P4 2.4C / Abit IS7-E problem

[mihocu]

P4 2.4C
Abit IS7-E
Corsair TwinX 3200 CL2
Antec 350W
Ati 9600 Pro
Generic 3.06GHz cooler (not important atm, will change it)


At 260 FSB it's Prime stable (well, 1 hour tests). (1.52V vcore, 2.8V vddr, 1.55 AGP)
5:4 and 2-5-3-2 (at 2-5-2-2 it doesn't post)
dual channel
Gat: auto/normal/auto/disabled/disabled

Problem is that at 261/262 it does not move
- set timing to 2.5-7-3-3 / 3-8-4-4 = nothing
- uped vcore (reached 1.8V) = nothing
- set to 3:2 (and again aggresive/lame cl timers)= nothing

I would like to see it at 3.2-3.4 before starting extensive testing and final burn. By then I'll have bought a better cooler)


Any idea what to try? Memory, mobo or CPU? What's the bottleneck?

[larva]

I'd try running in single channel mode (take one stick out) to see if the cpu has any more in it. Your restriction may be the memory, if your modules are CH5 they likely won't do much more. Single channel is a lot easier on the ram and hopefully will reveal something.

[mihocu]

followed your suggestion larva and was able to run it prime stable at 261 FSB (again 1 hour or so). At 262 it hangs up again :(

I should be able to borrow some Corsair TwinX 3700/4000 tomorrow and try with those. CPU or mobo would be more difficult to change.

How do I check if my mem modules are CH5?

[batboy]

What BIOS are you running? If you haven't already done so, consider updating the BIOS.

[ol' man]

Disable the GAT/PAT like crap.

[Mac]

try disabling command per clock cycle in bios

[larva]

Originally posted by mihocu
followed your suggestion larva and was able to run it prime stable at 261 FSB (again 1 hour or so). At 262 it hangs up again :(

I should be able to borrow some Corsair TwinX 3700/4000 tomorrow and try with those. CPU or mobo would be more difficult to change.

How do I check if my mem modules are CH5?

I don't know if there is a good way to tell which chips the ram has without pulling the heatspreaders off. Perhaps some of our Corsair users here might know a way to tell.

It sounds to me like your limitation is not the ram though. Given that you are crashing at basically the same fsb in single and dual channel mode I tend to think you are at the limits of the cpu and/or the power supply.

[Lithan]

Dunno about the C2... but the twinx LL set I had awhile back was ch5. I think C2 pc3200 is overclocked pc2700. I remember hearing that before. But the 5-2-3-2, 5-2-2-2 thing makes it sound like ch5.

[larva]

XMS 3200C2 was originally BH6, but with stuff new enough to be sold as TwinX I think it has to be CH5 or BH5.

[mihocu]

The heatspreaders I can't pull off as I might need to switch them. Btw, the mem sticks I have (CL2) are labeled LLPT.

Updated the bios to the latest version before that. Running now v16 (august 2003 release date)

GAT is set to as lame as possible (auto/normal/auto/disabled/disabled)


read myself through http://forum.abit-usa.com/showthread.php?threadid=13877 but was not able to figure out exactly what I have :/


EDIT: As for the power supply, am thinking to try it with a 480 Antec True Power. That should suffice, right?

[2XS]

don/t feel bad. I have the same MoBo, CPU, and ram. And mine will not post over 263fsb with ram set to 3:2 6.2.2.2. So I opted for mem bandwidth and set my system to 250fsb, 5:4 6.2.2.2 .

Also on the holographic sticker on the ram heatspreader there will be a version number. IE v1.0, v1.1 or v1.2. I have the v1.2 which is the CH5 chips. These chips don't play well with the 865/875 northbridges. Or so I have been told.

So until I get some better ram I will live with the the O/C i have running.