The Dusty BIOS Update You Skipped Is Quietly Stealing Your FPS

Let's talk about the one upgrade that costs absolutely zero dollars and takes about as long as microwaving a frozen burrito. No, it's not reapplying thermal paste (though, seriously, when did you last do that?). It's your BIOS — that ancient-looking screen that flashes for half a second every time you boot up and that most PC builders treat like a haunted basement: acknowledged, avoided, and never spoken of at dinner.

Here's the uncomfortable truth: that firmware sitting on your motherboard right now was probably compiled months before your board shipped, tested for another few weeks, and loaded onto a chip that's been quietly falling behind ever since. Every major CPU launch, every new memory standard, every security vulnerability discovered since then — your motherboard manufacturer has been patching and tuning in the background. You just haven't been paying attention.

Time to peel back the price on some genuinely free performance.

What Even Is a BIOS Update, and Why Should You Care?

BIOS stands for Basic Input/Output System — or if your board is from the last decade or so, it's technically UEFI (Unified Extensible Firmware Interface), though everyone still calls it BIOS because old habits die hard. Think of it as the operating system that runs before your operating system. It initializes your hardware, handles communication between components, and sets the stage for everything else your PC does.

When manufacturers release BIOS updates, they're not just fixing obscure bugs that affect three people in Nebraska. They're often shipping:

• CPU microcode updates that improve instruction handling and squash security exploits like Spectre and Meltdown variants
• Memory compatibility patches that let your RAM actually run at the XMP/EXPO speeds you paid extra for
• Power delivery optimizations that can meaningfully affect how your CPU boosts under sustained workloads
• PCIe tuning tweaks that affect GPU communication bandwidth
• New CPU support — critical if you've dropped in a newer processor on an older board

In gaming terms, these aren't abstract improvements. Users on platforms like Reddit and hardware forums have documented FPS gains of 5–15% in CPU-bound titles after updating BIOS on boards running Intel 12th and 13th gen chips, particularly around the efficiency core scheduling fixes that rolled out through 2023. AMD Ryzen builds have seen similar stories — especially around AGESA updates that refined how Zen 3 and Zen 4 processors handle memory latency.

Your free performance is sitting there. Let's go get it.

Step One: Figure Out What You're Running Right Now

Before you update anything, you need to know your current BIOS version. Here's the easiest way:

1. Hit Windows key + R, type msinfo32, and press Enter.
2. In the System Information window, look for BIOS Version/Date in the right panel.
3. Write that down or screenshot it — you'll need it for comparison.

Alternatively, reboot your PC, mash the Delete key (or F2, depending on your board) to enter the BIOS, and the version number is usually displayed right on the main screen. It'll look something like F12 on a Gigabyte board, 1603 on ASUS, or a date-formatted string on MSI.

Step Two: Find Out What You're Missing

Head to your motherboard manufacturer's support page. Every major brand — ASUS, MSI, Gigabyte, ASRock — has a downloads section where you can search by your exact board model. Once you're there, pull up the BIOS update history and read the changelog for every version released after yours.

This part matters. Don't just grab the latest version and flash it blindly. Read what changed. If an update says "improved memory compatibility with DDR5-6000 kits" and you're running DDR4-3200, that specific fix isn't for you — but the security patches three versions later definitely are. Understanding the changelog tells you whether you're chasing a meaningful gain or just updating for the sake of it.

For most people who haven't updated in a year or more? You're chasing meaningful gains.

Step Three: The Flash — Less Scary Than It Sounds

Modern BIOS updates have gotten remarkably user-friendly. The old days of needing a bootable DOS USB drive and a prayer are largely behind us. Here's the typical process:

Download and prep: Grab the latest BIOS file from your manufacturer's official site (not some random mirror — please). Extract the zip file and copy the BIOS file to a FAT32-formatted USB drive. Keep it simple: just the BIOS file, root of the drive, no subfolders.

Use the built-in flasher: Most modern boards have a utility called something like EZ Flash (ASUS), M-Flash (MSI), or Q-Flash (Gigabyte) built right into the BIOS menu. Boot into your BIOS, find that utility, point it at your USB drive, and let it do its thing. The board will reboot a couple times — that's normal. Don't touch anything. Don't turn off your PC. Go make that burrito.

The nuclear option — BIOS Flashback: Some high-end boards (and even some mid-range ones) include a BIOS Flashback button on the rear I/O panel. This lets you flash a new BIOS without even having a CPU or RAM installed — incredibly useful if you're dropping in a new processor that isn't supported by your current firmware. Just load the file on a USB, rename it per the manual's instructions, plug it in, hold the button, and walk away.

One golden rule: Make sure your PC is plugged into a reliable power source. A power outage mid-flash is the one scenario that can actually cause problems. If you're on a desktop, you're fine. If you're somehow doing this on a laptop... read the room.

What to Expect After the Flash

Once you're back in Windows, a few things are worth checking:

• Re-enable XMP/EXPO in BIOS. Updates often reset this to default, which means your RAM is crawling at base JEDEC speeds. Go back in, find the XMP or EXPO toggle, enable it, save, and reboot.
• Recheck your fan curves. Same deal — custom fan profiles sometimes don't survive the update.
• Run a quick benchmark. Tools like Cinebench R23, 3DMark, or just booting up your most CPU-demanding game and checking average FPS will tell you whether the update moved the needle.

For CPU-bound games — think competitive shooters like CS2, Valorant, or Rainbow Six Siege — the improvements can be genuinely noticeable, especially on Intel systems that received scheduling and microcode updates. GPU-limited scenarios at 4K ultra settings? Less dramatic, but stability improvements are still worth having.

The Bottom Line

The PC hardware world loves selling you the next upgrade. New GPU, faster RAM, beefier cooler — there's always something to buy. But your BIOS update is the rare exception: a legitimate performance and stability improvement that costs nothing except fifteen minutes of your time and one reboot.

At BananaPC, we're all about peeling back the price on real performance. Sometimes that means finding the best deal on a GPU. Sometimes it means pointing out that the best deal is the one that's already sitting on your motherboard, waiting for you to stop ignoring it.

Go check your BIOS version. Right now. We'll wait.