Asus p4c800-e , default Voltage's ?

[Ny152]

Hey Guys,

A few basic questions on my system:

Asus p4c800-e
3.4 northwood
1024 hyperx pc3200
550 antec psu
6800 gt
air cooled

What are the defaults for these settings. This is what they are currently set at:

agp/pc freq = 66.66/33.33

dram freq = auto

cpu vcore voltage = 1.6000v

ddr reference voltage = 2.65v

agp vddq voltage = 1.50v

A buddy of mine over oc'ed my system and after he did I noticed a slight performance drop in 3dmark 03 and a 1,000 pt drop in 01.

I want to set it back to default to see if that caused the drop in performance. Any thoughts on that?

He put the fsb upto 220, so it at 3.74. And I know he raised the voltages a little.

And should this board be able to run at this speed? But I really what to find out what the default settings are.

thanks

[masterofpuppets]

Of course it can run at that speed. People do over 5GhZ with that board (with mods of course). And gettin a drop in 3dmark sounds wierd. You should be gettin 1000 points extra. Maybe the divider was set to 5:4 or summin. You gotta set the DRAM Frequency to 400 which switches the divider setting to 1:1. I dont know why they name dividers with the dram frequency as 400 cos that isnt the frquency when you overclock. But that's how they name em anyway.

[Ny152]

I wish I could understand most of your post :)

But I did bump that DRAM Freq up to 400 from Auto and that bumped me up to 20,400 in 01 and 12,200 in 03 .

What exactly is dram? And I take it 400 is the best setting to put it at? with my spec.

Anything else I should change?

thanks

[masterofpuppets]

1:1 is the best divider to use with intel setups. It means the processor is the same speed as the fsb generally. Each stick on each channel will run at 200mhz stock speed. Each dimm gets 200 mhz and there is 400 for each channel which adds up to 800 which is the bus speed. The divider is CPU : DRAM. If the divider is 3:2 or 5:4 - can't remember but I had this experience ages ago. I think it was 3:2 actually. It would have the memory modules as 150mhz. But when I set it upto 1:1 the memory was 200mhz. DRAM just means DIMM RAM I think. Asus uses an obscure system for naming dividers. 400MhZ is 1:1. The next one down is 5:4 and the one below that is 3:2 if im not mistaken. Haven't tested it much except from 3:2 by accident and 1:1 usually. Hope that clears it up. So, to get best results with your 3.7GhZ clock use these settings:

220 FSB

400 DRAM (1:1 in other words)

Whatever voltage stock is since it should be ok, maybe raise it by a tiny bit until it is stable but dont go too far.

ddr at 2.75 or 2.85, whatever one is most stable.

Leave everything else alone like memory timings and other stuff until you know enough about it.

[masterofpuppets]

Also, if your cpu temp goes over 58C (50C should be checked as well) then restart straight away and set the overclocks back to default. I can run my 3.4EE at 58C with no problems, but the maximum thermal spec of Pentium 4's is usually around 62-67C. If it goes over 60C then you MUST HARD SHUT DOWN IMMEDEATLY AND RESET SETTINGS TO DEFAULT! If you don't you will fry that chip!

[Ny152]

ok, 2 questions them :)

1. whats a good program to use to check cpu temp? I think theres on on my asus driver disc, is that ok?

2. cpu vcore voltage = 1.6000v

ddr reference voltage = 2.65v

My buddy raised these up a bit do you think that they are alright or should I lower them?

So, what are the default voltage settings?

Thanks

[Jupiler]

1. ASUS Probe is fine.
2. 1.60V = 1.648-1.664V idle and around 1.52-1.55 load. Droop mod is recommended to stabilize the voltage.

2.65V is OK. Board gives 2.85V max.

Default voltage is 1.525V (depending on which cpu is used)

[craig588]

yeah, if you even want to think about overclocking the P4C800E-D you need to do both the Vdimm and droop mods. It takes the board from a ok board to a great board.

The NB voltage tracks the Vcore so you don't really need to do a vmod to the northbridge.

The VTT also tracks the Vdimm really well, up to 3.7 in my personal exeriance, but I'm sure other people have taken it to 4V.

[masterofpuppets]

The droop mod is one of the most important mods you can do to the P4C800-ED. The vdimm is important as well as the crappy bios only allows upto 2.85 vdimm which sucks.

[Ny152]

Ok, this is the first time Ive ever OC'ed a cpu so I appreciate it if you bare with me on my questions :)

Basically , I want to OC it, but I dont want to push it to the point where I might fry it. So I just want to go high enough where I dont have to worry.

Now questions :^)

1. what are is the droop, and vdimm mods? What are there purpose and where do I get them? How do I actually apply them?

2. my ddr volt is 2.65, my board goes up to 2.85... Do I want to set it to 2.85? Will it improve my performance greatly? Will it put me at a much greater risk of breaking something? Or should I just leave it?

3. I put in Asus Probe and it looks like my cpu temp 30c - 35c idle and I played a fps and it looked like it went up to upper 40's. Does this sound about right?

3. I have this Asus update program to. Do I want to update it using that? Or leave it be?

thanks

[masterofpuppets]

1. Droop mod stops the vcore (cpu voltage) from fluctuating which can make system unstable. Vdimm mod increases the memory voltage beyond what the bios can change. Very useful if you are doing major overclocks. There is many guides on the net on doing these, but you need to be good at soldering otherwise you will completely muck everything up. Your first o/c shouldnt need any mods so leave these alone for a while.

2. If you want overclocks of like 3.7GhZ which is normally the max you can do with the stock cooler in most circumstances, set it to 2.85. lower could make you unstable. My system gets very unstable at 3.7 unless I set the memory to 2.75, but 2.85 is to be on teh safe side in case it fluctuates.

3. 30-40C sounds ok. When you overclock slightly, expect this to reach 50-55C. Any higher and you will want to step down a little bit.

4. To update your bios, use the EZFlash program built into the mobo or the update program which they put on the cd. You probably won't need to update your bios unless it is older than 1012. Any older and you will want to download the latest from asus's website. To update it, read the manual on the site and the one which comes with your mobo.

[masterofpuppets]

Also, as you can already safely oc to 3.7. Keep it at that for now and use the settings that I told you earlier. Those settings work fine with me.

[Ny152]

ok, thanks

my bios is version 1009.001 so should I update? What benefit will I get from upgrading this?

I took off the stock cooler and put on this $50 Zalman HSF.

And you would recommend putting my ddr volt to 2.85 or 2.75? And this won't be any worse in the long run? Just improved system stability?

[masterofpuppets]

2.85 would be on the safe side.

[masterofpuppets]

Also, if you can oc ok with your current bios, just leave it as the current one.