SIV is an extremely comprehensive system information tool that tells you everything you could ever want to know about your PC.
To take an example, when you launch the program you'll see a button called Volumes, and so you might think this would lead to a screen that lists your PCs drives, their free space and so on.
What you actually get is much, much more. Like pointers to your various drive types, manufacturers, serial numbers and controllers. There's geometry data (the number of cylinders, tracks, sectors and more). Information on partition layouts. And live file system statistics, so you can see which drives are being accessed the most.
There are specific reports on your USB and SCSI drives. Low-level Windows data like volume GUID names. Real-time SMART drive monitoring, so for instance you can see the current temperature of any SMART-compatible drives. Oh, and of course if you just want to know the capacity and free space of your various drives, then that's available too.
SIV offers the same in-depth reports on other areas of your hardware - the CPU, RAM, GPU, system buses, and a whole lot more.
The program also provides detailed network information, and troubleshooting tools.
And the Windows section is something like a supercharged Task Manager, telling you all about drivers, services and running processes, memory use, paging, loaded DLLs, security privileges and more.
The program's interface is a little odd, and there's so much available here that it can take a while to pick out the data you need. But there are few better ways to explore the technicalities of your PC, and others you might encounter, especially as SIV is portable and supports every version of Windows from 95 upwards (the server editions, too).
What's new in 5.39 (for full changes, see the history)
Added Windows 10 19H1 Build 18362 + 20H1 Build 18875 support. Enabled operation of [ACPI Eval], etc..
Added Intel Xeon (Cascade Lake-AP/SP/D/W/X) + AMD Ryzen (Matisse) + (Renoir) support. Fixed AMD Summit Ridge codename.
Circumvent the Samsung NVMe 18.104.22.1681 driver bug when reading the Namespace information.
Enhanced Reset Positions to also reset each LCD Panel size. Added VCore (Max) to [Status] and also as a CPU-0 Configuration on LCD panels.
Renamed PSU to SIO and moved PSU from I/O to a new item. Added reporting of CLTT/TSOD reported DIMM temperatures.
Updated Overall in Tooltips to report the Maximum of the Current values rather than their Average.
Improved NVidia GTX 1660 support. Fixed L3 Unified Cache reporting when there is no CPU with an APIC of 0.0.0.
Reworked all Menu->File->Download-><item> to directly download from the mirror rather than using ReWrite rules in .htaccess.
Enhanced [CSMI RAID] to report ATAPI Device names and fixed [Drives] to report all the disk controller drives.
Added ControlledBy to [Link Devices] which can be used to select which devices SIV will report and/or control.
Correct to report VCCIN for X299 motherboards. Added ASUS Rampage VI Extreme Omega motherboard support.