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I need an X48 recommendation.

Discussion in 'Motherboards & Memory' started by Yukikaze, Apr 19, 2009.

  1. Yukikaze

    Yukikaze

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    Hey all.

    Since my JR P45 TR2S will only take me to 4Ghz, I am considering of relegating it to a second-line role in my HTPC and getting myself an X48 based motherboard.

    They are all relatively expensive, but I don't need the insanely priced boards, I think.

    I need a board that has a reasonable shot of doing 500+FSB a Q9650. I don't need three PCI-E x16 slots, so two will do just fine. I was thinking of the DFI X48 TR2S as an option, since I love DFI, but I am open for any other suggestions.

    Any idea fellas ?

    Thanks !
     
  2. Mussels

    Mussels Moderprator Staff Member

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    I'm running the DFI x48 T2R, but have no idea about 500 FSB. I got to 400 FSB with ease, but i cant pas ~430 FSB with this setup, but i had that same problem on my last mobo, so its a CPU or ram limit.
     
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  3. Yukikaze

    Yukikaze

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    I am replacing the RAM I am using (2x2Gb A-Data Vitesta + 2x1Gb PQI sticks) with 4x2Gb G.Skill Pi 1100Mhz anyway, so I will be able to check whether that is the RAM that is holding me back (Although with my E5200 the RAM ran just fine at 938Mhz and now it sits at 890Mhz, so I don't know if that is the issue here).

    My P45 just won't go over 447-448 FSB or so (But the rig is 3 hours Orthos stable at 445x9 and 1.28v), even when I fed the CPU 1.355v (Since I am sub-1.3v for 4Ghz I doubt the chip can't go higher) and 1.45v to the NB and 2.1v to the RAM. I raised the clock-gen volts as well, and the PLL and even the SB to no avail.
     
  4. Mussels

    Mussels Moderprator Staff Member

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    you could have hit an FSB wall on the CPU. its annoying, but it does happen. Thats what i suspect is holding my Q6600 back, as with a lower multi i cant clock very high on the FSB.
     
  5. Yukikaze

    Yukikaze

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    Come to think of it, I haven't tried to lower the multiplier and see what happens. I'll try that next weekend and see what happens.
     
  6. Wile E

    Wile E Power User

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    My QX9650 wont go a single mhz above 449fsb, regardless of the multi I use. I know it's not the board, because the same board and ram took my Q6600 to 475fsb.

    I hate to say it, but I agree with Mussels, it may be your chip, not the board. Try the new ram, and see if it helps. Also remember, the quad moves a lot more data, so your fsb will need much more voltage compared to a dual core.

    And, besides all that, P45 actually clocks better than X48.
     
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  7. Yukikaze

    Yukikaze

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    I was under the impression the X48s did better with quads as far as clocks go than the P45s, but perhaps I was mistaken. Once I get my Antec SpotCool installed and directed at the NB/SB area I'll try running some heavy voltage through the chipset to see if I can boot a higher FSB, if not, might well be the chip. I could try to verify it by running my Q6700 on the same setup, but that's a lot of effort just to check that (Removing an IFX-14 and the u120x and placing them back is nowhere on my list of fun things to do).

    That'll suck, but then again - I am not really using 4Ghz on 4 cores, so going higher is overkill anyway. Problem is - I love overkill :rockout:
     
  8. largon

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    Fact is, P45 is a better FSB OC'er than X48 (= X38).
    Infact, P45 is the best chipset for OC'ing Yorkfields.
     

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