P4GPL-X + Dothan OC problems

[HITAC]

Hi...

I have got a P4GPL-X + 1.6Ghz Dothan and I only want to have FSB225, but it is impossible

Hardware:
P-M 730 SL85G @stock cooler
P4GPL-X without Mods
2x SATA HDD
X700PRO PCIe
2x512MB Twinmos BH5



Max. stable FSB with PCIe @ 100 is 215 !
216 MHz = Freeze or Reboot after ~1-5h (while gaming Doom3)
220 MHz = very, very unstable and freeze in BIOS or post screen
225 MHz = NO BOOT

PCIe @ 105 Mhz:
225 MHz = NO BOOT


wtf???

[Kamerat]

Tried run your memory in async mode and increasing chipset voltage?

[HITAC]

Yes - ram @5:4 and all voltages @max (not CPU but it is enough too )

max. FSB is still at 215 Mhz...

[Kamerat]

Have you seen results from other overclockers that use the P4GPL-X? Your CPU a B1 or C0?

[HITAC]

Have you seen results from other overclockers that use the P4GPL-X

some....

FSB240.... up to 290

but never 215

Your CPU a B1 or C0?

C0

[rivers]

At this point IMHO you should try another video card...
Maybe this mobo (first time I heard of this model ) has an issue in the agp lock.

[Gorgeous]

At this point IMHO you should try another video card...
Maybe this mobo (first time I heard of this model ) has an issue in the agp lock.

its a pci-e mobo not agp

[charlie]

looks like another interesting alternative for the ct-479... if we could get a decent PCI-E board that supports ct-479, we could run 7800gtx!!!!

C

[albertwesker]

looks like another interesting alternative for the ct-479... if we could get a decent PCI-E board that supports ct-479, we could run 7800gtx!!!!

C

the 7800 GTX runs great with an oc dothan on the P4GPL-X

you have to put the PCIe frequency to 123 MHz, so you can get 270 MHz FSB.



here are my results with the 7800 GTX and a P-M @ 3,15 GHz






both with GTX @ default

[Jericho]

the 7800 GTX runs great with an oc dothan on the P4GPL-X

you have to put the PCIe frequency to 123 MHz, so you can get 270 MHz FSB.



here are my results with the 7800 GTX and a P-M @ 3,15 GHz

both with GTX @ default

Awsome stuff

[k|ngp|n]

the 7800 GTX runs great with an oc dothan on the P4GPL-X

you have to put the PCIe frequency to 123 MHz, so you can get 270 MHz FSB.



here are my results with the 7800 GTX and a P-M @ 3,15 GHz






both with GTX @ default

Looking great

[BadlyDrawnBoy]

the 7800 GTX runs great with an oc dothan on the P4GPL-X

you have to put the PCIe frequency to 123 MHz, so you can get 270 MHz FSB.



here are my results with the 7800 GTX and a P-M @ 3,15 GHz


http://home.arcor.de/jodee2/first2003gtxrun.JPG

http://home.arcor.de/jodee2/first7800GTX.JPG
both with GTX @ default

Wow, I wish either of these boards were available in America.

[charlie]

the 7800 GTX runs great with an oc dothan on the P4GPL-X

you have to put the PCIe frequency to 123 MHz, so you can get 270 MHz FSB.



here are my results with the 7800 GTX and a P-M @ 3,15 GHz



both with GTX @ default

Please give more details!!!! You're the only one we "know" running this configuration, give us all the details and tweaks!!
I bet you're on an IDE HDD right??

C

[albertwesker]

Please give more details!!!! You're the only one we "know" running this configuration, give us all the details and tweaks!!
I bet you're on an IDE HDD right??

C

I don't use any tweaks, if you want to reach an high fsb, you only have to set the PCIe frequency higher than 120 MHz.

For example:

PCIe = 123 --> 2,2*123 = 270
so you can get a fsb of 270 MHz, if you use a pcie clock of 123 MHz.

The PCIe clock does only overloads the HDD ( if you use an IDE HDD on the Onboard Controller) and the Northbridge. If you consider the formula ( 2,2*PCIe = FSB), there is no problem with your graphic card. You can also select an higher PCIe clock, but it have to be higher than FSB/2,2.
With a Vchip at 1,6V you can reach a PCIe clock about 220 to 230 MHz. For Higher PCIe clocks, you have to do a Vchip mod to 1,9V.

I use a Promise PCI SATA RAID Controller with 4x WD 250 GB and Vchip at 1,6V, so i can reach a FSB of 290 with no problems.


here is my result in 3dmark 2001:



P-M @ 3150 MHz + 7800 GTX @ stock

the 7800 GTX isn't the best performer at 3dmark 2001, a x850 XT PE should reach 40-42k easily.

[charlie]

I don't use any tweaks, if you want to reach an high fsb, you only have to set the PCIe frequency higher than 120 MHz.

For example:

PCIe = 123 --> 2,2*123 = 270
so you can get a fsb of 270 MHz, if you use a pcie clock of 123 MHz.

The PCIe clock does only overloads the HDD ( if you use an IDE HDD on the Onboard Controller) and the Northbridge. If you consider the formula ( 2,2*PCIe = FSB), there is no problem with your graphic card. You can also select an higher PCIe clock, but it have to be higher than FSB/2,2.
With a Vchip at 1,6V you can reach a PCIe clock about 220 to 230 MHz. For Higher PCIe clocks, you have to do a Vchip mod to 1,9V.

I use a Promise PCI SATA RAID Controller with 4x WD 250 GB and Vchip at 1,6V, so i can reach a FSB of 290 with no problems.


here is my result in 3dmark 2001:



P-M @ 3150 MHz + 7800 GTX @ stock

the 7800 GTX isn't the best performer at 3dmark 2001, a x850 XT PE should reach 40-42k easily.

OUTSTANDING!!!!



have you tried a P4GD1 also?? Great results... will a standard IDE HDD work without the additional PCI card??

C

[^don.k's^]

Tried raising PCIE over 100mhz?

[HITAC]

Tried raising PCIE over 100mhz?

of course


last time i tried:
pcie 120 MHz -> sata not found
pcie 115 Mhz -> sata found, but 220 Mhz fsb is still not stable

fsb 215 works rockstable again

[^don.k's^]

What FSB is set in the CT 479? I get better fsb with jumpers in fsb400 than fsb533. If already tried, go try another memory and good luck...

[HITAC]

What FSB is set in the CT 479? I get better fsb with jumpers in fsb400 than fsb533.

BINGO !!!
I love you.

More FSB is now possible...

[charlie]

try benching with IDE HDD!!

C

[sky]

try using this formula to calculate the necessary pcie frequency:

pcie x 2.2 = fsb

so if you want an fsb of ~225 mhz you should try somewhere around 102 mhz pcie
- maybe try 100-104 mhz, whatever works (best)

[HITAC]

try using this formula to calculate the necessary pcie frequency:

pcie x 2.2 = fsb

so if you want an fsb of ~225 mhz you should try somewhere around 102 mhz pcie
- maybe try 100-104 mhz, whatever works (best)

Doesn't work....

All over FSB215 (215,5 real) is NOT stable.
ram async, more voltage..... all tried....


Should I get another PCI/PCIe clock with setting PCI to (e.g.) 104 or higher?

FSB215,5 PCIe100 -> PCIe 107,73 (clockgen)
FSB215,5 PCIe105 -> PCIe 107,73
FSB215,5 PCIe95 -> PCIe 107,73



OK.... I will try it now with IDE-HDD, PCI-raid-HDD and Jumper@400 instead of 533.

[charlie]

so what's better, P4GD1 or P4GPL-X????????

C

[Venom21]

so what's better, P4GD1 or P4GPL-X????????

C

I'll say the P4GD1 to. it is based on the 915P that overclocks better than the Intel 915PL chipset.

and if you will use a booster on a P4GPL-X you will loose your Dual channel since it only has 2 DDR dimms.

[^don.k's^]

I think the P4GD1, i own one, and i think it could do good things... But not so good like 865/875...