Two Abandoned PCs Found on the Roadside — One Packed an i9-9900K and Unencrypted Personal Data

A Midnight Walk That Sparked a Salvage Project

This Linus Tech Tips episode opens with a surprisingly dramatic premise: Linus and Yvonne were out for a late-night walk when they stumbled upon two abandoned PCs sitting on someone's lawn. Coated in dust and damp from exposure, they looked like hopeless cases. But as the team's previous "Coke-soaked PC" episode demonstrated, getting wet doesn't necessarily mean a computer is dead — it just needs a thorough cleaning and proper diagnosis.

The team set a hard rule for themselves: within 90 minutes, assemble at least one fully working PC from the salvaged parts. Any component that couldn't be fixed within the time limit would be swapped out for a new one. The final goal was to give away the finished build at a live event. This "salvage-and-donate" format gave the whole thing both technical depth and a reality-show pace.

Teardown: Surprisingly Good Hardware Hiding in the Trash

What they found inside was genuinely unexpected. One machine housed an Intel Core i5-9600K — not the newest gaming chip, but LTT's recent benchmarks pairing a 1080 Ti with an even older 8700K showed that platforms like this can still game competently with a decent GPU. The other machine was even more surprising: an i9-9900K — prompting the team to remark that finding one for free on the side of the road was borderline absurd, given that these chips still fetch $50–$75 on the used market.

The second machine ran a more obscure chip: the i5-6402P, a quad-core, quad-thread Skylake OEM part with no Hyper-Threading, pulled from a CyberPower prebuilt. Both systems were DDR4 platforms, meaning whatever RAM remained in the original machines — even first-gen DDR4 at 2133MHz — could potentially be reused.

The cable management and the fact that only four motherboard screws were fastened led the team to suspect the CyberPower unit had been user-modified at some point. Which raised a natural question: why would someone throw away a working 9900K system? The most plausible theory — someone stripped out the RAM and GPU and left the rest on the curb.

The i5-6402P is an Intel sixth-generation (Skylake) chip sold exclusively to OEM system builders and never available at retail. Its key limitation is disabled Hyper-Threading, leaving it at 4 cores and 4 threads with conservative clock speeds — making it a budget-tier option even within its generation. OEM-exclusive CPUs are typically preinstalled in branded systems to reduce costs, rarely circulate on the second-hand market, and offer limited flexibility for upgrades or repairs. DDR4 backward compatibility was the critical factor that allowed parts to be shared between the two builds — both the i5-9600K and i9-9900K are ninth-generation Coffee Lake Refresh chips using the LGA 1151 socket with DDR4 support, meaning their memory modules are theoretically interchangeable, which simplified the parts-pooling process considerably.

The Repair: Only One Component Was Actually Dead

The real technical highlight came during power-on testing. Surprisingly, the salvaged systems came to life almost immediately — fans spinning, LEDs lit, no error codes, and one machine even booted straight into the Windows automatic repair screen. After investigation, the team found that one system's only issue was a loose 8-pin power connector with two pins not making proper contact.

The only component that was genuinely dead was a 4GB graphics card. Looking at upgrade options, the team found that the original 600W PSU couldn't support the recommended 750W requirement of a Radeon RX 9070 XT, so they swapped in a new power supply as well. They also added a Noctua cooler, ASRock Taichi motherboard accessories, and upgraded RAM to 32GB to comfortably meet Windows 11's requirements (Microsoft's official minimum is 4GB; recommended is 16GB).

A few real-world build headaches emerged along the way: the new motherboard had only two fan headers, requiring a four-way splitter to connect all the fans; the replacement PSU lacked a 12V-2×6 cable and needed an adapter; and the optical drive required new SATA routing and cable management. These small details are exactly what makes salvage-build videos feel authentic.

The Radeon RX 9070 XT mentioned in the video is AMD's new consumer GPU based on the RDNA 4 architecture, officially requiring at least a 750W power supply. The original 600W unit in the build wasn't sufficient, which prompted the PSU swap. The 12V-2×6 connector (also known as the PCIe 5.0 power connector) is a newer standard introduced for high-end GPUs capable of delivering up to 600W through a single plug — it's not compatible with legacy 8-pin connectors. While adapters can bridge the gap temporarily, they carry real risks of overheating or even fire under heavy load, which is why the PC building community strongly recommends native connector support over adapters. Noctua is an Austrian cooling brand known for its signature brown-and-beige color scheme and near-silent operation. Its flagship tower coolers consistently rank among the quietest consumer-grade options available and are widely regarded by the DIY community as a "buy once, buy right" choice.

Data Security: A Real Privacy Warning from Roadside Hard Drives

The most sobering technical moment in the entire episode involved the two hard drives left inside the machines. One was a 500GB Samsung 860 EVO SSD; the other was a 1TB mechanical hard drive manufactured roughly a decade ago. Both contained Windows installations. Neither had full-disk encryption enabled.

Linus used this as an opportunity to drive home a critical point: full-disk encryption matters enormously. Without cracking any passwords or doing anything special, the team could freely browse the files on both drives. The video deliberately avoided actually looking through private content, instead using the demonstration to show just how easily a stranger can read an unencrypted drive. Both drives showed a username of "Ryan" — the team half-jokingly speculated it might be the same person — and the moment sparked a broader conversation about a real problem: many people genuinely don't understand the value of their data. In IT work, it's common to encounter users who refuse data-wiping services because they assume a broken computer means the data is already gone.

This segment serves as a genuine wake-up call for everyday users: before disposing of old hardware, wiping or encrypting your storage isn't optional. A drive left in a curbside PC or sold in a second-hand market can become a direct source of privacy exposure.

Full Disk Encryption (FDE) works by automatically encrypting data as it's written to storage and requiring a decryption key to read it back. Windows BitLocker, macOS FileVault, and Linux's LUKS are the most common implementations. Without encryption, plugging a drive into any other computer allows the operating system to mount the file system and browse its contents directly — no login password required. The Samsung 860 EVO supports hardware-level encryption via the TCG Opal standard, but this feature is disabled by default and must be explicitly enabled, typically in conjunction with BitLocker. For devices being retired, Secure Erase tools offer another reliable method of permanently destroying data — standard formatting or file deletion does not actually remove recoverable data from the drive.

Both Machines Revived, Handed Off to a Lucky Attendee

After cleaning and upgrading, both systems booted successfully. The primary build — now sporting an RX 9070 XT, 32GB of RAM, and a Noctua cooler — emerged as a quiet, high-performance machine that looked almost new. The second system with the i5-6402P was earmarked as a "free CPU starter kit for a file server," with 8GB of RAM making it a capable NAS foundation.

The finished build was brought to the Whale Land event, placed near the restrooms with a bowl of candy to draw in passersby — a "from the curb, back to the curb" moment. A lucky attendee named Felix walked away with the machine, taking home what had been a lawn ornament just days before.

The Practical Takeaways

Stripped of its entertainment packaging, this episode offers a few genuinely useful data points for DIY builders: abandoned hardware isn't necessarily dead — loose power connectors and failed GPUs are fixable problems; DDR4 platforms like the 9600K and 9900K paired with a modern GPU still offer solid value as gaming rigs or NAS builds; and most critically — when it comes to retiring old storage, encryption and secure erasure aren't optional extras. They're the baseline.