DFI LANparty DK P45-T2RS/T3RS (Intel P45) - News|Info|Results

[Blackoberst]

Try changing NB GTL if you change vNB.

[DemonEyez]

Try changing NB GTL if you change vNB.

But also take in mind that NB GTL is derived from vTT, just like CPU GTL is.

I updated the BIOS to 0812

Every rig is different but here are my slightly sloppy setting, remember I only got this board yesterday & some of the voltages are a touch higher than they need to be.

....

B]>Voltage Settings:[/B]


SB Core/CPU PLL Voltage............. - 1.55v
NB Core Voltage..................... - 1.5575v

It's best to not set vNB and vCPU PLL the same voltage. There needs to be a gap between these two, or they'll interfere witch each other causing instability for the North Bridge.
So up your SB Core/CPU PLL Voltage or lower NB Core Voltage. I would prefer the latter. Take in account that - idealy - CPU PLL voltage is set 0.3v to 0.4v above vCC (=vcore)

[C-N]

It's best to not set vNB and vCPU PLL the same voltage. There needs to be a gap between these two, or they'll interfere witch each other causing instability for the North Bridge.
So up your SB Core/CPU PLL Voltage or lower NB Core Voltage. I would prefer the latter. Take in account that - idealy - CPU PLL voltage is set 0.3v to 0.4v above vCC (=vcore)

You are probably right but I've never found an instability problem with any of my DFI boards right back to the ICFX 3200 which was one of the first boards with GTL, VTT & PLL features.

My P35 has run for nearly a year with 1.55v pll & 1.57vnb.

I wouldn't recommend upping the PLL either for 24/7 use, I've hurt plenty CPU's max fsb using high PLL voltage.

My board/chip is running prime stable at 533fsb with 1.55 vpll & 1.25 CPU vcore. The same chip has run for a couple of months @ 475 x 9.5 1.55vpll @ 1.4vcore.

Ideally Intel don't want there 45nm's going past 1.25v but I guess when you overclock best intentions & ideals go out the window.

CN

[DemonEyez]

You are probably right but I've never found an instability problem with any of my DFI boards right back to the ICFX 3200 which was one of the first boards with GTL, VTT & PLL features.

My P35 has run for nearly a year with 1.55v pll & 1.57vnb.

I wouldn't recommend upping the PLL either for 24/7 use, I've hurt plenty CPU's max fsb using high PLL voltage.

My board/chip is running prime stable at 533fsb with 1.55 vpll & 1.25 CPU vcore. The same chip has run for a couple of months @ 475 x 9.5 1.55vpll @ 1.4vcore.

Ideally Intel don't want there 45nm's going past 1.25v but I guess when you overclock best intentions & ideals go out the window.

CN

yeah I also read that high vPLL could damage the chip. It would be nice to see DFI change the big steps in the bios for this voltage. Asus for example let's you control it with much smaller steps.

Still I find vNB a bit high. The P35 is 90nm so 1.55v isn't that high, but P45 is 65nm and needs less voltage. So when you take that in account, 1.55v seems rather high. I wonder if longterm high voltage has severe effects on this chipset or not.

[C-N]

yeah I also read that high vPLL could damage the chip. It would be nice to see DFI change the big steps in the bios for this voltage. Asus for example let's you control it with much smaller steps.

That would be nice, put my name on the petition

Still I find vNB a bit high. The P35 is 90nm so 1.55v isn't that high, but P45 is 65nm and needs less voltage. So when you take that in account, 1.55v seems rather high. I wonder if longterm high voltage has severe effects on this chipset or not.

Yes you are right it is rather high however if you want to run fast & more aggressive then its needed for stability (at least with my board it is)

>DRAM Timing:

Enhance Data transmitting........... - Fast
Enhance Addressing.................. - Fast
T2 Dispatch......................... - Auto

>Clock Setting Fine Delay Press Enter:

Ch1 Clock Crossing Setting......... - More Aggressive

[tamashumi]

Have you tried 1:1 & slackening your RAM timings off to take 2x2GB sticks into account?
Try...

Surely I'll try 333/667 as I'm not sure have I before.
Btw. What's the difference between 400/800 and 333/667? Aren't they both 1:1 ?
My ram should do 533 on 1:1 without timings slackening. It's DDR2-1100MHz cl5-5-5-15 by default. Moreover I've tested 1000MHz and 1100MHz without rising FSB (on other DRAM:FSB dividers) and it fact RAM is stable not to mention about problems with bios-post (C1 on post-led).

Need Help guys...

I have 4870 also but Diamond manufactured. I have no problems at all so I doubt it helps. But maybe try to update graphic card bios... No jumpers settings (I know) will help here. Try also to set in bios PCIx for "init display first".

[C-N]

Surely I'll try 333/667 as I'm not sure have I before.
Btw. What's the difference between 400/800 and 333/667? Aren't they both 1:1 ?

You are quite correct 400/800 & 333/667 are both 1:1 but they use different straps. The 400 strap should be easier to run than the 333 strap but I haven't actually tested it on this board. It wont cost you anything but time to play/try the 333 strap so IMO its worth a go.

My ram should do 533 on 1:1 without timings slackening. It's DDR2-1100MHz cl5-5-5-15 by default. Moreover I've tested 1000MHz and 1100MHz without rising FSB (on other DRAM:FSB dividers) and it fact RAM is stable not to mention about problems with bios-post (C1 on post-led).

I was referring to slackening the timings off from my 2gb setting if you were trying my exact timings as posted. My 4GB kits would not even run tRFC at 28~30 they need to be 46 + to get any joy out of them.