What Revit workstation should AEC firms buy for rendering and AI?

A Revit workstation bought this December will likely still be on a desk in 2029. For a principal or office manager at an architecture or engineering firm, the year-end refresh is the chance to match each seat to the models, renderings and AI tools that person actually uses. Here is how to size the order, set up the new machines and retire the old ones.

Why refresh workstations before year-end?

Two dates make December a natural deadline. Equipment has to be placed in service during the tax year to be considered for that year's deduction, and the Windows versions many firms bought machines on are running out of support.

For tax years beginning in 2026, IRS Revenue Procedure 2025-32 sets the Section 179 expensing limit at $2,560,000, reduced dollar for dollar once qualifying property placed in service during the year exceeds $4,090,000. IRS Publication 946 explains that the deduction applies to property placed in service, so a workstation still in its box on December 31 does not count. Whether expensing makes sense for your firm is a question for your CPA.

On the software side, Microsoft's lifecycle page shows Windows 11 Home and Pro version 24H2 reached end of servicing in October 2026. Version 25H2 is serviced until October 2027, and 26H2 until October 2028. Windows 10 support ended in October 2025. Any machine that cannot move to a current Windows 11 release is a candidate for replacement.

What are the Revit 2027 system requirements?

Revit 2027 requires 64-bit Windows 11, and Autodesk publishes its hardware requirements in three tiers. Autodesk's system requirements list them as Minimum (entry-level), Value (balanced price and performance) and Performance (large, complex models). Autodesk also maintains a separate guide for large and complex Revit projects.

The practical step is to match each person to a tier by the work they do:

• Project architects and BIM managers who open central models, run clash checks or work in linked models all day belong at the Performance tier.
• Designers working in smaller models, families and sheets can usually work at the Value tier.
• Staff who mostly view, mark up or manage documents can stay near the Minimum tier, or work from the web.

Size memory for the models you expect to be working in two years from now, since a workstation bought this month will likely still be on a desk then.

How much GPU memory does real-time rendering need?

At least 4 GB of video memory for Enscape, with 8 GB or more recommended. Chaos's Enscape hardware guidance sets 4 GB as the floor for official support, recommends 8 GB or more, and recommends 12 GB for VR. It also notes that the full ray tracing feature set is available only on NVIDIA RTX cards, and that Enscape does not use the CPU for rendering, so the processor matters only if it bottlenecks the GPU.

Two decisions follow:

• Decide which seats need rendering at all. Visualization staff and designers who present to clients need the stronger card. Most production and administrative seats do not.
• Check each rendering tool you use. Enscape, Twinmotion, Lumion, D5 and V-Ray publish their own requirements, and they differ. Spec the card to the most demanding tool that person runs.

If your firm presents in VR, the 12 GB recommendation is the floor for those machines.

Does an AEC firm need an AI PC?

Only for staff whose tools use the neural processing unit. Microsoft's Copilot+ PC requirements call for an NPU capable of 40 or more trillion operations per second (TOPS), 16 GB of memory and a 256 GB SSD. Those specs support Windows' on-device AI features.

AI features in design software may run in the vendor's cloud, on the GPU, or on an NPU, depending on the product. Before paying for one, list the AI features your team actually uses, then check whether each runs locally or in the cloud. For staff who mainly work in Microsoft 365, email and meetings, a Copilot+ laptop can make sense. For modeling and rendering seats, the GPU and memory budget usually matters more.

Whatever the hardware, set rules for what project data staff can put into AI tools. Client drawings and contract documents are confidential, and some owners and agencies restrict where their data can go.

What should every new workstation include for security?

The same baseline as the rest of the fleet, set up before the machine reaches a desk:

• A current Windows 11 Pro or Enterprise release (25H2 or later), with TPM 2.0 enabled, which Windows 11 requires.
• Full-disk encryption (BitLocker), with recovery keys stored centrally.
• Enrollment in device management, so patches, the firewall and anti-malware are enforced from day one.
• Multifactor authentication for Windows sign-in and for Autodesk, Microsoft 365 and file-sharing accounts.
• No local administrator rights for daily use. Software like plug-ins and render engines should be installed through a managed process.

If the firm handles controlled unclassified information on defense work, the new machines are part of the system described in your NIST SP 800-171 system security plan, and the plan should be updated when they arrive.

What happens to the old machines?

They leave the firm with whatever is on the drive unless someone removes it. That can include project files, bid documents, cached credentials and HR records.

NIST SP 800-88 Rev. 2 is the federal reference for media sanitization. For most firms the practical options are a verified cryptographic or vendor-supported erase of the SSD, or physical destruction by a recycler that issues a certificate listing each serial number. Keep those certificates with your asset records. Remove each machine from device management, Autodesk and Microsoft 365 assignments at the same time, so licenses return to the pool for the new hardware. If the refresh lines up with your Autodesk renewal, it is a good moment to right-size named user seats.

What should you do before December 31?

• Inventory every workstation with its Windows version, memory, GPU, purchase date and primary user.
• Flag machines that cannot run a supported Windows 11 release or that sit below the Revit tier their user needs.
• Assign each user a tier (Performance, Value or Minimum) and a rendering need (none, standard, VR).
• Order early enough that machines arrive and are set up before the holidays.
• Confirm with your CPA whether equipment must be in service by December 31 for your tax plans.
• Schedule imaging, encryption and enrollment before machines are handed out.
• Book certified wiping or destruction for the machines you retire.

How does s90 help?

s90 works with architecture, engineering and construction firms to plan workstation refreshes around real workloads: inventorying the current fleet, matching specs to Revit and rendering needs, and setting up each machine with encryption, management and MFA before it ships. We also handle retirement, including license reclamation and documented data destruction. If a year-end refresh is on the table, we can help you size it.