Overclock.net › Forums › Intel › Intel CPUs › Better mobo, worse overclock?
New Posts  All Forums:Forum Nav:

Better mobo, worse overclock?

post #1 of 3
Thread Starter 
Hey, just joined the forums cause I was having a problem specific enough to not find previosly addressed, a.k.a. Google failed.

Back in May I built a new build around the Pentium D 805 hype, and was satisfied with my 3.9 Post and 3.6 stable overclocks. However, my Asus P5ND2 SLI with an nForce4 chipset was a stability nightmare and was very finicky to any BIOS or hardware changes that required multiple restarts to boot.

After it finally crapped out recently, I didn't care much because I wanted a Core 2 motherboard anyway and it was the perfect excuse. But oddly, on my shiny new MSI P965 Platinum (should have waited a few more weeks for the 650i SLI, but meh) I can't achieve nearly as high or stable overclocks. It's not much of an issue since I'm getting an e6400 for Christmas, but I'm still curious for any input.

On my original motherboard, I could boot into Windows at 3.9, almost stable but too hot at 3.8, and rock stable with decent temps at 3.6 with 0.1625 added to the vcore. However, the P965, which I know can handle 400+ FSB, is totally unstable at any voltage with clocks over 3.4 or a FSB over 170. I noticed it defaults to voltage to 1.25 rather than what it should be at 1.3375, and even compensating for this up to 1.5 yields in crashing at 3.6. I can't even boot at 3.8, which I used to could run Windows in. My cooling is the same Zalman CNPS9500 that keeps temps at 63C load. The BIOS also had my ram voltages too low, but bumping those up didn't help the crashing. Unless it's possible the CPU is just deteriorating (which seems unlikely since it was running fine at 3.6 until I switched mobos), I'm totally out of ideas.

Any ideas would be appreciated, thanks.

Edit: I considered updating the BIOS to version 1.2 from 1.1, but figured it would have little relevency to overclocking; I wanted to avoid the hassle, but correct me if I'm wrong.
    
CPUMotherboardGraphicsRAM
Pentium D 805 @ 3.4 MSI P965 Platinum eVGA 7600GT Crucial Ballistix DDR2-800 4-4-4-12 
Hard DriveOptical DriveOSMonitor
Maxtor 250, WD 320, Seagate PMR 320, 890Gb Samsung 18x DVD-RW and some other cheap DVD-rw Windows XP Pro 19" CRT 
KeyboardPowerCaseMouse
Cheapo POS Antec SmartPower 500W CoolerMaster Praetorian (the old one) Logitech G7 
Mouse Pad
Scuffed laminated wood 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Pentium D 805 @ 3.4 MSI P965 Platinum eVGA 7600GT Crucial Ballistix DDR2-800 4-4-4-12 
Hard DriveOptical DriveOSMonitor
Maxtor 250, WD 320, Seagate PMR 320, 890Gb Samsung 18x DVD-RW and some other cheap DVD-rw Windows XP Pro 19" CRT 
KeyboardPowerCaseMouse
Cheapo POS Antec SmartPower 500W CoolerMaster Praetorian (the old one) Logitech G7 
Mouse Pad
Scuffed laminated wood 
  hide details  
Reply
post #2 of 3
I don't know much about that MSI board, and I am not sure if it's a good overclocker or not...

Having that said, a BIOS flash might always help, since it is possible that there is something in the BIOS that messes up things.

What is your RAM frequency setting during all this?
    
CPUMotherboardGraphicsRAM
E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
KeyboardPowerCaseMouse
N/A Corsair HX520 Coolermaster Cavalier N/A 
Mouse Pad
N/A 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
KeyboardPowerCaseMouse
N/A Corsair HX520 Coolermaster Cavalier N/A 
Mouse Pad
N/A 
  hide details  
Reply
post #3 of 3
Thread Starter 
The memory is under-spec at DDR2-680 170 x 2 x 2, so surely it's not my ram limiting it.

Review sites have attained results that are pretty much on par with most P965 boards, and so long as I can hit near 3Ghz on my future e6400 (FSB 375x8), which has been done on many sites, I'll be happy.

It was the lowest price and this:

http://images.tomshardware.com/2006/...l/image002.gif

that sealed my purchase.

And despite a few sites out there with lackluster overclocks on the board (375mhz cap), those are with Core 2s with stock FSB speeds of 266mhz. I can't even go past 170mhz, far below its rated speed.

So perhaps it's the BIOS, I'm not sure. I should flash it eventually anyway, but would rather not.

Thanks for the help.
    
CPUMotherboardGraphicsRAM
Pentium D 805 @ 3.4 MSI P965 Platinum eVGA 7600GT Crucial Ballistix DDR2-800 4-4-4-12 
Hard DriveOptical DriveOSMonitor
Maxtor 250, WD 320, Seagate PMR 320, 890Gb Samsung 18x DVD-RW and some other cheap DVD-rw Windows XP Pro 19" CRT 
KeyboardPowerCaseMouse
Cheapo POS Antec SmartPower 500W CoolerMaster Praetorian (the old one) Logitech G7 
Mouse Pad
Scuffed laminated wood 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Pentium D 805 @ 3.4 MSI P965 Platinum eVGA 7600GT Crucial Ballistix DDR2-800 4-4-4-12 
Hard DriveOptical DriveOSMonitor
Maxtor 250, WD 320, Seagate PMR 320, 890Gb Samsung 18x DVD-RW and some other cheap DVD-rw Windows XP Pro 19" CRT 
KeyboardPowerCaseMouse
Cheapo POS Antec SmartPower 500W CoolerMaster Praetorian (the old one) Logitech G7 
Mouse Pad
Scuffed laminated wood 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Better mobo, worse overclock?