Intel Pentium D Processors 930/940/950 B-1 to C-1 Stepping Change

[jVIDIA]

Intel Pentium D Processors 930/940/950 B-1 to C-1 Stepping Change

Description of Change to the Customer

Boxed Intel® Pentium® D Processors 930, 940 and 950 will undergo the following changes for the B-1 to C-1 processor stepping conversion:

• CPUID will change from F62 to F64
• C-1 is pin compatible with B-1
• New S-specs for converting products
• The advanced power management features Enhanced HALT State and Enhanced Intel
• SpeedStep® Technology will be enabled
• The Pentium D Processors 940 and 950 will change from the 2005 Performance FMB (130W) to the 2005 Mainstream FMB (95W)
• The Platform Compatibility Guide indicating the processor FMB will be added to the processor mark as illustrated with the following example:
  
  

Does anyone already have one of this C1's ?

And the 930D isn't going to consume less Watt's also ??

[freecableguy]

Ordered a 940 for a production system from Newegg middle of last week. It was B1. If anyone cares....

[Levish]

And the 930D isn't going to consume less Watt's also ??

maybe it was already below the 95watt threshold

[jVIDIA]

Anyone knows any real results in comparing B1 and C1 steppings ?

[JimboJoe43]

The 930 C1 will not reduce the power consumption / heat levels from B1, they are in fact the same specifications.

I have seen several online retailers such as www.jr.com listing processors as having the speedstep feature.

I have emailed those retailers and asked them to verify this for me or to guarantee that the information listed on their websites are accurate. I have not yet received a satisfying response from any of them.

www.pchotline.com does list steppings in their product info but they are all B1..

There was some discussion about C1 steppings in this thread: http://xtremesystems.org/forums/showthread.php?t=97308

[jVIDIA]

Thanks JimboJoe43.

As for a good OCer wich do your guys recomend ? 930 or 940 ?

Will the 940 C1 OC better now because of less heat produced ?

[Merkor]

In Germany we are all awaiting the new stepping but it has yet to come. People here got 9xx CPUs with a 05/06/2006 pack date and it was B1.

[jVIDIA]

I'm beginning to think the C1's were delayed.

[JoeBar]

I've also bought a 940 last week and it's a B1.
As for if the C1's are better oc'ers look here.

[jVIDIA]

It seems no better in Oc then the B1's.

[sokos]

hi guys, has anybody even seen one of these C1 revision CPU's?
I ve been looking around for a week now and nobody has heard of them.
I ve been checking the boxes at retail stores and they all have written on them: SL94R which is still the B-1 D930 CPU

[jVIDIA]

Lust bought a recent 940D ( pack date = 19/04/2006 ) and it is still a B1

[PcCI2iminal]

B1

[jVIDIA]

PcCI2iminal, is that one a good OCer ?
Have you tried it yet ?

[PcCI2iminal]

PcCI2iminal, is that one a good OCer ?
Have you tried it yet ?

cooler box


thermalright HR-01



lapping


scores


and dice

http://valid.x86-secret.com/show_oc?id=94893

[jVIDIA]

UUUuuuuu nice.

Just received today my 940D too !
It's pack date is 19/04/2006.
PcCI2iminal , hope it's a kick ass OCer like your's.

At 4.5 what was the voltage ?

[sokos]

so no news on the C-1 eh? Dammit Intel..

[JoeBar]

UUUuuuuu nice.

Just received today my 940D too !
It's pack date is 19/04/2006.
PcCI2iminal , hope it's a kick ass OCer like your's.

At 4.5 what was the voltage ?

I have one like yours. It goes up to 4.52ghz watercooled with 1.5v.

[Rudyn]

How do you guys differentiate between B1 and C1. Mine is SL94R, pack date 03/22/2006 930D. Cheers!

[jVIDIA]

How do you guys differentiate between B1 and C1. Mine is SL94R, pack date 03/22/2006 930D. Cheers!

There are 3 ways to see that.

in the sSpec : C1 ones are SL95_ instead of SL94_

in the IHS : it should be .../800/05A

in a program like CPU-Z : it should say C1 in the stepping