Skulltrail Overclocking

[jcool]

Skulltrail is limited to the FBDIMM's. Fugger and Kingpin have some VERY good ones. Mostly what you can buy won't do much over 400mhz. Maybe 405mhz for double sided sticks, 420-450mhz for single sided.

Wes,

maybe it's got something to do with how well a mobo handles the ram. Me, I am running around with the cheapest 2GB FBDimms I could find. They are doublesided but my Z7S runs them through memtest at 450 no problem.
Same goes for a friend of mine who also has a Z7S with Kingston Values. He's even benching at FSB 460 with 4x2GB, using quadchannel. I can't boot above ~446 FSB but that's due to the CPU's limit (VTT not Vcore btw).

[Euler]

Movieman,

Which Supermicro mobos are you overclocking?

Also, I take it that's really an X5842 and not just a misread QX9775? If so, it's nice to see the non-Skulltrail chip OC'ing, even if it's just by 10%.

The main reason I'm interested is that the Skulltrail mobo may not provide enough RAM slots for me, so using one of the Supermicro boards with tons of RAM plus OC-ability would be really nice! (Not to mention somewhat cheaper than having to go with QX9775's.)

[Gunslinger]

planning to build a skulltrail system

intend to use 2 dual-core xeons, since dual cores are better to overclock than quad cores (if I ever need more cores then I will get a second such box)

intending to use two of the 3.4ghz x5272, 1600fsb

then, would like to up the bus speed from 400 to 450: 3.825ghz

then would like to up the multiplyer from 8.5 to 10 or 10.5: 450*10=4.5ghz, *10.5=4.725

or use the 3.33ghz x5260 1333fsb, also targeting 4.5 to 4.7ghz, with any combination of bus-upping and multiplyer-upping.

How do you plan on doing this running CPU's with locked multipliers?

[Tutto]

What memory would you recommend I purchase. I currently using Mushkin 2x2gb and I can't get over 400fsb with a pair of x5460s.

[Movieman]

Movieman,

Which Supermicro mobos are you overclocking?

Also, I take it that's really an X5842 and not just a misread QX9775? If so, it's nice to see the non-Skulltrail chip OC'ing, even if it's just by 10%.

The main reason I'm interested is that the Skulltrail mobo may not provide enough RAM slots for me, so using one of the Supermicro boards with tons of RAM plus OC-ability would be really nice! (Not to mention somewhat cheaper than having to go with QX9775's.)

Supermicro X7DWA-N:
http://www.supermicro.com/products/m...00/X7DWA-N.cfm
correct, retail X5482's not QX9775's
Transcend 4x2 gig DDR2-800FBDimms
All stock voltages on cpu and memory, not adjustable anyway on this board.
Max memory was 454, bluescreened at 455.
Rock solid for 24/7 100% load at 438( I loaded the machine for 48 hours at 8x438 and no issues.
Would pull a SP1M at 8x450(13.29s) and run Cinebench 10 at 3574mhz
All on crappy Intel factory HS with a 12" fan blowing into the case in a 70F room.

[RottenMutt]

Movieman,

Which Supermicro mobos are you overclocking?

Also, I take it that's really an X5842 and not just a misread QX9775? If so, it's nice to see the non-Skulltrail chip OC'ing, even if it's just by 10%.

The main reason I'm interested is that the Skulltrail mobo may not provide enough RAM slots for me, so using one of the Supermicro boards with tons of RAM plus OC-ability would be really nice! (Not to mention somewhat cheaper than having to go with QX9775's.)

I can no longer recommend the SM boards until they fix the inadequate CPU power regulator circuits. To run stable on my x7da3+ I need two fans cooling the power regulators. I can no longer run my x7da8 and am on the second rma.

[Movieman]

I can no longer recommend the SM boards until they fix the inadequate CPU power regulator circuits. To run stable on my x7da3+ I need two fans cooling the power regulators. I can no longer run my x7da8 and am on the second rma.

Wow, My X7DAE which is essentially the same as your X7DA8 has run at 100% load since dec 2006 with only shutdowns for OS upgrades and cleaning every 3-4 months. A real tank.
The X7DWA-N with the X5482's in it was dead stable at 8x438 and benched at 8x450