M11x clock generator ICS9LPRS387BKLF

[Khenglish]

Oh god over 3ghz and everything is stable, well... ethernet was a pos and went out at like 4% OC, but the wireless card still works so who cares.

UPDATE:
Not enough power! I don't mean cpu voltage. Ran some 3dmark and graphics card can't run at max clocks at anything over 2.7ghz. When it crashes and runs throttle clocks and voltage I can run over 3ghz. Never managed to hit max cpu clock at stock volts. CPU and mem are stable at over 3.2ghz then all PCI-E devices start to randomly fail. Ex. graphics card driver crashes, wifi card loses connection, and on reboot system can't find HDD. Also noticed that the system can never successfully restart while overclocked, so I'm thinking that when the ethernet goes crazy that it refuses to post.

The graphics card crashing is kinda funny since it supports pci-e 2.0, which from my understanding is 2x the frequency of pci-e 1.1. I wonder if power issues are solved if I can overvolt the southbridge for PCI-E device stability. If 20%+ OC gets stable I'm getting a PE4H.

[Dufus]

well... ethernet was a pos and went out at like 4% OC

That doesn't sound good. See if changing reg 0 to 6 instead of 2 helps. 2 switches the sata clock to PLL2 so it's not affected by the OC on PLL1. 6 also moves the SRC to PLL3. I would have thought it's divider would be disabled by reg 10 but try 6 just in case.

If the PLL isn't resetting after an unstable reboot, power needs to be removed for a reset.

I am still looking to do something with my RAM for my OC, unfortunately it's DDR2. DDR3 would have been so much better.

setFSB is still in production but no longer freeware. Still at ~$5 it's good value for those that need a simple way to software OC. Maybe rpg-XPS who provided the 387 datasheet should email Abo. Who knows, maybe he will give a free key in exchange. Seems everything is there except reg 21 and the M/N divider registers, will try to look into it later.

[stevenxowens792]

Ok... so for those of us who are not quite as technical as others... we are going to have to pin mod our alienware and use setfsb to get an extra 200mhz or more?

Thanks,
stevenX

[Khenglish]

That doesn't sound good. See if changing reg 0 to 6 instead of 2 helps. 2 switches the sata clock to PLL2 so it's not affected by the OC on PLL1. 6 also moves the SRC to PLL3. I would have thought it's divider would be disabled by reg 10 but try 6 just in case.

If the PLL isn't resetting after an unstable reboot, power needs to be removed for a reset.

I am still looking to do something with my RAM for my OC, unfortunately it's DDR2. DDR3 would have been so much better.

setFSB is still in production but no longer freeware. Still at ~$5 it's good value for those that need a simple way to software OC. Maybe the guy who provided the 387 datasheet should email Abo. Who knows, maybe he will give a free key in exchange. Seems everything is there except reg 21 and the M/N divider registers, will try to look into it later.

Changing it to 6 didn't help. The ethernet is on the PCI-E bus so both sata and PCI-E would have to be locked to bring ethernet back I think.

BTW got around to testing max stock volts stable cpu clocks. So far it looks like 2936mhz is it. All components seem to be staying in line besides ethernet. Definitely having power issues with overclocked cpu and overclocked gfx card on both battery and AC so gfx card is at stock for now. Going to drop the multiplier after I test these clocks a bit more and see if I'm cpu or mem/pci-e bus limited. I'm hoping cpu since that's something I can work with pretty easily. Can't edit SPD table with my particular memory.

[RC0310]

even though I have no idea what you guys are talking about, keep up the good work!

hope there will be an easier way for us to overclock the CPU in the near future

[Dufus]

Ok... so for those of us who are not quite as technical as others... we are going to have to pin mod our alienware and use setfsb to get an extra 200mhz or more?

I'm not sure if you would need to pin mod unless you need some extra volts for the cpu. You might need to remove a resistor that sets TME to prevent software overclocking and hope that Abo will update setFSB with the 387.


Khenglish, I don't know what's going on with your ethernet. I'm not seeing anything like that and am able to still use the LAN for validation up to 360MHz bus clock. For now I have just been using the registers in clockgen to increase clocks, not that it should make any difference.



http://valid.canardpc.com/show_oc.php?id=1147905

[DR650SE]

Hopefully this brings good news for the M11x, I don't have my overclocking and benchmarking drive in so I can't really try anything at the moment.

[Khenglish]

Khenglish, I don't know what's going on with your ethernet. I'm not seeing anything like that and am able to still use the LAN for validation up to 360MHz bus clock. For now I have just been using the registers in clockgen to increase clocks, not that it should make any difference.



http://valid.canardpc.com/show_oc.php?id=1147905

Wow your cpu blows mine away. Mine can only manage 2938mhz at 1.263V at only 58C (low for a laptop). If I go for a suicide shot I don't think I can get much over 3.1ghz. I looked into getting an E0 revision but it's just too expensive to justify. Your fsb is also ridiculous. When I drop the multi my bus can get up to 327mhz. Any higher then the gfx card driver starts crashing constantly. Gonna look into what I can do with the southbridge since I'm thinking that the PCI-E controller is the issue and not the graphics card since the card supports 2.0 spec.

[Khenglish]

Well I undid my little gfx vmod and now I can run both the cpu and gfx overclocked at the same time, just the gfx is a bit slower than it was.

The cpu is only stable up to a 309mhz bus while 327mhz is stable when I drop the multiplier. Loosening memory timings and chilling the system with an ice pack didn't help at all for trying to get over 327. I grounded VID0 and VID1 to try to get the cpu stable at the 327 bus it seems that nothing changed. Intel spec finder and cpu-z list different voltages for my cpu. Grounding those 2 pins should have given me a voltage increase for the voltages that both reported so I'm a bit confused.

[Dufus]

I just run that validation with a high bus clock to see if I would get the problems you had with the LAN. I'm still thinking what I am going to do with the RAM so haven't run for stability yet. Good to see your getting on top of it.

Seems like a busy weekend but will try and get back with some more info on the 9LPRS387 for the M11x users a little later on.