QUOTE(ShuUemura @ Nov 7 2005, 06:17 PM)
I'm having problem overclock my AMD Athlon 64 3800x2....
Here's mY Computer tech:
1. CPU: AMD Athlon 64 3800+ x2
2. Harddrive: Western Digital Cavier 250GB Sata 2
3. Motherboard: ASUS A8N-SLI Premium
4. GPU: 1X MSI Geforce 7800GT TD256
5. Memory: Kingston 1GB DDR400 Dual Channel(Double Sided)
6. Disk Drive: Lite-On Dvd Rewriter
7. Speakers: Creative 5.1 surround speaker Model 5200
8. Power Supply: Cooler Master 550watt PSU
9. Fans: 1x Cooler Master LED Fan 120mmx120mm, 1x I-cute LED Fan 120mmx120mm
By adjusted the CPU Voltage from default 1.3v to 1.4. From 2.0GHZ to 2.15GHZ. Everything seems ok. The idle temp is around 40c and load temp is around 52c. But after i adjusted the CPU voltage ffrom 1.4 to 1.425 watt. And CPU frequency from 2.15ghz to 2.2ghz. The system just crash and show that i need to insert XP cd's coz some files are missing and said need to repair. But after i set the voltage and frequency to 2.15GHZ and 1.4volt. Everything seems fine. So i wondered wut's wrong? Temparature too high? Volt too high? Or???
based on ur mobo, i dont think the problem comes from pci freq unlock.. how bout ur HTT multiplier? u must make sure ur HTT x htt multiplier = 1000 or below.
let say ur HTT is 200, the default htt multiplier is 5x, so 200x5 = 1000. that is default. if u increase ut htt to 220 for example, u've to drop ur multiplier from 5x to 4x.. so that it become 880 (220x4).
201-249 use 4x
250-299 use 3x .. n go on
other tips for oc is increase ur HTT / clockspeed first before increasing ur vcore. goes into windows to test the stability using benchmarks program n if stable go back to bios n increase ur clockspeed again. if the benchmarks program fail or windows cant boot, increase ur vcore step by step. then go back into windows to test the stability. Repeat this until u find ur max oc or u r satisfy with ur oc.
n if u r using el cheapo ram aka non high performance ram, u've to loose ur ram timing. the loosest' timing is 3-4-4-8.
n if u think that ur ram is holding ur processor potential oc, and u want to oc ur processor alone, use ram ratio. set ur ram to either ddr 333, 266 or whatever setting in ur board.. use this website for ur reference :
http://med.tmu.edu.tw/~tacoChang/A64Freq.phphope it helps a lil bit

QUOTE
LPD? MUltiplier? Is it the one with X1-10? Which should i lower it? BIOS?
i think it is LDT (/HTT) multiplier. u can find it in bios. it has setting with x1,x2,x3,x4,x5 and auto.
This post has been edited by irenic: Nov 7 2005, 09:10 PM