The pace of technological progress and changing trends often leave once-beloved PC parts lost to time. Once-indispensable components gradually become optional, then obsolete, as most PC builders quickly move on to the next cool thing. This might make you think of hard drives, 4-core CPUs, non-modular PSUs, and even 10-year-old graphics cards, but in reality, many of these components are far from obsolete.

It might even make sense to buy them in 2025, depending on your use case. They're still alive and kicking in existing PCs, allowing countless gamers to enjoy even the latest games, albeit with optimized settings. And it's not even a matter of extracting more life out of these components than intended by manufacturers. Not everyone needs the latest and greatest hardware to be able to enjoy games.

7 HDDs for secondary storage

Spinning drives still have some perks

While some brave men are still trudging along with a hard drive as their primary storage, the arguments in favor of SSDs are airtight. The difference isn't just a good-to-have anymore, it's all but necessary. Using hard drives as secondary storage, however, isn't getting old anytime soon. Your less-frequented data like old photos and videos, media files, and backups are perfect for slower hard drives.

Creative professionals may prefer hard drives for archival storage — parking large files for months or even years on end in cold storage. Using SSDs for this purpose can threaten data integrity as flash storage can develop complications when deprived of power for long periods. Hard drives don't suffer from this issue, plus the cost per GB of larger-capacity HDDs still beats that of SSDs (even SATA variants) hands down.

Perhaps the biggest proof that HDDs aren't obsolete yet is the fact that millions of HTPCs, home and office PCs, media servers, NAS devices, and student PCs are still running on hard drives without missing out on much. Not every PC needs fast storage, after all.

6 SATA SSDs

Faster NVMe drives don't matter much

The price of a SATA SSD is virtually the same as a modern Gen4 NVMe drive, so buying a new SATA drive doesn't make sense as long as you have a spare PCIe M.2 slot on your motherboard. However, the SATA SSDs already in use on millions of computers aren't exactly ancient. First, SSD speeds don't matter for gaming — any SSD is good enough for gaming. DirectStorage hasn't picked up yet, so a blazing-fast NVMe drive will give you the same loading times as a SATA SSD.

Second, most users will not be able to tell the difference between a SATA and NVMe SSD in other areas either — Windows boot time, launching programs, navigating the PC, etc. Both SATA and NVMe drives use the same flash storage underneath; it's the communication protocol that determines the vast difference in the read/write speeds. Hence, the move from HDDs to SATA SSDs is huge, but not so much when jumping from SATA to NVMe SSDs.

5 Cases without see-through side panels

They're kind of making a comeback

Pick up any PC case these days, and chances are it'll have a tempered glass side panel, allowing a full view of the components you'll put inside it. However, this wasn't always the case; side panels used to be opaque and unremarkable in the pre-2000s era. The majority of modern cases have adopted the see-through aesthetic, but you can still find the older design language in some newer models.

The Fractal Design North, for instance, has a barely see-through side panel and chooses natural materials and a minimalist aesthetic instead. Many mini-ITX cases have dropped fully transparent side panels in favor of grilled designs that offer a combination of the two design choices. The HYTE Revolt 3, NZXT H1 V2, and Fractal Design Terra are prime examples. Even the cases now considered ancient are running just fine, and some users prefer the "no-look" aesthetic.

4 Non-modular PSUs

Modulate your expectations

Modular PSUs might have become popular as far back as the late 2000s, but they are by no means the only viable options today. Non-modular PSUs still dominate the 500W-600W listings, and for most users looking for a decent and affordable power supply, they're perfectly fine. They might not look as good inside your PC, but not everyone values cable management as much as others.

The Seasonic PSU I chose for my 2017 build was a non-modular, Bronze-rated unit that looked horrible inside my case with no PSU shroud. I was saving every penny at that time, and that's the situation many PC builders find themselves in. Non-modular PSUs serve pretty much all the functions a quality power supply should, provided they're reliable units in the first place. Millions of PCs still use them, and countless others are still buying them.

3 Cheap and compact air coolers

Budget cooling FTW

Modern CPUs might have made 360mm AIOs the only thing on the minds of PC builders, but unassuming air coolers that cost less than half and perform equally well are thriving. I'm not talking about beefy dual-tower air coolers or the overkill ones from Noctua; they're more than capable of cooling high-end chips, but even the most compact coolers have a huge market.

Replacing the stock cooler on your Intel or AMD CPU with an inexpensive but effective air cooler becomes a no-brainer when you look at the performance and noise benefits. The many avatars of the Cooler Master Hyper 212 and the vastly popular single-tower options from Thermalright and ID-COOLING are still doing extremely well for themselves. Air coolers aren't obsolete by any standard, but even the cheapest of them are far from done.

2 Quad-core CPUs

Quality over quantity

4-core CPUs could seem dated in 2025, but I'm not talking about 6th Gen Core i3 or i5 processors. If you're rocking, say, a Ryzen 3 3300X or Core i3-10100F, you can still enjoy fantastic 1080p gaming in many recent titles with a GPU like the RTX 3060. Modern quad-core processors are way faster than what we used to see before and are perfectly serviceable for gaming and day-to-day usage.

Sure, 6 or 8 cores will give you the best results in the latest titles, and certainly better 1% low FPS, but most people are okay with running their aging quad-core chips for a few more years. You can always upgrade to a 6-core chip, but you don't need to. As long as you're using a slightly older or budget GPU, your 4-core CPU won't be much of a bottleneck. When you eventually upgrade your graphics card, you could consider a full system upgrade to a modern 6-core or 8-core CPU.

1 Non-RT graphics cards

Yes, that's a thing

There was a time, not too long ago when all of us used a GeForce GTX 10, Radeon RX 500, or Radeon RX 5000 series graphics card. Real-time ray tracing wasn't a thing yet, and RTX graphics cards were still in the future. I remember ordering the GTX 1050 Ti for my 2017 build and enjoying 1080p gaming for two years before upgrading to the GTX 1660 Ti. The latter even allowed me to game at 1440p for around 3 years, after which I won an RTX 3080 gaming PC in a competition.

GPUs from Nvidia's GTX 10 series or AMD's RX 500 series are still alive on many gamers' systems, and the best ones, such as the GTX 1080 Ti, are faster than some RTX 30 series GPUs. GPUs become obsolete only when they become incapable of generating enough FPS at your desired resolution. If you're still getting a great experience in modern titles with optimized settings, no one should tell you that your GPU is too old.

Old is gold?

Technology might be progressing rapidly, but in the world of PC hardware, obsolescence is often overhyped. You can keep enjoying your decade-old hardware without feeling FOMO, as long as you're getting the performance you want. If you want to upgrade to a higher tier experience, then go ahead and upgrade, by all means. However, the decision should be yours, not born out of peer pressure. Plus, many of the components I discussed above will be right at home even in brand-new builds, so considering them ancient is a choice.