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post #1301 of 1922
Quote:
Originally Posted by onslaught_ View Post
So I left Prime95 last night and woke up to a restarted PC
So then I made the changes ~sizzle~ suggested and I got BSOD's just after booting up the OS.
This is most likely simply due to disabling Load Line Calibration. It is expected to have to raise the voltage setting after making that change unless you had some head room on the vcore to begin with.

Quote:
After a few tweaks again, I'm currently at these stable settings.

CPU Ratio Setting [21]
Intel SpeedStep [Disabled]
Xtreme Phase Full Power Mode [Auto] -> Enabled
BLCK Freq [181]
PCIE Freq [100]
DRAM Freq [1448Hmz] ->1086
QPI Freq [Auto]

CPU Differential Amplitude [Auto] - I left this on auto still. Is 800mV ok with all these minor changes?
CPU Clock Skew [Auto] - I also left this on auto, not sure if this even plays a part in OCing. Please advise *hehe*
CPU Differential Amplititude represents the amount of noise immunity. The higher your CPU frequency goes the more noise will be present in the clock signal. Raising this voltage a bit will help to keep that noise from causing stability issues. For the most part though I'd agree it's more of an extreme overclocking setting and probably won't make much difference to you until you really start pushing it.

CPU Clock Skew -- Short story... leave it in auto unless you have a few spare days on your hands for trial and error testing.

Quote:
CPU Voltage [1.3] -> 1.35
IMC Voltage [1.2] -> 1.3
DRAM Voltage [1.65] -> 1.5
CPU PLL Voltage [1.9]
PCH Voltage [Auto] -> 1.05
CPU PLL Voltage of 1.9 really isn't needed and is more likely to cause you problems then it is to help. 1.8 is a much better starting point.

Quote:
Load-Line Cal [Auto] -> Disabled
CPU Spread Spec [Disabled]
PCIE Spread Spec [Auto] -> Disabled

Temp: 58 Degrees Celsius (Max)

20 minutes with Prime95 and still stable.
Maybe I'll run IBT right after for another 20 minutes..
20 minutes of Prime95 isn't really going to tell you much. I like to do a series of increasingly harder stablitly tests.

I'll do 5 runs of IBT standard as I'm making small increases in the baseclock. This isn't a very hard test but helps me stay in the ballpark on the way up.

Then once I reach my baseclock goal (say 191 for example) I'll run 20 runs if IBT max. This is a pretty difficult test and I will see the highest core temps with this test, it isn't all that time consuming though.

After that I'll run extensive testing with Prime95. If I can do the above and make it 12 hours or more with Prime95 small and then Blend or at least Blend I'll call it stable. Occasionally I'll have to make another adjustment while running F@H but those are pretty small adjustements and expected.

Quote:
In regards to ram, can I just leave the timings on auto for now and maybe play around with them when I get the pair of snipers into my PC?

So the lower the RAM freq the tighter the timings..vice versa?
Yep that would be fine to leave the timings in auto. They just might set them a little looser then you might be able to get in manual but most of the modern boards do a pretty decent job auto setting the timings. And yes as you raise the DRAM frequncy expect looser timings. Also frequency > than timings. Even at that though the average user would be hard pressed to notice a ~200MHz change in the RAM.



Quote:
Originally Posted by 78@pwnt4lif3 View Post
Do i really need to update bios? I never had problems with this system at all. Is it needed? Especially for preparing to overclock. Well i do know it's probably needed because they fix it to make things stable i believe. I have overclocked so many times but i'm still not familiar with the new processor bios because they look so much different is why.
Well ya I should have said latest STABLE BIOS. Updating is a good idea, especially when starting a fresh overclock. Once I get it stable if I'm fine with where it's at and not having any trouble I won't worry about it usually but I'll usually at least take a read threw the changes.
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post #1302 of 1922
Quote:
Originally Posted by ~sizzzle~ View Post
2.9 eeewwhhh I feal for ya.
Stupid thread, haha. I got the bug again...especially with the PC eater BF3 out now. I have always gone for broke (4 Ghz) and usually get frustrated, but this time tried going slow. I'm up to 3.2Ghz on low volts, barely passes 50C, and it's been stable through 20 LinX runs, and an hour of BF3 Caspian Border!

Sure it's not 4, but it's 300 more than before AND stable! I like this method.
post #1303 of 1922
Quote:
Originally Posted by Jodiuh View Post
Stupid thread, haha. I got the bug again...especially with the PC eater BF3 out now. I have always gone for broke (4 Ghz) and usually get frustrated, but this time tried going slow. I'm up to 3.2Ghz on low volts, barely passes 50C, and it's been stable through 20 LinX runs, and an hour of BF3 Caspian Border!

Sure it's not 4, but it's 300 more than before AND stable! I like this method.
I know that bug, we're old friends.
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post #1304 of 1922
I've got 2 full weeks before it releases, so that's plenty of time to ramp it up. I'm going to set a goal of 3.6 Ghz this time, so I'm not disappointed. I'd love to keep it below 80 C in LinX.
post #1305 of 1922
Figured maybe someone can take a look at my specs and give me some ideas. Not that i'm certain enough to try. Cuz i know everyone's chip may be special overclockers but every motherboard is also different so we all get different results however!

I'm running GSkill ram 8 gigs at 1600mhz cuz they are suppose to run at that speed. Umm the volts are..

http://www.newegg.com/Product/Produc...82E16820231277

Got 4 of these running at 8 gigs. They support 1.5v.

Here's a picture of my cpuid.



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post #1306 of 1922
*bump* Really? No reads?
post #1307 of 1922
I didn't really see a question?
post #1308 of 1922
78 I'm a little unsure how to respond here so bear with me a moment.

I look at the specs in your sig rig and they look solid. Then I look at the CPU-Z screenshots and I'm wondering wth is going on. I guess I know what is going on but, why ?. Idling at stock speeds at a voltage that is probably close to stock load voltage. 160 X 18. Blah, why, why why.

Rereading what you wrote I think I get where you are coming from. And it wouldn't shock me if you said this is an xmp profile.

Quote:
Cuz i know everyone's chip may be special overclockers but every motherboard is also different so we all get different results however!
This is true, each 760 is a little different then the next one. You could build two identical systems and expect the min. stable voltage at a given frequency to be different. Having different motherboards or psu or RAM introduces even more variance. But I can still take my current 760 throw it in a GD80 with some nice GSkill RAM and decent Antec PSU and still come out with a pretty nice overclock in short order.

Quote:
I'm running GSkill ram 8 gigs at 1600mhz cuz they are suppose to run at that speed.
I see this as a common mistake. They have been tested and are guaranteed to be stable at 1600MHz. People tend to get hung up on having to get their moneys worth out of their RAM and overlook that they might be able to get a better overclock with 1448Mhz,1528Mhz etc...


************************************************** *********************************'

Anyway.. I'm not sure what you are looking to do here. You have a very nice system and can get much more out of it then what you currently are.

My suggestion, take some time to get to know your BIOS, make a BIOS template and shoot for a small reasonable overclock like 171 X 21. That won't be pushing anything too hard and should go smooth and at the same get you some experience overclocking your system while netting you a nice performance boost over stock.

Also no need to take screen shots of CPU-Z like you did. Just hit validate, then under the online section enter your user name, check publish online and click submit. Then post the url of the validation page. Much easier then screenshots of CPU-Z. My latest stable for example http://valid.canardpc.com/show_oc.php?id=2039324
Edited by ~sizzzle~ - 10/10/11 at 7:55am
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post #1309 of 1922
I really wish I hadn't clicked on that.
post #1310 of 1922
Hello community, glad to be here. I need some help from You.
It is quite funny, because I thought I had a sweet spot in 3.8 Ghz on my system, but I did not like Vcore of 1.29xxx something, as I seen some users had 4 + Ghz with same voltage. So I have done some changes, upped vtt, lowered Vcore, and everything went bad, bsod's, tried changing some values again, and now I am where I started. Loaded optimized defaults, and windows even did not boot, just freeze at welcome screen. My bios:








I figured, bios does not know my default Vcore for my i5 760. Changed it to 1.2, and now i can use this forum at least for help.

1. Is my first step to know what is my default vcore? How to do this? I wonder why I can not boot Windows with auto settings?
2. In pic 3 - I read, that Dram value cannot differ from VTT more than +-0.5 - did I understand that correct? So what values should I change there? If vtt is 1.31 - Dram?
Edited by asnedaigas - 10/12/11 at 8:23am
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