Did a 140GB PS3 Model Ever Exist?

No. Sony never manufactured a PlayStation 3 with a 140 GB hard drive from the factory.

Official PS3 Hard Drive Configurations

Why You Might See "140GB"

1. User Upgrade: The PS3 uses standard 2.5" SATA laptop drives. A previous owner likely swapped the original drive for a 160 GB, 250 GB, or 500 GB drive. Windows/Partition tools sometimes report "140 GB" for a 160 GB drive after formatting overhead (160 GB decimal ≈ 149 GiB; a 140 GB partition suggests manual partitioning or a cloned image).
2. Misreading: 120 GB + 20 GB (misinterpreted)? 160 GB mislabeled?
3. Scam/Mod: Sellers sometimes clone a smaller drive image onto a larger drive, leaving unallocated space, or hack the firmware to report false capacity.

How to Verify

Go to Settings → System Settings → System Information. It shows "Free Space" and "Total Space." If Total Space reads ~140 GB (or ~149 GiB), it's a 160 GB drive. If it reads ~111 GiB, it's a 120 GB drive.

Buying Tip: Any PS3 can accept up to 2 TB (tested community limit) 2.5" SATA drives (9.5mm height). A "140GB" listing just means a used console with an aftermarket drive — price it as a standard used unit + cost of that drive (~$15–25).