Arch Linux

ottoshmidt

Member

From: Tbilisi, Georgia

Registered: 2010-04-03

Posts: 30

How to overclock my CPU

Here is an output of dmidecode -t processor:

# dmidecode 2.11
SMBIOS 2.3 present.

Handle 0x0004, DMI type 4, 32 bytes
Processor Information
        Socket Designation: PGA 478
        Type: Central Processor
        Family: Pentium 4
        Manufacturer: GenuineIntel
        ID: 33 0F 00 00 FF FB EB BF
        Signature: Type 0, Family 15, Model 3, Stepping 3
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                DS (Debug store)
                ACPI (ACPI supported)
                MMX (MMX technology supported)
                FXSR (FXSAVE and FXSTOR instructions supported)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                SS (Self-snoop)
                HTT (Multi-threading)
                TM (Thermal monitor supported)
                PBE (Pending break enabled)
        Version: Intel(R) Pentium(R) 4
        Voltage: 1.3 V
        External Clock: 161 MHz
        Max Speed: 3200 MHz
        Current Speed: 2414 MHz
        Status: Populated, Enabled
        Upgrade: ZIF Socket
        L1 Cache Handle: 0x0008
        L2 Cache Handle: 0x0009
        L3 Cache Handle: 0x000A

it says max speed is 3200 Mhz but maximum possible speed i checked from BIOS was 2475 Mhz setting manually (with frequency/bus combination 166/33 or smth like that), so is there any other way to overclock CPU to its max speed other than from BIOS?

also, that dmidecode output would imply that this is a single core CPU, right? and why do system monitors (from kde/gnome and task manager from XP) show me 2 diagrams as if it was Dual core or smth?

Radioactiveman

Member

From: Germany

Registered: 2010-05-13

Posts: 388

Re: How to overclock my CPU

You should not trust the "Max Speed" value.
For my CPU the output is

Max Speed: 3000 MHz
Current Speed: 3250 MHz (correct)

And yes, you have a singlecore processor but it supports Hyper-Threading.