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CPU Speed

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this Pc im using (a temporary $200.00 special - learning how to Build my own from this site currently) has a setting that for whatever reason resets itself every once in a while. Why might it be doing this ?

The buddy I bought this current PC from said it was a 1000MHz Processor, but he showed me in the BIOS (dont remember where - but i can get it if it's needed) that if I change one of the settings from PC 100MHz to PC133Mhz the cpu speed will increas from 730 MHz to 1000MHz.

At 730MHz it runs pretty darn slow, which is how i can tell when it resets. As soon as i change it back to PC133MHz = 100MHz all is normal again.

Does anyone have any clue what this is about... when I try to ask him he gives me the run around...
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Hi there

It sounds like when you increase the speed to 133MHz, you are actually overclocking either the CPU, RAM or both. This would explain why the system resets itself.

Do you know exactly which cpu & ram you have?
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Can I find the types in the bios or maybe using the PC Wizard 2005...Will try both and repost in a few minutes.
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OK according to PC Wizard:

Processor: There is alot of info here, so here it is..........

General Information :
Internal Specification : AMD Athlon™ Processor
Codename : Thunderbird
Revision : A4
Technology : 0.18µ
CPU ID : 6.4.2
CPU IDEx : 7.4.2

Features :
VME - Virtual Mode Ext. : Yes
DE - Debugging Extension : Yes
PSE - Page Size Extension : Yes
TSC - Time Stamp Counter : Yes
MSR - Model Specific Registers : Yes
PAE - Physical Address Extension : Yes
MCE - Machine Check Exception : Yes
APIC - Local APIC Built-in : No
SEP - Fast System Call : Yes
MTRR - Memory Type Range Reg. : Yes
PGE - Page Global Enable : Yes
MCA - Machine Check Architecture : Yes
PAT - Page Attribute Table : Yes
PSE36 - 36-bit Page Size Extension : Yes
PSN - Unique Serial Number : No
DS - Debug Trace & EMON Store : No
ACPI - Software Clock Control : No
SS - Self Snoop : No
TM - Thermal Monitor : No
HTT - Hyper-Threading : No
SBF - Signal Break on FERR : No
MON - Monitor/Mwait : No
DSCPL - CPL qualified Debug Store : No
TM2 - Thermal Monitor 2 : No
CID - Context ID : No
EST - Enhanced SpeedStep Tec... No
NX Bit - No-execute Page Protec... No
VMX - Vanderpool Technology : No

Miscellaneous :
FPU - Co-processor Built-in : Yes
CX16 - CMPXCHG16B : No
CMOV - Conditionnal Move Inst. : Yes
CLF - Cache Line Flush : No
FXSR - Fast Float Save & Restore : Yes
DAZ - Denormals Are Zero : No
MMX Technology : Yes
SSE Technology : No
SSE2 Technology : No
SSE3 Technology : No
X86-64 Technology : No
AMD MMX Technology : Yes
3DNow! Technology : Yes
Extended 3DNow! Technology : Yes
SMP - MP Capability : No

Power Status :
Voltage Control : No
Frequency Control : No
Thermal Sensor Built-in : No

Mainboard Upgradebility :
Socket/Slot : SOCKET A
Upgrade interface : Unspecified
Supported Speed : 1200 MHz (or more)
Supported Voltage : 1.7V

Advices :
The symbol indicate : Approximate Information
The symbol indicate : Information may be inaccurate


RAM: There is alot of this info here also, so here it is..............

General Information :
DIMM 1 (RAS 0, RAS 1) : 256 (Double Bank) - DIMM, SDRAM
DIMM 2 (RAS 2, RAS 3) : 256 (Double Bank) - DIMM, SDRAM
DIMM 3 (RAS 4, RAS 5) : 128 (Single Bank) - DIMM, SDRAM

Memory Controller Information :
Memory Controller : DIMM, SDRAM
Number of connectors : 3
Max. Module Size : 1024 MB
Max. Memory Size : 3072 MB
Supported Speed : Unspecified
Supported Voltages : 3.3v
Error Detection Method : 64-bit ECC
Error Correction Capability : Unspecified
Current/Supported Interleave : 1-way/1-way

Chipset Information :
Type : SDRAM PC134
Frequency : 134 MHz
FSB/RAM Multiplier : 1/1x
ECC Diagnostic : No
Interleave : 4-way
CAS Latency (tCL) : 3 clocks
RAS to CAS (tRCD) : 3 clocks
RAS Precharge (tRP) : 3 clocks
Cycle Time (tRAS) : 6 clocks

Advices :
The symbol indicate : Approximate Information
The symbol indicate : Information may be inaccurate
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Some boards let you set the clock speeds in Setup or use manual settings with switches or jumpers. The manual settings are more stable.
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I have seen this occur with an Athlon T-Bird 1000 on a PC-Chips mainbaord (it would clock itself back to 750mhz). From memory the mainboard manual mentioned a function that would underclock the system to avoid hardware damage, when certain problems were detected.

It was a very cheap mainboard, and we replaced it with something decent.
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You might be able to get a Bios update for the board that might clear up a few probs, look with google you will soon find a list of bioses for your board.
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