QIC0 frequency

[CHips]

Every resource says that QIC0 is 1.26 GHz, but I tested one and it looks like it is only a 1.2 GHz part...
Where does the 1.26 GHz info come?
Is the database wrong? Or does this processor need some special motherboard to be recognized as 1.26 GHz and work with 9.5 multiplier?

[crazybubba64]

Was the previous processor in the machine you ran it in a 1.2GHz part?

Sometimes Windows can get confused when you switch similar processors in a system.

Go to device manager and "uninstall" the processor. The computer will need to reboot, but it should re-detect the CPU correctly.

[xsecret]

QIC0 is 1.26 GHz (9.5x133) Tualatin A4

[wren4777]

Is what windows 7 on a P3?

[CHips]

[xsecret]

[CHips]

I thought about that, however the ThinkPad T23 used to test it officially shipped with 1 and 1.13 GHz options, which have .5 multiplier. Now maybe for some reason only 9.5x would not work...
Also the CPUID Processor Number is 1200 MHz, isn't this the value "engraved" in the CPU? If it were actually a 1.26 GHz part, wouldn't it be IDed as 1266 MHz no matter whether the motherboard supports it or not?
Like if I put a Pentium 3 1400 in some 370 motherboard that somehow supports Tualatins but only at 100 MHz Fsb, it would still be IDed as 1400 MHz while actually running at 1050 MHz.

[frag_]

Name is fused to CPU as processor brand string and can be read by CPUID leaves 80000002-80000004.
According to your cpuid dump it's clearly 1200.
Something must be wrong on Intel side +)
Or maybe it was relabeled? Can we see a photo?

[CHips]

Here are pictures.

[xsecret]

PSU Name String (PNS) can be changed on ES but not on QS. On Intel DB, this QS is linked to a retail SKU that is listed on the official ARK (https://ark.intel.com/content/www/fr/fr/ark/products/27383/mobile-intel-pentium-iii-processor-m-1-26-ghz-512k-cache-133-mhz-fsb.html) but I have no trace of any PC actually using it. BTW, this CPU is listed with many SSPEC : SL6537 (A4) SL6AL (B1), SL6AA (B1). There is no less than 17 (!!) Q-Spec for that SKU, ranging from A3 to C0. They all come in pair for an unknown reason. Maybe some are tagged as 1.20 and other as 1.26 GHz. The QIC0 brother is QIC1.

I have checked the CPU-Z database and there is thousandths of Pentium III-M listed. I can confirm there is no 9.5x Pentium III-M. There is many 1.33 GHz and 1.20 GHz but no 1.26 GHz. On 1.20 GHz, the PNS also changed between A-Step and B-Step from "Intel(R) Pentium(R) III Mobile CPU 1200MHz" to "Mobile Intel(R) Pentium(R) III CPU - M 1200MHz".

So it seems Intel messed up something with the 1.26 GHz P III-M

[CHips]

Very interesting! So no known working Pentium III-M 1266...
There is a SL6AA (1266/512) on Ebay, I am curious if this one is a true 1.26, or also only 1.2 like my QIC0. However $99.98 are asked...
Maybe something went wrong in the Intel factory and 1.26 GHz models ended up with 1.2 GHz dices...

Many 1.33 GHz though? Maybe that SL6CQ that I am chasing is actually common after all, but then I wonder where these folks found theirs...

[CHips]

Mystery solved, I never noticed a setting in the Bios (Power > Low/High Frequency), which allows to choose the max frequency.
For some reason the T23 does not choose 1266, even after a Bios reset due to dead batteries, but the option is available.
The setting changes the Processor Name, at least the frequency part, so it is not hard coded into the Cpu after all. It does not appear if using a production SL6A9 1200 MHz.
And there is no 1333 MHz option with a QOJ8, so unless we have another mystery (is QOJ8 really 1333?!), it looks like that a T23 is maxed out with a 1266 part, unless there is a way to Mod the Bios to fix this.

So here is the first ever 9.5x Pentium 3M Validation :p
http://valid.x86.fr/v5h6s7