E6750 & Gigabyte P35C-DS3R Overclocking Thread

[fausto412]

Originally posted by: mrfatboy

Originally posted by: Conjugal Visit

Originally posted by: mrfatboy



Oh, and the voltages are still all wacky in F7

+0.3 => 2.128
+0.4 => 2.400
-------------------------------------------------------------------------------

I tried it this afternoon, hoping it would provide some undervolt at idle. Alas, no, and I went back yet again to F2.

Those voltages, tho - +0.2 yields 2.13v on my board, with my ram....I believe I checked that on the F7 as well.

Did you verify that F7 voltting the ram at 2.4v with the +.4 setting? I can't believe gigabyte would let F7 out like this. I guess I'll wait for F8

i can verify that what he's saying is correct i show same thing in f7 bios. this is not accurate. and f7 bios is the one that shows you actual voltages in bios system health.
we need to do an investigationg to see if one bios different from others as far as volting. i've verified speedfan values are same as bios.

 

[fausto412]

Originally posted by: wpcoe

Originally posted by: Conjugal Visit
I've read some threads here and there where folks are undervolting, yeah, and happy to do so. I don't know enough about that, frankly. Personally, if the manufacturer says "run my Ram at 2.1v if you wanna do 4-4-4-12" for instance, I set it to 2.1v. IMO, I'd leave the voltage at Normal - 1.3500 - and then implement EIST and C1E, which will undervolt your rig when it's just sitting around. Or go for it, and start dropping down a step or two, but I'd Orthos the heck out of it, just to make sure when you launch some mission critical shite, undervolted, you don't suddenly freeze, crash, ort start getting computational errors...

Last night I lowered the core voltage to 1.25v mainly to see what the difference in operating temps would be. Then I went to bed and left the Orthos blend tests running. Got up 5.5 hours later, and no errors at that point, but I will test it longer later on.

Before I went to bed, I noted the temp readings with Orthos running and air con off with a room temp of 27.5°C, at the point where the Orthos had been running 8 mins. (BTW, until yesterday I didn't realize I needed to run two instances of Orthos to totally "max out" the RAM. With only one instance of Orthos running, it would only use about 2.5GB RAM). With 27.5°C room temp, Orthos running 8 mins: @ 1.35v the core temps were 57°+59° and @ 1.25v were 52°+54° -- an impressive (to me, at least) drop of 5°.

This morning, doing the same test, but with air con running and room temp of 23.5°C, @ 1.35v the core temps were 49°+50° and @ 1.25v were 45°+47°.

Considering the room temp dropped only 4°C, I was surprised at how much that appears to have affected the core temps.

All the above experimenting was done with fan control OFF in BIOS, i.e. all fans running full bore. And, for consistency, I started the second instance of Orthos 30 secs after starting the first instance for each test.

For kicks, I took screen shots of the experiment this morning:
http://www.wpcoe.com/1.35v.gif
http://www.wpcoe.com/1.25v.gif

Thanks for all the feedback. I've been reading some of the other threads about this mobo and am impressed with the knowledge of the participants and the patience and willingness to share info.

i did the same thing you did, 100% stable. dropped voltage to 1.30625, 1.26 actual in bios and temps dropped about 4 or 5 degrees on my 3.4ghz OC E6750 G0. p35c f7 bios.

 

[MaDMvD]

F9 BIOS is out for P35-DS3R.

 

[mrfatboy]

Originally posted by: fausto412

Originally posted by: mrfatboy
yes, vcore2 is the memory voltage. There is no F8 bios at the moment ( i think ). I am guessing you have a P35-ds3r board. The P35C has the problems with voltage.

your specs say you have ram at 800 mhz running 1 to 1 with cpu but to OC to 3.6 you need 450 fsb which is 900 mhz in 1 to 1 ram. so which is it? you oc the ram but don't note it in your specs or you somehow underclocked your wrong or got it fixed at 800. if so, how did you? if i can lock my ram at a spec i will reach 3.6 with no problems.

My ram spec is ddr2 800. I am running a 8 x 450 (3.6) with ram at a 1:1 ratio. So yes, my ram is OC'd to 900.

 

[Rex Ham]

Yaaay - just the kinda thread I've been looking for - great idea, and just like to say hi to everyone, before I go and catch up on all the pages that have gone on so far

I've only just dipped my toe in the OCing world after building my rig about August - as you can see from my sig, I've managed to stumble and fall my way to my current settings but if I'd found this thread a week or two ago, everything would've been soooo much less confusing, as I've been getting advice off people with every make of mobo under the sun - and what I wanted was specific advice for MY mobo, with me being a noob and all...

Anyway, bye for now....see ya when I've waded through 30-odd pages :roll: :thumbsup:

 

[Conjugal Visit]

@Rex Ham - welcome to the AnandTech forums! It looks like you have already advanced to a nice overclock there. You've run your stability tests, I assume?

Regards,

 

[Rex Ham]

Conjugal Visit - thanks for the welcome

Yes I've done Orthos for 9hrs+ SEE HERE

Might take a while to catch up to this page of the thread- only on page 8!!! (Have to just proof read it )

Also though it might help if I don't keep getting interrupted - the kids are off school today

TTFN

 

[Rex Ham]

Plz ignore this if it's already been proven....I'm only up to page 15/16 .......

But I've enabled EIST in the bios (after reading comments from thus far...) and have just been gently browsing away when I noticed on CPU-Z that my vcore was less than (can never remember that piggin symbol ) 1v until I actually clicked and 'did' something - then it went back up to 1.328v!

In other words - it also lowers the voltages as well as the multi......

(If it's already been proven - you'd already know that tho wouldn't you :roll: )

N'mind. On I go...........

 

[Rex Ham]

Hi again everyone. Just a quickie ( I hope )

Got my E6750 running at 3.76Ghz on full load in orthos for 2hrs 44mins before it errored :-

"FATAL ERROR: Rounding was 0.5, expected less than 0.4"

I've got the following readings but I think it's now the ram that's the problem (I say 'problem' - it's doing blummin' great to be holding up at 940mhz I think...)

FSB = 470
vdim +0.2 (as has been said already, the P35 is sposed to over volt by 0.1)
vcore = 1.4125
(G)MCH = +0.1
The mem timings are still set to 'Auto' in the bios.With this OC, they're reported by CPU-Z as 5-5-5-22

My temps are 42* idle 60/61 under load

The info with my Ballistix says that they are rated PC2-5300C3 667Mhz 3-3-312 2.2v

Given the 0.1v over-volt from the board and my setting - that's only 2.1v(ish)....

D'ya think it'd be OK to add the extra 0.1v at this speed? Or would you up the vcore again a notch instead - the temps are OK to do so I think....

Cheers for any advice

 

[fausto412]

Originally posted by: Rex Ham
Hi again everyone. Just a quickie ( I hope )

Got my E6750 running at 3.76Ghz on full load in orthos for 2hrs 44mins before it errored :-

"FATAL ERROR: Rounding was 0.5, expected less than 0.4"

I've got the following readings but I think it's now the ram that's the problem (I say 'problem' - it's doing blummin' great to be holding up at 940mhz I think...)

FSB = 470
vdim +0.2 (as has been said already, the P35 is sposed to over volt by 0.1)
vcore = 1.4125
(G)MCH = +0.1
The mem timings are still set to 'Auto' in the bios.With this OC, they're reported by CPU-Z as 5-5-5-22

My temps are 42* idle 60/61 under load

The info with my Ballistix says that they are rated PC2-5300C3 667Mhz 3-3-312 2.2v

Given the 0.1v over-volt from the board and my setting - that's only 2.1v(ish)....

D'ya think it'd be OK to add the extra 0.1v at this speed? Or would you up the vcore again a notch instead - the temps are OK to do so I think....

Cheers for any advice

Nice overclock on your e6750. i hope to do the same. that error you get on orthos only happens to me when my ram overclock is too high. that's why i'm going to get some ddr2-1066 ram so i can go up without ram holding me back. i'm at 3.4 ghz.

how are your temps with such a high overclock on idle, 100% load, system temp? ambient temp? i'm interested to know...
also what is your actual vcore in bios system health or in windows cpu-z or speedfan(vcore1)? vcore2?

thanks for the info.

 

[Master Shake]

What is the benefit of upgrading the mobo bios?

I am using the bios that came with mine

 

[wpcoe]

Originally posted by: Rex Ham
I've got the following readings but I think it's now the ram that's the problem (I say 'problem' - it's doing blummin' great to be holding up at 940mhz I think...)

If you don't already have it, I'd highly recommend you download memtest-86 from the Memtest86 website and let it run a battery of standard tests on your RAM.

You download an .ISO file, burn it to a CD and then boot from the CD. It will confirm if your RAM is stable at current BIOS settings.

I just noticed they are up to v.3.4 ... I'm out of date, I only have 3.3!

Even if you are sure the RAM is the culprit for your current oveclocking settings, memtest-86 is a good utility to have handy for troubleshooting any time when things start going wonky.

 

[Rex Ham]

Originally posted by: fausto412
how are your temps with such a high overclock on idle, 100% load, system temp? ambient temp? i'm interested to know...

Part answered in my orig post above :

Idle 42C - 60/61C under load. Speedfan is showing:-
Temp1 40C
Temp 2 39C

As for ambient - I don't have a thermometer so dunno on that one.

also what is your actual vcore in bios system health or in windows cpu-z or speedfan(vcore1)? vcore2?

thanks for the info.

Again stated in orig post - vcore 1.4125v cpu-z reporting it as 1.360 (1.328 under load) vcore 2 reported by spdfn as 2.11 but set to +0.2 in bios.

Regards

 

[wpcoe]

Originally posted by: Master Shake
What is the benefit of upgrading the mobo bios?

I am using the bios that came with mine

Well, one benefit can be the exhiliration from the chaos it invokes on your system when it causes problems.

Seriously, the general rule is that unless you need a new feature offered in a new BIOS, there is no reason to "upgrade."

Having said that, it seems that Gigabyte has been making changes to the various BIOS releases that are documented nowhere for the general public, so it's just a matter of trying the various ones to see if it fixes/changes something you have a problem with and/or adds something you want.

e.g. My mobo came with F2 BIOS, and in general things were going fine. I upgraded my RAM (from DDR2 533 to DDR2 800) and noticed that my RAM was being significantly overvolted. I tried F5 BIOS, and the same. Then I tried F7, and lo and behold, my RAM was being volted within the manufacturer's spec. Others, BTW, found just the opposite by "upgrading" to F7 ... their RAM was being overvolted in F7. Go figure.

I noticed other changes in the screen displays in the BIOS setup pages, too, but mainly cosmetic.

Long answer to a short question. Sorry!

 

[Rex Ham]

Originally posted by: wpcoe

Originally posted by: Rex Ham
I've got the following readings but I think it's now the ram that's the problem (I say 'problem' - it's doing blummin' great to be holding up at 940mhz I think...)

If you don't already have it, I'd highly recommend you download memtest-86 from the Memtest86 website and let it run a battery of standard tests on your RAM.

You download an .ISO file, burn it to a CD and then boot from the CD. It will confirm if your RAM is stable at current BIOS settings.

I just noticed they are up to v.3.4 ... I'm out of date, I only have 3.3!

Even if you are sure the RAM is the culprit for your current oveclocking settings, memtest-86 is a good utility to have handy for troubleshooting any time when things start going wonky.

I've run it yesterday - though only for about 45mins, and no errors appeared so I ended it.

Cheers

 

[Dexmaus]

Why is my case hotter than CPU? Speedfan reports 34C for Case, 22C for CPU at idle. Bio shows 33C for Case, 26C for CPU. is it possible?
I have CM690 Case, with 5 120mm fans. overclocked to 3.2ghz, 1.36vcore. when I run Orthos cpu goes 47C load in Speedfan.

 

[honolululu]

Originally posted by: Rex Ham
Got my E6750 running at 3.76Ghz on full load in orthos for 2hrs 44mins before it errored :-

Given the 0.1v over-volt from the board and my setting - that's only 2.1v(ish)....

D'ya think it'd be OK to add the extra 0.1v at this speed? Or would you up the vcore again a notch instead - the temps are OK to do so I think....

Cheers for any advice

That's a sweet looking overclock!
Personally I'd stick with the RAM voltage and bump the Vcore.
Great chip to give the sub 1V C1E voltages while stepped down.
__________________________
Waiting for my new RAM to get here. Supposedly Mushkin is sending out two new sticks with a shipping label to send mine back. :thumbsup:
With my one good stick in, I noticed the mobo was setting my command rate to 1T. I also installed two new intake fans for my case and I was messing around with overclocking my video card last night. Running 3DMark06 with 169.04 Drivers with F5 bios, closed case, fans on high.

Results Table

Best score = 13476 5943 6185 3308 621-1620-999 3.72 465x8
____________________________

Dexamus. Totally different setups, but I'm going to guess that "case" temperature is a motherboard sensor near your video card. Tcase should always be less than Tcore.

EDIT: Sorry that last sentence is not close to being accurate. There is no Tcore. The core is measured as Tjunction and the Tcase is on the Heat Spreader between the cores. Most everything I know about the subject comes from this great thread. http://www.tomshardware.com/fo...quad-temperature-guide
hich I had to read two or three times before I could start to make sense of it. I encourage you to go through the calibration mission. It's pretty cool when you're at the crystal cpuid stage. Steps away whistling.
____________________________

Oh yeah. The p35C-DS3R F8 BIOS is out.
1. Fix: Some of 1000 GB (1TB) HDDs will be detected size error.

 

[mrfatboy]

@rex ham

I don't know what you did to please the computer component gods but they sure smiled on you. Not only do you have an better OC at lower volts, you are doing it with higher cpu temps & slower 667 memory. What's your secret?


@conjugal & everybody

Have you tried the new F8 bios yet? What are the new vdimm voltages? Should I flash the F8 or just wait for F9? :laugh:

 

[Rex Ham]

mrfatboy - I know...... awesome innit?

In my defence I will say, I spent a LOT of time finding an easy mobo/cpu/ram combo to start on my OCing expedition. I'd read that this mobo was easy-peasy to OC and I'd also read a lot of great reviews on the Ballistix ram too - and everything's dropped into place nicely

I'm currently on 5.5hrs of Orthos testing at the moment with settings of :-

3.76Ghz (470x8) 1.4250vcore, +0.2 vdim, mch +0.1.

My temps are starting to get to the limits now though.....I'm hitting 65/66C maxed out :Q

 

[mrfatboy]

Time to buy a Tuniq Tower With your luck you are going to be able to OC to 4.0 on air!

 

[Rex Ham]

Originally posted by: mrfatboy
Time to buy a Tuniq Tower With your luck you are going to be able to OC to 4.0 on air!

Nah - cant be arsed with all the fuss just to get up a smidgin more. Isnt the Tuniq one of the coolers that you have to take the mobo out to fit it....?

I just wanted to see what I can get outta this set up....I'm more than happy with what I've got

I've just come down to go off to do a 12hr day shift ......and Orthos is still going @13hrs

See here

As the ambient has dropped with it being around 5am....temps currently showing 59/60C but last night with the heating on etc - it was hovering around 65/66C constantly.

I think it'll be going back down to 3.68 to run day to day.

Hi-ho,hi-ho, it's off to work I go......... :thumbsup:

 

[mrfatboy]

Ok guys...I just saw this overclocking video and it cracked me up:laugh: I think we all can relate to it

Overclocking Video

 

[fausto412]

Originally posted by: Dexmaus
Why is my case hotter than CPU? Speedfan reports 34C for Case, 22C for CPU at idle. Bio shows 33C for Case, 26C for CPU. is it possible?
I have CM690 Case, with 5 120mm fans. overclocked to 3.2ghz, 1.36vcore. when I run Orthos cpu goes 47C load in Speedfan.

Speedfan doesn't recognize the actually temp scale on some processors. add 15 to the numbers for each core and that is actual temp. you can make the offset permanent in speed fan. you idle idle temps cannot be lower than ambient, when my room is 30 celcius, my cores are at 40 celcius, and when my room is 25 celcius my core is at 31 celcius sometimes. if i didn't have the 15 degree offset my temps would be close to 0 degrees. iot's something a future update of speedfan will correct. the latest beta of core temp is the only one i know that will display correctly.

 

[fausto412]

f8 bios same as f7 as far as vdimm goes
f7 was supposed to fix voltage issue when set to vdimm of +4. guess that didn't work.

f6 bios gave me 2.25 on +.3 which is way better than 2.4 on +.4. i tried every bios in desperation.

 

[fausto412]

what are you cooling your cpu with now?