PIV 1.8A @2.8 GHz!!! 155 FSB, 1.69vCore 35C idle temp!!!!

[LastRide]

WayneTek,whats your voltage at?.You say your at 1.5 vcore voltage.Your system might not be stable at 2.4 with default voltage.Add more voltage .025-.050 1.525V-1.550V. If you just put your system together for the first time and overclocked before installing your OS thats not cool.You need to know your stable settings first.How much FSB and at what voltage to be stable.I get lockups and errors too if I don't have enough voltage set to run stable at my FSB.

 

[JuicyFruit]

Originally posted by: LastRide
WayneTek,your not installing windows with your system overclocked are you?.

JuicyFruit,set you memory at lowest timings 2.5/3/3/7 add .025-.050 voltage 1.525V-1.550V to make it stable. You shouldn't need to add vdimm voltage yet,keep it at 2.6 for now.Keep going on the FSB until not stable and add .025 voltage.Don't take big jumps in FSB,3-4 at a time should be good.Your at 2850ghz now.If its stable at 150FSB at default voltage than I think you can hit 3ghz stable.Just run prime for 15 minutes each step for now.

mem's at 2/3/3/5 or spd. do i need to set it lowest timings? it's samsung original 2700. i'm running 1:1 so it's only at 308ddr.

 

[Mikki]

I agree. From what I gather, you haven't got Windows up at all, is that right? I would set everything back to default and start from scratch.

 

[LastRide]

JuicyFruit,Yes set it to 2.5/3/3/7 .Your trying to find out what your CPU limit is at highest overclock.The lower memory timings will give you more stability and higher Overclock. Later you can decide if you want higher memory speeds or higher clock speeds.First you need to know your CPU limit. All you need is 158FSB to hit 3002GHZ.You still have lots of voltage at your disposal 1.7V- MAX!,no more.Your gonna make 3gig,then your gonna sell me your chip

 

[JuicyFruit]

Originally posted by: LastRide
JuicyFruit,Yes set it to 2.5/3/3/7 .Your trying to find out what your CPU limit is at highest overclock.The lower memory timings will give you more stability and higher Overclock. Later you can decide if you want higher memory speeds or higher clock speeds.First you need to know your CPU limit. All you need is 158FSB to hit 3002GHZ.You still have lots of voltage at your disposal 1.7V- MAX!,no more.Your gonna make 3gig,then your gonna sell me your chip

in due time, my friend. in due time.

update, i'm at 154fsb now, 1.6v, 2/3/3/5. prime's been going for about 2 hours strong. . . so maybe i'll stop now and change mem timings and up fsb.

wahoo!

 

[LastRide]

:Q No need to run prime for 2 hours now,30 minutes is fine.Some guys test for 10-15 minutes and later on do a more thorough testing.After you find what your chip has got then run prime overnight to see where your stable at highest overclock.If your at 2/3/3/5 and running 2 hours at 154FSB your doing great but set it too 2.5/3/3/7.Its going to get yoou farther.Later you can go with faster memory timings.Your going to hit 3gig+ at 1.7V.Is your mobo still undervolting?.What is your idle and load vcore voltage?.

 

[JuicyFruit]

update. i'm at 156fsb, 2.5/3/37, 1.625v in bios, 2.7v for mem. gonna run prime with these figures and see what happens in the morning.

no load, pcprobe's telling me 1.680v - 1.696v. under load, it drops down to 1.600v - 1.632v. is it possible to get this asus board to stay at ~1.7v under load?

if i set it to anything above 1.625v in bios, it'll idle above 1.7v, which is bad, right? so basically, i think this chip can do 3ghz, but just not on this board. i haven't finished playing with it but perhaps this board is holding me back.

also, when you say 1.7v max, does that mean in bios, idling, or under load?

thanks a bunch.

 

[Mikki]

What ddr are you using? I wouldn't even bother with the memory voltage, it usually doesn't do chit. Besides, you want your memory running at default while you test the limit of your cpu.

So right now you're sitting at 1.69v, like me. That's about the limit most folks would go, I won't take mine over 1.7v. The variation is normal, that's the cool thing about Asus boards, what you set in the bios is what it runs when it's under load. No guesswork.

Which board are you running? The limit of your chip doesn't really have anything to do with the board, the board (and the psu) is giving it the juice, you're just running out that's all. Good luck!

 

[LastRide]

Mikki,he has the same board as you P5B533-E and running Samsung Original 2700.He was at 154FSB at 1.6V with 2/3/3/5 memory timings earlier running prime for 2 hours.He should get an extra 4 FSB since he still has a little voltage to play with,not much though.Hopefully he doesn't hit a wall.JuicyFruit,1.650-1.675 (1.675 for testing) is most you should go in the bios.You would like to be at 1.65 in bios preferrably.Hopefully you will get 3 gig at that setting.You wouldn't want to run your chip higher than that full time.Your overvolting is about right but your undervolting is a little too much.

 

[JuicyFruit]

something weird's going on. usually when prime fails, it says "halted. . . blah blah blah." sometimes now, it just hangs. all i know is it's at test 3223. but how long it took to get there, no clue.

if i set 1.65v in bios, it'll be idling at 1.7##v. is that okay? i really don't want to shorten the life of my cpu by a lot. a little, on the other hand, i can deal with.

for testing purposes, i'll try mikki's suggestions and lastride's 1.65v in bios.

i hope prime doesn't hang again.

oh yeah, everything works while prime just sits there locked. can't stop/close/click anything. but i just surfed a litte and now i'm posting and editing. . .

the task manager shows 0% cpu usage, so that's how i know prime's not doing anything.

 

[SupermanCK]

your cpu might be getting too hot...reading below 1.75v should be fine...
when you comp locks up while prime...can you still move your mouse like usual...use keyboard controls? and can you close prime right away or you can't close it either? or it takes a few seconds before closing?
check you cpu temp...your cpu %usage might not be updating like usual while prime is loading...try uninstalling prime and reinstalling it...

 

[Mikki]

LastRide, you're right, if he's set at 1.625v in the bios, it shouldn't be dipping that low under load...psu maybe? And I agree with you, for the sake of seeing how high you can go, I'll go higher than 1.7v, but when I'm done I keep it under 1.7v...

Juicy Fruit, I've had the same problems with P95, your system isn't stable enough. I've gone hours only to have it lock up. You gotta up the volts or back the fsb. Good luck, I hope you get your 3gig!

 

[LastRide]

JuicyFruit,I have had that hanging problem too.I did what SupermanCK says uninstall and reinstall Prime and it seemed to help.You may aswell just set the voltage to 1.65 in bios at 158FSB (3002GHZ) and run prime t this point.Try both 2.5/3/3/7 and by speed if one or the other doesn't work.

 

[JuicyFruit]

alrighty, i'm at 1.625v, 2/3/3/5 and prime's been running for about 4 hours. i had to go down on the fsb though, so it's only at 155 (2944.13mhz). i was hoping for more, but the cpu doesn't want to go any higher and be stable.

i tried 1.7v in bios at 2.5/3/3/7 and 158fsb (3002mhz) and prime did that hanging thing.

i hope prime runs at the these specs until tomorrow, so i can determine if it's even stable at 155fsb.

lastride, i don't think you want this chip, it's not a 3 gigger. at least for me it's not.

 

[LastRide]

I was just clowning around about wanting the chip.I can't see why you cant reach 158FSB.I think with some tweaking you should get there.

 

[JuicyFruit]

i really don't know what else to tweak. i mean, i've set my mem to the lowest timings, upped vcore to max (1.7v) and still no 3ghz.

short of disabling everything on my motherboard, i think i've tried everything. i am new at this so i'm probably leaving something out. maybe thugsrook will join this thread and save me.

but i know he's busy benching his gf4s though.

 

[Mikki]

My original goal was a 1gig oc, I was disappointed when I didn't reach it also, but after messing with stuff and after time, I eventually got it. There's always hope! Disabling stuff on your mobo may give you what you want, but for me, if I can't get it with my everyday config, then screw it. K, enough with the pep talk! Good luck...

 

[LastRide]

Mikki is right,with time you may hit it.Sometimes a burn in process over time can help.Its nothing to complain about.Your just short of 3gig that may hit eventually.You still have a pretty darn good chip.

 

[DirtyPunk]

my p4 1600A can do 2750 with 1.62v full stable (with ram at 3:4) and not full stable but with 1.88v can do this 1600@3200
the cpu is clocked by DDA, a great italian overclocker, with a 226w plet and 0-5° water. Soon i'll try do do better

 

[JuicyFruit]

prime crashed last night. didn't hang up like is does sometimes so i'm thinking it's getting a little more stable. i had to go down in fsb to achieve that so now it's at 154, previously at 155 when it crashed.

mem was at 2.5/3/3/7 at 155fsb when it crashed. testing now with most aggressive memory timings now (2/2/2/5) at 154fsb. so i went down in fsb but up in timings. you guys think it'll crash?

to be continued. . .

 

[JuicyFruit]

for bump.

is 47C too hot for cpu?

 

[JuicyFruit]

chatting with big8oy, i came across this question.

is 153fsb with 2.5/3/3/7 faster or let's say, 150fsb with 2/2/2/5 faster?

 

[Mikki]

Is that 47c load or idle? load = no, idle = yes, that's too hot.

is 153fsb with 2.5/3/3/7 faster or let's say, 150fsb with 2/2/2/5 faster?

For memory benching, 2nd would be faster. For overall system performance, 1st would be, I believe. Test it and find out...

 

[THUGSROOK]

you guys might wanna try using all 3 power plugs on your board.

 

[Mikki]

Thugs, you talkin about using the EZ Plug also?