Safe modest OC for a 3000+ Venice

A

alderweis

Weaksauce
Joined
Oct 22, 2002
Messages
126
Hey guys, I have a 3000+ Venice (stock air) and an Epox 8nPa. I am currently running at 32c idle and 40c load (BF2 for 2+ hrs).

I have that itch that wants to be scratched, but I don't wanna go nuts... whats an acceptably safe OC?
 
I got 2.6GHz with stock volts and stock cooler with a 3000+.
My temps were lower though (38C load, ambient 22C). It sounds like you dont have many case fans or its quite warm where you are.
Every chip is different and if you have a real good chip you may get 2.8GHz on air.
Try 2.2 to 2.4GHz and if the itch still persists, go for it :D
 
I keep the volts under 1.55v and with my beefy heatsink its fine. I can get up to 2.75GHz on 1.55.

Since my AGP lock is broken, I can only get 2.2GHz, with 1.475v, thats not too risky I dont think.
 
i had a 3200+ winchester which is known to be a lesser OC than the venice and i got 2.5 with stock vcore.... but and mhz is safe the voltage is what makes OCing unsafe so just keep you vcore under 1.55 to be safe and monitor your temps.... dont go abot 55* full load.... what HSF do you have?
 
My 3000+ is running warm with a zalman 9500... it's like 40idle 49load. On stock voltage I can get to 2.4 prime stable, but it won't go any higher... I wish I had one that could do ~2.8. My stepping is CBBWE 06XX *sigh*

What are you guys changing in the bios and what bios versions are you guys using?
 
I havent played with any socket 754 kit so am not sure what to expect.
On both Nforce 3 and Nforce 4 boards with stock cooler/volts running at 2.6GHz, my temps were approx 32C idle and 44C load.
Ambient temp 22C.
(note: I draw cold air directly onto the cpu using tumble dryer air hose :))
Its important to know your ambient temp as without it the absolute cpu temps dont mean a lot when comparing systems. What means more is the temperature above ambient.
The absolute temp matters when considering how much headroom you have left for the overclock.

It does seem you have high cpu temps considering you use an aftermarket cooler.
I would investigate why this is so first.
I'll be asking some pretty basic questions which need answers please.

Can you check the cpu temp with an external sensor as close to the die as possible to see if they are close at idle and load? Its good to know if the temps are realistic as many motherboards have awful sensors/readings.
Do you have good case airflow?
Did you use a good cpu paste and apply it well?
Is your cpu fan running at full speed and is the heatsink clean?

Its worth finding the max HTT your motherboard/ram does.
It could be that you cant go higher as something else is maxing out.
To test, set your memory divider to slow the memory down a lot.
Set your CPU multiplier as low as you can.
Set the HT multiplier to x3.
Now raise the HTT until your PC will no longer function reliably, that is the maximum HTT you can use with the current configuration.

A few things can prevent your HTT going higher:
.your ram may be maxing out (set a lower speed divider to test).
.your motherboard chipset may be at its max (check temps/chipset cooling).
.You may not have enabled the PCI lock causing a PCI device/card to fail.
(Assuming you have a PCI lock function. If not, that is likely to be the reason you cant go higher)
.The HT multiplier may be set too high. Reduce it to x3 as you wont notice any performance drop.

Do you know the max HTT other users of your board are getting?
 
look.....all i can say is:

up the FSB a bit. stability test. up it a bit more, stability test. oh no, it's not stable, see if CPU, chpset, or memory voltage is holding you back.once you have established what is holding you back, up the FSB a bit more.

don't let you HTT frequency get much above 1000, pre DDR. drop the HTT multi if you're pushing the FSB very much. CFeclipse has quite a bit to say on the subject.

up the FSB, find what is holding you back (32M run of prime 95 is the bare minimum, with a 10 hr+ run of prime 95 torture test when yo think you're as far as you can go), up the voltage of what is holding you back, and proceed.

don't take the CPU voltage above 1.6 and don't take the RAM voltage above 2.8 unless you have BH-5, CH-5, BH-6 or UTT chips in your memory.
 
Chernobyl1 said:
I got 2.6GHz with stock volts and stock cooler with a 3000+.
My temps were lower though (38C load, ambient 22C). It sounds like you dont have many case fans or its quite warm where you are.
Every chip is different and if you have a real good chip you may get 2.8GHz on air.
Try 2.2 to 2.4GHz and if the itch still persists, go for it :D
Click to expand...


Why dont i believe this ... why doesnt my 3200 over clock to a 2.3ghZ
 
Just because his overcocks higher doesn't mean yours will do the same. There are a lot of variables and not all cpus are going to have exact overclocks. It all depends on the stepping and stuff too.

Like mine won't go more than 2.4 on stock volts... it needs a high increase which my motherboard can't provide. Some of them are lucky and then there are unlucky ones like us.... :)
 
keypox said:
Why dont i believe this ... why doesnt my 3200 over clock to a 2.3ghZ
Click to expand...

2.6 GHz isnt anything special with these Venice chips.
Maybe your PCI or AGP bus isnt locked and thats limiting your overclock?
 
i had a s939 3000+ venice that ran at 2.7ghz @ 1.55v all day long with a xp-90 w/ panaflo (1700rpm). temps were 32c idle, 43c load.
 
I had a S754 Venice 3000+ running 293x10 fine w/air and volts around 1.6. The idle was 41C but this is because I had my CNPS7000Cu mounted oddly (I couldn't get tight enough contact without the cpu lid so the temps suffered for it).
 
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