Custom PCs in Montreal

Black custom PC with blue lighting, built and tested by L'Atelier PC in Montreal.
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Montreal and nearby areas · Local service

Custom PCs in Montreal

Gaming PCs for 1440p/4K, multi-monitor trading workstations, or an AI-Box for local LLMs: I help you choose the right parts, assemble the system, configure it, and test it before delivery.

Home or business installation is available within the agreed service area. Components can be supplied turnkey, at cost, on a clear invoice.

  • Compatible parts chosen with you
  • Load-tested before delivery
  • Support after installation

Services

Four starting points, based on how you will actually use the machine

Custom PC assembly

A configuration built around your budget, preferred parts, and how long you want the system to stay useful.

Gaming PCs

A ready-to-play build designed around your games, resolution, monitor, and target performance level.

Multi-monitor trading

A stable workstation for three, four, or six displays, with clean cabling, drivers, and display layout configured properly.

AI-Box and local AI workstations

A local AI box with one or two GPUs, designed to run LLMs, creative tools, or AI workloads without relying only on the cloud.

Transparent pricing

Three labour packages, with a turnkey option

The package covers my work: part selection, assembly, configuration, testing, and support. If you want a turnkey build, components are added to the same invoice at cost.

Gaming Performance

$550

For a standard gaming PC: part selection, clean assembly, BIOS, Windows, drivers, testing, and optional installation.

AI-Box / Advanced Project

Starting at $950

For a local AI workstation, a one- or two-GPU build, watercooling, compact form factor, low-noise system, custom cables, or unusual configuration.

Typical budget ranges for a complete project

These ranges give a rough idea of the total for parts + labour before taxes, delivery, and availability changes.

Part tierTypical totalBest suited for
Budget$1,500 to $2,2001080p or light 1440p gaming, family use, or a simple compact workstation.
Mid-range$2,200 to $3,800Solid 1440p gaming, entry/mid-range 4K, a durable everyday machine, or a more comfortable workstation.
High-end$3,800 to $8,000+High-FPS 4K gaming, PCVR for virtual reality headsets, a one- or two-GPU AI-Box, watercooling, or multi-monitor trading with peripherals.

Included in every package

  • Needs and budget analysis
  • Compatible component list chosen with you
  • Complete assembly and tidy cable management
  • BIOS, XMP or EXPO, Windows, and drivers configured
  • Load testing before delivery
  • Home or business installation within the included service area

The difference

What you get beyond a prebuilt PC

Choices

Parts you understand

You know what you are buying and why it fits your real use case.

Tuning

A complete configuration

BIOS, memory, drivers, and thermal settings are not left untouched at factory defaults.

Validation

Real testing

The system runs under load before it leaves the workshop.

Follow-up

Human support

You speak with the person who chooses, builds, delivers, and supports your computer.

Simple and transparent

From idea to installation in four steps

  1. 1

    We clarify the need

    Games, software, number of monitors, total budget, and whether you prefer client-supplied parts or a turnkey build.

  2. 2

    You approve the configuration

    I provide a component list and a clear quote. A deposit is required before parts are ordered.

  3. 3

    I build and test

    Assembly, cabling, configuration, and load testing are completed in my workshop.

  4. 4

    We put the system into service

    Home or business installation if requested, first boot with you, then the support period begins.

Recent work

Real builds, not stock photos

These photos lean into RGB lighting, but the colours and style are fully adjustable: understated and professional, clean white, subtle blue, full RGB, or minimal lighting.

Who builds your computer

A personal service from first message to follow-up

My name is Mathieu. I like understanding what a computer will really be used for, choosing the right parts, and delivering a build I am proud of. I work on one project at a time, with the same care I would put into my own system.

One of my first complete projects was a multi-monitor trading workstation. From component selection to client-site installation, that project confirmed there was room for a more attentive service than buying a prebuilt machine from a big-box store.

FAQ

What to know before we start

Do I need to buy the parts myself?

No. I can prepare a turnkey project and provide a single invoice, with components at cost and labour clearly separated. You can also buy or reuse certain parts; I verify compatibility before the quote.

Do the price ranges include parts?

Yes, the ranges give a rough idea of the complete project with parts and labour. The exact amount depends on available components, monitors or peripherals to include, and applicable taxes.

How long does it take to receive my PC?

The timeline mostly depends on component availability and delivery. Once the configuration is approved and the deposit is paid, I give you a realistic assembly and installation date.

Can I request or reuse specific parts?

Yes. I include your preferences when the parts make sense for the rest of the build. If you already own certain components, I verify compatibility and condition before including them in the quote.

What happens if a part fails?

Components are covered by their manufacturer warranty. I guarantee my assembly work and help you with the claim process if a part fails.

What is the difference between Gaming, Trading, and AI-Box?

The Gaming package targets a ready-to-play system, from 1440p up to 4K depending on budget. The Trading package adds calibration and cabling for three to six displays. The AI-Box is a more specialized workstation for local LLMs or AI workloads with one or two GPUs.

Does an AI-Box cost more than a gaming PC?

Often yes, because case choice, power supply, cooling, and GPU planning become more critical. The final price depends mainly on GPU count, target VRAM, and the level of silence or stability required.

Do you install systems outside Montreal?

Yes, generally up to about one hour away. The first 20 km are included; beyond that, travel is $1/km round trip. For longer distances, I confirm the fee before the quote.

How do you test a trading workstation?

The Trading package includes extended system and multi-display testing. The goal is to catch issues in my workshop before installation, not during a market session.

Next step

Tell me about your project

Send me your use case, total budget, and, if you know them, the games, software, displays, or parts you want to use. I will reply with the next steps and a clear price.

Call 438-872-9070 Email mathieu@atelierpc.ca

Last updated: September 2, 2026 · By Mathieu, L'Atelier PC