How to find a CPU Stepping(SSpec).

[Boulard83]

From TPU ( techpowerup )

No processor design is perfect. The first version of a new microprocessor product is the A-0 step. Later, as improvements are made to the product for functional (bug) fixes or manufacturing improvements, the stepping number will increase.

Generally speaking, minor changes result in an increased number, (that is, A-1 to A-2) while more complex changes result in the letter being changed (that is, A-2 to B-0).

I dont know if there is already something like this on OCForum. I decided to do one.

Lets take a look at your CPU box first and find the # we are looking for.

sSpec number in the processor markings. ( CPU top )

Your sticker/CPU can differ, but the number are the same. On newer CPU the # is labeled as "S-SPEC : SLxxx" or something.

Note : Everything is from INTEL website.

Now there are all the Intel CPU since the Pentium D. ( Complain if you want older )

Tip : Press CTRL + F and type in your CPU name
EX: Q9550

Pentium D - S-Spec - Mfg Tech - Stepping
960 - SL9AP - 65 nm - C1
960 - SL9K7 - 65 nm - D0
950 - SL95V - 65 nm - C1
950 - SL94P - 65 nm - B1
950 - SL9K8 - 65 nm - D0
945 - SL9QQ - 65 nm - D0
945 - SL9QB - 65 nm - C1
940 - SL95W - 65 nm - C1
940 - SL94Q - 65 nm - B1
840 - SL8CM - 90 nm - B0
840 - SL88R - 90 nm - A0
935 - SL9QR - 65 nm - D0
830 - SL88S - 90 nm - A0
830 - SL8CN - 90 nm - B0
930 - SL8WR - 65 nm - B1
925 - SL9KA - 65 nm - D0
930 - SL95X - 65 nm - C1
925 - SL9D9 - 65 nm - C1
930 - SL94R - 65 nm - B1
920 - SL94S - 65 nm - B1
820 - SL88T - 90 nm - A0
915 - SL9DA - 65 nm - C1
915 - SL9KB - 65 nm - D0
820 - SL8CP - 90 nm - B0
920 - SL8WS - 65 nm - B1
805 - SL8ZH - 90 nm - B0

Pentium EX - S-Spec - Mfg Tech - Stepping
965 - SL9AN - 65 nm - C1
955 - SL8WM - 65 nm - B1
955 - SL94N - 65 nm - B1
840 - SL8FK - 90 nm - A0

Intel Pentium - S-Spec - Mfg Tech - Stepping
E6300 - SLGU9 - 45 nm - R0
E5400 - SLB9V - 45 nm - R0
E5300 - SLB9U - 45 nm - R0
E5300 - SLGQ6 - 45 nm - R0
E5200 - SLAY7 - 45 nm - M0
E5200 - SLB9T - 45 nm - R0
E2220 - SLA8W - 65 nm - M0
E2200 - SLA8X - 65 nm - M0
E2210 - SLB9R - 45 nm - R0
E2210 - SLB7N - 45 nm - M0
E2180 - SLA8Y - 65 nm - M0
E2160 - SLA8Z - 65 nm - M0
E2160 - SLA9Z - 65 nm - G0
E2160 - SLA3H - 65 nm - L2
E2140 - SLALS - 65 nm - G0
E2140 - SLA3J - 65 nm - L2
E2140 - SLA93 - 65 nm - M0

Core 2 Duo - S-Spec - Mfg Tech - Stepping
E8600 - SLB9L - 45 nm - E0
E8500 - SLAPK - 45 nm - C0
E8500 - SLB9K - 45 nm - E0
E7600 - SLGTD - 45 nm - R0
E6850 - SLA9U - 65 nm - G0
E8400 - SLAPL - 45 nm - C0
E8400 - SLB9J - 45 nm - E0
E7500 - SLB9Z - 45 nm - R0
E8300 - SLAPJ - 45 nm - C0
E7400 - SLGQ8 - 45 nm - R0
E7400 - SLB9Y - 45 nm - R0
E7300 - SLAPB - 45 nm - M0
E6700 - SL9ZF - 65 nm - B2
E6750 - SLA9V - 65 nm - G0
E6700 - SL9S7 - 65 nm - B2
E8190 - SLAQR - 45 nm - C0
E8200 - SLAPP - 45 nm - C0
E7300 - SLB9X - 45 nm - M0
E4700 - SLALT - 65 nm - G0
E7200 - SLAPC - 45 nm - M0
E7200 - SLAVN - 45 nm - M0
E4600 - SLA94 - 65 nm - M0
E6600 - SL9S8 - 65 nm - B2
E6600 - SL9ZL - 65 nm - B2
E6550 - SLA9X - 65 nm - G0
E6540 - SLAA5 - 65 nm - G0
E4500 - SLA95 - 65 nm - M0
E6400 - SL9S9 - 65 nm - B2
E6400 - SL9T9 - 65 nm - L2
E6420 - SLA4T - 65 nm - B2
E6400 - SLA97 - 65 nm - M0
E4400 - SLA98 - 65 nm - M0
E4400 - SLA3F - 65 nm - L2
E6300 - SL9SA - 65 nm - B2
E6320 - SLA4U - 65 nm - B2
E6300 - SL9TA - 65 nm - L2
E4300 - SLA99 - 65 nm - M0
E4300 - SL9TB - 65 nm - L2

Core 2 Quad - S-Spec - Mfg Tech - Stepping
Q9650 - SLB8W - 45 nm - E0
Q9550 - SLB8V - 45 nm - E0
Q9550S - SLGAE - 45 nm - E0
Q9550 - SLAWQ - 45 nm - C1
Q9450 - SLAWR - 45 nm - C1
Q6700 - SLACQ - 65 nm - G0
Q9400 - SLB6B - 45 nm - R0
Q9400S - SLG9U - 45 nm - R0
Q8400S - SLGT7 - 45 nm - R0
Q8400 - SLGT6 - 45 nm - R0
Q9300 - SLAWE - 45 nm - M1
Q8300 - SLB5W - 45 nm - R0
Q6600 - SLACR - 65 nm - G0
Q6600 - SL9UM - 65 nm - B3
Q8200 - SLG9S - 45 nm - R0
Q8200S - SLG9T - 45 nm - R0
Q8200 - SLB5M - 45 nm - M1

Core 2 EX - S-Spec - Mfg Tech - Stepping
QX9770 - SLAWM - 45 nm - C1
QX9775 - SLANY - 45 nm - C0
QX6850 - SLAFN - 65 nm - G0
QX9650 - SLAN3 - 45 nm - C0
QX9650 - SLAWN - 45 nm - C1
QX6800 - SL9UK - 65 nm - B3
X6800 - SL9S5 - 65 nm - B2
QX6800 - SLACP - 65 nm - G0
QX6700 - SL9UL - 65 nm - B3

I7 - S-Spec - Mfg Tech - Stepping
I7-950 - SLBEN - 45 nm - D0
I7-940 - SLBCK - 45 nm - C0
I7-920 - SLBCH - 45 nm - C0
I7-920 - SLBEJ - 45 nm - D0

I7 EX - S-Spec - Mfg Tech - Stepping
I7-975 - SLBEQ - 45 nm - D0
I7-965 - SLBCJ - 45 nm - C0

2009/08/01

 

[Boulard83]

...

 

[Boulard83]

THX alot

 

[Boulard83]

Can you move it to the CPU section plz !

 

[LandShark]

moved for you.

 

[Boulard83]

THX so much LandShark !

 

[King Wraith]

Sorry to resurrect an old thread, but I have a question.

I am looking at upgrading a couple of Xeon processors in an older Dell Precision workstation. If I understand you correctly, the SLxxx number is what has to match for the processors to work? I have seen so many threads on making sure you match Xeon processors but I'm unsure as to what to look for on the processors to make sure they match. I know I can just go to ebay and bid on matching Xeons, but I want to understand how to match CPU steppings.

 

[Automata]

King Wraith, that is correct. You will want the same models. So if it had a SLANU as the first processor, the second should also be a SLANU.

I don't believe stepping matters, but I would match them.

 

[notarat]

Sorry to resurrect an old thread, but I have a question.

I am looking at upgrading a couple of Xeon processors in an older Dell Precision workstation. If I understand you correctly, the SLxxx number is what has to match for the processors to work? I have seen so many threads on making sure you match Xeon processors but I'm unsure as to what to look for on the processors to make sure they match. I know I can just go to ebay and bid on matching Xeons, but I want to understand how to match CPU steppings.

If you're unsure what to get, you cal always see what you have by opening Microsoft Power Shell (pre-installed with Windows 7 & 8)

Open the Powershell ISE and type

Get-WmiObject win32_Processor at the PS C:\Users\UserName>

press enter (note the part I bolded below)

It will show the following information:

__GENUS : 2
__CLASS : Win32_Processor
__SUPERCLASS : CIM_Processor
__DYNASTY : CIM_ManagedSystemElement
__RELPATH : Win32_Processor.DeviceID="CPU0"
__PROPERTY_COUNT : 48
__DERIVATION : {CIM_Processor, CIM_LogicalDevice, CIM_LogicalElement, CIM_ManagedSystemElement}
__SERVER : MANDARKATRON5000
__NAMESPACE : root\cimv2
__PATH : \\MANDARKATRON5000\root\cimv2:Win32_Processor.DeviceID="CPU0"
AddressWidth : 64
Architecture : 9
Availability : 3
Caption : Intel64 Family 6 Model 42 Stepping 7
ConfigManagerErrorCode :
ConfigManagerUserConfig :
CpuStatus : 1
CreationClassName : Win32_Processor
CurrentClockSpeed : 3401
CurrentVoltage :
DataWidth : 64
Description : Intel64 Family 6 Model 42 Stepping 7
DeviceID : CPU0
ErrorCleared :
ErrorDescription :
ExtClock : 100
Family : 198
InstallDate :
L2CacheSize : 1024
L2CacheSpeed :
L3CacheSize : 8192
L3CacheSpeed : 0
LastErrorCode :
Level : 6
LoadPercentage : 19
Manufacturer : GenuineIntel
MaxClockSpeed : 3401
Name : Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
NumberOfCores : 4
NumberOfLogicalProcessors : 8
OtherFamilyDescription :
PNPDeviceID :
PowerManagementCapabilities :
PowerManagementSupported : False
ProcessorId : ************
ProcessorType : 3
Revision : 10759
Role : CPU
SocketDesignation : SOCKET 0
Status : OK
StatusInfo : 3
Stepping :
SystemCreationClassName : Win32_ComputerSystem
SystemName : Mandarkatron5000
UniqueId :
UpgradeMethod : 36
Version :
VoltageCaps : 5

 

[King Wraith]

Awesome! Thank you thideras and notarat, that info helps allot. Now off to ebay I go.