e2200 on P5G4IC-M LX

Hi - Newbie here.

Have read the OC guide 3 times now as well as looking at all the threads about people getting to and beyond 3.0 with this chip but the problem is that I just dont get it!!!

I get that I can raise the FSB and or Multiplier to a certain extent with the voltage limiting this which can also be increased. What really kills me is the RAM and how to underclock it to be able to continue higher. Mine is 800mhz ddr2.

In my Asus bios I have setting like this:

ADVANCED
AI Overclocking - auto - preset - manual (I put it at manual)
CPU freq (the FSB, I uped it to 240)
DRAM freq - auto - 800 - 677(If I put it at 800 then it goes up itself as i raise the CPU Freq so I lowered this to 667 and then raised the cpu freq to 240 so it again set at 800)The rest

The rest of the settings are voltages which I have left at auto FOR NOW apart from PCI Express Freq which is capped at 100.

CPU CONFIGURATION
where I can change the ratio - (for now it is at 11)

This is where I fall down as if I start changing this e.g tring to change to 5,5,5,15 or 4,4,4,12 then I just cant get to the post:
ADVANCED
NORTH BRIDGE CHIPSET SETTINGS
memory remap feature- disabled
config by speed - disabled
dram tcl
dram tras
dram trp
dram trcd
dram twr
dram trfc
dram tetr
dram trrd
dram trtp

This is what I have so far just modifying the freq and changing the setting of the RAM speed:



Please help with what I am missing here

Just leave the DRAM Frequency option set to DDR2-667, which results in a 3.33 DRAM multiplier. So at a FSB of 240MHz, the resultant DRAM frequency is 400MHz (DDR2-800). Although I'm unsure as to why a 3.33 multiplier is the lowest available option, since 800FSB CPUs also support the 2.66 DRAM multiplier = DDR2-533 at the default FSB of 200MHz. And without knowing what model RAM you have, and only going by the JEDEC #3 timings shown in CPU-Z, why are you trying to tighten the timings from their rated 6-6-6-18 at 1.80V to either 5-5-5 or 4-4-4 at 400MHz or higher?

redduc900 said:

Just leave the DRAM Frequency option set to DDR2-667, which results in a 3.33 DRAM multiplier. So at a FSB of 240MHz, the resultant DRAM frequency is 400MHz (DDR2-800). Although I'm unsure as to why a 3.33 multiplier is the lowest available option, since 800FSB CPUs also support the 2.66 DRAM multiplier = DDR2-533 at the default FSB of 200MHz. And without knowing what model RAM you have, and only going by the JEDEC #3 timings shown in CPU-Z, why are you trying to tighten the timings from their rated 6-6-6-18 at 1.80V to either 5-5-5 or 4-4-4 at 400MHz or higher?

Click to expand...

As this was my first OC I think I was getting confused and as I was only given the options of 667 and 800 I thought that I had then to modify the RAM modifiers to get it lower

The Memory is as follows (taken from a dell machine):

Module Name Hynix HYMP112U64CP8-S6
Serial Number 00001292h (2450653184)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-800 (400 MHz)

Memory Timings
@ 400 MHz 6-6-6-18 (CL-RCD-RP-RAS) / 24-51-3-6-3-3 (RC-RFC-RRD-WR-WTR-RTP)
@ 333 MHz 5-5-5-15 (CL-RCD-RP-RAS) / 20-43-3-5-3-3 (RC-RFC-RRD-WR-WTR-RTP)
@ 266 MHz 4-4-4-12 (CL-RCD-RP-RAS) / 16-34-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

Going by what you say the Bios should also give me the option to go to 533, but it doesn't so I am a little more confused. I took the memory up to 840 by increasing the fsb a bit more and that seemed to boot OK & CPU temps were 62 max on prime (32 idle, just 1hr prime, no errors) but I don't want to fry the RAM so it back to 800 and 2651. If the Bios doesn't let me lower the RAM more am I stuck here and therefor should I start lowering the voltage?

Thanks

With the RAM at DDR2-840 and above, make sure to run Memtest86+ to check the RAM for stability prior to attempting to boot into the OS. And you can raise the DRAM frequency without worrying about "frying" the memory. For the most part it's the extreme DRAM voltage that overclockers supply the RAM with that causes RAM to fail, this while trying to achieve the highest DRAM frequency possible. With no DDR2-533 option, your alternatives are loosening the timings, and / or increasing the DRAM voltage to compensate for the higher than rated effective DRAM frequencies.

Thanks for the advise. Will check out the memtest in the morning. I think that loosening up the timings will put me in a whole world of not knowing what I am doing so will just stick with what I have for now as I am starting to get it.

I do have another option though as in another PC I have 2x Samsung M3 78T2863QZS-CE6 1 GB DDR2-667 DDR2 SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz) (3-3-3-9 @ 200 MHz) installed. I could swap them over to see if my Bios gives me more options, would it be worth it for the slower RAM if I could get slightly higher clock? Oh it also has a e4500 so I really could just pop that in too..

Ok I made some changes, and think that I should have asked first...

I now am running a e4500, so the only thing that has changed is the cache as the timings are the same. The RAM however was upgraded to Exceleram value 4gb DDR3 1333 at 9-9-9-24. I then spent 2 days trying to get it to run at 1333 instead of 800mhz at 6-6-6-15 before realizing that the CPU fsb is maxed at 800mhz!!

So now I have more RAM but it is locked in bios too 800mhz which only allows me around 20% overclock rather than around 30% on the DDR2 at 667.

So now for the questions Everest shows restricted RAM rimings as follows:

Memory Timings 6-6-6-15 (CL-RCD-RP-RAS)
Command Rate (CR) 1T
DIMM1: E30107A 2 GB DDR3-1333 DDR3 SDRAM (8-8-8-22 @ 609 MHz) (7-7-7-20 @ 533 MHz) (6-6-6-17 @ 457 MHz)

What is "loosening Ram timings"? Can I reduce the timings from the 6-6-6-15 that SPD have set and therefor gain a little more space to raise the FSB more or am I now more limited now than before with the DDR 2?

The more I think about this the DDR31333 should be able to get to 1333 without a problem. Right now I have everything running stable as follows:



I would really like to like to get her up to 3.0.

I have voltage set to 1.35 in Bios and CPUID is showing 1.28 with prime95. Should I raise the voltage a bit before pushing her further or just keep adding to the FSB as it doesn't post at 260x11?