OC'ing old school Asus P4S800D-X

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Found a 3.4GHz 478pin Prescott and have pushed it to 3.6GHz stable.
Will run at 3.7GHz but got blue screen after running for a few hours so I  
backed it off.
Anyone see any room for improvement with this system?

    Operating System                              Microsoft Windows Vista  
Ultimate 6.0.6002 (Vista RTM)


    CPU Properties:
      CPU Type                                          Intel Pentium 4
      CPU Alias                                         Prescott
      CPU Stepping                                      D0
      Engineering Sample                                No
      CPUID CPU Name                                    Intel(R) Pentium(R)  
4 CPU 3.40GHz
      CPUID Revision                                    00000F34h

CPU Speed:
      CPU Clock                                         3604.3 MHz  
(original: 3400 MHz, overclock: 6%)
      CPU Multiplier                                    17x
      CPU FSB                                           212.0 MHz  
(original: 200 MHz, overclock: 6%)
      Memory Bus                                        212.0 MHz
      DRAM:FSB Ratio                                    1:1

    CPU Cache:
      L1 Trace Cache                                    12K Instructions
      L1 Data Cache                                     16 KB
      L2 Cache                                          1 MB  (On-Die, ECC,  
ATC, Full-Speed)

    Motherboard Properties:
      Motherboard ID  
63-0602-009999-00101111-061506-SIS655FX$A0149001_BIOS DATE: 06/15/06  
11:15:19 VER: 08.00.09
      Motherboard Name                                  Asus P4S800D-X  (5  
PCI, 1 AGP, 4 DDR DIMM, Audio, LAN)

    Chipset Properties:
      Motherboard Chipset
      North Bridge                                      SiS 655FX
      Supported FSB Speeds                              FSB400, FSB533,  
      Supported Memory Types                            DDR-200 SDRAM,  
      Revision                                          50

    Memory Controller:
      Type                                              Dual Channel  
      Active Mode                                       Dual Channel  
      Memory Timings                                    3-5-5-9  
      DIMM1: Micron 16VDDT12864AG40BDB                  1 GB PC3200 DDR  
SDRAM  (3.0-3-3-8 @ 200 MHz)  (2.5-3-3-7 @ 166 MHz)  (2.0-2-2-6 @ 133 MHz)
      DIMM2: Samsung M3 68L6523CUS-CCC                  512 MB PC3200 DDR  
SDRAM  (3.0-3-3-8 @ 200 MHz)  (2.5-3-3-7 @ 166 MHz)
      DIMM3: Micron 16VDDT12864AG40BDB                  1 GB PC3200 DDR  
SDRAM  (3.0-3-3-8 @ 200 MHz)  (2.5-3-3-7 @ 166 MHz)  (2.0-2-2-6 @ 133 MHz)
      DIMM4: Micron 8VDDT6464AG-40BD2                   512 MB PC3200 DDR  
SDRAM  (3.0-3-3-8 @ 200 MHz)  (2.5-3-3-7 @ 166 MHz)  (2.0-2-2-6 @ 133 MHz)

      AGP Controller:
      AGP Version                                       3.05
      AGP Status                                        Enabled
      AGP Device                                        ATI All-in-Wonder  
      AGP Aperture Size                                 128 MB
      Supported AGP Speeds                              1x, 2x, 4x, 8x
      Current AGP Speed                                 8x
      Fast-Write                                        Not Supported
      Side Band Addressing                              Supported, Enabled

Graphics Processor Properties:
      Video Adapter                                     ATI All-in-Wonder  
      GPU Code Name                                     R420  (AGP 8x 1002 /  
4A4B, Rev 00)
      GPU Clock                                         500 MHz  (original:  
500 MHz)
      Memory Clock                                      500 MHz  (original:  
500 MHz)


Re: OC'ing old school Asus P4S800D-X

Luvrsmel wrote:
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Quoted text here. Click to load it

I see only a three phase regulator on that motherboard.


Place a finger on the MOSFETs and coils, near the CPU socket.
If they're getting hot, don't overclock too much further.
If pushed far enough, MOSFETs have their own SOA and version
of thermal runaway.

I have one system here, that when I overclocked it, the
regulator circuits near the CPU socket were getting too hot
and I had to back off.


When you overclock, you generally need a bit more VCore to do it.
Does your motherboard support VCore adjustment ?

I checked the manual, and don't see an adjustment for it.

You might need a "volt mod" for VCore, or, figure out how
to change the VID code being sent to the regulator.

You would also need to research, how much additional VCore,
is safe for a Prescott. I don't have a number in my head for that.

On an enthusiast motherboard, VCore can sometimes be adjusted
at the BIOS level (boost type setting).

VCore voltage, and max frequency, go hand in hand. You will
get a certain amount of overclock, without adjusting Vcore.
To go further than that level, you need more VCore.


On my Asrock board, I did a volt mod, and that boosted the
voltage when I needed it. The voltage regulator in that case,
had an offset feature, so the mod was not too hard to do.


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