Results 1 to 4 of 4

Thread: ram cpu and bios

  1. #1
    Registered User
    Join Date
    Jan 2008
    0 times in 0 posts
    • peted347's system
      • Motherboard:
      • Asus P4C800E Deluxe
      • CPU:
      • Intel P4 3.2 northwood
      • Memory:
      • Corsair xms 3200pt 2x512
      • Storage:
      • 2x Seagate Barracuda 7200.9 ultra ata in raid 0
      • Graphics card(s):
      • ATI 9800xt
      • PSU:
      • Thermaltake 750w toughpower Coolermaster 500w exteme power
      • Case:
      • raidmax alien

    ram cpu and bios

    Hi I have a long standing problem with a system I put together a few years back. It is very unstable and after adding new cooling for cpu and vga and a new psu. I am still running into problems , so any shoves in the right direction would be a great help. A friend suggested running memtest to eliminate ram.This is where it all gets confusing. I have a matched pair of corsair 3200pt 512 sticks. When running memtest at default speeds the system just reboots after a few seconds. Corsair told me to set the voltage to 2.75 and the timings at 3-3-3-8 everything else in bios to auto and disable legacy usb. Still constant reboots. I have seen that my MB is very picky over ram but I am confused as to why when I under clock the cpu with the divider and fbs speed the memory runs ( both sticks and individually) through memtest with no errors. Any thoughts????? I'll post my bios settings and hopefully someone can point something out.
    AI overclock ....Manual
    CPU ex freq......200
    Dram freq.......400
    CPU vcore.........1.55
    DDR voltage.......2.75
    AGP voltage.....1.50
    Performance mode..........standard
    cpuid max value.........disabled ( its x16 but locked on the 3.2 northwood so i read)
    Hyper threading......enabled
    spd timing.....disabled
    RAS# to CAS# delay....3
    Precharge delay......8
    Burst length............8 (tried 4 too)
    Dram idle
    Dram refresh
    Graphic adapter.................AGP/PCI
    Graphics apeture size.........128 (tried 64 too)
    Spread Spectrum...........disabled (tried enabled)
    ICH delayed transaction.....enabled (tried disabled ).

    i hope this helps point anything out. thanks in advance

  2. #2
    Admin team peterb's Avatar
    Join Date
    Aug 2005
    3,403 times in 2,693 posts
    • peterb's system
      • Motherboard:
      • Nascom 2
      • CPU:
      • Z80B
      • Memory:
      • 48K 8 bit memory on separate card
      • Storage:
      • Audio cassette tape - home built 5.25" floppy drive
      • Graphics card(s):
      • text output (composite video)
      • PSU:
      • Home built
      • Case:
      • Home built
      • Operating System:
      • Nas-sys
      • Monitor(s):
      • 12" monocrome composite video input
      • Internet:
      • No networking capability on this machine

    Re: ram cpu and bios

    I think I'd ditch the memory and try a different make. You might try setting performance acceleration to manual but I think the problem is memory. It might be worth seeing if you have the latest BIOS (September 05 I think from the Asus website, if not, try reflashing the BIOS (having underclocked it to get it stable)
    Last edited by peterb; 28-01-2008 at 12:16 PM.

    Been helped or just 'Like' a post? Use the Thanks button!
    My broadband speed - 750 Meganibbles/minute

  3. #3
    Join Date
    Dec 2007
    5 times in 5 posts

    Re: ram cpu and bios

    Lowering the FSB reduces the speed at which the memory has to work. All latency settings specify the number of clock cycles the ram has to do an operation. Therefore, when you reduce the FSB you effectively increase the latency. Reduce FSB by 20% and you effectively increase latency by 20%.

    Therefore, if it runs smoothly at a lower FSB, I would suggest you try returning to the FSB you want, but relax the timings on your ram. You can increase latencies as much as you like without causing damage. If that does not give you stability then as you say your mobo may just be being picky. I'm thinking 5-5-5-10 as a starting guess.

  4. #4
    Resident Hexus Folder Golden Dragoon's Avatar
    Join Date
    May 2006
    North West
    88 times in 73 posts
    • Golden Dragoon's system
      • Motherboard:
      • Gigabyte GA-990FXA-UD5
      • CPU:
      • 1045T X6@ 4.0ghz
      • Memory:
      • 8GB Corsair Vengeance
      • Storage:
      • 64GB Crucial M4 + 500GB & 2TB Deskstars
      • Graphics card(s):
      • GTX 460
      • PSU:
      • XFX 650W
      • Case:
      • Akasa Infiniti
      • Operating System:
      • 7 + OS X

    Re: ram cpu and bios

    Quote Originally Posted by threepe View Post
    I'm thinking 5-5-5-10 as a starting guess.

    With it being DDR1 3-3-3-8 should be fine, DDR1 has tighter latencys than DDR2
    Though saying that, your motherboard should auto detect the corect settings from the spd (try setting spd timing to enable again), you could try relaxing the settings by a half or full clock on the following settings and see if that helps:

    CAS#..... 3.5 - 4
    RAS#..... 3.5 - 4
    RAS# to CAS# delay.... 3.5 - 4
    Precharge delay...... 8 - 10

    If not and your ram still works as expected at a lower than stock frequency, then it is likely that it is a faulty pair, and dependant on the warantee you should see if you can get a replacement.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Will 4Gig Ram Work?
    By qkiani in forum Help! Quick Relief From Tech Headaches
    Replies: 8
    Last Post: 18-08-2008, 07:06 PM
  2. C2D Overclocking Guide for Beginners
    By Clunk in forum PC Hardware and Components
    Replies: 908
    Last Post: 17-06-2008, 07:00 PM
  3. Asus p5n-e SLI full tips tweaks and overclock guide
    By kinnth in forum Help! Quick Relief From Tech Headaches
    Replies: 1
    Last Post: 22-11-2007, 05:02 PM
  4. P5K Deluxe: Upgraded the CPU, now not booting with 2 sticks of RAM!
    By benc85 in forum PC Hardware and Components
    Replies: 24
    Last Post: 22-08-2007, 07:17 PM
  5. BIos won't retain CPU settings :mad:
    By john-boi in forum PC Hardware and Components
    Replies: 4
    Last Post: 30-08-2005, 11:57 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts