I'm trying to revive my old Lenovo laptop with some Linux love, specifically by installing Arch. Here are the specs: AMD A4-5000 CPU (4 cores at 1.50 GHz), 4 GB of DDR3 RAM, and a 500 GB HDD. It's currently running on Windows 7 (32-bit) but I'm looking to switch that up without spending any money, so no SSD suggestions, please! I'm a fan of KDE Plasma's aesthetics—I've tried it on SteamOS—but I'm concerned that it might lag compared to my current setup due to my outdated hardware. If KDE can be optimized to run smoothly without feeling sluggish, I'd prefer to go with that. However, if it's going to be noticeably slower than XFCE, I might have to reconsider. Also, if there are any lightweight distros that would handle this hardware well, I'd love to hear about them!
4 Answers
Honestly, if you're sticking with an HDD, XFCE is probably your best bet. KDE can be pretty demanding, and while you can tweak it to lighten the load, it usually ends up sacrificing a lot of the features that make it appealing. Plus, your specs aren't exactly robust, so smoother performance is key.
KDE is nice, but you'll hit a wall with performance on 4GB RAM. I run Fedora KDE, and I've seen it use almost all my RAM with just a few tabs open. XFCE is definitely lighter on resources—around 800MB for browsing, whereas KDE might chew up 1200MB. If you're looking for something even lighter, try using LXQt instead, which can run well on minimal resources.
Yeah, I've found that with a properly set up XFCE, you might only use about 450-500MB when idle. It's efficient and keeps your options open!
It's all about how much you want to tinker. If you're okay with some setup work, you could go with different distros that come pre-configured to be lightweight. AntiX Linux or LocOS with LXDE are worth checking out if you're looking for out-of-the-box simplicity without the weight.
I recommend going with Mint XFCE. It's user-friendly and will give you a pretty decent experience without all the fuss. Plus, you're less likely to run into major hiccups compared to Arch, especially if this is your first time with Linux.

You could get a cheap SSD for about $45, which would really help performance. Just a thought!