Corsair XMS

abhi63abhi63 UK, Leeds
edited August 2004 in Hardware
Hi,

I just bought myself 2 x 256MB PC3200 Corsair XMS :rockon: for Dual Channel.

The model number is CMX256A-3200C2PT.

How much can I overclock these?

What are the best timings I should use?

Will I need to change the RAM Voltage?

Will it improve overclocking with my XP-M 2400?

Please answer as many questions as you can!

Thanks in advance.

Comments

  • ThraxThrax 🐌 Austin, TX Icrontian
    edited July 2004
    How much can I overclock these?
    Impossible to tell.

    What are the bst timings I should use?
    2/2/2/11 but you may have to run 2/3/2/11 if it's a newer version of the 3200C2 line.

    Will I need to change the RAM Voltage?
    Depends how high you wanter to overclock.

    Will it improve overclocking with my XP-M 2400?
    Significantly.
  • muddocktormuddocktor
    edited July 2004
    Thrax pretty much threw a blanket coverage on your questions, abhi63. I agree with everything he posted. :thumbsup:
  • abhi63abhi63 UK, Leeds
    edited July 2004
    Thanks for your answers! :thumbsup:

    But I just got an offer to upgrade to Corsair XMS PC3700 or PC4000. ;D

    The timings on both are 3-4-4-8. But it does 467Mhz. Is it better than my PC3200 with timings 2-3-2-6?

    Is it better to have more relaxed timings and more MHz, or less Mhz and faster timings?

    Please answer as many questions as you can. :thumbsup:

    Thanks in advance.
  • ThraxThrax 🐌 Austin, TX Icrontian
    edited July 2004
    There's somewhat of a crossover point. There's a point where slower clockspeed and faster timings becomes slower than a high clockspeed and slow timings.

    You can only find it by benchmarking.
  • abhi63abhi63 UK, Leeds
    edited August 2004
    I've just stumbled upon the legendary BH-5 chips in the form of 2 x 256MB WINBOND PC3200, model number W942508BH-5.

    Are these better than Corsair XMS?

    I've heard they run at incredibly tight native timings of 5-2-2-2, and with up to 3.3v running through them and have been known to hit outrageous speeds in excess of 250Mhz FSB, without needing to relax the timings!!!

    :wow:

    Is this true?

    Thanks.
  • LawnMMLawnMM Colorado
    edited August 2004
    abhi63 wrote:
    I've just stumbled upon the legendary BH-5 chips in the form of 2 x 256MB WINBOND PC3200, model number W942508BH-5.

    Are these better than Corsair XMS?

    I've heard they run at incredibly tight native timings of 5-2-2-2, and with up to 3.3v running through them and have been known to hit outrageous speeds in excess of 250Mhz FSB, without needing to relax the timings!!!

    :wow:

    Is this true?

    Thanks.

    500mhz dual channel with tight timings? I'll believe it when I see it. You probably need to volt mod your board to get 3.3v for ram anyway. Best OC'ing mobo for athlons only goes to 2.9 without modding if memory serves.
  • ThraxThrax 🐌 Austin, TX Icrontian
    edited August 2004
    Yes, it's true. And it's been done several times, but does require a simple voltage mod as indicated.
  • abhi63abhi63 UK, Leeds
    edited August 2004
    So is are the 2 x 256MB W942508BH-5 better than 2 x 256MB CMX256A-3200C2PT?

    Does anyone know what chips the CMX256A-3200C2PT use?

    Thanks.
  • JimboraeJimborae Newbury, Berks, UK New
    edited August 2004
    LawnMM wrote:
    500mhz dual channel with tight timings? I'll believe it when I see it. You probably need to volt mod your board to get 3.3v for ram anyway. Best OC'ing mobo for athlons only goes to 2.9 without modding if memory serves.


    Er DFI Lan Party, 3.3v on the memory as standard & yes BH-5 will run fairly tight timings at 250fsb. In my DFI it wont run with lax timings, i think I had to run it at 11.3.3.cas 2.5 to get it run at 250fsb and above.
  • JimboraeJimborae Newbury, Berks, UK New
    edited August 2004
    ok so 11.3.3. cas 2.5 is not that tight, but my bh-5 wont run cas 3 at this speed and its tighter than 8.4.4.3 or what ever. I think I had it tighter than this before but benchmarking proved that this was the fastest speed for me.
  • abhi63abhi63 UK, Leeds
    edited August 2004
    Hi,

    Can someone tell me what VR means in regards to certain Corsair memory?

    Thanks.
  • ketoketo Occupied. Or is it preoccupied? Icrontian
    edited August 2004
    Possibly 'Value RAM', their discounted/lower performance line ... wait, that's Kingston, ignore me.
  • abhi63abhi63 UK, Leeds
    edited August 2004
    Hi,

    I know that it is regarding their XMS revision 1.2 chips which use CH-5.

    Does anyone know what VR means know?
  • edcentricedcentric near Milwaukee, Wisconsin Icrontian
    edited August 2004
    Anandtech has been running an ongoing series of memory reviews. They check out the tightest timings at standard speeds (starting at 400) and also max over clock. It is worth looking at their charts to see what the relitive trade off is for speed vs timings.
    My general feeling these days is that speed is everthing. I have run 200 FSB at 2-3-2-11 and 220 at 3-4-4-11. The 220 is significantly better in benchmarks even though the CPU speed was the same.
  • abhi63abhi63 UK, Leeds
    edited August 2004
    Hi,

    1. What is better/most overclockable for AMD XP systems - 3200 or 3500?

    EDIT// I mean PC3200 and PC3500

    2. What is better/most overclockable - Mushkin 512MB PC3200 Level 1 Dual Pack 232 (2X256MB), Mushkin 512MB PC3500 Level 1 Dual Pack (2X256MB) or my current Corsair XMS 3200C2PT?

    Thanks.
  • JimboraeJimborae Newbury, Berks, UK New
    edited August 2004
    Amd dont make an Athlon Xp 3500, I think you may be referering to an Amd 64 3500, in which case you can't really compare the two as they are different achitectures. Clock for clock though I expect a an XP 3200 will overclock more & it will certainly be cheaper.

    As for your memory I guess I'd stick with what you got as its certainly good stuff & doubt the others would be much better.
  • abhi63abhi63 UK, Leeds
    edited August 2004
    I have edited my previous post to correct my mistakes.
  • JimboraeJimborae Newbury, Berks, UK New
    edited August 2004
    Ah ok abhi makes sense now. :)

    I'd still say stick with what you've got. Just because some ram may be PC3500 it doesn't necessarily mean it'll overclock higher than PC3200.
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