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  1. #1
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    Question Crucial PC2100: Max FSB CAS2/CAS2.5/SPD?

    I'm running on SPD/Normal/1t Disabled, and have reached 180 FSB X 12 (stock RAM voltage) - with a few IE errors, fine at 175. Wonder if anyone has better settings suggestions?

    Bottomline, how much FSB is it worth giving up to get better RAM timing? My system seems a zinger (to me) as is, but always looking upward.
    Last edited by xroyal; 07-04-2003 at 12:25 PM.

  2. #2
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    There's enough factors involved in what you're asking that there is simply no way to know without benchmarking your settings yourself.

    In my case, I can get good benchmarks but unstable operation at timings 15-4-4-(Cas)3 for 200FSB on crucial PC2700, but I don't like an unstable system, so I drop down to 190FSB and tighten the timings to 11-3-3-2.5. There's very little difference in timings for me, and ultimately FSB brings me the best benchmarks. Probably due to my RAM being relatively poor at overclocking.

    Running stock RAM voltage and trying to get high FSB is a bad idea. Raise the RAM voltage and you will have more room. It's not gonna hurt anything. Go for 2.7 or 2.8v, either one.
    ...Does anybody else feel like Congress simply bailed themselves out? Isn't that what they really mean by a bailout?

  3. #3
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    Many thanks, and guess I've just got to experiment. I've hit 180 FSB, about the best I've heard on PC 2100. I'll D/L Sandra, and play with the numbers. Thanks again

  4. #4
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    I took it off SPD and just changed to 4 way interleave and got errors at 175 FSB. So, among other experiments, boosted voltage to 1.70v 178x12=2142 at SPD.

    My Sandra scores went from:

    2341/2146 175x11.5 1.6v CPU at SPD to
    2364/2201 178x12 1.7v CPU at SPD.

    Personally, not sure that minor increase worth the voltage boost (tho CPU only 39C idle). I made an error buying PC2100, but perhaps that's the way one learns. The good part is it performs slightly above PC2700 at cl2.5 for 333 chipset at either of above settings. At least that's the conclusion my sleepy head gets so far.

    EDIT: I just set it back to 175x11.5 1.575V CPU, and temps dropped to 36C (72F room temp). Performance is fine, and, w/o any other suggestions, think I'll sit here till I get really better RAM to go with an nf2 chipset (maybe that Soltek or other single channel model which is outperforming dual channel Asus nf2).
    Last edited by xroyal; 07-07-2003 at 02:40 PM.

  5. #5
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    Boy, this experimenting get's in your blood.

    Now at 190 FSB x 10 and Sandra jumped to 2657/2397.

    Now to let it run a bit to see if increased bandwidth worth the drop of 200 MHZ?

    Now to have breakfast 3 hours late!

  6. #6
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    These are using the same memory modules:

    In this SN45G2

    Cas2.0 is 155 @ 2.6
    Cas2.5 is 180 @ 2.6
    Haven't tried cas 3.0
    Haven't tried SPD

    I can raise Voltage to 2.7, but it makes my computer unstable (probably suckign too much juice from that 200Watt Enhance)

    In my old AT7E with Enermax 300Watt

    Cas2.0 166 @ 2.75
    Cas2.5 200 @ 2.75
    No Cas3.0
    Never tried SPD

    All were stable adn able to run 3dmark, prime95, etc.
    | Shuttle SN85G4 | Athlon64 3200+ | 2x512MB Corsair Value PC2700 @ 200MHz |
    | ATI Radeon 9800 "Pro" (380/318) | SB Audigy 2 | Seagate 7200.7 120GB | Liteon LDW-401S DVD+RW |
    | Several Mods | Pictures (Updated 03/05/2004) |

  7. #7
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    at 180fsb... i can hit 2.5-2-2-5, running 2.9v on my 8rda (although my bios says its only feeding it 2.83v...).

    I've very happy with this board... the memory can be pushed even farther at SPD timings... but I need a VDD mod on my 8rda :\

  8. #8
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    Originally posted by xroyal
    Boy, this experimenting get's in your blood.

    Now at 190 FSB x 10 and Sandra jumped to 2657/2397.

    Now to let it run a bit to see if increased bandwidth worth the drop of 200 MHZ?

    Now to have breakfast 3 hours late!
    on my 8rda (nforce-2; dual channel), my crucial pc2100 at 180fsb (2.5-2-2-5) gets much higher speed reports in sandra... about 2850/2750.

  9. #9
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    I'll run sandra later...

    update:

    2.5 11-2-2 175FSB

    with AIM, Creative Thingy, Antivirus, MBM 5.0, IE, Remote wonder

    2529/2424 (Id say thats low.)

    Without all those above programs

    2724/2608 (Much better)
    Last edited by vck6v3; 07-11-2003 at 01:17 AM.
    | Shuttle SN85G4 | Athlon64 3200+ | 2x512MB Corsair Value PC2700 @ 200MHz |
    | ATI Radeon 9800 "Pro" (380/318) | SB Audigy 2 | Seagate 7200.7 120GB | Liteon LDW-401S DVD+RW |
    | Several Mods | Pictures (Updated 03/05/2004) |

  10. #10
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    Thanks guys!

    Believe you're both running nf2s, and that's what I'll have soon.

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