E6750 & Gigabyte P35C-DS3R Overclocking Thread

[MaDMvD]

I am able to do most, if not all tasks I normally would do on 3.6 - I simply can't run Orthos. I can even run Prime95 for a while without errors. I don't consider not being "Orthos stable" a big deal, as long as I don't get BSODs doing anything else.

 

[mrfatboy]

Originally posted by: MaDMvD
I am able to do most, if not all tasks I normally would do on 3.6 - I simply can't run Orthos. I can even run Prime95 for a while without errors. I don't consider not being "Orthos stable" a big deal, as long as I don't get BSODs doing anything else.

Thats sort of scary. I depend on my computer 24/7. I can't afford to have bits dropping out from time to time. if you are only doing work that is "read only" than I guess it's not much of a problem. You would always be able to try again.

When it comes to file corruption that is scary stuff

 

[Vipeax]

Originally posted by: mrfatboy
Thats sort of scary. I depend on my computer 24/7. I can't afford to have bits dropping out from time to time. if you are only doing work that is "read only" than I guess it's not much of a problem. You would always be able to try again.

When it comes to file corruption that is scary stuff

Exactly,
I used to ignore orthos as well, with my old setup (Opteron 170) at 3.4GHz it did everything, except stress stable (error(s) after X time). I ignored that for a long time, until I got a BSOD, which made my Windows installation in corrupt, forcing an OS reinstall.


@ fausto412, sorry I didn't notice your reply earlier. I am uploading a video for you at the moment. I will edit this post when it is done.

Ok here you go:
Real Resolution (might be to small)
Forced Resolution (vision may look stretched)
Had to take my whole setup out of my PC case for it, but now I had some time to test the lowest voltages on 3.2GHz and 3.6GHz (this was a boot on 3.6GHz on stock voltage by the way).

 

[fausto412]

Originally posted by: Vipeax

Originally posted by: mrfatboy
Thats sort of scary. I depend on my computer 24/7. I can't afford to have bits dropping out from time to time. if you are only doing work that is "read only" than I guess it's not much of a problem. You would always be able to try again.

When it comes to file corruption that is scary stuff

Exactly,
I used to ignore orthos as well, with my old setup (Opteron 170) at 3.4GHz it did everything, except stress stable (error(s) after X time). I ignored that for a long time, until I got a BSOD, which made my Windows installation in corrupt, forcing an OS reinstall.


@ fausto412, sorry I didn't notice your reply earlier. I am uploading a video for you at the moment. I will edit this post when it is done.

Ok here you go:
Real Resolution (might be to small)
Forced Resolution (vision may look stretched)
Had to take my whole setup out of my PC case for it, but now I had some time to test the lowest voltages on 3.2GHz and 3.6GHz (this was a boot on 3.6GHz on stock voltage by the way).

nice video clip...i can't see myself taking my board out to do that lol.
stock voltage is 1.325 as far as a i know...cpu-z shows 1.31 in the video. if it's orthos and prime stable at that voltage for 5+ hours each then your cpu should do 3.8 easy man. mine does 3.6ghz at 1.36 volts...mine is good, yours is bad ass

 

[Vipeax]

Weird, it always shows 1.35V for me. This is different with a lot of motherboards it seems so, I just set it to stock as BIOS told me. It ran 2 hours stable on these settings before. Leaving my pc for a stress test tonight. The shop where I ordered my new fans still say that the fans are still in germany. Ordered them more than 7 days ago sigh. They promised delivery last wednesday.

I screwed up with the thermal compound, so I might remount it all tomorrow. Will record you the full process. I have to warn you that it might look lame, it is hard to reach the nuts after sticking in the bolts and putting the Scythe infinity onto them. Especially without messing up the thermal compound (which I did today, because I wanted to be done quickly).

 

[mrfatboy]

@vipeax

Holy crap! 3.82ghz @1.3625 with 4 gigs of memory installed on this board!!!!!!!!!!!!!

And on top of that you have OC your PC6400 ram to 1150!!!!!!!!!!!!!!!!

:thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup:

I bow to the master



I could not even get my rig to POST @ 3.6 when I put in my 2nd set of ballistix

 

[Vipeax]

Hey,

thanks man

I have been able to boot the ram somewhere between 1225-1250 before. I am happy I switched from Kingston. Max OC on them was 900MHz .

Here is a small boot for you:
Validation
CPU-Z Spam
I don't have the right cooling for +0.4V now, so I don't want to go further now.

 

[Conjugal Visit]

Originally posted by: Vipeax
Hey,

thanks man

I have been able to boot the ram somewhere between 1225-1250 before. I am happy I switched from Kingston. Max OC on them was 900MHz .

Here is a small boot for you:
Validation
CPU-Z Spam
I don't have the right cooling for +0.4V now, so I don't want to go further now.

Hey Vipeax - maybe it's late and I'm confusing myself, but those numbers in CPU-Z...I see the Ram clocked up to 598...ratio at 5:8. I see the CPU at 2.992GHz...FSB at 374 (x 8=2.992.) Am I missing something? You said 3.8 O/C?

Also, you've indicated you boot to 3.8 - are you stable?

Regards,

 

[Vipeax]

I just wanted to show him that the ram wants to run faster then

And on top of that you have OC your PC6400 ram to 1150!!!!!!!!!!!!!!!!

Yes it is 12 hours orthos stable on 3.82GHz. But my Super PI score was better on 3.74 than 3.82. So i have decided to clock it a little back (3.6) so I can run on 1.35V which is very safe.
(3.74 = 13.410 3.82 = 13.479)

Edit:
Basically all the games want to run perfect on 3.6 with 1.35V so no need to run it with higher voltages for gaming unless I want a higher benchmark score.

 

[omgbossis21]

I just wanted to chime in on this thread and tell you guys how lucky you are. My e6750 on my ds3r board will only boot 3.6 ghz with a vcore set at 1.59xx (the highest 1.59 before 1.6) which gives me 1.552 at idle and 1.520 under load. Any thing less fails orthos. I have an ultra 120 cooler so temps under load are 60 max. The board has a problem and cannot boot when vcore is set at 1.6, system hangs before it even starts loading windows. The next setting is 1.8 then 2.0 and i wont touch voltage that high. The vdrop and vdroop is miserable and holding me way back. I may have to save for another chip.

 

[fausto412]

Originally posted by: omgbossis21
I just wanted to chime in on this thread and tell you guys how lucky you are. My e6750 on my ds3r board will only boot 3.6 ghz with a vcore set at 1.59xx (the highest 1.59 before 1.6) which gives me 1.552 at idle and 1.520 under load. Any thing less fails orthos. I have an ultra 120 cooler so temps under load are 60 max. The board has a problem and cannot boot when vcore is set at 1.6, system hangs before it even starts loading windows. The next setting is 1.8 then 2.0 and i wont touch voltage that high. The vdrop and vdroop is miserable and holding me way back. I may have to save for another chip.

i feel for you dude. i just can't believe that you can't do better.
do you have latest bios for your board?
turn that performance enhance crap down to standard. sure it's not your ram holding you back?
vdrop, vdroop on my board doesn't hold me back.

 

[omgbossis21]

I have lowered the multiplier and raised fsb up too 495 with a 1:1 ratio and was orthos stable overnight. I know for sure its the processor. Performance enhance is a wonderfull thing, benchmark with everest at each settings. You will see the memory latencies go way down when set to extreme, it really helps bandwidth too. I tried it on standard anyways and it made no difference, im 100% sure its the processor. If i lower vcore one notch orthos will crash. This chip is just insanely voltage hungry for some reason. I have updated to the latest bios i think its f10, it didnt change anything. I was looking for a working vdroop mod to get a higher overclock but with the voltage i will need its not worth it, best to buy another chip.

 

[Vipeax]

I recommend you to wait until january with the new intels releasing.

 

[fausto412]

Originally posted by: omgbossis21
I have lowered the multiplier and raised fsb up too 495 with a 1:1 ratio and was orthos stable overnight. I know for sure its the processor. Performance enhance is a wonderfull thing, benchmark with everest at each settings. You will see the memory latencies go way down when set to extreme, it really helps bandwidth too. I tried it on standard anyways and it made no difference, im 100% sure its the processor. If i lower vcore one notch orthos will crash. This chip is just insanely voltage hungry for some reason. I have updated to the latest bios i think its f10, it didnt change anything. I was looking for a working vdroop mod to get a higher overclock but with the voltage i will need its not worth it, best to buy another chip.

i feel for you man. there is always the next chip....you can probably use that e6750 for a year and then get the best chip for 200 bucks by then and use this same motherboard it's what i'm going to do.

 

[Guyofpie]

Hey guys, I'm new to this forum (and overclocking ) and I'd like to ask a few questions.
I can get my E6750 to run at 3.7GHz at 1.3675V and its Orthos stable for 12 hours. However, Memtest shows that my RAM has errors at this OC. So my question is, is Orthos stable good enough, or should I underclock my CPU until the RAM has no errors? If my RAM has errors, will that negatively impact the computer overall, or is it just a minor detail? Thanks for any replies .

 

[MaDMvD]

Originally posted by: Guyofpie
Hey guys, I'm new to this forum (and overclocking ) and I'd like to ask a few questions.
I can get my E6750 to run at 3.7GHz at 1.3675V and its Orthos stable for 12 hours. However, Memtest shows that my RAM has errors at this OC. So my question is, is Orthos stable good enough, or should I underclock my CPU until the RAM has no errors? If my RAM has errors, will that negatively impact the computer overall, or is it just a minor detail? Thanks for any replies .

Well, if you're concerned about dropped/corrupt information from your CPU (which is why you even care about Orthos), then you should be even more about your RAM. RAM errors can make a lot of weird things happen - I've seen some strange ones... I would have to agree with these guys and say make sure everything is completely stable, for your own good (longterm). I've just had to clock down to 3.2 and very slowly move back up, taking notes on how much voltage is needed for every 200MHz step. I had tried 3.6 but it started really starving for voltage, and was definitely not Orthos stable. Good luck, you seem to have an E6750 from a nice bin, like many others, apparently...

 

[Vipeax]

Originally posted by: Guyofpie
Hey guys, I'm new to this forum (and overclocking ) and I'd like to ask a few questions.
I can get my E6750 to run at 3.7GHz at 1.3675V and its Orthos stable for 12 hours. However, Memtest shows that my RAM has errors at this OC. So my question is, is Orthos stable good enough, or should I underclock my CPU until the RAM has no errors? If my RAM has errors, will that negatively impact the computer overall, or is it just a minor detail? Thanks for any replies .

Hey,

welcome

looks like you also have a great overclocker. Have you tried a memtest on stock speeds? Out of 5 memtests I got errors 3 times (on 3.8) it's weird, because 2 tests went perfect and it is orthos stable for 14 hours.
The worst thing that can happen is freezes or BSODs/auto reboots. If this doesn't happen under 100% load/high ram usage you should be safe. I haven't found the answer for it yet myself.

Edit: It seems I don't get errors when giving it +0.4V (2.2V)

 

[Conjugal Visit]

@Guyofpie - Welcome to the Anandtech forums! Hopefully we can help you here. Personally, i wouldn't be comfortable with any Memtest errors on my ram. Make sure you are running the correct version first. When you error in Memtest, is it pretty immediate? As in the first sweep? I'm going to assume you are running your memory at 1:1 ratios (2.00 in your bios.) You have two choices, in my opinion. You can adjust your ratios to drop your Ram speed, or leave it at 1:1 and reduce your FSB - and your CPU's effective overclock. Personally, I'd do the latter. Look at my sig. 3.52GHz, pretty low vcore, and running 1:1, utilizing low latencies. I suspect if you and I benchmarked, I'd be competitive due to the lower latencies. Honestly, I'd drop your FSB to 440-450 (3.52GHz-3.60GHz) and call it a job well done, confirming everything with Memtest and Orthos. Let us know what you come up with and welcome again.

Regards,

 

[biltong]

@Guyofpie - one thing worth trying is swapping the RAM modules around. I found that if for example I'm running in the yellow slots with the RAM modules in one position, I get errors. Swap them round and the errors disappear. Also, try the red slots and do the same (try with the modules in one position and then swap them round).

Finally, if you haven't already tried this, raise the (G)MCH by a notch. This also seems to affect memTest86+ results.

 

[Vipeax]

Some 3.2GHz results with undervolting. I haven't really tried to reach the limit yet, but as far as temps this is awesome.
Idle
Orthos CPU (100% load)

 

[Guyofpie]

Wow, thanks for all the quick replies! I have tried running Memtest86+ at stock speeds and there are no errors. I'll try all your suggestions later today, and hopefully one of the solutions will work. Just one quick question though, how do I lower the RAM ratios so that the RAM will increase at a lower rate than the FSB (ie something like 6:5) ? Is that even possible?
Thanks again for all your replies.

 

[Vipeax]

Nope, only 2.0 or faster.

 

[MaDMvD]

Looks like I was able to get 3.2GHz stable for 8 hours using Orthos. I'm currently pushing 1.392v idle and 1.376v load (actual voltage) - I believe it's set to 1.4250 in BIOS. What would you guys recommend: finding the lowest stable voltage at this speed or bump up the multiplier while staying at current voltage? If the latter, what increment? 100-200MHz steps?

 

[MaDMvD]

Originally posted by: omgbossis21
Performance enhance is a wonderfull thing, benchmark with everest at each settings. You will see the memory latencies go way down when set to extreme, it really helps bandwidth too.

This is very true. That setting has made all the difference in the benchmarking I've done so far, much more so than overclocking the CPU itself. When set to standard, miserable results are achieved.

 

[Vipeax]

MaD? Do you really need that much voltage for 3.2GHz? Mine was stable at 1.285 in bios at these speeds. With the ram running on a 2.5 ratio.
Maybe I am just lucky i guess.

Keep in mind that overvolting a CPU does decrease it's life. If the games (or what you use your pc for) run fine (or are not CPU limited) keep it like this. My thoughts.