Wizzard1

I have a new-ish DDR3 motherboard, the Gigabyte X38T-DQ6 and 4x1GB Corsair 1600MHz 7-7-7-20 at 1.8v DDR3.

I currently have my CPU at 1.3V, 3330MHz, 1333Mhz FSB, with the RAM running at the same speed, 6-6-6-13 1.75v.

I want to push my clock higher, but my CPU wont POST at even 10.5x multi at this FSB, nor will it POST much higher than 333Mhz FSB.

I have the NB strap set to the 4.0B, which is the 333Mhz strap.

The motherboard doesnt support higher memory multipliers than 4.

I am using an Intel cooler from a P-D 950 with a copper core, heat isnt an issue.

Any recommendations?

MasterKromm

Installing ram in all 4 DIMMs stresses the NB more as does dropping the multi... So, have you bumped up vNB or is set to stock/auto?

If that doesn't help the CPU may have a low FSB wall, TBH I don't think I've heard of an e5200 that could hit 400FSB.

Post up some of you voltage settings: vNB, vCORE, FSB VTT (ect).

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Wizzard1

vNB is +.1v I believe, vCORE is 1.3V right now, I don't want to go much higher. FSB VTT is normal, and I have only a +.1V or -.1V on this setting.

I realize 4 DIMMs stresses the system but I didnt know it could effect the CPU overclock, I thought it only effected DIMM clock stability (IE lowers max overclock of the DIMMs).

My Multi is 10, perhaps I'll try 12x290 or 11x300 when I get back to the office tomorrow. But wont lowering the DIMM clock make my system performance less overall?

I am trying to max out my RAM speed primarily, then the processor... I'm going for the highest 3dmark score independent of my graphics card.

MasterKromm

http://www.anandtech.com/cpuchipsets...spx?i=3184&p=7

As mentioned above there are a lot of factors that come into play, but populating all 4 DIMMs is a big one.

Ram speed has a relatively low ROO(trying to make my own acroynm here, think ROI - return on Investment; ROO - Return on Overclock). Raw CPU speed, especially where FSB has been pushed higher, always pays with the biggest gains.

IFF you were stable @ 333FSB x10 then it's probably not a lack of voltage to the NB, however it's best to isolate any potential variables(aka increased stress via 4 dimms) another thing to consider might be loosening memory timings(again - variable). So keeping the voltage settings you've used thus far try ->

1)333FSB x10 = 3.33ghz @ 1.3V 1333Mhz 6-6-6-13 1.75v. stable.

2)310FSB x11 = 3.41ghz @ 1.3V 1240Mhz 7-7-7-20 1.75v. stable?

3)320FSB x11 = 3.52ghz @ 1.3V 1280Mhz 7-7-7-20 1.75v. stable?

Option 1 represents what you currently have your CPU at(or had). Considering the memory clock is lowered, FSB is lowered and timings are loosened if both 2+3 prove unstable then your at a CPU freq. "wall" and only more Vcore will breach it. However, if both prove stable 333FSB(x10) would either represent a FSB wall that could be broken by adding more Vmch(Vnb) or 333FSB @ 1:2 ratio with those timings(6-6-6-13; especially if PL is really tight) and 4 DIMMs might be what caused a no go with 333+FSB.

Anyway try some different settings and report back if you need any more help or further confusion as the case may be... Sorry I didn't respond sooner, I had completely forgotten.

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keyboard_commando

Youre better off loosening Ram timings untill youve maxed the CPU. Then go back to them.

Like the link says, MCH V increase is probably the only way youre going to stretch your ram capability.