A great mystery no OC expert has solved yet - CAN YOU?

[swambast]

OK, hello everyone, this is my first post here, so take it easy. I don't have a whole lot of overclocking experience, but would like some!

OK, for starters, here is a general summary of my rig:

System Specs:
MSI 865PE-NEO2-LS (601-6728-020)
AMI BIOS version 2.5
P4 Northwood, Socket 478, 2.8 Ghz/800Mhz FSB HT Enabled
CPU Specs as reported by CPU-Z:
Intel Pentium 4 Northwood CPU 2.80Ghz, Brand ID 9, mPGA-478
Family F, Model 2, Stepping 9, Revision D1
4 DIMMS (256MBx4)=1GB KingMax PC3200 DDR400, Model # MPXB62D-38KT3R-PEA
PowMAX PS LP-8800D, 400 watt, max load +3.3@28A,+5@30A,+12@25A,-5@0.3A,-12@0.8A,+5vsb@2A, 70% min@full load
INTEL 865 .INF Drivers (6.0.1.1002 5/7/2004)
Main: Western Digital Raptor, 10K rpm, 36GB
2nd: Maxtor ATA133 7200rpm 120GB
CD-RW: Lite-On 52x32x52
BFG Tech GeForce 6800 GT OC 256MB GDDR3 AGP Graphics Card
SoundBlaster Audigy 2
ViewSonic Professional P225FB 22" monitor

I have overclocked the 2.8Ghz to 3.14 using the following settings listed below, and it has run rock-solid stable. But, here is the greatest mystery of them all, that I just can't figure out:

THE GREAT MYSTERY
When moving the FSB up from 224 to 228 giving me a DDR clock memory of 456 - WinXp, CPUZ and SiSoft Sandra all report the processor as 1.6Ghz but the BIOS sees it as 3.19Ghz. Performance, unfortunately, does in fact equal a 1.6Ghz UGH! Does ANYONE know why this is happening? No one has been able to solve that mystery as of yet...

Also, I have heard from other experts that this D1 model will bomb out usually at around a FSB of 230. Can anyone comment on that, because so far I have found that to be true.

HERE ARE MY SUCCESSFUL OVERCLOCK SETTINGS FROM 2.8 -> 3.14
Configure SDRAM Timing by SPD Disabled
CAS# Latency 3
RAS# Precharge 4
RAS# to CAS# Delay 4
Precharge Delay 6
Burst Length 8
AGP Aperture Size 128
FREQUENCY/VOLTAGE
Performance Mode (slow, fast, turbo, Ultra Turbo) SLOW
DRAM Frequency 448
Adjust CPU Bus Clock (Mhz) 224
DDR Clock (Mhz) 448
Adjust AGP/PCI Clock (Mhz) 66.66/33.33
CPU Vcore Adjust No
CPU Vcore 1.5375
DDR Power Voltage 2.6500
AGP Power Voltage 1.5000

SiSoftware Sandra Prof. 2005 System Info
Front Side Bus Speed (4x)/Memory Bus Speed (2x) 224
Front Side Bus Data Rate (FSB Speed x4) 896
Memory Bus Speed (FSB Speed x2) 448
CPU SPEED (GHz with 14x multiplier) 3.14

PRIME 95 Results (PASS/FAIL) PASS
Time Run 7 hrs 20 mins

Temps Idle (C): CPU 31/Case 35
Temps Load (C): 40-45C


CPU Specs as reported by CPU-Z

Intel Pentium 4 Northwood CPU 2.80Ghz, Brand ID 9, mPGA-478
Family F, Model 2, Stepping 9, Revision D1

Current Clocks:
Core Speed: 3135.8 (x14 Multiplier)
Front Side Bus: 224.0 Mhz
Bus Speed: 895.9Mhz

Memory
Frequency: 224.0Mhz
FSB:DRAM: 1:1
CAS# Latency: 3.0 clocks
RAS# to CAS# Delay: 4 clocks
RAS# Precharge: 4 clocks
Cycle Time (Tras): 6 clocks


BASELINE/DEFAULT SPECS
As a point of reference, here is my baseline/default system specs:

ADVANCED CHIPSET FEATURES
DRAM Timing Setting…
Configure SDRAM Timing by SPD Enabled
CAS# Latency 2.5 Clocks
RAS# Precharge 2 Clocks
RAS# to CAS# Delay 3 Clocks
Precharge Delay 5 Clocks
Burst Length 8
AGP Aperture Size 128

FREQUENCY/VOLTAGE
Performance Mode
(slow, fast, turbo, Ultra Turbo)TURBO
CPU Ratio Selection Locked
DRAM Frequency 400 Mhz
Spread Spectrum Disabled
Adjust CPU Bus Clock (Mhz) 200
DDR Clock (Mhz) 400
Adjust AGP/PCI Clock (Mhz) 66.66/33.33
CPU Vcore Adjust No
CPU Vcore 1.5250V
DDR Power Voltage 2.65V
AGP Power Voltage 1.50V

SiSoftware Sandra Prof. 2005 System Info
Front Side Bus Speed ( 4 x ) 203
Front Side Bus Data Rate (203x4) 812
Memory Bus Speed (2 x) 203
Memory Bus Speed (203x2) 406
CPU SPEED (GHz with 14x multiplier) 2.84

Thanks for any insight,
Steve

[i found nemo]

try raising ur multiplier lol in windows with cpumsr i think it's called, show us a screenie of cpu-z

or d/l crystalcpuid44 then click on function....you should see it

[swambast]

Well, I was able to push my rig a bit more, now to 2.8->3.16 with FSB at 226 but I've only primed it successfully so far for 2 hours. Setting the FSB to 227 results in Prime crashing in 5 minutes. Setting the FSB to 228 somehow makes the computer think it's a 1.6Ghz. I must be hitting some kind of wall/threshold, and quite frankly, I don't know what to do next...

Here is the requested and now current Crystal info - COOL program by the way, I think it's much better than CPUZ.

----------------------------------------------------------------
CrystalCPUID 4.4.5.253 (C) 2002-2005 hiyohiyo ----------------------------------------------------------------

OS : Windows XP Professional SP1 [ 5.1 Build 2600 ]
Date : 2005/05/25 11:45:01

CPU Name : Intel Pentium 4 HT (Northwood)
Vendor String : GenuineIntel
Name String : Intel(R) Pentium(R) 4 CPU 2.80GHz
Architecture : x86
Process Rule : 0.13 um
Platform : Socket 478 [2]
CPU Type : Original OEM processor [0]
Number(Logical) : 2
Hyper-Threading : 2
Family : F
FamilyEx : 00
Model : 2
Stepping : 9
APIC : 00
Brand ID : 09
Microcode ID : 14
Feature : MMX SSE SSE2 HTT
PowerManagement :

Current Original
Clock : 3164.38 MHz 2800.00 MHz
System Clock : 226.03 MHz 200.00 MHz
System Bus : 904.11 MHz 800.00 MHz
Multiplier : 14.00 14.00
Data Rate : QDR
Over Clock : 13.01 %

L1 T-Cache : 12 KuOps
L1 D-Cache : 8 KB
L2 Cache : 512 KB [Full:3164.38 MHz]
Memory : 1024 MB

CPUID : EAX EBX ECX EDX
----------------------------------------------
00000000 : 00000002 756E6547 6C65746E 49656E69
00000001 : 00000F29 00020809 00004400 BFEBFBFF
00000002 : 665B5001 00000000 00000000 007B7040
80000000 : 80000004 00000000 00000000 00000000
80000001 : 00000000 00000000 00000000 00000000
80000002 : 20202020 20202020 20202020 6E492020
80000003 : 286C6574 50202952 69746E65 52286D75
80000004 : 20342029 20555043 30382E32 007A4847

MSR : EAX1 EDX1 EAX2 EDX2
: 00000080 00000000 0E12000E 00000000
QPF : 3164.380000 MHz

----------------------------------------------------------------
Chipset Information
----------------------------------------------------------------
Chipset : Intel 865G/PE/P/848P (Springdale-G/PE/P)
North Bridge : [8086:2570.02] Intel 82865G/PE/P/848P
South Bridge : [8086:24D0.02] Intel 82801EB/ER (ICH5/R)
Video Chip : [10DE:0045.A1] NVIDIA GeForce 6800 GT (NV40)

----------------------------------------------------------------
BIOS Information by WMI (Windows Management Interface)
----------------------------------------------------------------
BIOS Vendor : American Megatrends Inc.
BIOS Caption : Version 1.00
BIOS Version : AMIINT - 10
BIOS Date : 09/29/2004
SM BIOS Caption : V2.5
SM BIOS Version : 2.3
Mother Vendor : MICRO-STAR INC.
Mother Product : MS-6728
Mother Version : 100
System Vendor : MICRO-STAR INC.
System Model : MS-6728

----------------------------------------------------------------
System Information by DMI (Desktop Management Interface)
----------------------------------------------------------------
SM BIOS Version : 2.3
BIOS Vendor : American Megatrends Inc.
BIOS Version : V2.5
BIOS Date : 09/29/2004
BIOS ROM Size : 512 KB
Mother Vendor : MICRO-STAR INC.
Mother Product : MS-6728
Mother Version : 100
CPU Socket : FC-478
CPU Vendor : Intel
CPU Version : Intel(R) Pentium(R) 4 Processor
Current Clock : 3164 MHz
External Clock : 226 MHz
Max Clock : 4000 MHz

[totensiebush]

So CrystalCPUID shows it as being at the clock it should be at. Try running it and CPU-Z at the same time, and see if they have different results.

[swambast]

So CrystalCPUID shows it as being at the clock it should be at. Try running it and CPU-Z at the same time, and see if they have different results.


That's only because the FSB is set at 226. Setting the FSB to 228 somehow makes the computer think it's a 1.6Ghz, and it gives performance as of a 1.6Ghz.

[totensiebush]

That's only because the FSB is set at 226. Setting the FSB to 228 somehow makes the computer think it's a 1.6Ghz, and it gives performance as of a 1.6Ghz.
We need to say what it says when FSB is set to 228