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DetN8
09-18-06, 02:13 AM
Hi Guys,

After having run in a strudy rig (see Sig) it was time for some overclocking.. (yeah, yeah, how many posts start with that eh?) Anyway, using a combination of the impressive Bios settings on the M2N32, Ntune and CPU-Z I found the maximum stable settings for each component to be:

CPU: 2907Mhz (323HT x9) (not bad for a $130 2.2Ghz - benched better than a FX-57!)
MOBO HT(FSB): 323
MOBO HTT: 1495Mhz (299 x5)
Corsair DDR2 RAM @ CAS 4 (tight timings): 446Mhz (rated 400Mhz at CAS 4)
Corsair DDR2 RAM @ CAS 5 (relaxed timings): 646Mhz (rated 533Mhz at CAS 5)

Anyway, having completed several benchmarks of the system with settings of CPU @ 2900Mhz (290x10) and a 1450HTT (290 x5), the memory was running happily at a low 363mhz CAS4 (set at DDR 533 in Bios instead of DDR 800). So what I thought to do was go into Bios, relax the memory timings to CAS 5 (5-5-5-15-2T to be specific) and increase its frequency by changing the DDR2 533 to DDR2 800, theoretically safe as I had already benched it to the higher frequency.
Anyway - Save bios, exit - 3 beeps, No POST
No drama - reset, enter bios about to change memory back to DDR 533 - HANGS in bios!
ok - now a little nervous... - reset - try to enter bios.. won't get past ASUS AI logo and saying "press del to enter setup)

Ok - thinking BIOS problem, took out the mobo battery, set the jumper to reset the CMOS / Bios..
Reboot - same as above.

Several expletives later.... thinking I had fried the RAM... Bought new RAM (identical) - installed -
Still the SAME - won't do anything other than get to Asus logo "press del to enter setup" screen.

Can anyone please offer me any ideas on whether it is liable to be the Mobo that is fried, the CPU or something else is the problem?

Many thanks,

nekrosoft13
09-18-06, 07:06 AM
its not wise to go over 1000mhz on HTT

HTT is reflected from FSB

and if your FSB was at 323, then HTT = 323X5

DetN8
09-18-06, 07:17 AM
its not wise to go over 1000mhz on HTT

HTT is reflected from FSB

and if your FSB was at 323, then HTT = 323X5

Sorry, Perhaps I wasn't clear, when i tested each component to its max, I turned down all other so as not to interfere. In that case 323 was reached with the CPU to Northbridge multiplier down at x3. So HTT = 969Mhz.

The failure to boot happened after I had already found each max a couple of days ago and then settled on a stable max system overclock of FSB 290 x10, x5HTT

Thanks heaps for the reply though.

nekrosoft13
09-18-06, 07:56 AM
Sorry, Perhaps I wasn't clear, when i tested each component to its max, I turned down all other so as not to interfere. In that case 323 was reached with the CPU to Northbridge multiplier down at x3. So HTT = 969Mhz.

The failure to boot happened after I had already found each max a couple of days ago and then settled on a stable max system overclock of FSB 290 x10, x5HTT

Thanks heaps for the reply though.

290 (FSB) X 5 = 1450 mhz HTT X 2 = 2900mhz

if you had FSB at 290, HTT should be at 3x, so it would be 870 HTT, it should not exceed 1000mhz