Upgraded memory and CPU - system runs fine but boots up *slower*!

Discussion in 'IBM' started by Chandler Bing, Feb 3, 2005.

  1. Hope there's a resident Dell Dimension 4500 expert around to help me
    out. I went to Powerleap.com which has a nice little interactive
    utility which examines your system and recommends upgrade options for
    your machine. As a result of using their recommendations, I upgraded
    from the old 1,6Ghz Williamette processor I had to the Northwood
    3.06Ghz which was the top end processor my 4500 apparently supports.
    At the same time, I upped my RAM from 512 megs to 1024 megs, which,
    again, is the limit the motherboard (D845EPT2 Rev AAA83422-105) will
    accept. I already had the latest BIOS (A04) on the machine so I didn't
    have to reflash it. When I fired up the machine after performing the
    upgrades, I began to sweat bullets because, while the POST information
    and RAID initialization flashed by at lightning speed, it took a
    looooong time for Windows to even begin to boot and from the time the
    initial Windows logo appeared to the appearance of the welcome screen
    there was a full 80 seconds of black screen! I was really
    disheartened, but once Windows finally did fully boot up, everything
    worked beautifully and the speed increase was breathtaking compared to
    what it was with the old processor. Maybe I should leave well enough
    alone and bear with the 2+ minute bootup, but common sense tells me
    that something must be wrong somewhere to cause an upgraded system to
    boot slower. I've fiddled with the BIOS boot settings, but no
    variations in the settings improve the bootup speed. My suspicion is
    that although the BIOS sees the new CPU just fine and also recognized
    the change from 400 to 533 in the FSB speed, it's struggling with the
    fact that the CPU has hyperthreading ability while the BIOS and board
    don't support HT. Now here's where my questions get real hairy...

    Dell offers a BIOS (A06) for a model 4500C which, from what I have
    been able to gather from what I've read, is a variation of the 4500
    marketed in Japan only. The info on the A06 BIOS states that one of
    its "fixes" specifically deals with the sporadic recognition of the
    2nd processor for the 3.06 CPU in hyperthreading mode. I am well aware
    that you can toast your motherboard (or at least the BIOS chip) if you
    flash the wrong BIOS onto it, but I'm *real* tempted to try the A06
    bios on my machine to see if it makes the slow boot go away and
    *maybe* even give me HT. How risky would that be? Does anyone know
    what the differences are between the 4500 and its Japanese cousin the

    As if I haven't already taxed your patience, here's some even hairier
    questions. On Intel's site, they offer 8 incremented BIOS versions for
    the D845EPT2 motherboard. The latest version (P08) disable
    hyperthreading for some reason, but an earlier version (P05) enabled
    HT and the next revision (P06) offered the option to enable or disable
    HT. I'm running XP Pro w/SP2, which I've read works well with HT while
    other versions of XP with or without SP1 often choke with HT. Intel
    warns that flashing their BIOS onto proprietary systems (like Dell)
    that use Intel boards might cause improper operation but I don't see
    any warnings about permanent damage as a possibility. So, again, I'm
    also real tempted to try one of the Intel BIOS flashes to see if, at
    the very least, the slow boot goes away, and at most, I wind up with
    an hyperthreading machine.Would I be playing with fire by doing so?

    Last, but not least, I upgraded the graphics on my machine last month
    with a Radeon 9600 All-In-Wonder w/128megs. By default, the BIOS sets
    something called the video or graphics "aperture" to 64 megs. After
    wading through other graphics-related messages on the web, I'm
    confused because some people say that the "aperture" setting needs to
    be set to the amount of RAM actually on your video card while others
    recommend setting the aperture to 256 megs even if you only have 128
    megs on your card. Can anyone clear up my confusion?

    Thanks in advance for being patient enough to read all this and for
    any help anyone can offer.
    Chandler Bing, Feb 3, 2005
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.