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WhySoSlow 1.61

Analyse your PC for performance problems

Operating Systems:
Windows 10, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8
Free, for personal-use only
Resplendence Software Projects Sp.
Software Cost:
System & Desktop Tools
Date Updated:
22 October 2020
Downloads To Date:
Download Size:
2.41 MB

WhySoSlow is a smart tool which runs various low-level scans on your PC to try and determine any performance issues.

The program opens with a "Status" panel which acts as a monitor for your CPU speed, temperature, load, RAM usage, hard page faults, kernel and app responsiveness.

Click Analyze > Analyze and these performance indicators (and others) are assessed, and verdicts delivered on your CPU speed, temperature and load, memory load, hard page faults, application responsiveness, latencies, BIOS interrupt delays and more.

WhySoSlow also includes an "Alarm" which can display a warning if your CPU temperature gets too high.

A commercial Pro edition adds a more detailed report, extra settings, additional alarms, and more.


WhySoSlow's system analysis delivers some interesting figures, but we're not sure how useful they're going to be. It told us that our system's hard page fault rate ranged from 0 to 58.1 per second, for instance, and said this was "excellent". Great, but is that really true? How is the program evaluating it? Would you know what was a good or bad figure for your system, or what to do about it?

Your Comments & Opinion

Crashes immediately
24 December 2015 18:58, Martin Ouseley
Exception EAccessViolation in module WhySoSlow.exe at 00622498.
Access Violation at address 00662498 in module 'WhySoSlow.exe Read
of address 000003C4.
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