easily replaced.
Just appears to be an off the shelf AIO, they can last from 3-5 years before pump failure. They can last longer, but there is no guarantee that the CPU block won't clog up or the pump may fail.
What you need for cooling depends entirely on what CPU you are going with for these builds. Though I will say that the chances of an AIO cooled system being delivered to you intact is higher than with a very large air cooler.
These are just PCs made with off the shelf components. Any new build from them is going to be with components that are different from a few years ago. So while an existing user can judge assembly quality, delivery, support, etc. The hardware itself will always have a relatively short time it has been available on the market, so long term reviews aren't really a thing for anything you purchase today.
Without a complete parts list, hard to judge what you are getting as compared to doing it yourself. An inexperienced builder can assemble a computer in under one day, and there are plenty of complete video guides for what to do.
I know Digital Storm has a decent reputation, but they are still vastly more expensive than building yourself. All you really gain is a warranty and someone to call if things go wrong. Based on the parts selection they offer on their uncustomized bundles, they are offering relatively cheap components at premium prices, but that is to be expected with any boutique builder.
Very helpful
Here are the full specs of what i am thinking :
Chassis Model: Digital Storm Velox
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i9-14900KS (6.2 GHz Turbo) (32-Thread) (24-Core) 3.2 GHz (14th Gen) <br><strong></strong>
Motherboard: ASUS ROG Maximus Z790 Dark Hero (Wi-Fi) (Z790) (Up to 3x PCI-E) (No SLI) (DDR5) <br><strong></strong>
System Memory: 128GB DDR5 4800MHz Kingston FURY Beast <br><strong></strong>
Power Supply: 1500W Corsair HX1500i (Modular) (80 Plus Platinum) <br><strong></strong>
Storage Set 1: 1x SSD M.2 (4TB Kingston Fury Renegade) (NVM Express) <br><strong></strong>
Storage Set 2: 1x SSD M.2 (4TB Kingston Fury Renegade) (NVM Express) <br><strong></strong>
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 1x GeForce RTX 4090 24GB (VR Ready)
Sound Card: Creative Sound Blaster AE-9 (Hi-Res) (Ultimate Audio Playback) <br><strong></strong>
HPC Processor: - No Thanks
Extreme Cooling: AIR: Stage 2: Noctua NH-D15 chromax.black (Extreme Performance) <br><strong></strong>
Cable Management: Premium Cable Management (Strategically Routed & Organized for Airflow)
Chassis Fans: Cooler Master MasterFan Halo (RGB Fans) (Remote Control Only) <br><strong></strong>
Internal Lighting: Remote Controlled Advanced LED Lighting System (Multiple RGB Color Modes)
CPU Boost: Turbo Boost Technology
Boost Graphics Card(s): - No Thanks, Please do not overclock my video card(s)
Boost OS: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows 11 Home (64-Bit)
Recovery Tools: USB Drive - Windows Installation (Format and Clean Install)
Virus Protection: Windows Defender Antivirus (Built-in to Windows)