Asus P4C800-E Deluxe + OC/MEM questions

[TeazNutz]

Hi Guys,

My first post is about the Asus P4C800-E Deluxe

I can take the PIV 2.6Ghz @ 3.2 with a 245 FSB and that's stable.
But my mem is running low
please check my link

System score

I now that i have to change my FSBRAM.
But as soon as i want to go from Auto to 320 or 400 Mhz, my system completely freezes or stay's in a reboot-loop.

Does some have an idea what can be wrong

My AGP/PCI = 66/33 fixed
Cpu Vcore = 1.75v
DDR Reference voltage = 2.75v
AGP VDDQ Voltage = 1.80v
DRAM Freqency = AUTO (because of my limitation)
I can run my Kingston PC3200 perfectly with 2-2-2-5 instead of the default 3-4-4-8!

Performance mode = AUTO
Performance Accelartion Mode=Auto


I've tried several Ducth/Belgium forums but they don't have clues either


Please understand that my english isn't all that because i'm from Belgium.

I've got the following configuration.

Antec ATX SOHO Plus 1080AMG
True Power 430Watt
Asus P4C800-e Deluxe
PIV 2,6Ghz
2x512MB Kingston pc3200 2-2-2-5
2x120Gb S-ATA Seagate Barracude 7200/8MB
ATI Radeon 9800 Pro
NEC MultiSync LCD1760VM 17"
Plextor PX-708
Samsung 16x48 DVD
Casefans 3X80MM
Operating System Windoxp XP SP1

 

[Thor86]

Use Memtest86 to test your ram settings, timings.

You can also use memory frequency 266 (3:2 ratios), and try for a higher fsb.

 

[JCase]

My experience with the "auto" ram speed setting on my p4c800-e had the ram running at a very low speed. If your system is stable at the auto setting, and you want to go higher or up the ram speed, then you're going to need faster ram. I have my ram speed at DDR320 (5:4)right now with the fsb at 240, which puts the ram at 192mhz. I had already ran everything at stock speeds for a while, so I knew my ram (OCZ pc3200) was very capable of its rated DDR400, and decided not to push the memory any further. With this setup I get a sandra rated bandwidth of 5200+...

 

[Camofrog]

mine is a P4P800 but is very similar i had that same prob it does not like to run the memory at 1:1 (or the 400mhz speed) when overclocking unless you get some faster ram, i set mine at;

cpu fsb = 250mhz
My AGP/PCI = Auto
Cpu Vcore = 1.5875v
DDR Reference voltage = 2.85v
AGP VDDQ Voltage = Auto
DRAM Freqency = 320mhz (5:4 ratio)
I run my GeiL PC3200 with 2-3-3-6 instead of the default 2.5-4-4-8!

Performance mode = Turbo
Performance Accelartion Mode=Enabled

my score in Sisandra is ~5200 if I remember right

run the memory test and you will see the memory is actually running at 400mhz even tho BIOS is set different because you have up'd your fsb

 

[Duvie]

Beware that 1.75v is way too much for these chips if you want them to last and are not running a water cooled system or vapochill...

1.75v on an asus mobo often means more as it overvolts....

Drop that down to 1.6v in bios max for about a 1.65v actual....

 

[JCase]

Good call Duvie! I didn't even notice his vcore was so high. These chips really don't seem to need much voltage at all, and upping it doesn't seem to make a difference once you hit a wall. Teaz, you should definitely set your vcore MUCH lower in the bios (1.575 should be sufficient), especially since the asus boards overvolt (mine is set to 1.575 and asusprobe often reads it as 1.63...). What kind of temps are you getting?

 

[TeazNutz]

Originally posted by: Duvie
Beware that 1.75v is way too much for these chips if you want them to last and are not running a water cooled system or vapochill...

1.75v on an asus mobo often means more as it overvolts....

Drop that down to 1.6v in bios max for about a 1.65v actual....

Okay, it's back @ 1.6v
Thanks for the info, i think that my memory is the bottleneck.

Thanks for the great help already, i'm gonna try some things and keep you posted!!!