need help.

master-afmaster-af
edited May 2004 in Hardware
hi.
my buck sys:
P2XBL rev.D2 mobo
pentium III 450mhz 100fsb / 4.5multi
voodoo 3
vibra 128

memory:
1) pc 100 - 256mb
2) pc 125 - 64mb
3) pc 133 - 128mb

the pc133 is not ditected, only the pc100 and the pc125.
so in total i have only 320mb (shuld be 448mb)
what is the problem ?

allso, can i OC this sys ?

thenx.
gigabyte 7VAX rev1.1 , chipset of VIA KT400 , BIOS F9

AMD athlon xp 2000+ (Palomino) 12.5x144 = 1800MHz Water Cooling

2x256MB of DDR400(200) pc3200 TWINMOS

RADEON 9800 PRO (ATI)

Comments

  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited May 2004
    How many physical chips are on the 128mb stick?
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited May 2004
    Ok, base RAM of three different speeds is likely to cause more long-term problems than less of one speed.

    In theory you can run that combo, if all were 133 or 100 except for the 125 (which IS an OC'd PC100 using the faster modules used for PC100 mfr also), BUT, the CPU's base is 100 and ideal for that age of system is a 1:1 RAM base to CPU Base. I would pull the PC133 and try in another system, if it does not work there it is defective.

    Only way I have gotten this combo to work, and I do NOT know if it will work in YOUR system specifically, is to put then in teh following order:

    DIMM0 (possibly DIMM1 if lowest numbered DIMM slot is numbered DIMM 1): PC133 module
    DIMM1 (next higher number): PC125 module.
    DIMM2 (next higher number): PC100 module.

    If this order results in a no-boot then the PC133 is defective or damaged, about 70% probable. Only way to confirm totally is on another machine what has a motherboard that takes a PC133 per that motherboard's manual.

    IF the PC133 works this way, best way to OC would be to use all PC133 memory and OC base of CPU to about 115-125. That way, RAM is not pushed beyond max. Withotu very agressive cooling, the PII is unlikely to run at 533, have seen them run at 500 MHz with faster RAM modules. And run fairly stable. So yes, some OC possible, but probably not with that RAM combo you have now. Most PC100 generic RAM will not run at 1.33 times its rating.

    John D.-- who has done this, yes. A fairly long time ago, but it happened.
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited May 2004
    If this order results in a no-boot then the PC133 is defective or damaged

    Or it could just be that it's a high density ram module, and the board doesn't like it...
  • muddocktormuddocktor
    edited May 2004
    Geeky1 wrote:
    Or it could just be that it's a high density ram module, and the board doesn't like it...

    Right, Geeky! That's a BX chipset board, which won't read high density modules.
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited May 2004
    In that case, depending on the board, if it's a high density ram module, one of three things will (or won't, as the case may be) happen:

    1- It'll only see half the stick
    2- It won't see the stick at all
    3- It'll refuse to POST with the stick in it
  • master-afmaster-af
    edited May 2004
    but CPU-Z is ditecting the stick so...
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited May 2004
    that doesn't mean that the board doesn't like it
  • master-afmaster-af
    edited May 2004
    muddocktor wrote:
    Right, Geeky! That's a BX chipset board, which won't read high density modules.

    are you shur ?
    so i have to use only pc100 - pc125 ?

    thenx. (fastes forum) :thumbsup:
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited May 2004
    no, it means you can't use high density ram. How many chips are on the PC133 stick?
  • master-afmaster-af
    edited May 2004
    hi.

    i did som testings... alot of restarts :)
    first i took them all out and tryed them one by one. the resolts are:

    -the mobo can see all the sticks. but can see only 128mb on the 256mb stick.
    -i tryed all the combos posible, thes is the only combo that gave me 320mb.
    DIMM 1 = pc133 128mb (8 chips)
    DIMM 2 = pc100 256mb (8 chips, can see only 128mb)
    DIMM 3 = pc125 64mb (16 chips)

    -the pc100 256mb stick, is working good as a 128mb and its details are:
    INFINEON
    HYB39S256800AT-8
    GERMANY B S16133
    0010

    thenx. :thumbsup:
  • drasnordrasnor Starship Operator Hawthorne, CA Icrontian
    edited May 2004
    You can use high density RAM in a BX system, it's just that it'll only see half of it. AFAIK there is no PC100 that is high density, so the salesman was yanking your chain and sold you some PC133 as PC100. PC125 is odd, I've never heard of such a speed (though I have heard of PC150). In any case, I'd have to say no on the overclockng due to low quality of system components.

    The 440BX doesn't have PCI/AGP locks, and unless you've got a 1/4 frequency divider jumper on your motherboard your PCI will get too fast for most cards to handle at 133. Your Voodoo3 will not be able to handle the 2/3 multiplier at 133FSB, so you'll need to upgrade to a GeForce 2/3. Your best bet for RAM is getting some PC133 cas2 low-density modules, 3x256MB, 16 chips per module. Northbridge cooling will also be useful. At least lap your greenie and put some thermal grease on it (assuming you have a green Northbridge heatsink).

    -drasnor :fold:
  • master-afmaster-af
    edited May 2004
    drasnor wrote:
    You can use high density RAM in a BX system, it's just that it'll only see half of it. AFAIK there is no PC100 that is high density, so the salesman was yanking your chain and sold you some PC133 as PC100. PC125 is odd, I've never heard of such a speed (though I have heard of PC150). In any case, I'd have to say no on the overclockng due to low quality of system components.

    The 440BX doesn't have PCI/AGP locks, and unless you've got a 1/4 frequency divider jumper on your motherboard your PCI will get too fast for most cards to handle at 133. Your Voodoo3 will not be able to handle the 2/3 multiplier at 133FSB, so you'll need to upgrade to a GeForce 2/3. Your best bet for RAM is getting some PC133 cas2 low-density modules, 3x256MB, 16 chips per module. Northbridge cooling will also be useful. At least lap your greenie and put some thermal grease on it (assuming you have a green Northbridge heatsink).


    i can set the FSB to 133, and the pci/agp stay at oem.
    the pci/agp is going up as i up the FSB lil by lil, but when i got to 133 its go down buck to oem.
    so maybe it is posible after all ???



    -drasnor :fold:
  • drasnordrasnor Starship Operator Hawthorne, CA Icrontian
    edited May 2004
    If your motherboard supports it, you can keep the PCI frequency at the specified 33MHz at 133MHz FSB using a 1/4 divider. Not all 440BX boards have them, so check your manual.

    If you set your FSB to 133, your graphics card will be running at 89MHz, a 22MHz overclock. This is because the 440BX chipset only supports two AGP dividers: 1/1 and 2/3 (for 66MHz and 100MHz FSB respectively). I highly doubt your Voodoo3 can handle that speed. Good luck though.

    -drasnor :fold:
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited May 2004
    drasnor wrote:
    ...PC125 is odd, I've never heard of such a speed (though I have heard of PC150)...
    I've got a stick or two of PC125 ram floating around somewhere. It was the OC'er's friend in the days when a 100MHz FSB was king. :)
  • master-afmaster-af
    edited May 2004
    hi.

    i sacsesfuly run the sys on 124fsb / 31pci
    but when i tryed to run it on 133fsb / 33.25pci then it refused to boot.
    i dont know whay, the cpu seems like he can take it (low temp-34c)
    can it be the memory latency (3.3.3.) ?
    or somthing ?

    thenx. :)
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