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UPDATED 10/21/03 - Detect cpu make, model, features, cache, speed etc.
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| Submitted on: |
10/7/2003 12:54:00 PM |
| By: |
Paul Caton
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| Level: |
Advanced |
| User Rating: |
By 54 Users |
| Compatibility: |
VB 6.0 |
| Views: |
38353 |
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x86 cpu's have the ability to self-report their make, model, family, features, cache details etc. The included cCPUID class allows the programmer to execute this instruction and retrieve the results. To abstract the complexities of decoding the CPUID data, the included cCpuInfo class presents the programmer with a series of read-only properties. As an example of this, the included VBCPUID application displays the information presented by the cCpuInfo class.
If you are wondering why the 'Real Time Speed' display - try running the VBCPUID app on a SpeedStep cpu.
If you own an unusual cpu, such as an Athlon 64/Opteron, Cyrix etc... I'd be gratefull if you'd go to the 'Actions' tab, 'Save Data...' and email the file to me.
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Other 13 submission(s) by this author
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Your Vote
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Other User Comments
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 10/7/2003 4:06:45 PM: ReadError
I'll try it at home tonight on my Athlon XP 2800+ and tell you the results, currently here, it says I have hyper-threading on a P4 1.6 Ghz, it's a little strange, no?
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10/7/2003 4:49:40 PM: Paul Caton
ReadError, My guess, i'll do a little research, is that the HT technology (in it's earliest forms) was built in from the very begining of the P4... that Intel revised and improved the technology as they released each new model and only switched it on, enabled it, when they got to the 2.8Ghz??? model. IOW, there's a little logic to add to the app beyond merely reporting what the CPU tells me... I'm not guessing here, just reporting what the processor tells me. Anyway, I'll look into it some more.
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10/7/2003 6:03:03 PM: ReadError
I tested on my athlon, everything seems OK, also do you know how to look for MMX+, 3DNOW and 3DNOW+ support?
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10/7/2003 9:10:39 PM: Paul Caton
UPDATE - 3DNOW detection added. One advantage of voting is that I can email you regarding any updates.
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10/7/2003 10:07:49 PM: ReadError
it's working great, I see 3dnow and 3dnow+ supported and the full name string (AMD Athlon(tm) XP 2800+)
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10/7/2003 10:29:38 PM: System33r
This is quite nice!
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10/8/2003 4:23:03 AM: Light Templer
It must be great when you are able to speak assembler AND VB! Fine stuff, as always! A short notice to the useable Win OS versions would in your description here would be helpful (W98 only? Or all up to XP?) 5 from me and regards! Light Templer
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10/8/2003 5:45:36 AM: Paul Caton
LT, I *hope* it works on all Windows OS's - I don't have access to Win9x but I imagine someone would have complained by now. Thanks for the vote, as ever.
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10/8/2003 8:02:24 AM: Paul Caton
If anyone out there has a Hyper-Threading P4 (Genuine, not just reported as such) Question: does the app report 2 "Logical CPU's" ??
Oops, spoke too soon. Just got a report of a problem of hanging in the IDE w/Win98 - Exe ran, but reported a stack error on exit. Maybe the OS, might be the CPU. Investigating...
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10/8/2003 10:41:39 AM: loopz87
as always...great job.
*****, you deserve them.
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10/8/2003 1:46:35 PM: Ruturaj
This is a fantastic start for any RegKeyGen program. All info collected in nice way !
Great work. ASM+VB is always great to see working. Somebody said about the Support OS ... well , I've tested it on Win98 , Win2000 Server , Workstation and WinXP ... everything worked fine. Not tested it on NT though.
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10/8/2003 2:59:59 PM: Paul Caton
Ruturaj, thanks for the vote, thanks for the OS confirmation, I suspect the win98 report I received was a one-off.
Re RegKeyGen: oddly, there's just such a submission currently at the top of the monthly contest leader board. I mailed him yesterday, he's looking into it. This gives me a plan for an update... I'll create a cCpuInfo class that abstracts all the grunt-work calls into the cCPUID class, decoding the data and presenting a bunch of read-only properties to the user. I'll then write a CPUID form app to present that data. That way, a user that wants a easy way to get the data for their own app can just instantiate the cCpuInfo class and read the appropriate properties... they won't need to pull apart my existing code.
If this interests you PSC'ers, be sure to vote, or at least leave a comment/mail me and I'll inform you when I do the update. Shameless me :-)
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10/9/2003 2:30:11 AM: MaRiØ G. Serrano
impresionant use of class functions patching!!! 5g
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10/9/2003 5:30:31 AM: Jing Polito
u deserve 5 g's
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10/9/2003 12:18:08 PM: Manuel Muñoz
In my PIII works fine, but in a PII it fall in a do-loop ....?
If I change the code in the lines:
'---------------------------
'Loop thru the extended levels
Set itm = lv.ListItems.Add(,...
itm.Bold = True .....
nLevel = EXT_LEVEL 'is correct?
eax = EXT_LEVEL ' <---added
nLevel = 0 ' <---added
'---------------------------
Then works.
Is OK?
God work 5 globes!.
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10/9/2003 1:47:06 PM: Paul Caton
Manuel, Ah-Ha! thanks, that helps.
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10/9/2003 11:20:14 PM: DenVoronov
Nice coding, but
"Serial Number"=Not available
Running on Windows XP HE,Notebbok Toshiba Sattelite, CPU 2.6 Mhz P4
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10/10/2003 3:26:54 AM: Agung Nugroho
Works fine on mine, P4 2GHz W2K Svr. Thanks
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10/10/2003 3:29:05 AM: Agung Nugroho
uhmm.. except the 'Serial Number' thing
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10/10/2003 4:44:35 AM: Paul Caton
Re: The Serial Number thingy.... Intel introduced it on the P3 but then, under pressure from privacy advocates, removd it from the P4. They also released info on how to disable it on the P3. So, you'll only see the SN if... you've got a P3 and it hasn't been disabled (usually, I think, in the BIOS).
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10/11/2003 8:20:20 AM: Peter Hebels
Tested it on an AMD XP 2000+, worked great! Also the speed calculation is very interresting.
5 globes from me :)
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10/11/2003 9:05:21 AM: Vlad Vissoultchev
Hi Paul,
Here is my QA report: P4 2.4GHz w/ HT on Win2k3 working ok. Also tested on Win98 under VMWare -- passed, including speed calculation (+/- fraction of a percent)! :-)))
cheers,
</wqw>
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10/12/2003 12:14:14 PM: Alexandru Ionescu
Great code again Paul!
Did you get my last two emails? Perhaps your inbox was full...I wasn't able to send them...
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10/14/2003 9:16:06 AM: OR13
A great code! I wanted to write a pretty angry comment, because I saw that you used Paul Caton's assembly-code, but... I found-out that you're him, so thanx for a great code.
By the way... Can you submit an explanation on how to use assembly in VB? I would be thankful... It's really important to me, because VB was my speciality and now I'm forgetting it because I love assembly. A combination will be more than helpful to me! (by the way, 5 globes from me...)
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10/14/2003 2:14:46 PM: ReadError
I was wondering how you made the screenshot with my stats file, then I saw the load file button hehe, nice update.
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10/14/2003 3:13:08 PM: Paul Caton
OR13, LOL. okay, okay... I'll FORCE myself to do a tutorial or something on the subject. I can't help it, things like that make me sweat
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10/14/2003 10:20:58 PM: Ruturaj
Hi Paul !
I got your mail on Update of this Class. (dated : Tue, 14 Oct 2003 13:55:44 -0500)
Great to see that you've continued working on this complex topic & making it as easy as possible for others. And also , you're kind enough to share your source code with us ...
I'm going to download the Update and eager to see & test the changes.
Regards.
Ruturaj.
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10/14/2003 10:49:42 PM: Alexandru Ionescu
Great Paul...amazing :) I've PMed you my email...hotmail still won't let me reply you.
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10/15/2003 6:13:30 AM: Paul Caton
Further to my description comment... even if you don't have an *interesting* or unusual cpu, feel free to send me a data file... I'd like to include a spectrum of processors with the project for comparison purposes. Fear not, there's nothing in the data file to ID YOU! It's just a text file, take a look-see.
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10/15/2003 6:23:51 AM: Agung Nugroho
I'm waiting for Vlad's action. Paul initiates something interesting and then Vlad will do so hehehe... Great update, Paul. C'mon Vlad, do something :-)
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10/15/2003 11:49:19 AM: Paul Caton
Minor update 10/15 - nothing drastic, mainly visual, no functional differences.
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10/16/2003 2:14:39 AM: Robert Rayment
All OK on Win98 PII now *****
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10/16/2003 2:27:19 AM: Robert Rayment
.. but serial number unavailable.
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10/16/2003 4:35:30 AM: Paul Caton
Robert, The Serial Number: Intel
introduced it on the P3 but then, under pressure from privacy advocates, removed it from the P4. They also released info on how to disable it on the P3. So, you'll only see the SN if... you've got a P3 and it hasn't been disabled (usually, I think, in the BIOS).
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10/18/2003 4:38:34 PM: Keith Stanier
This is the best app I've seen for CPU info. Works great with Win98SE. I don't see why you need to save the last CommonDialog path in the registry. Keep up the good work, 5 globes from me.
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10/20/2003 1:52:05 PM: Paul Caton
Small update... I noticed a problem when the class was compiled native and optimized (either small or fast). I hate that, different behaviour based on compilation options and i'm not talking about aliasing.
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10/21/2003 7:10:28 AM: Paul Caton
Another small update... I located the cause of the issue, a small bug in the cpuid assembler that was only exposed by compiling optimized. The real surprise is that compiling un-optimized-native or psuedo code was tolerating a stack adjustment goof. I'll email those that voted to warn them and appraise them of the update. Scary.
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10/27/2003 6:29:32 AM: Happy Lobster
Great code. Works a treat. 5 globes. Say no more.
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11/16/2003 7:40:19 AM: Lam Ri Hui
congratulation Paul, you are the ocntest winner of the month.
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11/25/2003 9:58:42 AM: Nathanael B
Wow, this looks awesome, 5 globes!!
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11/28/2003 11:02:56 AM:
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12/9/2003 4:26:23 AM:
Hi paul phenominal work bro, i have a 2.8ghz HT cpu (800mhz fsb) and it does report 2 logical cpu's. Great Great work!
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12/9/2003 4:27:51 AM:
that was me ^^^ btw 5 globes from me
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12/19/2003 1:25:23 PM: Patrick Dickey
I'm downloading your program with the intent to combine it with the
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1/6/2004 11:19:12 PM:
thx 4 paul, ur code realy give me hands to finish my final project
thx a lot
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3/8/2004 3:55:35 PM:
Excelente!
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4/17/2004 12:28:43 AM:
Good software comes in hand. I made it an (.EXE) so if any one doesn't have (VB) it will still work if they want it.
Thanx
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4/29/2004 11:22:54 PM:
That is a great program. Please keep me posted on any up-dates. Merci!
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6/26/2004 10:20:48 AM:
Great program. Five * from me.
Please keep me posted on all updates.
Rej
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6/26/2004 12:40:13 PM:
Can only say *****
and thanks!!
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8/24/2004 10:45:31 PM:
Great code, well done!
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9/8/2004 4:43:24 PM: Tim Rude
Very cool code!
Works beautifully on my Athlon 2400+ with Win2K.
I compiled it and tried running it on a very old AMD 586-133 (80486 class) machine running Win95B. The program crashes on this old machine.
Is this code backwards compatible with pre-Pentium machines running Win95?
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10/13/2004 3:30:14 PM:
This is a great Code 5 *. Please keep me
posted on any up-dates, I see that the M processors by Intel are not detected.
yad@aquanet.co.il
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10/26/2004 10:47:06 PM: Brian Payne
I LOVE YOU.
5 Ferraris from me.
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10/26/2004 11:59:57 PM:
Suggestion. For hyperthreading, could you do the check that hyperthreading is enabled in the BIOS? Im pretty sure your code will report the existance of hyperthreading as a CPU capability, regardless of whether the BIOS has it enabled. I believe it involves calls to GetProcessAffinityMask(). The Intel CPU Count utility has source code, but im having trouble translating it to VB.
Thanks.
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10/27/2004 2:25:55 AM:
Paul. Im still trying to get the hyper-threading bios/OS recognization verification code to work. So far my C to VB translation is working but there is a snippet of ASM code and im wondering if you could convert this into one of those Hex strings so that i can do the VTAble method.
'unsigned char GetAPIC_ID(void)
'{
' unsigned int Regebx = 0;
' if (!HTSupported()) return (unsigned char) -1; // HT not supported
' // Logical processor = 1
' __asm
' {
' mov eax, 1
' CpuID
' mov Regebx, ebx
' }
'
' return (unsigned char) ((Regebx & INITIAL_APIC_ID_BITS) >> 24);
'
'}
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3/12/2005 7:33:26 AM: GB
Mine does not show HT enabled, which it should not. Good job, it sees the Dual Opteron 242's.
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5/5/2005 1:11:42 PM: Spector
Great job Paul! I'm trying to figure out how to retrieve the CPU's multiplier, Bus speed, and codename. Also the cpu brand function returns "67598" when other cpu info programs return "14". My cpu a P4 mobile.
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5/10/2005 9:44:00 PM: Spector
I fixed the bug in the "CpuBrand" function, the first part should read:
If m_nLevelsStd >= 1 Then
CpuBrand = Std(1).ebx And &HFF
End If
This will return the correct CPU Brand ID. I've also figured out how to decipher the CPU codename as well and much more detail on model types. The retrieval of cache descriptors for Cyrix and Via processors is also in the works.
I want to thank Paul Caton again for the excellent starting point!
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5/11/2005 4:00:17 AM: Paul Caton
Hey Spector, if you want to take on the project and resubmit with your changes, that's okay with me.
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5/11/2005 10:06:16 PM: Spector
Thanks, I just might do that!
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5/14/2005 8:18:47 PM: Paul Caton
If it's any help, I got my data from...
http://www.sandpile.org/ia32/cpuid.htm
It seems there's two new std levels (4 & 5) for multi-core. Dunno how up to date it is.
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5/26/2005 6:43:36 AM:
after going through your code and the website you have told us about I have finally beable to update the models for newer cpus. Such as my AMD 64 3500+ doesnt show a model nunber with your code, only cuase it is a newer chip. well that site is awsome and I was able to find the right keys to add in and get the up updated. Thanks agin.
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6/28/2005 7:48:35 AM: Spector
I will be resubmitting my changes soon, I got sidetracked on a couple projects. It now supports models and codenames for all processors except the new dual-core pentiums (I don't know anyone who has one). I will fix the HT status issue when I get my new P4 HT cpu in a couple weeks. I'm still having trouble determining the cpu multipler and bus speed. I believe the key is found somewhere is the MSR.
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6/28/2005 7:51:04 AM: Spector
Addon:
I've seen some c++ implementations use the cpu's FID and pass it lookup tables to get the multipler and bus speed. If anyone can help out on this, please do.
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12/4/2007 1:20:57 AM: Ruturaaj
Hi! I'm trying to import classes to my existing application and when I try yo get the speed of CPU, I get Division by Zero error. Can't understand why this is happening so. Also, I tried to compile a DLL of Classes and face the same issue. I'm new to VB and ASM. Paul, can you please guide me how to make it to work as DLL or OCX? I'm sure I will get to learn a lot from your guidance. Eagerly waiting for your reply ...
-- Ruturaaj.
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