PCI/AGP Lock problems

[Goronae]

Right now I have a P4S533 and a 2.0b which I have been able to overcloack to 2460mhz. The problem is at any fsb higher than 123 the compouter refuses to post. I know the P4S533 doesnt have PCI/AGP lock so I set the CPU to 133 fsb which should help the cards run at default speed. The problem is even at 133 the comp wont post even if I push the Vcore up to 1.7 Any suggestions on getting a better OC?

 

[Foxie3a]

Remember that FSB overclocks everything. Including your RAM.

Your RAM may need some more voltage. You could play with CPU:RAM ratios as well.

 

[mtb856]

If you're on air cooling, I'd suggest not going over 1.63V vcore or your temps could get too high, especially for the Northwood "B" which tends to die at times if you take the vcore past 1.7. I'd go with Foxie and say raise the DDR voltage a little- by little I mean .05 or .1V. If you can't change the AGP/PCI clock, then I would say that you are limited to how much you can oc, before you start having problems with your pci components.

 

[batboy]

Technically, there is no 2.0B... I'm assuming he means 2.0A. We need more info about the system, such as what RAM is being used and what other BIOS settings have been tried.

 

[man_utd]

If he is setting to 133 then it's an A. RAM, temps, and cards information will help us.

 

[Goronae]

Sure heres all the system specs I can come up with
CPU: ya Northwood 2.0a (im dumb) OC'ed to 123fsb @ 2460 mhz running 27idle 35load on zalman 6500alcu-b
Motherboard: Asus P4S533
Memory: 896mb total memory
Bank 0 : 256MB DDR-SDRAM 2.0-2-2-5CL 2CMD
Bank 1 : 512MB DDR-SDRAM 2.0-2-2-5CL 2CMD
Bank 2 : 128MB DDR-SDRAM 2.0-2-2-5CL 2CMD
Width : 64-bit
Refresh Rate : 7.80µs
Power Save Mode : No
Fixed Hole Present : No

Memory Module(s)
Memory Module 1 : Nanya NT256D64S88A0G-7K 256MB 8x(32Mx8) DDR-SDRAM PC2100U-233-750 (CL2.5 up to 143MHz) (CL2 up to 133MHz)
Memory Module 2 : Micron 16VDDT6464AG-265B1 A0038BD1 512MB 16x(32Mx8) DDR-SDRAM PC2100U-2533-750 (CL2.5 up to 133MHz) (CL2 up to 100MHz)
Memory Module 3 : Micron 8VDDT1664AG-265A1 6208524B 128MB 8x(16Mx8) DDR-SDRAM PC2100U-2533-750 (CL2.5 up to 133MHz) (CL2 up to 100MHz)
(sisoft sandra info there)

Video Card: 9500 pro 310/300
Sound Card: SB Live 5.1

I've only been tweaking the cpu voltage and fsb speed. After looking at my bad ram should I try to mess with it for stability?

 

[Goronae]

Bump.

 

[GST-97]

First thing I see, is the SPD on the micron RAM is saying CL2.5 up to 133 Mhz, and you are running all 3 at CL2.0 at over 100 Mhz FSB.

you might even be best taking out everything but the one 512 meg stick. more is usually better, but when playing with 3 totally different memories, you might have issues.
Does your motherboard have a FSBRAM ratio that you can adjust? if you can, change it to 5:$ and see if you can go any higher... I would almost bet its your RAM holding you back at those tight of timings.

-Chris

 

[batboy]

I'd work on the RAM issue. Lower CAS number means tighter timings which can lead to instability as you try overclocking. Populating all the dimm slots is not advised. Lose the one 128 meg stick at least and try a RAM timing of 2.5,3,3,6 to see what happens. I think your RAM timings need relaxed.

 

[betterlife18]

Actually... there is a 2.0B ... that's the 2.0 with the 533mhz bus.

 

[batboy]

Intel never made a 2.0 gig P-4 processor with a 533 bus. Go to the Intel s-spec finder (listed below) and look for yourself. There is no such beast. All 2.0 (Willamette) and 2.0A (Northwood) processors are 400 bus CPUs.

http://processorfinder.intel.com/scripts/list.asp?ProcFam=483&CorSpd=ALL&SysBusSpd=ALL&PkgType=ALL