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OC prob 200mhz increase = unstable

Last response: in Overclocking
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July 28, 2004 5:28:04 PM

i overclocked my pc lastnight not by much only 200mhz and windows was now unstable randomly restarting, longest it was on for was 5min.

i havent got a heat issue as the cpu was only up by 1-2c for a total of 37c ish.

other temps:

cpu 37c
heat sink 27.5c
case 21c
hdd 38c
psu 30.5

i put my DRAM Frequncy upto 215 which = 3001mhz

Spec.

p4 2.8e
2x 256mb pc3200 ddr400 twinmos (2.5, 6, 3, 3)
asus p4s800d
ati 9800pro 128mb 256bit
creative audigy 2 platinum
hyper 6 cooling


infomation from cpuz

core speed: 2800.9
multiplier: 14
fsb: 200.1
bus speed: 800.3
voltage: 1.432

If u do things right.... People won't be sure you've done anything at all......
July 28, 2004 5:46:05 PM

loosen your RAM timings / increase the voltage to the RAM / CPU

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July 29, 2004 12:26:14 AM

Ditto, try 2.5,3,3,7 for timings. Your timings look wierd for a P4 platform.

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July 29, 2004 7:12:45 AM

ok will lower ram timings, about the ram voltage i dont know what to set it to, at the moment its set to auto. i dont think i can change my cpu voltage as the option is blacked out and it skips past it when i go to highlight it (configure system frequency/voltage) is this the right option?

If u do things right.... People won't be sure you've done anything at all......
July 30, 2004 10:10:28 AM

up it to 2.7. If you need even more, you can do 2.8 "safely".


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July 30, 2004 5:30:21 PM

right, didnt have 2.7 or 2.8 option so only had incremeants of 10 but ofset by 5, so i set it to 2.75

ran ok for about 3min, heres the info i got

Field Value
CPU Properties
CPU Type Intel Pentium 4E
CPU Alias Prescott
CPU Stepping C0
Engineering Sample No
CPUID CPU Name Intel(R) Pentium(R) 4 CPU 2.80GHz
CPUID Revision 0F33h

CPU Speed
CPU Clock 3014.71 MHz (original: 2800 MHz, overclock: 8%)
CPU Multiplier 14.0x
CPU FSB 215.34 MHz (original: 200 MHz, overclock: 8%)

CPU Cache
L1 Trace Cache 12K Instructions
L1 Data Cache 16 KB
L2 Cache 1 MB (On-Die, ATC, Full-Speed)

Motherboard Properties
Motherboard ID 63-0603-009999-00101111-052604-SIS655FX$100XX001
Motherboard Name Asus P4S800D (5 PCI, 1 AGP, 1 WiFi, 4 DIMM, LAN)

Chipset Properties
Motherboard Chipset SiS 655FX
CAS Latency (CL) 2.5T
RAS Active Time (tRAS) 6T

BIOS Properties
System BIOS Date 05/26/04
Video BIOS Date 04/01/21
DMI BIOS Version 1006.003

Graphics Processor Properties
DirectX 4.09.00.0902 (DirectX 9.0b)
Video Adapter ATI Radeon 9800 Pro (R350)
GPU Code Name R350 (AGP 1002 / 4E48, Rev 00)
GPU Clock 378 MHz
Memory Clock 338 MHz

Sensor Properties
Tsystem 29 °C (84 °F)
Tcpu 38 °C (100 °F)
Fcpu 2377 RPM
Vcore 2.21 V
Vaux 3.10 V
Vio 3.20 V


If u do things right.... People won't be sure you've done anything at all......
July 30, 2004 7:53:38 PM

what have you loosened your timings to?

<font color=blue><font color=red>Blow</font color=red> Dry <font color=red>my ass</font color=red> and call me <font color=red>Eden</font color=red>!</font color=blue>
July 30, 2004 8:38:05 PM

i put them to auto and by spd, what should i set them to?

If u do things right.... People won't be sure you've done anything at all...... <P ID="edit"><FONT SIZE=-1><EM>Edited by evulboo on 07/30/04 09:38 PM.</EM></FONT></P>
July 30, 2004 11:18:48 PM

Look at my previous post. Just don't expect much out of a CO Scottie. They are definitely not the clockers the DO stepping CPU's are.

Abit IS7 - 2.8C @ 3.4 - Mushkin PC4000 (2 X 512) - Sapphire 9800Pro - TT 420 watt Pure Power
Samsung 120gb ATA-100 - Maxtor 40gb ATA - 100
Sony DRU-510A - THAT'S MORE LIKE IT!
July 31, 2004 6:53:37 PM

yep, increase the core voltage. But chances are that chip dont want to o/c.

Unlucky

_______________
STFU
July 31, 2004 8:58:54 PM

just tried 2.5 3 3 7 @ 3ghz crashed while loading, had ram voltage @ 2.75

as for vcore i dont have that in my bios so dont think i can change it

any ideas what i should try?

If u do things right.... People won't be sure you've done anything at all......
July 31, 2004 9:01:38 PM

i cant see why a 200mhz increase is making my system unstable heat @ 3ghz is not going over 40c idle

If u do things right.... People won't be sure you've done anything at all......
July 31, 2004 9:20:59 PM

just found this out bout my mobo:

Vcore can be only increased by 0.1V above the nominal value – this may be enough just for ordinary (non-extreme) overclocking as Pentium 4 processors are not very sensitive to the voltage they receive

Thanks to the SiS655FX chipset, the frequencies of the AGP and PCI buses are locked at their normal values, 66/33MHz.

Our overclocking attempts with the ASUS P4S800D were a bit of a disappointment. The Pentium 4 2.4C processor that we used with this mainboard can speed up to 3.6GHz at 300MHz FSB, but we couldn’t repeat this result on the ASUS mainboard even reducing the memory clock rate to the minimum. It’s hard to tell certainly what was the reason, but the mainboard would lose stability at 255MHz FSB. Moreover, from 240MHz FSB on, you have to use specific memory modules as the system wouldn’t start up with some modules, irrespective of the FSB/MEM divisor, timings and the rated frequency of the modules.

So ASUS P4S800D mainboard can only be used for moderate overclocking. The basic disadvantage of this mainboard is its limited abilities in controlling the Vcore and low stability at the FSB frequency over 240-250MHz



going to go try it see if the 0.1 helps

If u do things right.... People won't be sure you've done anything at all...... <P ID="edit"><FONT SIZE=-1><EM>Edited by evulboo on 07/31/04 10:24 PM.</EM></FONT></P>
July 31, 2004 9:38:14 PM

lol well its offical.... my mobo sucks ass :p  ive had no luck what so ever

If u do things right.... People won't be sure you've done anything at all......
August 1, 2004 2:07:07 AM

It's probably your memory. It's only rated at PC3200. Some PC3700 should get you to 3.2ghz without over-volting your CPU. See if you can borrow some faster sticks to try.

Abit IS7 - 2.8C @ 3.4 - Mushkin PC4000 (2 X 512) - Sapphire 9800Pro - TT 420 watt Pure Power
Samsung 120gb ATA-100 - Maxtor 40gb ATA - 100
Sony DRU-510A - THAT'S MORE LIKE IT!
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a b K Overclocking
August 1, 2004 7:57:01 AM

Your motherboard sux because VIA and Asus have an agreement to make it suck, SiS being VIA's main competitor. You'll notice that chipset issues aren't such a big deal, but the limitted vCore was purposely implemented to hold you back.

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August 1, 2004 6:02:53 PM

i dont think im brave enough to do that :s so im thinking that i should get a new mobo at some point, which brings me to this question.

when a 64bit p4 mobo comes out will it be backward compatible with my 2.8e or will they use a different socket? if they are not i will wait till mid-year next year and buy a new system.

If u do things right.... People won't be sure you've done anything at all......
!