help! new 1.4Ghz wont o/c! :(

[aks93]

Just bought a 1.4Ghz ayhja y cpu pretested to 1600Mhz at Mike's pretested cpus, but it refuses to boot into windows at anything over 140fsb I want to reach at least 150 fsb stable. Heres the story so far, any ideas would be appreciated. Thanks


I have set vcore to 1.85v, vio 2.9v, v101 3.45v. I am considering
vio 3.56v. Are these settings dangerous to the components below?

cpu 1.4Ghz ayhja y trying for 1600+

cpu temp 45c
mb temp 41c
+12v 12.342v
+5v 4.972v
+3.3v 3.36v
vcore 1.872v

Thanks

Specs:
mobo - a7m266 rev 1.04 bios 1.04a
HD - ibm 75gxp 75GB
g/x - Gainward geforce3 with dvi, matrox g400 pci
memory - STEP ThermoDynamics 256 x2 Meg 2.5V PC2400 184-Pin DDR DIMM
power supply -STEP Titanium Series Twin Fan ATX V2.03 Power Supply 605w
cooler - STEP-UP KODIAK 6000 Pure Copper CPU Cooling System For Socket 370 CPU's
SCard - sblive gamer
DVD - pioneer 116
CDRW - plextor 16x10x40
asus ipanel
newq platinum equaliser
monitors - samsung 170T fp, kds 19 avitron crt

So far, only connected cd, hd, vid card, floppy, still same prob!

Tried swapping out dimms one at a time and reversing slots - still no good...

Any ideas would be appreciated at this point?

Thanks in advance<P ID="edit"><FONT SIZE=-1><EM>Edited by aks93 on 08/03/01 11:19 PM.</EM></FONT></P>

 

[aks93]

Its still not o/cin at all....

 

[Crashman]

Try running it at stock spec and tell us the details.

Video killed my Radio Card!

 

[Guest]

my idea would be to send it back to mike and tell him to actually send a chip that hes tested this time,

or the other possibility is hes using different cooling to you.


what temps are you getting at 1.4 ?


or ask Q20 about lack of o/cing with the a7m266




X

 

[aks93]

>my idea would be to send it back to mike and tell him to actually send a chip that hes tested this time
Mike said he pretested this paticular cpu to 1650Mhz on his epox ddr mobo. He has been helping me troubleshoot this cpu today, but we're yet to have any success - he will accept it back, but I only want to send it back as a last resort...

>what temps are you getting at 1.4 ?
cpu/mobo 41/46c - heavy use... its hot in NY!

Crashman
at stock speed cpu boots into windows at 140fsb, above that win protection errors, no booting into safe mode, or hangups...

Thanks for your advice guys...at this point Im open to new ideas?

 

[Guest]

sorry didnt c ur temps first time.

ummm some people are having lots of problems fsb overclocking the A7M266

have you got access to a other socketA machine??
maybe throw it in SDR board and see it it can handle the 1650 your mate is claiming





X

 

[peteb]

the problem is not the cpu it is your system.

Getting the A7M266 to 150FSB is a little ambitious - especially if you are keeping CL2 memory timing.

Your best bet is to modify the 3,4 and 6 bridges of the chip to raise the multiplier. He said it is tested and etc. to 1.6G but he didn't say you'd do it by FSB only... On that board I'd say 140FSB at CL2 is good going, now start raising the multiplier. Youa re a bit stuffed because your board does not have multiplier adjustment so you need to manually set the bridges to force the chip to the right multiplier.

If your temps are 40-45C then have a go at setting 140FSB and 11.5 multiplier.

-* This Space For Rent *-
email for application details

 

[aks93]

Mutman - cant get hold of another mobo until next week, might be too late then to send cpu back if need be. Thats why Im going all out to find out now. Thanks

UDPDATE
Ok I got hold of a plycon golden socket device that allows multiplier unlocking on the a7m266 without modding - here are the results so far:
9x155 ok in windows
x160 posted in windows,looked ok, did not test for long
x165 went into windows, screen looked distorted, think its gf3...
9.5 x 150 ok in WINME
x 152 win protection error, while booting
10 x 145 ok in winme
x 160 posted, mbr corrupt error
11 x 133 ok in winme - currently using this setting
11 x 140 win protection error
11.5 x 133 failed
11.5 x 130 failed
11.5 x 140 failed to post
12 x 125 posted, failed in win
12 x 130 failed

This rarther peculiar cpu is driving me nuts, Im now obessed with getting it to 1600Mhz if possible!

Any ideas guys?

Thanks!

 

[khha4113]

When you increase FSB, you also increase AGP and PCI bus speed (except at 100 and 133MHz FSB). Some of your peripherals (HD, Video card or Sound card,...) may not handle at higher speed.
For example, if you run FSB at 130 MHz, your AGP (Video card) runs at <b>86.6MHz</b> and PCIs at <b>43.3MHz</b>!
Try run at 12 X 133FSB (~1600 MHz), your AGP and PCIs will run at default speeds (66.6 and 33.3MHz respectively).
I have TB 1000C (AXIA core) and I oc it at 133 X 10.5 (1400MHz) with default voltage (1.75V) for a month without problem.

Good or Bad have no meaning at all, depends on what your point of view is.

 

[aks93]

khha4113 -
tried that, it gives windows protection errors, from cold boot, or just hangs at post, at 12 x 133.

Update - Am I clutching at straws? In a vain attempt to reduce mobo temp( cpu/mobo is 50/44C at 11x133 heavy load, closed case), I have today unplugged the big heatsink fan on the step cooler from the mobo and inserted it directly into the power supply. My power supply was sold to me at 605W, so this shouldnt have mattered anyway imo, or should it? I have closed the case to monitor any difference in temps, but there was NO SIGNIFICANT CHANGE

Arrrrrrrrrrrrrrrrrrrgh!

Any ideas about now would be most welcome - thanks!

 

[peteb]

having a mobo temp of 44C means your cpu and chipset are about 10-15 degrees warmer than they need to be. A good case will keep the chipset/mobo within 2-5 degrees of room temperature. If your case is 44 degrees I guess your room is not 40 degrees - right?

If you get your case temp down to 30 or less, your cpu heatsink has colder air and you should see your cpu temps drop 10 degrees or more. THEN you should run mor stably at high temperatures.

Take the case side off and use a regular house fan blowing in to get your case temp to 30 or lower.

If your room actually is that hot then you have a problem and can only do better with refrigeration (Peltier, Kryotech, Vapochill etc.)

-* This Space For Rent *-
email for application details

 

[aks93]

Peteb, thanks for your observation, the only trouble is I cant really afford a kyrotech. Those temperatures I quoted you were with the case open! Yes its hot in ny
Im fresh out of ideas, Mike at Mike's pretested cpus, who I bought this cpu from, has kindly offered me to take back this cpu..and Im thinking about returning it...

UPDATE -

out of sheer desperation to o/c this cpu n I have ordered from newegg a gigabyte ga7xdr, and from another vendor an sk8 with a 8000rpm delta fan. If this cpu doesnt o/c with these goodies, what do you think I should do? Ive plain given up hope of ever o/cing it with my asus a7m266....

 

[peteb]

well, good luck with the new mobo - I honestly suspect that temps are more your problem than board type or cpu issues. The A7M266 does not have a great reputation for o/c due to the multiplier modification omission so good luck with the Gigabyte!

-* This Space For Rent *-
email for application details

 

[aks93]

Update - ..having failed with all possible bios tweaks, fan adjustments, and all sorts of cooling strategies...our intrepid and now 1.6Ghz obsessed o/cer awaits his new gigabyte mobo, sk6+delta cooler.....hehe
Funny as this may sound, for the last 24 hours I have left the pc running at the standard 1400Mhz but at 1.6v, yes 1.6v. At this voltage Im able to use this cpu for everything without problems. Temp under heavy use with case open has been 45/37c cpu/mobo. Thats about as good as Ive had it. Now if only this baby would o/c we would be very happy

Thanks for all who have replied so far. Im still hanging in there, still believing....1.6Ghz is possible...

 

[peteb]

if you are at 45C at 1.6V stock speed you are going to have a real problem getting to 1.6 my friend. You need better cooling.

-* This Space For Rent *-
email for application details

 

[killall]

with amds overclock using the multiplier not the fsb...

you do not strengthen the weak by weakening the strong

 

[lhgpoobaa]

ever thought that it might be your north or southbridge that are giving your errors?
most northbridges have a fan nowerdays to keep em cool.
try booting your pc and blocking cool air directly onto the northbridge and see if it has an effect

Quote from the Hamster: "Why is it that Morons are just smart enough to understand how to breed?"

 

[lhgpoobaa]

P.S. HOLY CRAP! where did u get a 605W power supply!?!?!

Quote from the Hamster: "Why is it that Morons are just smart enough to understand how to breed?"

 

[aks93]

LHGPooBaa - I got the ps from
http://www.step-thermodynamics.com/PowerSupplies.htm
but I reccomend you DO NOT buy it from them. For reasons see here http://www.resellerratings.com/comview.cgi?StepThermodynamics.

All the best