The operating system had 128 megabytes of memory.

The operating system had 128 megabytes of memory.

An engineer named NTDEV conducted an experiment to run Windows 7 on extremely weak iron. The system requires a processor with a minimum frequency of 1 GHz, NTDEV started it on Pentium-S, slowed down to 5 MHz.

To make it more interesting, the amount of available memory has been reduced from the required 1 gigabyte to 128 megabytes. The system itself was run inside the 86Box emulator so it was easier to control the resources allocated to it.

Although the configuration was much lower than the system requirements of Windows 7, the operating system was still able to boot. It took 28 minutes to launch.

The system was extremely slow, but it supported multitasking. The researcher managed to run several applications in parallel, including Notepad.

Speaking to Tom’s Hardware, the researcher said that to reduce the CPU frequency to 5 MHz, he had to repair the 86Box’s sources. In addition, to boot on the ultra-weak CPU, the operating system had a large part of the systems disabled: only three services were working.

It also required disabling a significant portion of the interface and converting the OS to a state resembling the installation mode so it was possible to access the command line, saving some resources.

The Windows 7 experiment is not the only unusual experiment NTDEV has conducted. For example, the researcher ran Windows XP on a CPU with a frequency of 1 MHz: the operating system, recalls NTDEV, was loaded for three hours.