First, work out what each seller is
Two names can surface in the same gaming PC search and still sit on opposite sides of the counter. CORSAIR's listed product range is gaming headset, gaming keyboard and gaming mouse, so its catalogue is built around the gear that sits around a machine rather than the machine itself. Scan's range is laptop, gaming laptop and desktop, which puts complete systems, laptops and small boxes at the centre. Settle which side of the counter you are on before comparing a single specification, because a keyboard listing and a desktop listing are not like for like. Both brands do offer build to order, so a published specification is a starting point rather than a fixed promise.
Read entry prices in context
The easiest number to quote is the easiest to misread. CORSAIR's entry price of €39.99 is taken from its headset range, and Scan's £48.98 comes from its monitor range, so neither one is the price of a gaming PC. Use them only as the floor of each catalogue. For whole machines, the entry prices across the listings in this comparison span €103.43 to €1,928.44. Each brand quotes its own floor in its own currency, so the honest comparison is that wider span rather than the two entry figures set side by side.
Graphics, memory and the operating system
Graphics options separate these two more sharply than price does. CORSAIR's gaming computer listings name nvidia and amd for the cards its builds are configured around, and they run Windows. Scan's configured systems name nvidia, amd and intel and run Windows and Linux, which widens the field at both ends: an extra graphics option to weigh, and a second operating system if you build your own setups on it.
Memory is the other side of a gaming specification, and it is where quietly different machines diverge. CORSAIR's listings reach 96 GB of installed memory. If you plan to upgrade a machine yourself, ask what the board supports and how many slots stay free, because the figure on a configurator is often the shipped amount rather than the ceiling.
Warranty and returns, side by side
Warranty length is the cleanest reliability signal in the comparison, and it varies more than most shoppers expect. Across the listings here, warranty runs 1 to 3 years. CORSAIR offers 2 years under its limited warranty terms, and Scan's systems carry 3 years with an extended warranty option on top. Returns point the other way: CORSAIR allows 60 days under its shipping and returns policy, Scan 14 days. A longer warranty and a longer returns window are not the same promise, so hold both numbers separately when you decide.
Where the seller is and how to reach it
Geography decides how much of the comparison applies to you. CORSAIR is headquartered in US and trades as Corsair Memory, Inc., and its shipping and returns policy covers GB and US. Scan is registered in GB as Scan Computers International Ltd and lists GB, so its configured systems are aimed squarely at UK buyers. Support is the next filter: CORSAIR runs chat, phone and help centre, while Scan runs email, chat and phone, adding email and leaving out the community board. Scan also offers click and collect, which matters when you want hardware in hand quickly. Both have a long trading record, CORSAIR since 1994 and Scan since 1986.
Platforms, screens and the questions left open
Neither seller is limited to PC gaming. Both list pc, playstation and xbox and pc, playstation and xbox as platforms, so a console or handheld habit does not rule either out. Displays are where Scan adds something a PC comparison often misses: its monitor range uses ips, va and oled panels and reaches 720 Hz, and a faster panel can matter more than a faster card in competitive play.
The figures to ask about next are the ones neither range states outright: processor models, storage sizes, and the frame rates a machine is expected to hold at your resolution. CORSAIR's headline specifications belong to a headset rather than a desktop, and its noise cancelling is not offered, so those details say nothing about a machine you would sit at for hours. Ask for processor, storage and expected frame rate in writing, and compare like with like.
Turning the comparison into a shortlist
Keep four numbers in view while you browse: entry price against the market span above, the graphics options nvidia and amd or nvidia, amd and intel, warranty length, and the returns window. Sort the Gaming PCs rankings on those four, then read the CORSAIR review and the Scan review to see which side of the counter fits the machine you actually want. If your shortlist includes compact systems, the Minisforum review and the Gmktec review cover that end, and an integrator such as CyberPowerPC sits between a component maker and a retailer.