is it because u didn't supply enuf vdimm?
usually 2.8V can give a good BH5 to run 2-2-2-5@DDR440

---

Added on August 30, 2007, 4:04 am@fylon,
seriously, running 4dimm was no go for all platform, not to mention S478.
try get 2 X 512MB ram and OC kaw-kaw.

here are some advice :

1. change your ram:fsb ration. make ram running 100 or 133mhz,
then start to clock up fsb to find the best cpu clock. while doing that, run some prime or orthos to stress the cpu for stability. (pls do with stock vcore 1st)

2. once u had the cpu sweet spot, start work with ram. see how much yr ram can be clock with stock timing & vdimm.

3. it's best if u can compile the oc attemp into excel sheet so that is easier for u to refer .

4. after u had both ram and cpu sweet spot, try to match them up for the best combination. refer the excel file earlier to make the best OC.

*remember to try this at stock Vcore/Vdimm 1st. slowly increase the
voltage after u had obtain the best OC to squeeze even more mhz from it. remember to burn in your system (best if over night) for stability check.







This post has been edited by overclockalbert: Aug 30 2007, 04:04 AM

@fylon, do u intend to used the RaptorXX for your current system? i think there should be no problem.
But then, if you are working on a new rig, better stay away from it.
better off looking for something better, save your hassal.....

I try using XP-90 with Nidec 92mm TA350DC fullspeed
OC 2.8E till 3.8 with 56C on air.

last time try XP-120 also not low temp. must be the mounting better.

@sang_karim, before u do any damange to your system by pumping more juice to CPU and ram, let just start to do the basic of the good old P4 OC trick.

the steps,
all related voltages set to default. ram timing to default too.
set fsb:ram ratio to 5:4 so that to eliminate ram as bottleneck yr OC.
started to up the fsb from 200, 205 , 210, 215, 220....... until the system become unstable.
when the system become unstable, then it's time for u to up the Vcore. slowly up the vcore with tiny increment, eg 0.05v
and keep upping the fsb till u hit the CPU wall. now u get the max OC of just the CPU.


next,

find your ram max OC. set vdimm voltage to 2.8V, timing to 3-4-4-8 (anyway, what chipset was inside your KVR???)
make sure to set the fsb:dram ratio to 1:1 (as yr P4 don't have unlock multiplier to select am i right).
start to up the fsb and u'll then get the max OC of your ram.

next, combine your OC of ram and CPU (best is to record your OC experience to a list for ez compare)
so u no need to worried about which voltage to choose for your OC.

* as for this OC experience, make sure u have a proper cooling of your CPU,ram,northbridge chipset as this the 3 main heat component. make them cool under load.

by following steps, u won't get lost that ez........happy OC-ing.

@sang_karim,

nice result for the OC. 3.75GHz


To test the stability of overclocked CPU: using prime95 stress program :

Double click on PRIME95.EXE to start the program.

Just Stress Testing (if prompted) > OK >
Options > Torture Test > Blend


The program should not give any errors.
It may be necessery to run the program 12 hours to make sure an overclocked system is stable (no program errors displayed).


If you get errors only after several hours, this is a result of slight instability because the system is running with little or no margin. It's stable enough to boot and to be moderately stressed, but as soon as the system is under enough load to go over that critical point, it will freeze. To be 100% stable, Prime95 should run 12-24 hours without any errors.

The whole point of testing is to see if you get errors or not thus testing the stability. The meaning of errors themselves is not the issue.

And here for u to run the dual instant of Prime95 :


Running a hyperthreaded CPU and wants to load it 100% instead of just 50%.

Here:

-Open the Prime console as you normally would, but don't start the torture test.

-Then go to Start button - Run.

-Click the browse button and find where you located Prime95.exe Once you find it, click Open.

- The path in the browse box will probably look like this "C:\Program Files\Prime95\Prime95.exe"

- Put your cursor at the end of that text line after the ...exe"

- Press the space key once and then type -A1 (dash A one)
"C:\Program Files\Prime95\Prime95.exe" -A1

- Press the OK button.

You now have two Prime Consoles

Now before you begin the tourture test, go to Options - CPU and in the two boxes for amount of memory used, take whatever number shows in there now and divide it in half, and then enter the new halved number in both boxes. Save and exit the options box. Do the same thing for the other Prime console. Failing to do this will result in the chewing up of your paging file (I know cuz I just tried LOL )

Now run Torutre Test on both consoles.....

You're now using 100% CPU Utilization on an HT CPU.

**All this from XS forums.


for your system, why i saw u just running on single channel? had u install the ram in the correct way? try to install
them in the ram slot which have the same colour.

as for the FSB:Dram ratio setting, u might stick with 5:4 ratio.


FSB : Dram
5 : 4
250 : 200

if

FSB : Dram
3 : 2
250 : 166


you will have more crapy bandwidth on your system. Actually higher bandwidth is better for your
P4 system. just try to stick at 5:4 and try to tighten your rams timing as your ram is running at default
frequency now @DDR400 so u can set the timing to 3-3-3-8 ( is this the default timing for yr KVR ram??)

as for the Vcore , what is your default Vcore as intel recomended???
as in the CPU_Z screeny, i saw u have a pretty good temp, 40C. just try to run prime95 to see weather your system really stable.
u need time to tweak more on the Vcore and timing (IIRC)...i was once a P4 HT fanboys......


happy OC-ing......

@sang_karim,

try to post some of your dual instant prime95 screenshot to gather
with CPU_Z screeny for us.

now u are setting 1.45V for Vcore right?
and fsb to 245Mhz so u r running 245X4 =980Mhz not bad.

as for the temp, 49C under full load....... are u using water cooling setup? or u r in AirCond room?
that was a really nice temp that a prescott can do. mind to tell your cooling method?

DO u have DMM? try to measure it out at the molex connector. yelloe to + ve and black to -ve end.
if the voltage from DMM is 12V, then something must be wrong with yr sensor chip or the mobo bios errror.

go check the actual 12V with DMM 1st, then u know.

2-3-3-8 for sang-karim ram will not be possible i think as it's not the famous chipset in used.
try 2.5-3-3-8 instead, maybe it can run. who knows.

as for the DDR booster, try to search in the OCZ forum about how to used it. it only support certain
mobo to hit 3.9V. not all mobo can be tune to that high of vdimm.
the vdimm can be set till 3.9V was due to the DDR booster draw the 5V from PSU. so theorically, u can tune it till
5V max(theory only) but heck, who cares about that. u can fly high with BH5 chip even with 3.4V if u get the good chip.

anyway, fylon, did u confirm that yr xms was using the famous BH5 chipset?


rgds,
Albert

i need to do correction here.
from the CPU-Z screeny by @sang_karim, he still using 5:4 ratio, which mean that
there is nothing to do with it's so call "value" ram can handle 250Mhz. it was just the Prescott that
handle the 250Mhz.

the value ram was still stuck at 200Mhz, which mean it's running at default/stock speed and timing, and there is no meaning
u "up" the vdimm that high till 2.85V . U can probably do that at 2.6V IMO cos it's still running stock.


*about the dual channel issue, did u always facing this problem? i mean the single/dual channel problem always happened
when u switch your ram? can u post the real picture of the ram slot and the position u install them. more EZ for us to know the
problem . there is also possible that the gold plate contact of your ram was contaminated or dirty. try to rub it (pls be gentle)
with a rubber eraser to clean it. as for the ram slot, u can't do much about that, but just go get any contact cleaner (pressure type
with IPA/alcohol content) which can aid in the contact cleaning.

**
for your prescott OC, 1.475V set for Vcore, how was the temp recorded when u stress your system? do u facing only 50% CPU load
when running stress test eg. prime95 or sp2004? try to check with ctrl+alt+del , check the task manager -> performance to see weather the CPU is 100% loaded or not.

my advice, try to stick with 5:4 ratio, relax your ram timing till 3-4-4-8-1T at 2.8V
and start to up the fsb from 251Mhz. maybe u need to burn-in your CPU in order for it to run much higher.Please look after the
northbridge cooling as well. (what chipset cooler that u used to cool the northbridge????????) it was an important cooler for P4 prescott OC setup with high FSB freq.

just try that for few night and get over to 253Mhz, 255Mhz.....who know u can get it till 260Mhz.



happy OC-ing


rgds,
Albert

@kabukiawie, since u got northwood core P4, it's harder to get thru 3.6Ghz iirc , as the northwood core was design to act like that, but if with extreme cooling, u may get more.
And the main backdraw for your OC, imo, was your mobo northbridge. it holds u from going 250Mhz as the voltage not enuf to feed to NB.

---

Added on September 27, 2007, 4:14 am@fylon, the OC for sang_karim with 5:4 ratio , his ram was running with 166Mhz not 133Mhz. (if set the ratio to 3:2 then the ram was running 133Mhz)


@sang_karim, if u really into this P4 OC , i have a great ram to offer. i still have a pair of Patriot PDP ram (512X2 pair)
and it's rated with DDR533 (pc4200)@3-4-4-8@2.8V

i manage to get my P4 2.8E to run 1:1 ratio till 3.78Ghz (14*270=3780).
the ram is still with me. if anyone interested pls pm me ok.

i'm now onto AMD for much better ram latency but not that high core clock, but still with
great DDR1 ram, my Corsair 3500LLPRO 2X1GB, which i feed it 2.75V to run 2.75Ghz with my Opty170, with 2.5-3-3-7
(which is PC4400, DDR550 rated) really happy with the ram.





This post has been edited by overclockalbert: Sep 27 2007, 04:14 AM

u have more head room to OC. go ahead.

---

Added on September 27, 2007, 11:15 pmHi fylon, Mosel chipset normally able to hit max 250Mhz no problem but abit hard to go higher. it had the advantage in Intel P4 system but somehow can't perform well with AMD . must be some compatible issue there.

i once own Mosel chipset DDR1 (the XMS 3200PRO 1GB TwinX kit) which able to get me 250Mhz fully stable.
had sold the chip very long time ago.

---

Added on September 27, 2007, 11:19 pm@bro cusx, the only to OC your P4 system was only adding the fsb. u don't have 2nd way to OC your system as
all the functions are lock in P4 processor, unless, u got the P4 extreme edition chip, taht u can change the multiplier,
hence, create more head room for your OC.

---

Added on September 27, 2007, 11:31 pmbro sang,

i have no idea what u descripe above, anyway a picture says a thousand word, just post a screeny and i'll be
able to help u better.

as for the freeze issue, for sure that your system suffer from too high OC, aka CPU clock need to lower abit.
try to lower the fsb from 250 to 220, which still stick with 5:4 ratio, as i descripe in my 1st post, try to find the max stable of your
cpu before proceed to 1:1 ideal setting.

Happy OC-ing


rgds,
Albert

This post has been edited by overclockalbert: Sep 27 2007, 11:31 PM

anyone have any NEW OC attempt????

i though he was going to the dark side already !

bro, get the PDP, as i have them. they perform better imo.

igreen should be fine with your system. 550W right?

@pengster, your case might as well your ram not getting enuf vdimm.
try pump 2.85v and see how.


happy holiday to all.

if anyone is looking for XP-90 (Alu fins with nickel plated blocks)
i have 1 to offer.

---

Added on October 17, 2007, 2:49 amBro, what ram are u using ??? Corsair with BH5 chips? or TeamXtreem BH5?
IIRC, BH5 will need at lease 2.8V to perform well (althought it was rated at Jedec spec of 2.5V stock vdimm)
it might get frequent freeze or error when u get lower then 2.8V under load or prime or memtest.

another thing to watch out was your PSU voltage line, when your system under load, look out for 5v 3.3v or 12v line voltage
drop. most chapalang psu will have voltage drop issue, which might resulting a system freeze or reboot.

in your case, since your mobo limiting u for setting higher vdimm, u better off selling the BH5 and get TCCC instead.


rgds,
Albert




This post has been edited by overclockalbert: Oct 17 2007, 02:49 AM

@overclockalbert
just noticed that you have change HFS. TR ultra120 extreme my dream HFS

[/quote]



the ultra120 extreme really perform way better then XP-90. way better ....

some more with 120mm fan which more quite. the 92mm fan i used with xp-90 now lying/sleeping silently

@FYLON, nice 478 setup.

anyway, yr XMS using what chip? and iirc, p4p800se have no issue with the common xms, just maybe tricky BH5/6 will kacau abit.

A). Both 256mb D43 chip = Can boot into windows flawless
B). Both XMS Versel chip = CANNOT boot at all. Just a blank screen i got
C). Mixed both all stick of ram togther (XMS @ 1st & 3rd slot) = Same as above
D). Put 1 of the D43 at 1st ram slot and xms on slot 2 & 4 (dual channel) = Can boot but before get into windows it restart. Try 10 times 10times like that.
E). Both D43 on 1st & 3rd slot and XMS @ 2nd & 4th slot = Boot to POST screen and hang.. Like hdd failed to detect.





Hi Fylon

this is a very weird problem with P4P800SE mobo.
if u can boot into windows with both D43 dual channel, then your mobo should be no problem.

try below :

clear Cmos, using 1pcs D43, boot into windows, save all setting then log off.
try with D43 dual channel, boot into windows and try run some stress test prime or SuperPi to test stability.

2nd.

try to put 1pcs XMS into the ram slot, only 1pcs and try to boot. see what happened.

if ok,

install another pcs of XMS to make it dual channel and boot.

(make sure u have all the related setting like vcore, vdimm, ram timing set to default to filter out the other potential which could
cause the problem)

iirc, 800SE was a very EZ board to cater, just if u got the bad apple, u just have to let it go and get another, or..........
just stick with what u have, ok.


rgds,
Albert