8KNXP O/C issues (AGP voltage and more)

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

I have recently upgraded my system. Pertinent components are:

Gigabyte GA-8KNXP ver. 2.0 w/FH BIOS
Intel P4 2.8C CPU w/Thermalright SP-94 heatsink and 90mm Panaflo fan
1GB (2x512) Super Talent PC4000 (DDR500) memory
nVidia GeForce2 GTS graphics card (obviously not upgraded yet)
Adaptec 29160 U160 SCSI adapter (for hard drives)

BIOS Settings:

CPU Host Frequency - 240.5MHz (962.2 FSB; 3.3677 GHz)
Memory Freq. Formula - 2.0 (which means the memory and the CPU are
synchronous ... 1:1)
RAM - SPD settings (3-4-4-8)
Delayed Transaction - Enabled
PSB Parking - Enabled
Command Per Clock - Auto [disabled]
Fast Chip Select - Enabled
Dynamic Paging Mode - Auto [disabled]
Top Performance - Not enabled
RAM Voltage Control - +0.1v [net 2.6v, the specified value for the RAM
modules]
AGP Voltage Control - +0.3v
CPU Voltage Control - 1.5875v

Power Supply:

+3.3 rail yields 3.44
+5.0 rail yields 4.96
+12.0 rail yields 12.22

According to MBM, the power values stay constant (there is some
variation, but not much).

The system is stable (actually rock stable). The SP-94 heatsink is
awesome (45C max with Prime 95 ... starting at a base temp of 32C);
the CPU has definitely not reached it's overclock limit yet.

The issue I have is with RAM. When I put the system together (I put
the new MB into an existing system ... of course changing the chipset
drivers, etc), it was unstable. Windows XP Pro would randomly crash
(spontaneous reboot, not BSOD). After *much* experimentation (and
sending one of the RAM modules back to the mfr. to be tested; it was
fine), I determined that I could get stability by increasing the AGP
voltage ... and the higher I set the AGP voltage, the more I could
overclock. The RAM voltage is at stock (and anything higher causes
memory errors on MemTest86 and MS WINDIAG); nothing spectacular about
the CPU voltage (which so far has had no effect on overclocking, since
I haven't pushed the CPU to its limit).

Granted, 962.2 FSB with 1:1 isn't bad, but I think it can do better
(or at least the CPU can). The memory should be able to reach a
minimum of 1000FSB ... at least that is the spec.

My surprise here is that *AGP* voltage has been the key to
overclocking. Anyone know why? I know that the AGP card is tied to
memory by virtue of AGP Aperture. I haven't played with any of the
overclock settings for the video card (via the nVidia drivers). My
next upgrade item is a video card (MSI FX 5900XT) ... don't know
whether that will affect my ability to overclock. Unfortunately, I
can't turn the AGP voltage up any higher (it is at the max ... +.3),
so unless I can solve the AGP issue, I'm at the end of the line.

Comments?

Thanks
8 answers Last reply
More about 8knxp issues voltage more
  1. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    I think you have more to gain with a more aggressive memory setting than
    eeking out that last 100mhz of cpu speed. I'm at 240 also but my mem
    settings are 2.5 3, 3, 6.

    I don't know why the increase in voltage to the agp slot makes your system
    stable. I'm at stock voltage except for cpu (same as yours)and I'm rock
    solid as well. Maybe it's the GTS card somehow? I'm running a 9800pro.

    Thanks for the report on the HSF, the stock cooler on my 2.8 had done a
    great job, but it's time for an SP94 I see...my temps are MUCH higher than
    yours:-)

    Don

    "Squeeky" <nospam@yahoo.com> wrote in message
    news:5ei2d0h2u6fmhneuq0rhgukuhi9deevohj@4ax.com...
    > I have recently upgraded my system. Pertinent components are:
    >
  2. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    Don,

    Thanks for your response.

    Certainly, the conventional wisdom and practice was to spend a lot of
    time tweaking memory timings. However, see the following article from
    Tom's Hardware
    (http://www.tomshardware.com/firstlook/20040105/index.html). It (and
    other articles I have read) suggest greater improvement from
    increasing the FSB than from tweaking the timings. To get 100MHz of
    additional CPU speed (the number you mentioned), the FSB must go up by
    25 ... this will do more for performance than any possible fine-tuning
    of the timings. [Of course, if you can't raise the FSB any further,
    THEN you can fine-tune the timings.]

    Why did you stop at 240? What wall did you hit? Out of curiosity,
    what RAM are you using?

    As for the SP-94 ... I can't say enough. As I began writing this, I
    was using a CPU intensive program (100% for 30 minutes); most of the
    time the temp was 44C ... at one point it hit 45C. Am also using
    Arctic Silver II (not the latest or greatest, but it is what I happen
    to have in my toolbox). CPU heat is simply not a concern at the
    moment. [The best pricing is at http://www.svc.com ; San Jose, CA]

    * * * * * * * * * * * * * * * * * * * * * * * *

    On Thu, 17 Jun 2004 07:41:49 -0400, "M-Tech" <mechtechllc@yahoo.com>
    wrote:

    >I think you have more to gain with a more aggressive memory setting than
    >eeking out that last 100mhz of cpu speed. I'm at 240 also but my mem
    >settings are 2.5 3, 3, 6.
    >
    >I don't know why the increase in voltage to the agp slot makes your system
    >stable. I'm at stock voltage except for cpu (same as yours)and I'm rock
    >solid as well. Maybe it's the GTS card somehow? I'm running a 9800pro.
    >
    >Thanks for the report on the HSF, the stock cooler on my 2.8 had done a
    >great job, but it's time for an SP94 I see...my temps are MUCH higher than
    >yours:-)
    >
    >Don
    >
  3. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    I'd like to know a little more about the Thermalright SP-94 heatsink and
    90mm Panaflo fan. If accurate, your temperature readings are very
    impressive. My CPU temps typically run from 38-58 degrees C. Were you able
    to install the heatsink without removing the DSP2 daughter board or the DSP2
    fan? What about the northbridge fan? Any mounting problems there? Also, how
    quiet is this setup? My stock Intel fan seems to make a lot of racket!

    I've never been interested in over clocking and have stuck with most of the
    default BIOS settings in order to maximize stability and reliability. Even
    so, I've found this board to be a little flakey. When I first set it up I
    experienced persistent cold boot problems. Sometimes it would start up and
    run great. Then it would freeze up on start up and I'd have to re-boot once
    or twice to get it going. Occasionally, when it did start up, it would act
    very sluggish and task manager would show near maximum CPU usage with no
    applications running! Installed a high performance power supply but saw no
    improvement. I finally discovered that by turning off "Delayed Transaction"
    in the BIOS, all these problems went away. "D.T. Enabled" is one of the
    "Fail Safe Default" settings so I over looked this possibility for a long
    time. Lately I've noticed a new intermittent problem. Sometimes when I boot
    up or bring the machine out of hibernation, I hear a fast clicking noise
    that sounds like an impending bearing failure in one of the case fans. The
    noise, however, comes from one or the other of the Plextor DVD drives. When
    this happens, the drive becomes unresponsive and the PC runs at a snails
    pace. Re-booting does not solve the problem! I have to turn it off
    completely and restart to get things up and running again. If anyone has any
    thoughts on this problem I'd like to hear from you!
    --
    Giga-Byte GA-8KNXP v.2.0 Motherboard w/ Award BIOS v. FH
    Pentium 4 2.8 w/800 MHz FSB Intel 875P Chipset
    1GB Kingston HyperX PC3500 (@ 2.6v)
    2 Western Digital 120 GB SATA Hard Drives
    RAID 1 on Intel ICH5R (v3.5.0.2568)
    MSI FX5600 - AGP 8X 128MB DDR Video Card (Nvidia v.52.16)
    Leadtek WinFast 2000 TV/FM PCI Multi-Media card
    U.S. Robotics 56K V90 PCI Modem
    Plextor PX-708A 8X DVD-RW (IDE 2 Master)
    Plextor PX-116A DVD-ROM (IDE 2 Slave)
    Teac 1.44 3.5" Floppy Disk Drive
    Creative Labs Audigy II Platinum Sound card
    Enermatic "Noistaker" 470 watt ATX Power Supply
    Win XP Pro SP-1 O.E.M.

    "Squeeky" <nospam@yahoo.com> wrote in message
    news:5ei2d0h2u6fmhneuq0rhgukuhi9deevohj@4ax.com...
    > I have recently upgraded my system. Pertinent components are:
    >
    > Gigabyte GA-8KNXP ver. 2.0 w/FH BIOS
    > Intel P4 2.8C CPU w/Thermalright SP-94 heatsink and 90mm Panaflo fan
    > 1GB (2x512) Super Talent PC4000 (DDR500) memory
    > nVidia GeForce2 GTS graphics card (obviously not upgraded yet)
    > Adaptec 29160 U160 SCSI adapter (for hard drives)
    >
    > BIOS Settings:
    >
    > CPU Host Frequency - 240.5MHz (962.2 FSB; 3.3677 GHz)
    > Memory Freq. Formula - 2.0 (which means the memory and the CPU are
    > synchronous ... 1:1)
    > RAM - SPD settings (3-4-4-8)
    > Delayed Transaction - Enabled
    > PSB Parking - Enabled
    > Command Per Clock - Auto [disabled]
    > Fast Chip Select - Enabled
    > Dynamic Paging Mode - Auto [disabled]
    > Top Performance - Not enabled
    > RAM Voltage Control - +0.1v [net 2.6v, the specified value for the RAM
    > modules]
    > AGP Voltage Control - +0.3v
    > CPU Voltage Control - 1.5875v
    >
    > Power Supply:
    >
    > +3.3 rail yields 3.44
    > +5.0 rail yields 4.96
    > +12.0 rail yields 12.22
    >
    > According to MBM, the power values stay constant (there is some
    > variation, but not much).
    >
    > The system is stable (actually rock stable). The SP-94 heatsink is
    > awesome (45C max with Prime 95 ... starting at a base temp of 32C);
    > the CPU has definitely not reached it's overclock limit yet.
    >
    > The issue I have is with RAM. When I put the system together (I put
    > the new MB into an existing system ... of course changing the chipset
    > drivers, etc), it was unstable. Windows XP Pro would randomly crash
    > (spontaneous reboot, not BSOD). After *much* experimentation (and
    > sending one of the RAM modules back to the mfr. to be tested; it was
    > fine), I determined that I could get stability by increasing the AGP
    > voltage ... and the higher I set the AGP voltage, the more I could
    > overclock. The RAM voltage is at stock (and anything higher causes
    > memory errors on MemTest86 and MS WINDIAG); nothing spectacular about
    > the CPU voltage (which so far has had no effect on overclocking, since
    > I haven't pushed the CPU to its limit).
    >
    > Granted, 962.2 FSB with 1:1 isn't bad, but I think it can do better
    > (or at least the CPU can). The memory should be able to reach a
    > minimum of 1000FSB ... at least that is the spec.
    >
    > My surprise here is that *AGP* voltage has been the key to
    > overclocking. Anyone know why? I know that the AGP card is tied to
    > memory by virtue of AGP Aperture. I haven't played with any of the
    > overclock settings for the video card (via the nVidia drivers). My
    > next upgrade item is a video card (MSI FX 5900XT) ... don't know
    > whether that will affect my ability to overclock. Unfortunately, I
    > can't turn the AGP voltage up any higher (it is at the max ... +.3),
    > so unless I can solve the AGP issue, I'm at the end of the line.
    >
    > Comments?
    >
    > Thanks
  4. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    So far as I know, the temps I reported are accurate. I use
    Motherboard Monitor, and have the temps configured for the 8KNXP MB.

    When I first put the system together, I used the stock Intel HSF.
    Temps ranges from 32C to 57C ... more or less consistent with your
    results. The SP-94 does not interfere with the DSP2 (or its fan),
    though I have since removed that component as I couldn't establish any
    benefit for it. The heatsink does not touch the NB (or its fan). The
    SP-94 does not come with a fan ... you have to buy one separately. I
    have the Panaflo high speed fan, and I believe it is quiet ... of
    course, the medium speed would be quieter. You have to remove the MB
    to install the SP-94 (because it requires a brace on the backside of
    the MB). You can download installation instructions from the
    Thermalright website (before you buy).

    I was amazed by the performance of this heatsink!

    Having said all of that, I don't believe that your reported problems
    will be helped by the SP-94; they don't sound like HSF issues. And if
    you are not overclocking, you don't need a new $55 toy. If I had to
    guess, I would say the "Delayed Transaction" issue is a result of your
    RAM ... faster RAM, and the issue may go away. But it sounds like you
    are more interested in stability than speed, so the present solution
    is fine.

    FYI, I, too, have a Plextor 708A ... no noise.

    * * * * * * * * * * * * * * * * * * * * * * *

    On Fri, 18 Jun 2004 18:04:33 GMT, "Kilgore Trout Jr"
    <someguy@earthlink.net> wrote:

    >I'd like to know a little more about the Thermalright SP-94 heatsink and
    >90mm Panaflo fan. If accurate, your temperature readings are very
    >impressive. My CPU temps typically run from 38-58 degrees C. Were you able
    >to install the heatsink without removing the DSP2 daughter board or the DSP2
    >fan? What about the northbridge fan? Any mounting problems there? Also, how
    >quiet is this setup? My stock Intel fan seems to make a lot of racket!
    >
    >I've never been interested in over clocking and have stuck with most of the
    >default BIOS settings in order to maximize stability and reliability. Even
    >so, I've found this board to be a little flakey. When I first set it up I
    >experienced persistent cold boot problems. Sometimes it would start up and
    >run great. Then it would freeze up on start up and I'd have to re-boot once
    >or twice to get it going. Occasionally, when it did start up, it would act
    >very sluggish and task manager would show near maximum CPU usage with no
    >applications running! Installed a high performance power supply but saw no
    >improvement. I finally discovered that by turning off "Delayed Transaction"
    >in the BIOS, all these problems went away. "D.T. Enabled" is one of the
    >"Fail Safe Default" settings so I over looked this possibility for a long
    >time. Lately I've noticed a new intermittent problem. Sometimes when I boot
    >up or bring the machine out of hibernation, I hear a fast clicking noise
    >that sounds like an impending bearing failure in one of the case fans. The
    >noise, however, comes from one or the other of the Plextor DVD drives. When
    >this happens, the drive becomes unresponsive and the PC runs at a snails
    >pace. Re-booting does not solve the problem! I have to turn it off
    >completely and restart to get things up and running again. If anyone has any
    >thoughts on this problem I'd like to hear from you!
  5. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    Don,

    What do you think of the 9800 Pro (and its drivers)? I hadn't
    considered it because I got jaded on ATI's then-poor drivers about 10
    years ago. But I can actually buy a 9800 Pro (128MB 256-bit) for $176
    (OEM) ... less than the nVidia 5900XT (and the 9800 Pro apparently has
    materially better performance).

    * * * * * * * * * * * * * * * * * * * * * * *

    On Thu, 17 Jun 2004 07:41:49 -0400, "M-Tech" <mechtechllc@yahoo.com>
    wrote:

    >I think you have more to gain with a more aggressive memory setting than
    >eeking out that last 100mhz of cpu speed. I'm at 240 also but my mem
    >settings are 2.5 3, 3, 6.
    >
    >I don't know why the increase in voltage to the agp slot makes your system
    >stable. I'm at stock voltage except for cpu (same as yours)and I'm rock
    >solid as well. Maybe it's the GTS card somehow? I'm running a 9800pro.
    >
    >Thanks for the report on the HSF, the stock cooler on my 2.8 had done a
    >great job, but it's time for an SP94 I see...my temps are MUCH higher than
    >yours:-)
    >
    >Don
    >
    >"Squeeky" <nospam@yahoo.com> wrote in message
    >news:5ei2d0h2u6fmhneuq0rhgukuhi9deevohj@4ax.com...
    >> I have recently upgraded my system. Pertinent components are:
    >>
    >
  6. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    I have not had a single issue with the 9800pro or the drivers.

    She's been rock solid:-)

    Don

    "Squeeky" <nospam@yahoo.com> wrote in message
    news:ugp7d0lr7cl80ktmd0d4p0bc79fajea98g@4ax.com...
    > Don,
    >
    > What do you think of the 9800 Pro (and its drivers)? I hadn't
    > considered it because I got jaded on ATI's then-poor drivers about 10
    > years ago. But I can actually buy a 9800 Pro (128MB 256-bit) for $176
    > (OEM) ... less than the nVidia 5900XT (and the 9800 Pro apparently has
    > materially better performance).
    >
    > * * * * * * * * * * * * * * * * * * * * * * *
    >
    > On Thu, 17 Jun 2004 07:41:49 -0400, "M-Tech" <mechtechllc@yahoo.com>
    > wrote:
    >
    > >I think you have more to gain with a more aggressive memory setting than
    > >eeking out that last 100mhz of cpu speed. I'm at 240 also but my mem
    > >settings are 2.5 3, 3, 6.
    > >
    > >I don't know why the increase in voltage to the agp slot makes your
    system
    > >stable. I'm at stock voltage except for cpu (same as yours)and I'm rock
    > >solid as well. Maybe it's the GTS card somehow? I'm running a 9800pro.
    > >
    > >Thanks for the report on the HSF, the stock cooler on my 2.8 had done a
    > >great job, but it's time for an SP94 I see...my temps are MUCH higher
    than
    > >yours:-)
    > >
    > >Don
    > >
    > >"Squeeky" <nospam@yahoo.com> wrote in message
    > >news:5ei2d0h2u6fmhneuq0rhgukuhi9deevohj@4ax.com...
    > >> I have recently upgraded my system. Pertinent components are:
    > >>
    > >
    >
  7. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    Thanks Squeeky. Yah, I don't think my CPU temperatures are excessive or have
    anything to do with the few problems I've had with this board. I am
    interested in trying to make it a little more quiet and have been looking at
    various heatsink/fan options. I hadn't heard of the SP-94 and appreciate
    your comments. I think I will also follow your lead and try removing the
    DSP2 unit. Nobody seems to be convinced that it serves any useful purpose
    and it is one more source of heat, fan noise and potential problems.

    Don't know what to think about the DT problem. Paid extra for a matched pair
    of Kingston 500 MB PC3500 RAM to insure stable operation, then had to dumb
    down the BIOS settings to get them to run reliably. Memtest86 runs for hours
    with no errors and I don't have any real performance issues so I guess I
    don't have too much to complain about. :^)


    "Squeeky" <nospam@yahoo.com> wrote in message
    news:04o7d0p01vmnp9t02muid01k2tbcj7mbf7@4ax.com...
    > So far as I know, the temps I reported are accurate. I use
    > Motherboard Monitor, and have the temps configured for the 8KNXP MB.
    >
    > When I first put the system together, I used the stock Intel HSF.
    > Temps ranges from 32C to 57C ... more or less consistent with your
    > results. The SP-94 does not interfere with the DSP2 (or its fan),
    > though I have since removed that component as I couldn't establish any
    > benefit for it. The heatsink does not touch the NB (or its fan). The
    > SP-94 does not come with a fan ... you have to buy one separately. I
    > have the Panaflo high speed fan, and I believe it is quiet ... of
    > course, the medium speed would be quieter. You have to remove the MB
    > to install the SP-94 (because it requires a brace on the backside of
    > the MB). You can download installation instructions from the
    > Thermalright website (before you buy).
    >
    > I was amazed by the performance of this heatsink!
    >
    > Having said all of that, I don't believe that your reported problems
    > will be helped by the SP-94; they don't sound like HSF issues. And if
    > you are not overclocking, you don't need a new $55 toy. If I had to
    > guess, I would say the "Delayed Transaction" issue is a result of your
    > RAM ... faster RAM, and the issue may go away. But it sounds like you
    > are more interested in stability than speed, so the present solution
    > is fine.
    >
    > FYI, I, too, have a Plextor 708A ... no noise.
    >
    > * * * * * * * * * * * * * * * * * * * * * * *
    >
    > On Fri, 18 Jun 2004 18:04:33 GMT, "Kilgore Trout Jr"
    > <someguy@earthlink.net> wrote:
    >
    > >I'd like to know a little more about the Thermalright SP-94 heatsink and
    > >90mm Panaflo fan. If accurate, your temperature readings are very
    > >impressive. My CPU temps typically run from 38-58 degrees C. Were you
    able
    > >to install the heatsink without removing the DSP2 daughter board or the
    DSP2
    > >fan? What about the northbridge fan? Any mounting problems there? Also,
    how
    > >quiet is this setup? My stock Intel fan seems to make a lot of racket!
    > >
    > >I've never been interested in over clocking and have stuck with most of
    the
    > >default BIOS settings in order to maximize stability and reliability.
    Even
    > >so, I've found this board to be a little flakey. When I first set it up I
    > >experienced persistent cold boot problems. Sometimes it would start up
    and
    > >run great. Then it would freeze up on start up and I'd have to re-boot
    once
    > >or twice to get it going. Occasionally, when it did start up, it would
    act
    > >very sluggish and task manager would show near maximum CPU usage with no
    > >applications running! Installed a high performance power supply but saw
    no
    > >improvement. I finally discovered that by turning off "Delayed
    Transaction"
    > >in the BIOS, all these problems went away. "D.T. Enabled" is one of the
    > >"Fail Safe Default" settings so I over looked this possibility for a long
    > >time. Lately I've noticed a new intermittent problem. Sometimes when I
    boot
    > >up or bring the machine out of hibernation, I hear a fast clicking noise
    > >that sounds like an impending bearing failure in one of the case fans.
    The
    > >noise, however, comes from one or the other of the Plextor DVD drives.
    When
    > >this happens, the drive becomes unresponsive and the PC runs at a snails
    > >pace. Re-booting does not solve the problem! I have to turn it off
    > >completely and restart to get things up and running again. If anyone has
    any
    > >thoughts on this problem I'd like to hear from you!
    >
  8. Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

    I have a AIW9800 Pro on a 8KNXP and have had no problems with the card or
    the drivers. I also swapped the stock HSF for a SP-94 and cannot get my temp
    above 49 Celsius when playing Unreal 2004.
    "M-Tech" <mechtechllc@yahoo.com> wrote in message
    news:poidndTTZL10EkndRVn-gw@comcast.com...
    > I have not had a single issue with the 9800pro or the drivers.
    >
    > She's been rock solid:-)
    >
    > Don
    >
    > "Squeeky" <nospam@yahoo.com> wrote in message
    > news:ugp7d0lr7cl80ktmd0d4p0bc79fajea98g@4ax.com...
    > > Don,
    > >
    > > What do you think of the 9800 Pro (and its drivers)? I hadn't
    > > considered it because I got jaded on ATI's then-poor drivers about 10
    > > years ago. But I can actually buy a 9800 Pro (128MB 256-bit) for $176
    > > (OEM) ... less than the nVidia 5900XT (and the 9800 Pro apparently has
    > > materially better performance).
    > >
    > > * * * * * * * * * * * * * * * * * * * * * * *
    > >
    > > On Thu, 17 Jun 2004 07:41:49 -0400, "M-Tech" <mechtechllc@yahoo.com>
    > > wrote:
    > >
    > > >I think you have more to gain with a more aggressive memory setting
    than
    > > >eeking out that last 100mhz of cpu speed. I'm at 240 also but my mem
    > > >settings are 2.5 3, 3, 6.
    > > >
    > > >I don't know why the increase in voltage to the agp slot makes your
    > system
    > > >stable. I'm at stock voltage except for cpu (same as yours)and I'm
    rock
    > > >solid as well. Maybe it's the GTS card somehow? I'm running a
    9800pro.
    > > >
    > > >Thanks for the report on the HSF, the stock cooler on my 2.8 had done a
    > > >great job, but it's time for an SP94 I see...my temps are MUCH higher
    > than
    > > >yours:-)
    > > >
    > > >Don
    > > >
    > > >"Squeeky" <nospam@yahoo.com> wrote in message
    > > >news:5ei2d0h2u6fmhneuq0rhgukuhi9deevohj@4ax.com...
    > > >> I have recently upgraded my system. Pertinent components are:
    > > >>
    > > >
    > >
    >
    >
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