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3000+ S754: reached my limit?

M

Mr. K6

Supreme [H]ardness
Joined
Mar 23, 2005
Messages
5,077
Long time reader, first time poster, figure this is the best place to get some advice :p
My rig is in my sig (heh, rhymes), and I'm basically trying to max my o/c. Currently I'm running 240x10, prime95 stable for ~3hours on max heat/power test, 100% F@H, 3Dmark, games, etc. stable, which is good enough for me. I was running 300x8 (seems folding likes the higher external clock), but that wasn't stable (I'm guessing due to the 300HTT :eek: ). I was thinking this was alright, but then I saw some people get to 2.5GHz. 1.7v only gets me to 2.43 or so, 2.45 in only 30min prime stable and 2 min prime stable at 2.5 :rolleyes: . It always fails with rounding errors, so I'm taking that to be the CPU's fault. So, I ask, have I reached my limit? Is there any way to squeeze more performance out besides cranking up the volts? I could run 1.7v, but load temps are 50/51C, and it's not even summer yet (this is all on air cooling). Just looking for some help/suggestions, thanks!
 
Im trying to oc my brothers a64 system. What do i set the cpu freq and multipliers at and stuff? The ram always gets put to like 115mhz and shit its weird. Much diff than amd athlon like i have. I had it booted at 2300mhz but the divider on the ram was 20 lol
 
Read the guides, they're VERY helpful :D

Yah, that's what I was afraid of, do multipliers/dividers make a big difference in stability?
 
K i just overclocked it. I changed the HTT from 1000mhz to 800mhz and am running at 2400mhz currently. mem is set to 333 so but its running at ddr400 currently because of the divider. Maybe i can get 2500mhz out of it :)
 
Mr. K6 are u lowering the HT mulitplier? The maximum HT (HTT x HT multi) Is 1000Mhz on 939 systems and 800mhz on 754 systems. For example, on my 939 system, with a HTx of 5 my maximum HTT is 200Mhz, anything above that and i have to lower it to 4x. 4x will last upto a 250Mhz HTT and so on and so forth. If u exceed ur HT bus limit, u will run into serious instability.
So at a 300Mhz HTT on a 754 system, u really want ur HTx at 2x, If u run 4x u will be trying to run a 1200Mhz HT bus, 900Mhz @ 3x, 600Mhz @ 2x. Check it out. Or you could already kno this lol :rolleyes:
 
Actually my system is rock solid up to 1200MHz HTT. I have no idea why but it's prime95 stable 24hours+ :confused:. I dunno, I was hoping I could get to 2.4GHz on 1.6v, but it looks like I'm stuck at 2.36. Not that bad, worse things could happen ;)

EDIT: Also, I can't boot at 1x or 2x LDT multipliers. I don't know why, but it just freezes up and boots back to 200MHz HTT and the last LDT multi I had that worked. I guess its a BIOS issue, I should probably update.
 
A64 cpu's suck and can't overclock worth a rat's ass. You've reached the core's end. You should've bought an Intel.
 
that doesnt make any sense at all. my friends 3000+ on a KV8-Pro (who says via chipsets cant clock high!) gets 2.5 stable all day on stock vcore, but runs his memory on a 5:6 divider. do you have a newcastle or clawhammer core? clawhammer 754's are notorius for not clocking as well, for some reason.
 
yah, it's a clawhammer core :( . Ahh well, I guess I should be happy with what I have, I decided to run it at 2.4GHz 1.65v, load temps are only 43C anyway :cool:

And what do you mean? The more recent newcastles and the winchester cores overclock like champs. 1.8 3000+ to 2.7? How many intels hit a 50% O/c on good air cooling? Honestly, I hope this doesn't start into a !!!!!! flame war, I'm just looking for some help...
 
freeloader1969 said:
A64 cpu's suck and can't overclock worth a rat's ass. You've reached the core's end. You should've bought an Intel.
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lol... ur the one with the athlon mobile in ur sig..lmao..you suck.....
and maybe athlon 64's don't need to overclock to be as good as intel....an athlon 64 3200+ will spank one of intel's extreme edition in gaming anyways so yeah...imagine an fx-55 wooohooooo ouch....big time whopping....and O yeah maybe you should've bought a brain.
 
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