关于Mid 2012款13英寸MacBook Air卡顿与Geekbench 4跑分偏低的求助

Hey there, let’s work through these annoying issues with your Mid 2012 MacBook Air—those crippling slowdowns and the unrecognized battery sound like a real hassle, and that Geekbench score being a third of the official value is a huge red flag. Let’s break this down step by step:

1. Fix the Unrecognized Battery First (It’s Probably Dragging Performance Down) #

MacBooks rely on the battery to maintain stable power delivery, and if the system can’t detect the battery, it often drops into a low-power mode that throttles the CPU heavily—this is almost certainly a big reason your Geekbench score is so low. Here’s what to do:

• Reset the SMC (System Management Controller)：This controls power-related functions, so it’s the first stop for battery/performance issues tied to power.
  1. Shut down your Mac, keep the power adapter plugged in.
  2. Hold down Shift + Control + Option plus the power button for 7 seconds, then release all keys and press the power button to turn it back on.
• If the battery still isn’t detected after resetting the SMC, double-check the battery installation (maybe it’s loose from the last replacement) or reach out to the seller of your Newer Tech battery for support—even new third-party batteries can have compatibility or quality issues.

2. Tackle the Performance Slowdowns #

Once the battery issue is sorted, let’s address the general lag:

• Check for CPU-hogging processes: Open Activity Monitor (find it in Launchpad > Other), switch to the CPU tab, and look for any processes using 50%+ CPU consistently. A rogue process could be dragging everything down.
• Reset NVRAM/PRAM: This stores system settings that can sometimes cause performance glitches.
  1. Shut down your Mac, then turn it on and immediately hold Command + Option + P + R until you hear the second startup chime, then release the keys.
• Free up SSD space: Mid 2012 MacBook Airs use SSDs, and if you’re running below 10% free space, the drive can’t operate efficiently, leading to slowdowns. Go to Apple menu > About This Mac > Storage to check, then clear out old backups, unused apps, or large media files.
• Check your macOS version: The Mid 2012 model supports up to macOS Monterey. If you’re running an older version, updating to the latest supported stable release might fix performance bugs. If you’re already on Monterey, consider a clean reinstall (make sure to back up your data first!) to eliminate any corrupted system files.

3. Re-Test Geekbench for Accurate Results #

Before you panic about the low score, make sure the test was fair:

• Even with Safari and iTunes closed, Dropbox and pcloud might be syncing files in the background, which uses CPU and memory. Quit both completely, wait a minute, then run Geekbench 4 again.
• If the score is still way below expected after fixing the battery and trying the steps above, it might indicate a hardware issue with the CPU or motherboard power circuitry. At that point, you’ll want to take it to a trusted repair tech for a deeper diagnostic.

内容的提问来源于stack exchange，提问作者Dmitry Kabanov