10 Best Custom PC Builders in Singapore (2026)

Building a PC through a Singapore specialist means someone else picks compatible parts, assembles and tests the machine, and answers the phone when something misbehaves. This guide covers ten builders that publish a custom-build offer on their own websites, from Sim Lim Square counters to industrial-estate showrooms and delivery-first online teams. Entries are in no ranking order. Every detail below is attributed to what each business says about itself, so confirm current stock, quotes, warranty wording and opening hours directly before you commit. If you are new to custom builds, read the buying tips at the end, then message two or three shops with the same budget and use case and compare the written quotes.

Aftershock PC is a Singapore-based builder that describes itself as making custom gaming desktops, laptops and workstations to a customer's specification. Its site also lists ready-to-ship systems, creative and AI workstation configurations, plus server and NAS solutions for businesses. The company says an in-house team handles bespoke modding and themed designs, including licensed collaboration builds. It lists an experiential centre at B-Central near Bendemeer, which it describes as a service centre and collection point, and it mentions warranty coverage and technical support for its systems. The site was showing current-year sale promotions when checked. It suits buyers who want a larger, established brand with a showroom rather than a single-counter shop, and who may also want a themed or heavily styled rig.

Bendemeer
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Define PC says it has assembled custom gaming PCs, workstations and office desktops in Singapore since 2016. Its website describes each system as stress-tested and set up with Windows before handover, and states that builds carry a three-year warranty with ongoing support. Besides made-to-order configurations, the site lists ready-to-ship gaming PCs, enterprise and AI workstations, monthly instalment options through payment partners, and PC-building courses. It also mentions on-site service and repair. Define PC lists a showroom in the Ubi area, and says standard delivery takes a few days with self-collection available. Confirm warranty and instalment terms in writing. A sensible pick if you want a workstation or an office fleet as well as a gaming build.

Ubi
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Dreamcore is a Singapore custom PC company whose site says it builds gaming desktops, creator workstations, laptops and performance setups configured around a customer's needs, budget, looks and upgrade plans. Its published FAQ covers part selection, creator and professional use, future upgrades and after-sales support. The business lists a showroom called Dream Centre in the Kim Chuan area, open on weekdays with Saturday visits by appointment and closed on Sundays and public holidays, and it takes enquiries through WhatsApp. Dreamcore names Intel, AMD, NVIDIA, ASUS, MSI and Thermaltake among the hardware brands it works with, and the company has been covered by several Singapore media outlets. Confirm opening hours and book ahead if you plan to see builds in person.

Kim Chuan
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Mansa Computers is a Singapore custom PC builder that sells mostly through its website and WhatsApp rather than a walk-in shop. Its site says it has built gaming, streaming, editing and office machines since 2018, with new custom orders delivered within one to two days. It offers ready-to-ship configurations ordered before an afternoon cut-off, full custom builds in ITX, micro-ATX and ATX sizes, and rackmount server builds. The business states that builds carry a three-year warranty and that, in the first year, it will collect a faulty PC from home without a transport fee. It also advertises repairs and upgrades for PCs bought elsewhere. Good for buyers who prefer to discuss specs by chat and have the machine delivered. Check warranty wording before ordering.

Island-wide (online, delivered)
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Dynacore Technologies is a computer retailer and PC builder with a showroom on the fifth floor of Sim Lim Square. Its site says customers can bring a component wishlist or describe a budget and use, and the team will configure the system, with builds typically completed the same day. The shop lists brands including ASUS, MSI, Dell, Lenovo, HP, Acer, LG, Gigabyte and Samsung, says it is an authorised Intel partner, and states that products carry the manufacturer's Singapore warranty, with extended options available. It also mentions serving corporate buyers and bulk orders. The site says the business was established in 2016. It suits shoppers who like to see parts in person at the Bugis-side electronics mall and collect their finished PC on the spot.

Sim Lim Square, Bugis
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Vii PC calls itself a DIY PC specialist and runs a store at Sim Lim Square. Its website says it offers custom gaming PC builds, individual components and IT consultation, and that its staff are build experts who recommend setups to match a customer's budget and needs. The site was promoting current graphics card lines, including Nvidia RTX 50 series and AMD Radeon RX 9000 series, when checked, and lists weekly opening hours. Vii PC also sells through Lazada and Shopee as well as its own web store, and mentions free delivery. Warranty terms are not spelled out on the page that was reviewed, so ask for them in writing. A reasonable stop for parts and a build from one Sim Lim counter.

Sim Lim Square, Bugis
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Infinity Computer is a Sim Lim Square shop on level four whose site says it has operated since 1997. Its web pages list PC components, peripherals, monitors and software, and say it offers custom desktop builds optimised for a customer's budget. It also lists laptop SSD and memory upgrades, hardware diagnostics, virus removal and repair, and warranty and after-sales support for products bought from the shop. Contact is by phone, WhatsApp and email, and opening hours are published on the site. Because it combines parts retail with repair work, it can suit people who want an upgrade to an existing machine as much as a brand-new build. Ask what the build warranty covers before you pay a deposit.

Sim Lim Square, Bugis
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PCKAKi is a custom PC builder at Sim Lim Square that says it assembles personalised computers for gaming and professional use, and also handles corporate workstation orders. Its website highlights written quotes with a component list, short lead times, technical support and after-sales service, and shows ready-made configurations built around recent Intel and AMD processors and Nvidia graphics cards. Customer comments on the site praise assembly quality and responsiveness; these are the business's own selected testimonials. The shop lists weekday and Saturday hours and is closed on Sundays and public holidays. It may appeal to a buyer who wants a printed spec and price breakdown to compare against other Sim Lim quotes. Check stock and warranty terms directly, as several listings showed out of stock.

Sim Lim Square, Bugis
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Performance PC is a Sim Lim Square retailer that describes itself as a custom-build PC shop. Its website says it lists every component in a build and displays costs openly, that its builders cable-manage each system, and that desktops come with a three-year warranty covering parts and labour. The company has a presence across two units in the mall and publishes a phone contact and opening hours, with the shop closed on Sundays and public holidays. Its Facebook page was posting new build photos within the past few days when checked. It also mentions component upgrades and repairs. A practical choice if you want an itemised build sheet from a physical counter and plan to collect the machine yourself. Confirm the warranty scope in writing.

Sim Lim Square, Bugis
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ArmaggeddonPC is a Singapore gaming PC and hardware retailer that sells custom-built desktops, workstations, monitors and peripherals under its own brand. Its website lists current-generation Ryzen and RTX 50-series configurations, and says PCs include free delivery, with a same-day delivery option and a five-year limited warranty on PCs. The business publishes a showroom in the Kallang area with weekday and Saturday hours, closed on Sundays and public holidays, where customers can collect machines. Product pages frequently show sale pricing, so treat any discount as the retailer's own claim and compare the base specification across shops. Read the limited-warranty terms closely, since they define what is actually covered. It may suit buyers who prefer choosing from fixed gaming configurations with a showroom pickup option.

Kallang
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