abit nf8 doesn't like tccd?

[high5]

today i tried to see what can my abit nf8 do in terms oc-ing. the board it self did extremely well, reaching 320 htt with no problems whatsoever. i have a feeling it could do even better...

http://img250.echo.cx/img250/3074/320htt5lf.th.jpg (http://img250.echo.cx/my.php?image=320htt5lf.jpg)

please note that i didn't go for high cpu oc, but rather for high htt.

however, i had an odd experience regarding my ram. its corsair xms 3200c2 v4.1, tccd based. it can do 2.5-3-3@265 in my friends' prescott rig with no problems. but i couldn't make system stable with ram at 240 and up. it would give me a bsod minute or so after getting in windows. i'm puzzled. is it possible that nf8 simply doesn't like tccd? dunno if it matter, but my tccd doesn't utilize brainpower pcb and is early production tccd. didn't remove the heatspreaders to see what ic's tccd rev is, but corsair manufacturing date is 0418.

any similar experiences and/or suggestion?

thanks in advance

[tictac]

NF8 bios only offer limited Memory timing option... :-/

take A64 tweaker memory timing screenshot at 240MHz and post it here... :)

anyway...nice HTT there... :clap:

[high5]

thanks for replying tictac.

hopefully i'll post tweaker screenie tomorrow, i'm back @stocknow. i'm not sure i'll be able to do it @240, but i'll try it to be as close as possible.

as for limited timings options, my friends asus p4 has no more options yet we were able to make it work @265 2.5-3-3. i don't think thats the reason, there has to be something else... maybe i should try with newer production tccd.

btw, is there any posibility you could make bios for nf8?

[high5]

alright, here's the deal with tweaker, this is stock:

http://img110.echo.cx/img110/2740/cpuz2005cf.th.jpg (http://img110.echo.cx/my.php?image=cpuz2005cf.jpg) http://img110.echo.cx/img110/3489/tweaker2002nc.th.jpg (http://img110.echo.cx/my.php?image=tweaker2002nc.jpg)

230, both windows superpi & memtest #5 stable:

http://img110.echo.cx/img110/1184/cpuz2306hm.th.jpg (http://img110.echo.cx/my.php?image=cpuz2306hm.jpg) http://img110.echo.cx/img110/6137/tweaker2304ti.th.jpg (http://img110.echo.cx/my.php?image=tweaker2304ti.jpg)

now the interesting part, 235 memtest #5 no errors but superpi gives is unable to do the calculation. tweaker screenie is exactly the same as 230 one.

changing command rate to 2t gets me stable by all means again. i tried upto 250, didn't bother for more simply b/c i do not even consider running 2t. screenies:

http://img110.echo.cx/img110/7650/tweaker2352t2rt.th.jpg (http://img110.echo.cx/my.php?image=tweaker2352t2rt.jpg) http://img110.echo.cx/img110/3919/cpuz2505ke.th.jpg (http://img110.echo.cx/my.php?image=cpuz2505ke.jpg) http://img110.echo.cx/img110/9381/tweaker2502t3zr.th.jpg (http://img110.echo.cx/my.php?image=tweaker2502t3zr.jpg)

could this be cpu's fault? its newcastle cg 3000, codes are:

ada3000aep4ax
cbaec 0435vpdw
1102625i40361

please, if you have any experiences and/or suggestions, they are welcome.

and one more thing, bios voltage section has option called 'ddr ref voltage' that defaults to 1.24v. i didn't touch b/c i usually don't mess with things i'm not familiar with. :) anyway, any ideas what does it do?

thanks in advance

[Skyline GT-R]

Or maybe it's your Newcastle that doesn't like TCCD. At least that's my problem... With 2x256MB TCCC I can reach easily 250MHz, but with my Corsair 2x512MB XL TCCD I can't pass 225MHz :(

[high5]

thats interesting...

but it doesn't seem to like 1t, as you can see 2t goes no problem. did you try with 2t?

[tictac]

OK... try this timing on your 230MHz setting with the tweaker...
Clock up the with clockgen... :)

Read Write Qued Bypass : 16
ByPass Max : 7
Max Async Latency : 9ns
Idle Cycle limit : 256clock

DDR RAM Voltage : 2.8v
DDR Ref Voltage : 1.33v

[high5]

will do, sir! :D

i'll let you know the results when i'm done.

[high5]

OK... try this timing on your 230MHz setting with the tweaker...
Clock up the with clockgen... :)

Read Write Qued Bypass : 16
ByPass Max : 7
Max Async Latency : 9ns
Idle Cycle limit : 256clock

DDR RAM Voltage : 2.8v
DDR Ref Voltage : 1.33v
i'm done. however, i had some more odd experiences...

at first, i applyed 2.8v vdimm and 1.33v ref voltage and set my cpu to 230x8. once i got into the win, i tried superpi just to see i there's anything wrong. superpi gave me error right away, i was like 'huh? wtf is this all about?!?'. my initial thought is that it had to do with raising the ref v, so i dropped it back... nothing, pi still fails. then i set my cpu to 230x9, and the thing is rock stable, no matter what ref v. it seems that something doesn't like x9 multiplier.

anyway, i went on and tried to apply your settings, but it didn't help much. 240 pi still gives error (i was able to pass 1m at first, but trying 4m and then 1m again would fail). moreover, i wasn't able to alter that 'max async latency' thing. system would just hang after trying to apply new setting, i had to hard-reset it.