PC Building Simulator Tips - Career, Builds, and Free Build

PC Building Simulator, developed by Claudiu Kiss and The Irregular Corporation and published by The Irregular Corporation, is a repair-shop and PC-building simulation about diagnosing, fixing, upgrading, and assembling computers. This guide covers the original PC Building Simulator, not PC Building Simulator 2.

The main advice below is for the base Career, Free Build, and How to Build a PC tutorial systems. The Esports Expansion, IT Expansion, and paid workshop DLC add their own jobs, spaces, or progression layers, so treat them as separate content once you understand the core shop loop.

Essential Tips

1. Build Your Career Around the Inbox

Career mode runs through customer jobs, so your Inbox is the shop’s real command center. Read every request before accepting it. A simple virus-removal or part-upgrade job is very different from a full build with performance, budget, or overclocking requirements.

Do not accept work just because it pays well. Look at the deadline, the customer’s requirements, and the parts you can actually access. Accepted jobs that sit unfinished can cost you time, money, and rating, especially once timed jobs become more common.

2. Check the Problem Before Buying Parts

Many new players spend first and diagnose second. Reverse that habit. When a customer’s PC arrives, inspect the job request, identify the task type, and use the relevant software or physical checks before ordering parts.

For virus jobs, the solution is not the same as a broken component repair. For performance jobs, the required outcome may depend on benchmark score, game requirements, or overclocking. A careful diagnosis keeps you from buying a new component when the job really needed cleaning, software, or a targeted upgrade.

3. Treat Shipping as a Strategy Layer

Parts do not simply appear for free in Career. New parts can be ordered with different delivery speeds, and slower delivery costs less. Same-day delivery can rescue a deadline, but it also eats profit. If several jobs need parts soon, batch your orders around the calendar instead of paying emergency shipping on every single item.

Used parts can be useful later, but they are not instant. If a job has a strict deadline, do not build your whole plan around a slow used-part delivery unless the calendar gives you room. Profit in Career comes from fixing the PC and managing the business around it.

4. Keep Cash Free for Real Job Needs

It is tempting to spend every payout on your own workstation, a flashy build, or a big upgrade. In Career, cash is also operating capital. You need enough money to buy customer parts, pay for shipping, and handle several jobs at once.

Before making a vanity purchase, ask whether it helps the shop complete work faster or meet a requirement. Extra workbenches, useful software, storage, and tool upgrades can improve throughput. Random expensive parts can leave you unable to finish a paying job.

5. Use Benchmarks and Apps as Work Tools

PC Building Simulator is not only about fitting parts into a case. Software matters. System information, compatibility checks, OCCT, GPU tuning, and 3DMark-style benchmarking all support different kinds of work.

When a job asks for a performance target, do not guess from part names alone. Build, test, and adjust. When a job points toward overclocking or a game requirement, use the available tools to confirm the result before sending the machine back.

6. Upgrade Workflow Before Chasing Flash

Tool upgrades are boring until you realize how many repeated actions they save. Faster screws, cables, standoffs, and installation steps reduce friction across every future repair. Extra benches and storage also make a busy workshop easier to manage.

Prioritize upgrades that save time repeatedly. A faster workflow helps every job after you buy it, while one unnecessary high-end part only helps if it actually fits the current requirement.

7. Respect the Build Order

The game simplifies PC building, but it still rewards method. Finish the physical build cleanly before treating the job as complete. Install the needed components, remember basics such as thermal paste when the build calls for it, connect cables, install an operating system when required, and run the software checks tied to the job.

If a PC will not boot or pass testing, slow down and inspect the fundamentals. Missing cables, incomplete installation steps, wrong parts, skipped paste, or unfinished software work are easier to fix when you follow a consistent checklist.

8. Use the Tutorial Before Career Gets Busy

How to Build a PC exists for a reason. If you are new to the parts, run the tutorial before your Career shop fills with deadlines. It teaches assembly order and the role of components without the same pressure as customer work.

That practice pays off quickly. Once you know the difference between a physical install step, a diagnostic app, and a benchmark requirement, Career jobs become business puzzles instead of random trial and error.

9. Make Free Build Your Testing Lab

Free Build is not Career with free money. It is a sandbox. You get broad access to components, tools, upgrades, peripherals, and performance apps, but you do not have the Career economy, Inbox jobs, or selling loop.

Use it to learn layouts, test part combinations, practice clean assembly, and understand how benchmarking or tuning behaves without risking your shop budget. Then bring those lessons back to Career, where deadlines and cash matter.

10. Keep DLC Systems in Their Own Mental Box

The Esports Expansion changes the rhythm with team support, sponsor and player requests, budgets, match-day setup, and reputation. The IT Expansion adds its own story content, on-site jobs, tablet use, and additional workshop structure. Paid workshop DLC can also change the space you work in.

Those additions are worth exploring, but they should not confuse your first Career plan. Learn the base loop first: accept sensible jobs, diagnose accurately, order parts on time, test the result, and grow the workshop.

Common Mistakes to Avoid

1. Accepting every Inbox job immediately - A player who grabs every request can overload the calendar before checking deadlines, requirements, or parts access.

2. Buying parts before diagnosing the PC - A player who shops first often wastes money on components that do not solve the customer’s actual problem.

3. Using same-day shipping for routine work - A player who pays rush fees too often turns profitable jobs into thin-margin repairs.

4. Spending all cash on personal builds - A player who empties the bank can get stuck without enough money for customer parts or useful shop upgrades.

5. Ignoring diagnostic and benchmark apps - A player who guesses at performance jobs can return a PC before confirming that it meets the requirement.

6. Skipping basic assembly checks - A player who rushes past cables, paste, operating-system installs, or software scans creates avoidable failed jobs.

7. Treating Free Build like Career progression - A player who expects Free Build to generate jobs, sales, or shop income misunderstands its sandbox purpose.

8. Mixing DLC goals into the first Career route - A player who jumps between base Career, Esports, IT Expansion, and workshop DLC too early can lose track of which systems belong to which mode.

Summary

Category	Top Tip
Career	Read job requirements and deadlines before accepting work
Diagnosis	Inspect the PC and task type before ordering parts
Shipping	Batch orders and save rush delivery for real emergencies
Money	Keep enough cash available for customer jobs
Software	Use diagnostics, tuning tools, and benchmarks to confirm results
Upgrades	Buy workflow improvements that help every future job
Building	Follow a repeatable checklist before sending PCs back
Practice	Use the tutorial and Free Build to learn without pressure
DLC Scope	Learn base Career first, then explore Esports and IT content