3700 San Diego oc...

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jpierce55

Weaksauce
Joined
Oct 14, 2003
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What would be a safe and mild oc for a 3700 with stock heat sink or should I leave it? What would be a good starting point of voltage?
 
I'd start at stock voltage and just bump the fsb up slowly. No reason to believe that the stock heatsink won't support a mild overclock.

Doc
 
I know I have read some reviews where the 3700 was taken to 2.7 with stock voltage and heatsink/fan. I won't try that hard maybe more like 2.3 or 2.4.
 
OK lets get 1 thing straight. Speed isn't what kills chips. Voltage and heat are what kill chips. If your chip can run stable at 2.7 on stock volts then sweet, it's not going to die because of a high fsb.

So there's not really any point in 'settling' for 2.3 - 2.4 IF by chance your chip can do 2.7 on the same voltage (that's a pretty big if though)
 
Give these things some volts and watch them perform.

Over on the s754 thread people are finally realizing the benefits of 1.70 volts to their single core Venice processors. It's not volts but heat that you have to watch out for. Keep the core temp under 60C and you'll never have a problem.
 
Thanks for answers on the oc. I got 2.53, looking stable after torture testing, with the stock volts/h.s. and still running cool. Maybe later on I will buy an aftermarket h.s. and try more volts but not yet.
 
it should be easy.. my SD 3700 stays really coool... 30 idle and 40 load
in summer i run at 2600 at 1.42 volts
in witner i run at 2700 at 1.5 volts

just give it a try, mess around with some settings and hope for luck! :D
 
my 3700 Sandy is at 2.6GHz stock volt with a pasive heatsink and 80MM fan temps are 28 idle 39 full load
 
I might try a touch of voltage this coming weekend, any opinion on what voltage to bump to first? I figure even after some gaming I am showing 44c (mobo monitor) that it can probably take a bit more. I will still be gentle.
 
was just about to post something about this. i got my 3700 running at 2.7ghz. 270x10fsb, running my 1gb corsair xms pc3200 @ 245mhz. all on stock heatsink and voltages. memtest and prime95 both pass. would you say this is a good and safe OC?
 
not being an expert here but as I stated a few articles claimed they did as much. I don't think much risk of damage if it is running cool and using stock voltage, but I am not an expert on oc, so kind of bump for you.

Another question for me anybody mess with the cpu ratio?
 
1.5-1.55v is a safe level for the stock heatsink. Just monitor your temps and you should be fine. If you get a better heatsink then jack it on up to 1.6v and let 'er eat! In the mean time, if you can't replace it (budget wise) then being conservative is quite understandable.
Like unclewebb says - some of us are a wee bit more [H]ard than others so cranking up the voltage and seeing what it'll do is no big deal :)
 
It won't load at all with the voltage jumped, I had to reset the bios at anything above 1.4v :(
 
What were your cpu frequency and multiplier settings at? It seems odd that it wouldn't boot just because you applied more voltage. Never heard of that happening.
 
BigMacAttack said:
What were your cpu frequency and multiplier settings at? It seems odd that it wouldn't boot just because you applied more voltage. Never heard of that happening.
Click to expand...


Same as before the voltage was the only change, stock multiplier and 228fsb
 
jpierce55 said:
It won't load at all with the voltage jumped, I had to reset the bios at anything above 1.4v :(
Click to expand...
Not all bioses are created equal. Just because you select a number in the BIOS doesn't mean you will end up with that many volts.

What kind of board do you have and are you using the most recent bios version?

Try some different settings to see what happens. If it does post have something like MemTest86+ in the CD drive and boot up to that to do some testing so you won't have to worry about screwing up Windows.
 
Yeah. I have a sandy, and for some reason it likes a lot of voltage with my 4 x 512.

If I fry it...it's an excuse to buy an X2.
 
One last question on this, do you think I can get more oc with a bigger cooler or is it still going to reject it since the voltage can't be raised?

Boy I hope the update that Bios!
 
On stock HSF, my 3700+ SD idled at 30, loaded to 42C at 2.82, 1.45vcore with good case cooling.

With a Zalman 9500 cooler, it dropped to 28C and 40C load, so I cranked the vcore up to 1.55V and got to 2.9ghz. So with the better cooler, I undervolted my casefans to 7V to quiet them down, and only got a little more cpu heat - up to 44C load.
 
I have my 3700 SD running at 2.685 on stock voltage/cooling, stock ram speeds. Runs about 53 deg C and is prime95 stable, for as long as I've run it, which is like 1 hour. I'll have to give it the overnight run to be sure, but I've seen no ill behavior thus far.
 
I put on a Titan cooler, a bit quieter so why not. It runs the same temp at load, cooler at idle. Maybe in a long strain the load would be cooler, but I have not had it long enough to compare.

I say the BIOS may be the blame for no more oc. Now I can turn the pc on to a 2.66 oc, but it is only stable at the same 2.5. I can't lock the HST or it won't load, changing the cpu multiplier at anything but stock fsb causes a need for CMOS resett.

I say it is a good layout mobo, but obviously not for overclockers unless they change the bios, I don't care it is good enough.
 
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