E6750 & Gigabyte P35C-DS3R Overclocking Thread

[mrfatboy]

No worries. What I was trying to say was depending on the vid card and how it is set up you can have higher 3dmark06 scores with lower clock/memory settings.

My scores might be higher then yours but my settings are higher. However, the guy (can't remember his name) serveral page posts back had a lower clocked card than mine but had higher 3dmark06 scores.

It's weird but I guess it can happen.

 

[quadraphonic]

Originally posted by: mrfatboy

Originally posted by: quadraphonic
Guys, I'm sure this is a stupid question, but will the tips in this thread also apply to OCing a P35-DS3P?

Most likely yes. However, the biggest issue seems to be with the DDR2/DDR3 overvoltage control. The two boards handle the voltages differently. Of course, the different bios versions affect the voltages differently also.

Just make sure your vdimm voltage is really outputing what you need. Use speedfan 4.33 and check vcore2. Don't fry your ram!

That's no problem.. I was going to leave my RAM running stock and just push the CPU cloick up to run 1:1. I suppose I might try tighter timings (I'm at 5-5-5-15), but I wasn't going to push the memory too hard.

 

[mrfatboy]

FYI, This looks like the final word from Gigabyte regarding the voltage problem.

Also, What is the "loadline calibration"? Is that new in the latest bios? What does it do?



Daer all
I got some update from our BIOS team.But I worry about the answer can not satisfied you guys.I know all of you are thinking when you plus any voltage to your memory, it's should show correct in your both BIOS and software testing, it 's reasonable.
However, our RD told me :
Because of the Vcore hardware design, both BIOS and software will show the number lower than normal voltage 25 to 50mV. But in fect the memory voltage can really reach the real voltage.

I think this is final answer from our RD. And did anyone see "Loadline Calibration" function in your BIOS? it might be helpful.
__________________
Janus Yeh
GIGABYTE Technical Support

 

[Conjugal Visit]

Originally posted by: mrfatboy

Also, What is the "loadline calibration"? Is that new in the latest bios? What does it do?

I have no idea.

 

[SniperDaws]

Theres a new F9 bios out, anyone want to try it ?

Happy Xmas and have top New Year.

 

[mrfatboy]

I copied this post from Stasio in the tweaktown forum. I can't wait to hear how the F9 bios works with the "loadline calibration". Could it be the holy grail for this board? :laugh:


27.12.2007-New Bios
P35-DS3-F11
P35-DS3R-F10
P35C-DS3R-F9
http://www.jzelectronic.de/jz2/index.php
About -"LOADLINE CALIBRATION(enable/disable):
The Loadline Calibration helps users enjoy the motherboard's ultimate OC capabilities while ensuring stable and opimal CPU voltage during heavy or low loadings.
Btw,CPU-Z, version 1.42.3:
http://bakkap.free.fr/Softs/cpu-z-142-3.zip

 

[SideShow]

Ok First up i would like to thank everyone that has posted here, Im a new to overclocking and you have all helped me out heaps. Now my overclock has been pretty text book no problems as of yet as you can see i have not needed to put extra volts thru much and i have got a stable OC at 3.391 at stock volts. I just wanted to know what you guys thought of it and wheather i have done anything wrong or could be done better.

I have re-enabled CIE, TM2 and EIST after the OC. It has worked with both the multiper and volts. My readings go from 1.248 / 8*425 @3.391 To 1.024 / 6*425 @ 2.544 in cpu.z

I put +0.1 in the ram volts which gives me a reading of 2.02. If i put +0.2 in there it get a reading of 2.16 in Speedfan. My ram is corasir xms2 which is EPP rated at 2.1 so i wasnt sure what to put there but i didnt want to overvolt it so i chose the lower and it passed memtest no errors. I was hopeing when i put in the needed 2.1 volts it would automatcially change the timings to 4,4,4,12 but it didnt so i changed them manually.

As you can see from my settings here i changed very little and i ran memtest and 13 hours orthos so i think its stable.

Heat at idle are very good cos i drop the volts and mulitpler back to 1.024 and 6 and it idles at 36 degrees orthos stress goes up to 57 max (This is with coretmep 0.95.4 so the 15 degrees is added already) Its 25 degrees in melbourne right now.

One thing i did notice that was strange was i have said to run 425mhz in the bios but it reads as 424 in cpuz for the bus speed and the dram frequencey. No clue but im not to worried about that would of like to be a nice round 3.4 but meh im happy either way.

Im not sure weather its worth trying to go for 3.6 and adding the extra voltage. Im not sure if the gain will be enough to warrant the extra stress.

Bios Setup
-----------------
Robust Graphic Booster Auto
CPU Clock Ratio 8X
CPU Host Clock Control Enabled
CPU Host Frequencey (mhz) 425
PCI Express Frequency (mhz) 100
C.I.A.2 Disabled
!! Performance Enhanced with Turbo
System Memory Multiplier (SPD) [2.00]
Memory Frequency (Mhz) 800 850
High Speed Dram DLL Settings [option 1]
DRAM Timing Selectable (SPD) [manual]
CAS Latency Time 5 [4]
DRAM RAS# to CAS# 5 [4]
DRAM RAS# Precharge 5 [4]
Precharge delay(tRAS) 18 [12]
ACT to ACT Delay (tRRD) 3 [Auto]
Rank Write to READ Delay 3 [Auto]
Write to Precharge Delay 6 [Auto]
Refresh to ACT Delay 42 [0]
Read to Precharge Delay 3 [Auto]
tRD 7 [Auto]
tRD Phase Adjustment 17 [Auto]

System Voltage Control [Manual]
Ddr2/ddr3 OverVoltage Control [+.1V]
PCI-E OverVoltage Control [Normal]
FSB OverVoltage Control [Normal]
(G)MCH OverVoltage Control [Normal]
CPU Voltage Control [Normal]
Normal CPU Vcore 1.31250V


Now some questions this seemed a little easy in my books i just want to know if i have done things right. I havnt put any extras volts through the FSB or NB heatsink so temps there should be fine.

My related FSB in CPUz is at 1696MHz is that normal ?

what other problems could i face doing this way ? as i said it seems a little easy so i think i have forgotten something here.

 

[mrfatboy]

SideShow,

Welcome to the thread It sounds like you did everything right and got a nice easy overclock. If you are orthos stable (like you said you are) you are good to go. Congratulation! I'm glad this thread helped you.

You asked if it was worth overclocking higher? I'm running 3.6 24/7. I have to put more volts in but who cares I have read multiple times 1.45v is the save limit. They say chips last 10 years but if I burn mine out in 5 who cares. I will have new computer anyway by then.

This was my first OC and I wanted to see how fast I could go safely. 3.6 @ 24/7 was good enough for me Do you really need the extra speed or do you want some bragging rights?

 

[Conjugal Visit]

@sideshow - First, Welcome to the Anandtech Forums! Looks perfect. It IS easy if you do a little reading beforehand, which you did.

Regards,

 

[Vipeax]

As the others already mentioined, welcome SideShow
What I would recommend is trying 5-5-5-12 with ram ratio to 2.4 and if that is stable even 2.5
I did this with +0.2 in de bios which is still 0.2V below the recommend voltage for my ram.

Also, I have had my E6750 for almost a month now, but I am already leaving it behind. Tomorrow I will have a Q6600 . Hopefully it will be a good clocker . My system is 450FSB stable, so with the 9 multiplier 4GHz is possible. The CPU will be the limiting factor here.

 

[SniperDaws]

ok im still stable using F9 bios, i cant say much more about it, ill have proper mess with it in the morning cos im off to bed now im shattered.

F9 fixed my boot problem when i had my cpu set to default clocks.

 

[SideShow]

Thanks for the speedy responses guys, you have taken a little stress off my shoulders. Still going no probs so im pretty stoked atm.

Originally posted by: Vipeax
As the others already mentioined, welcome SideShow
What I would recommend is trying 5-5-5-12 with ram ratio to 2.4 and if that is stable even 2.5
I did this with +0.2 in de bios which is still 0.2V below the recommend voltage for my ram.

Cheers for the advice, Im not to sure on ram timings but i would of thought that keeping the timings tighter and in a 1:1 ratio would of been better there. Is there any perfomance gains from doing it the way you mentioned ? As i said in my last post i dont just want to start adding extra volts and stress unless there is some gain or stablilty from doing it and im going rock solid atm so im seeing little point to start rocking the boat.

 

[Vipeax]

I dropped 3 seconds in superPi with it,

also my new friend arrived today: http://valid.x86-secret.com/show_oc.php?id=290100

 

[mrfatboy]

Originally posted by: Vipeax
I dropped 3 seconds in superPi with it,

also my new friend arrived today: http://valid.x86-secret.com/show_oc.php?id=290100

You are the luckiest S.O.B. I know. And you are doing that with 4 gigs of RAM. You are killing me

 

[Vipeax]

What does S.O.B. mean?

 

[fausto412]

Originally posted by: Vipeax
What does S.O.B. mean?

SON OF A BITCH

 

[Vipeax]

Advantages of working while still living with your parents (17 years old...)

 

[BlueAcolyte]

GAH!

 

[DWells55]

I'm using the P35-DS3R with my E6750, but I assume the answers are the same for my questions and you guys seem to know your stuff. I've currently got the CPU at 3.2GHz (8 x 400MHz) with Corsair XMS2 @ the normal 400 MHz and 4-4-4-12 (overvolted .3v to the EPP-specified 2.1v since, from what I read, it appears the P35 does not have the RAM voltage issues the P35C does) and all the rest manually set to match the auto settings. However, I noticed that the thread creator, mrfatboy, had his Refresh to ACT Delay at 0 instead of the normal auto detected 42 setting which I'm using. Is there a reason for this? Is it faster/more stable/better somehow? I'm not familiar with RAM timings and have a basic knowledge of what the 4-4-4-12 timings are and that's about it. Should I change my 42 to 0?

Also, I noticed you manually had your PCIe frequency set to 100MHz. Mine's currently set to auto despite my overclock. Some places I've heard that auto is dangerous, I saw a guide for overclocking the Core 2 Duo with a Gigabyte board that had it set to auto, and I've seen some forum postings saying Gigabyte boards won't overclock well without it set to auto. So I've been getting mixed messages here. However, the system has been stable for the past six and a half hours I've been stress testing with Orthos and it had no trouble with an initial 3DMark03 run. Should I switch it to a fixed 100MHz?

Also, if I do change either of these settings, do you think I need another 18+ hour Orthos run to test stability? Thanks in advance.

 

[mrfatboy]

dwells55, welcome to the formuns

I set my PCIe frequency manually to 100Mhz because that is what I read on serveral OC threads. I also read that the AUTO setting is default to 100Mhz however nobody is 100% sure. That's why I manually set it.

I raised the "Refresh to ACT delay" setting (42 or 0) question serveral thread pages ago. I never changed my setting to 0. It came default that way. Others have said theirs came default at 42. I can't remember the exact out come of the discussion but I think there was no difference. I seem to remember somebody saying the 0 setting was the auto setting. But again, nobody could back that up with real data.

After setting evertying up, I would let Orthos run over night just to make sure.

 

[DWells55]

Thanks for the welcome and the quick response

My system just finished a 19 hour Orthos run followed immediately my 2 hours of Memtest86+, so I'm fairly certain it's stable at 3.2GHz. I'm very anxious of upping the voltage since I don't like noise, heat, or spending more money if I screw up, so chances are the CPU is going to stay around there at the current 1.35v. If I'm feeling adventurous over the weekend I'll see if I can push my RAM up to 866 MHz and the CPU to 3.4 something GHz (whatever 8 x 433MHz is). In which case I'll switch my PCIe frequency to 100MHz as you suggested, thanks. In the meantime however, I guess I'll leave it at auto unless anything funny happens while gaming or benchmarking. If only there was a way to check what it was running at from within Windows.

My system reported the Refresh to ACT delay at 42 when the RAM was set to the auto SPD settings. However, it immediately hopped down to 0 once I changed it to manual. Not knowing what it is, I put it back to 42 manually. I just did a bit of Googling and it seems there's a lot of people setting it to 0 and there's a lot of people setting it to other stuff with 42 being common. I saw someone saying to try 51 instead of 42 because it would allow for "more overclocking headroom." So if you're ever having stability issues, try upping it to 42 maybe? I'm just going to leave mine be since performance seems pretty solid. Despite all the different things I saw on Google, there was nothing explaining what exactly it was. I guess it's not that important?

This has actually been the first time I've ever overclocked a CPU. I've been building my own PCs and overclocking my video card for a while now but always been a bit nervous with the CPU. It's gone quite smoothly so far. I've always had a decent grasp on the process, but the stickied Core 2 Overclocking guide here really helped me brush up a bit before I finally did it. Now I just gotta get a new cooler for my 8800 GT to replace the whiny stock one and hit my goal of 13,000 in 3DMark06. Thanks again.

 

[Conjugal Visit]

re: Refresh to ACT delay

I did some googling and experimenting on this issue a while back. I came to the conclusion that the default is not zero - instead, when you move into manual settings the bios zeros it out and waits for a value. I seem to recall that stability was an issue at values lower than the 29 I've set mine to, but each rig is different to be sure.

 

[DWells55]

Good to know, all the more reason to leave mine at 42, thanks.

 

[shadd]

Hello lads, been following this thread and using it as a guide quite regularlly, so thanks first of all. Now i just have a few questions as iv not read every single page so you may or may not of gone over this but i just want some clarification/reassurance on my temps and voltages.

Basically i get 3 different readings from the 3 type of software im using:

Temps

Coretemp=48-50C idle - Under Orthos blend=68-70C
Speedfan=35-35C idle - Under Orthos blend=50-52C
TAT=35-39C idle - Under Orthos blend=57-59C

Voltages for RAM

Speedfan=2.19v
Everest Ultimate=2.1V

 

[mrfatboy]

Shadd, Welcome to the Forums!

First off, I believe you are using old version of Speedfan and TAT. They are 15C below what the actual temp is. You need Speedfan 4.33 & Coretemp 0.95.4 for acurate temps.

Second, your vdimm voltage seems a little weird to me. It might be the fact that you have 3 gigs in your rig. Using F2 (and 2 gig) the voltages have been:

Delta---------Actual voltage
+.0v----------2.00v
+.1v----------2.00v
+.2v----------2.13v
+.3v----------2.24v
+.4v----------2.37v

What is the required voltage of your ram? I thought corsair is 2.1v. Using my chart you only want to use the +.2v setting to get 2.13v. You could be overvolting your ram now.

Definately read more of this thread all of this info is in there Especially in the first couple of pages