Asus P5B (vanilla) Overview

[daimaah]

If you're using the Intel SATA ports, then it won't show you the SATA drives in that JMicron screen.

I have a newbie question though. I have Intel C2D E6300 and some Corsair RAM, TwinX 2x512 5400 C4 (675 MHz). I'd like to know how to overclock it slightly so that my memory will run in sync with the processor (now it runs in 4:5 ratio, I think, processor at 266 and memory at 333). I'd like to run both in 333. The problem is that when I change the settings in BIOS and save, I just get a blank screen and nothing happens. I have changed the CPU Frequency to 333 and DRAM Frequency to DDR2-667. I've also tried "locking" the PCI-E Frequency to 100 MHz and PCI Clock to 33.33 MHz, but that doesn't change a thing. I'm only looking for a very small overclock, for now and I can't even get that to work.

[saboya]

If you're using the Intel SATA ports, then it won't show you the SATA drives in that JMicron screen.

I have a newbie question though. I have Intel C2D E6300 and some Corsair RAM, TwinX 2x512 5400 C4 (675 MHz). I'd like to know how to overclock it slightly so that my memory will run in sync with the processor (now it runs in 4:5 ratio, I think, processor at 266 and memory at 333). I'd like to run both in 333. The problem is that when I change the settings in BIOS and save, I just get a blank screen and nothing happens. I have changed the CPU Frequency to 333 and DRAM Frequency to DDR2-667. I've also tried "locking" the PCI-E Frequency to 100 MHz and PCI Clock to 33.33 MHz, but that doesn't change a thing. I'm only looking for a very small overclock, for now and I can't even get that to work.

You have to change DRAM frequency to DDR2-533 (1:1). Setting DDR2-667 you're giving setting a 4:5 FSBRAM ratio, which means you mem is actually running at 500mhz :o

Also, you may have to increase your vmch to 1.3 or 1.35v.

[ryandinan]

I have a newbie question though. I have Intel C2D E6300 and some Corsair RAM, TwinX 2x512 5400 C4 (675 MHz). I'd like to know how to overclock it slightly so that my memory will run in sync with the processor (now it runs in 4:5 ratio, I think, processor at 266 and memory at 333). I'd like to run both in 333. The problem is that when I change the settings in BIOS and save, I just get a blank screen and nothing happens. I have changed the CPU Frequency to 333 and DRAM Frequency to DDR2-667. I've also tried "locking" the PCI-E Frequency to 100 MHz and PCI Clock to 33.33 MHz, but that doesn't change a thing. I'm only looking for a very small overclock, for now and I can't even get that to work.

You are correct - at stock speeds (266/333) your memory is running the 4:5 divider. If you bump up your cpu to 333, you'll have to switch to the 1:1 divider. Just be aware that as you bump up your cpu frequency, your memory frequency will increase in proportion to the current divider you have set. With a 333 cpu frequency, you'll want to pick the option in the DDR frequency list that shows "667 MHz".

Since you are overclocking your FSB as well as your CPU in this scenario, you may have to increase your FSB termination voltage, as well as your CPU core voltage - possibly even your DDR voltage.
FSB termination voltage was a biggie when I was overclocking - I have mine set at the max.
With Corsair memory, you can safely go to the max of 2.1v. I have found this necessary (even when keeping your memory in-spec) when you overclock the FSB, as it places extra strain on your memory.
I'd increase your cpu vcore value to 1.35 - 1.4 for starters; you can always back it off until you start noticing stability problems.

Disable frequency spread spectrum in the jumperfree config area, and disable static read control under the "chipset" section where your DDR settings are. You may also want to configure those timings manually, as the defaults for Corsair memory are incorrect (there were for me at least). You may want to visit Corsairs website for the timings for your memory. They'll give you the first set (5-5-5-15 for example) - but you'll also need the last set. For my XM2S DDR800, my timings were 5-5-5-12-6-42-3-11-5-14 (the last 6 values were all default to 10 in the BIOS, whiched caused stability problems until I changed them). There is a utility out there called "memset" that runs under Windows, that reads your memory timings correctly - you run it on a stock setup, then get write the timings down. When you go to overclock, manually set up those values for your memory.

Hope this helps!

-Ryan

[CrAsHeR]

Hi people,
Someone can help me?..
Today i've bought an Asus P5B + E6300..i've just ordered from the USA a 2x1GB DualChannel KIt from MICRON (OEM) Pc2-4200 533Mhz with Fat Body D9DQW (128Mx64)..Does anyone know if they are compatible with the mainboard? I really need help..thanks

[ryandinan]

Hi people,
Someone can help me?..
Today i've bought an Asus P5B + E6300..i've just ordered from the USA a 2x1GB DualChannel KIt from MICRON (OEM) Pc2-4200 533Mhz with Fat Body D9DQW (128Mx64)..Does anyone know if they are compatible with the mainboard? I really need help..thanks

That should work, but it's on the slowest end of the spectrum. You won't have any headroom to overclock, since you will be extremely limited in the dividers you can work with. But, if you're not planning to overclock, they should work!


-Ryan

[CrAsHeR]

That should work, but it's on the slowest end of the spectrum. You won't have any headroom to overclock, since you will be extremely limited in the dividers you can work with. But, if you're not planning to overclock, they should work!


-Ryan

Anyone with a more sure conclusion? I'm feared from the fact that i read "128Mx64"..They shuould be High Density Memory..and i don't know if the board support them..
As for the overclock..they are "Fat body"..Nothing else to say

[ryandinan]

Anyone with a more sure conclusion? I'm feared from the fact that i read "128Mx64"..They shuould be High Density Memory..and i don't know if the board support them..
As for the overclock..they are "Fat body"..Nothing else to say

What website did you buy this memory from? If you could post a link so I could check it out, it would be easier to see exactly what it is...
The Asus P5B DOES support 533MHz DDR2 memory - but some makes/models have problems. Most people here would recommend Corsair DDR2 memory...

-Ryan

[CrAsHeR]

What website did you buy this memory from? If you could post a link so I could check it out, it would be easier to see exactly what it is...
The Asus P5B DOES support 533MHz DDR2 memory - but some makes/models have problems. Most people here would recommend Corsair DDR2 memory...

-Ryan

It's from ebay.. That's all it's wrote:
Brand NEW - OEM (MICRON)
2x1GB KIT DDR2 PC2-4200 533MHZ
Cas Latency: CL4
Voltage: 1.8vv
240-pin DDR2 DIMM, Non-ECC, Non-Registered
Organized as: 128Mx64
Chip:5CA32 - D9DQW

That's all... anyone can help or had any experience with those modules?

[daimaah]

Hope this helps!

-Ryan

Thanks, it sure did. I have a few questions though if that's ok.


Would these settings be ok?

AI Tuning: Manual
CPU Frequency: 333
DRAM Frequency: DDR2-666 MHz (My Corsair RAM is rated at 675...)
PCI Express Frequency: 100
PCI Clock Sync Mode: 33.33 MHz
Spread Spectrum: Disabled
Memory Voltage: 1.9 (I read on Newegg comments that at 666 it requires 1.9)
CPU VCore Voltage: 1.35 (That's the highest voltage I've seen it get in Auto mode)
FSB Termination Voltage: Auto (I suppose this should be set to max, what's this for? And is it dangerous to set it high?)
NB VCore: Auto (NB tends to get very hot but system is stable)
SB: Auto
ICH: Auto (I cant recall having this on my P5B Vanilla).

Also, I was not able to find those timings at Corsairs website, only 4-4-4-12.
And, people talk about divider and I've seen such thing on some other mobo's bioses, but P5B only gives the options shown on that pic.

And thanks in advance, I'm on a high learning curve to overclocking

[ryandinan]

daimaah,

I noticed in your pic that you have your CPU set to 533, and your DRAM frequency set to 1066 -- Both of these are far too high for your hardware.

So, starting from a default setup, go in and pick the lowest DDR frequency available in the list (this should be 533MHz). Then proceed to raise your CPU frequency up from 266MHz towards 333MHz. As you raise your CPU frequency, you'll also see the DDR frequency raise proportionally. STOP raising the CPU freq. when the DDR freq hits "667MHz". If you go over this, you'll be running your memory at a higher speed that what it is rated, and will probably cause stability issues.

Good luck,

Ryan

[daimaah]

Hi, I took the picture from another thread here at xtreme systems, that's why I wrote the text and entered my numbers there.

[Counter CS]

http://support.asus.com/download/dow...n-us&model=P5B

Beta Version 0904

2006/12/01 update

Description P5B Beta BIOS version 0904
1. Support SLP2.0 string
2. Fix HCT unreported I/O and memory issuse
3. Enable USB disable support
4. Fix conroe L XD function cannnit be disabled issue