Cannot push past 220 FSB with 3.0E D0 and PC4000 RAM.

No_Style · Mar 15, 2005, 06:29 PM

As the title suggests, I'm having a great deal of difficulty getting past 220 FSB. If I start pushing past that mark, I receive BIOS errors. The error I'm getting is "Bad Bios Checksum. Starting recovery..". This error also appeared with my previous motheroard, the P4P800 Deluxe. I slipped in the original CD and that killed the BIOS and it no longer works. (So I picked up a P4P800-E Deluxe)

Here are the relevant specifications:

Asus P4P800-E Deluxe
Intel P4 3.0E D0
2 x 512 MB OCZ PC4000 Gold Rev. 2 @ 2.5-3-3-8 w/ 2.85 V
OCZ Modstream 520W
Zalman CNPS 7000B
MSI RX9800 PRO modded as a 9800XT
ThermalTake Tsunami Case w/ side window and side intake
SB Audigy 2
2 x 200 GB Maxtor DiamondMax10 SATA HDDs
1 x LG DVD Burner

I should also note that all those parts are brand new.

BIOS settings include:

Memory Acceleration: Auto
Performance Mode: Standard
Spread Spectrum: Off
ICH Delayed Transaction: On
MPS Version: 1.4
AGP Voltage: 1.6 V

I've tried the following things:

- Raised core voltages up to 1.5
- Raised AGP voltage up to 1.8
- Loosened memory timings to 3-4-4-8
- Used the 5:4 and 3:2 dividers
- Tried disabling USB Legacy Support
... I'll include more things I've tried as I remember.

I'm totally stumped here.

If more details are needed, ask away.

itchy5 · Mar 15, 2005, 07:22 PM

well that blows man

it should work i got nice OC out of my prescott

250x16 but i cant really think of anything you didnt try, 1.5 Vcore should get you stable to 3.6+ maybe you CPU is a reject

sry man

Necrosis · Mar 15, 2005, 07:43 PM

Very weird since these normally OC pretty well.

Um...1.8v for your agp is a little high.

What is the rest of your specs?

No_Style · Mar 15, 2005, 07:49 PM

Yes, 1.8V is pretty high, but it's not at that level at the moment. It's just what I've tried.

Other things include:

MSI RX9800 PRO modded as a 9800XT
ThermalTake Tsunami Case w/ side window and side intake
SB Audigy 2
2 x 200 GB Maxtor DiamondMax10 SATA HDDs
1 x LG DVD Burner

I previously had PC3200 Corsair XMS TwinMOS and the system gave that error as well , but after an incident with a PSU power connector and one of my HDDs catching on fire, (Do a search on DH and you'll find the thread) I received a nice pair of PC4000 from OCZ.

Sifting through Google search results and other forums, possibilities such as dying CMOS battery, timings too tight (or memory speed running way out of spec) and too high of an overclock can cause this "Bad BIOS checksum" error. I can safely rule out 2 out of the 3 possibilities. I'm just wondering if I was extremely unlucky and ended up with a dud of an overclocker

farkas · Mar 15, 2005, 08:05 PM

SATA channels 1 and 2 on some mobo's are usually a deterrent to FSB overclock. Especially Asus boards (I have one that's famous for it but other ones here and there have similar issues).

Aside from that, you have the proper RAM and settings to be able to acheive a higher FSB.

Maybe the "Auto" memory performance mode set to auto runs the memory timings a bit to tight. Having it set to manual might help if there is such a setting ?

drakesteakn · Mar 15, 2005, 08:05 PM

RMA it then. its not very nice to do so. but alot of people do.

No_Style · Mar 15, 2005, 08:11 PM

Quote:

Originally Posted by farkas

SATA channels 1 and 2 on some mobo's are usually a deterrent to FSB overclock. Especially Asus boards (I have one that's famous for it but other ones here and there have similar issues).

Aside from that, you have the proper RAM and settings to be able to acheive a higher FSB.

Maybe the "Auto" memory performance mode set to auto runs the memory timings a bit to tight. Having it set to manual might help if there is such a setting ?

The memory performance "auto" setting is for "ASUS Hyper Path" AKA "Intel's PAT", which only kicks in at 200 FSB without mods. The only other option is "Enabled". I'm currently running on IDE. (Forgot to mention that)

No_Style · Mar 15, 2005, 08:13 PM

Quote:

Originally Posted by drakesteakn

RMA it then. its not very nice to do so. but alot of people do.

I considered it. But I rather give up than RMA it since it would mean I'll be sitting here without a PC for quite some time and I may have to shell out money for shipping. Trying to conserve the funds after some expenditures.

pr0digal jenius · Mar 15, 2005, 08:32 PM

What are the jumper settings on your mobo like....manyasus bords have a 6 prong/2 jumper section that control FSB spectrums...you might try playing with thsoe.

No_Style · Mar 15, 2005, 08:55 PM

Quote:

Originally Posted by pr0digal jenius

What are the jumper settings on your mobo like....manyasus bords have a 6 prong/2 jumper section that control FSB spectrums...you might try playing with thsoe.

Negative. This board is pure BIOS like most modern boards should be.

itchy5 · Mar 16, 2005, 12:22 AM

keep us posted about your cpu, it should be a good OCer... :\ bios update?

Nuke209 · Mar 16, 2005, 03:42 AM

i'm hitting 3.45ghz on my 3.0ghz on the same board with some ehhh corsair ram, diff revisions on each

2.5-3-3-6
voltage on cpu, 1.575
voltage on ram, 2.85

running drives off sata

I'm stuck at 230, but it seems it'll only be at that..soo...i dont think I can do much with mines

No_Style · Mar 17, 2005, 05:15 PM

Quote:

Originally Posted by itchy5

keep us posted about your cpu, it should be a good OCer... :\ bios update?

BIOS is the latest version available.

itchy5 · Mar 17, 2005, 05:38 PM

wow RMA that sucker my D0 OCs like crazy ;P