Help with my first 775 overclock

[fggs]

Hello everyone,

I know this rig is old but I thought was a good investment for the price, replacing a Sempron (Socket 748) for my dad.

As it is for my dad I don't want to push it too far, just what I can achieve on air, this is his office machine.

I'm looking for starting points, my last overclock was under Socket 462 (or A).

Here's the rig:

CPU: Intel Core2Duo E6300
Motherboard: ASUS P5N-E SLI with BIOS 1406
Memory: 2 x 2GB DDR2-800 with Micron D9HNP under BLACK slots
Video Card: PNY GeForce GT520
PSU: Seasonic SII 430W
Cooler: CoolerMaster Hyper TX3
Thermal paste: Zalman
Chassis: CoolerMaster Elite 370 with no additional fans, only the stock one at the back

Temps according to BIOS:

CPU: 39C (102F)
Motherboard: 40C (104F)
Ambient temp around 28C (83F)

Thanks for any input!

 

[AlucardX]

set FSB to 400 and go from there. there should be an old or archived thread around here that explains C2D overclocking.

 

[fggs]

Thanks for your quick response AlucardX!

I've heard that this chipset won't pass 365FSB, but anyway.. 400 with 6x multi? Linked? Unlinked? Too many options :S

 

[ch33zw1z]

Overclocking takes time and trial and error.

If that's the 65nm 6300 then it's 1.8Ghz or 266x7.0

I would start by manually setting the RAM timings and voltage to spec for DDR2-800 so you know it's alright.

Move on to the CPU, I would start around 300 FSB, don't change the multiplier, and manually set the voltage to what the default is.

When I oc, after each change I will run Memtest86+ for 12 hours, then run something like Intel's Linpack, Prime95, or OCCT (all from inside windows) for another 12 hours. If it's stable, keep bumping up the FSB in the smallest increments the BIOS will allow, or whatever you feel comfortable with.

You will hit a wall the further you go when you will start to bump the CPU voltage a little bit at a time. Higher clock speeds mean more power consumption. Hell, depending on your power setup/mobo even 300FSB may require a little voltage bump. IIRC, the 65nm's started at 1.325v or something and maxed out at 1.5v

Also disable Speedstep and C1E on the CPU. You don't need it throttling down at all, you oc'ing after all 🙂

Use CPU-Z to watch the voltage/vdroop, CoreTemp for temps.

Again, this is for the 65nm E6300. I don't have any xp with the 45nm version.

 

[fggs]

Thanks ch33w1z!

So I guess 5-5-5-15 and 1,8v for the memory, unlinked, right?

300FSB, got it!

I guess it's 65nm, Vcore is 1.325 in bios if I recall...

At least it's something to start with 😀

 

[ch33zw1z]

unlinked, sure, if it's stable don't try changing it 🙂 trial and error.

for the ram, what ever the specs say. CPUZ has a tab for memory too.

 

[fggs]

I didn't had time to test more but I'm at 302,5FSB with stock Vcore (manually set). SuperPI gave 25,875 secs so far..

Anyway, I'll be posting my progress for you guys to give me tips..

Thank you so much!

 

[Arkaign]

I really, really don't want to be a drag, but :

If this is an office machine, leave the OC at an extremely mild level at most. The good news is that Asus did a good job supporting newer CPUs on that mobo, so you can cheaply drop in something hugely faster for cheap, and not have to worry over the thing degrading/becoming unstable. Many S775 OCs last a long time, but suddenly start to fail out of nowhere, even with stock voltage.

If this was anything but an Office machine, which I assume is depended upon to work 100% perfect for business purposes, I'd say go for it all the way and have a blast, but it's just not worth it imho.

If he's coming from a Sempron, then even a stock old E6300 is like a rocket ship 🙂

Pentium Dual Core (Wolfdale 3.2Ghz) E5800 is supported :

http://support.asus.com/cpusupport/list.aspx?SLanguage=en&m=P5N-E SLI&p=1

http://www.newegg.com/Product/Produc...82E16819116385 $74

It's a 65w 45nm chip, those things run ice cold. And the old C2D E6300s still look to get bid over $40ish on the fleabay, so total out of pocket cost would be dirt cheap after getting rid of the old chip. All of your voltages, bus would be stock, and your dad would have the best chance of not having his business system suddenly bite the dust costing valuable time.

Cliffs : OC'ing is awesome, have fun, but I don't recommend OC'ing someone elses system ESPECIALLY A BUSINESS PC. E6300 is way faster than old Sempron, so he should be happy at stock. If he needs more performance, spend $30 out of pocket cost and go Wolfdale E5800.

 

[fggs]

I agree with you, thanks for making your point and also giving another option instead of such a risky practice as overclock is.

Call me crazy, but my idea of this overclock was to come close to the other office's machines which is mostly Core2Duo E7300 or E7500.

I know a E7500 would SuperPI 1M at 19secs stock, so I thought: if I could bring my dad's new machine close to this SAFELY, he would have similar performance and would be in the same boat as everyone else 😉

He loved the new machine performance at stock, as you said it's a rocket ship compared to Sempron 748, but he is still behind and I'm only doing this because I love him 😀 Perhaps, as I'm such a good son, I should buy him a i7-970 😎

 

[VirtualLarry]

Yeah, don't OC business systems. Bad juju.

 

[Spikesoldier]

i recommend 333x7 for a max OC. that gives you 2333MHz which is almost where the OG conroes max out in frequency coming in stock form from the factory.

drop memory speed down to 667MHz with 333FSB, go 1:1 memory ratio.
if you have extra time to test with memtest, you can probably tighten up cas timings from 5-5-5-15 @ 800 to 4-4-4-12 @ 667.

VL has a point coming from experience. i know exactly where hes coming from.

do not 'push the envelope' with the OC or you will get tech support calls from daddy and he wont be able to troubleshoot = you having to come back and fix it.

 

[tweakboy]

I can tell you, upgrading from that Sempron things are going to be blazing fast, I mean too fast. Its a huge upgrade. that was P4 times, and Core 2 was groundbreaking in performance and everything. Since then no ground breaking things Sandy Bridge isnt ground breaking its still 4 cores,, ok 4 more logical cores. Its a amazing upgrade

First all memory should run at proper frequency with timings, Set it so SPD in BIOS everything on AUTO for RAM and make shure about divider,, I use 1:1 You can use 7:8 or something depends.

There are 2 ways to OC the 775. Either using the FSB front side bus OR changing the multi, OR both. Also you have to change the vcore CPU voltage, and take up motherboard volt to max and PLL to max. Put vcore at 1.36v to begin with. Look at my rig for example and look at this shot of AIDA64.

 

[fggs]

Thanks for replying guys!

As they said above, it's risky to overclock a machine meant for business purposes, so here's what I've decided: I'm gonna overclock it just to see how far it can go, then go back to stock for day to day use.

I really appreciate all the help and opinions, sometimes I cannot see through all angles

@Spikesoldier: My dad has an advantage as I work with him hehe

@tweakboy: Your shot url seems broken 🙁

 

[tweakboy]

It should come up take a look at it. Youll get a idea...

 

[Termie]

On that P5N, I think your max might be 400MHz FSB, which would be 2.8 GHz. That actually is doable on an e6300, but you'll likely need a big voltage increase. The good news is that you should be able to do 333MHz (or 2.33GHz) at stock voltage.

Just for kicks, my dad's E6400 system is overclocked to 2.67GHz, or 333x8, on a p965-based motherboard. He uses it almost exclusively for work, and it's never crashed in 4 years of use.

 

[fggs]

Hi guys,

Sorry for my late response. Thank you for the support!

Results of today: I raised FSB to 314 at stock voltage, which gave me 2198Mhz.

I didn't test stability yet, I'm waiting for it to crash.

I know this is probably not the best way, but I just want to see how far it goes with stock voltage.

SuperPI 1M: 24,485 secs