i5 2500 Strange boost near 4ghz

[Randarr]

So I'm working on a MAME (and others) emulator machine that will sit in a stand up cabinet for my dad, picked up some cheap older parts for it and I noticed something that seems strange to me, that processor speed is out of spec by almost 300mhz. This is an H61 board with an i5 2500 non-K (SR00T) with, I can assure you, no adjustments to bclk. I'm not disturbed by this behavior as more performance is always welcome, even for an arcade machine, but I wonder why I'm seeing it boost near 4ghz. After all this is a locked chip that is SUPPOSED to have a base speed of 3.3 with a max turbo of 3.7. I've never seen an intel chip go beyond its rated boost speed without some kind of additional prompting, IE an overclock, which is distinctly not supposed to be possible here. Has anyone seen this before, or have I come across something interesting?

[RadiatingLight]

Weird.

If it works fine, then I guess don't touch it?

[RadiatingLight]

Weird.

If it works fine, then I guess don't touch it?

[Lord Nicoll]

47 minutes ago, Randarr said:

snip

Download something like CPUz, it'll have lots of the CPU info, including stepping and bus clocks, multi's ect

 

[Mister Woof]

Windows told me once my 8700k was at 6ghz

 

I wouldn't lose sleep over it

[Randarr]

22 minutes ago, Lord Nicoll said:

Download something like CPUz, it'll have lots of the CPU info, including stepping and bus clocks, multi's ect

 

Good call didn't think to do it at first but CPUz reported clock at ~3.6 I watched it bob for a while and windows seemed to report, and I'm going to try to explain this as best I can, a delta from the boost clock rather than the base, i.e. if CPUz reported 3.6 windows reported 4.0, if CPUz reported 3.3 windows said 3.7, and if CPUz reported 3.0 windows reported 3.4 etc.

Still interesting and makes me wonder how exactly windows gets its clock readings, but not nearly as cool as having a locked chip run out of spec

[Mister Woof]

17 minutes ago, Randarr said:

Good call didn't think to do it at first but CPUz reported clock at ~3.6 I watched it bob for a while and windows seemed to report, and I'm going to try to explain this as best I can, a delta from the boost clock rather than the base, i.e. if CPUz reported 3.6 windows reported 4.0, if CPUz reported 3.3 windows said 3.7, and if CPUz reported 3.0 windows reported 3.4 etc.

Still interesting and makes me wonder how exactly windows gets its clock readings, but not nearly as cool as having a locked chip run out of spec

windows task manager is just straight up wrong.

 

right now my cpu is running at 5ghz per hwinfo64/cpuz/xtu, and windows thinks its anywhere between 4.2 to 4.7ghz