The Official OC (OverClocking) Thread! [page 347/451]

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spamual

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22. September 2008 @ 18:58

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yeah if only it worked like that in chips before the E0 E8600....if only...

:D HAHA

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22. September 2008 @ 19:01

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i know, your right. was just showing then even with the pathetic stock cooler 4ghz could be reachable, so 4.5 should be a minimum with water cooling.

I think that it will hit 4.5 but probably not stable. I realize that dual cores have a better chance at really high clocks but I think that around 4.2 GHz (maybe a little more) is as good as its going to get and be stable.

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sammorris

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22. September 2008 @ 19:05

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with a very high voltage I reckon 4.4 is doable, but I reckon that will be in the higher 1.4s to pull that off.

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22. September 2008 @ 20:10

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The problem with pushing unrealistic high overclocks is that one begins to face a number of issues. Too high voltage will leak which will increase heat and speed up electromigration. Also the law of diminishing returns comes into play which means that the performance gains aren't really there along with instability and write back errors. Still with the right cooling 4.2 GHz or so just might be possible.

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22. September 2008 @ 20:19

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Originally posted by spamual:
i know, your right. was just showing then even with the pathetic stock cooler 4ghz could be reachable, so 4.5 should be a minimum with water cooling.

spamual,
What I'm seeing in most forums I visit is 4.2-4.3GHz on water for the E8600! Still, If you don't go NutSo, give it your best shot!

Best Regards,
Russ

GigaByte 990FXA-UD5 - AMD FX-8320 @4.0GHz @1.312v - Corsair H-60 liquid CPU Cooler - 4x4 GB GSkill RipJaws DDR3/1866 Cas8, 8-9-9-24 - Corsair 400-R Case - OCZ FATAL1TY 550 watt Modular PSU - Intel 330 120GB SATA III SSD - WD Black 500GB SATA III - WD black 1 TB Sata III - WD Black 500GB SATA II - 2 Asus DRW-24B1ST DVD-Burner - Sony 420W 5.1 PL-II Suround Sound - GigaByte GTX550/1GB 970 Mhz Video - Asus VE247H 23.6" HDMI 1080p Monitor

rubixcube

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22. September 2008 @ 20:35

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OK so I have long wanted to break the 4.0ghz mark on my PC, and at the same time have it stable too. I'm running an E6750 with a TRUE120 heatsink, on an Evga 680i motherboard, inside an Antec 900 that is completely stocked up with fans. Cooling shouldn't be a problem. I'm currently at 3.6ghz stable, from memory my vcore is at 1.475v (I thought it was a little too high but its not stable under this :S) But I'm a little unsure of the upper limits of these things, so I don't really want to push it any further without asking, in case I get a meltdown :) I have tried using this vcore setting and jacking it up to 3.8ghz but it gets all buggy when I boot in to windows, which usually ends in a BSOD. I know its not as simple as just bumping up the vcore and cranking the FSB, so what else do I have to increase to get her running steady? As we speak, room temp is probably about 30c and I'm idling at 34-36. Load is about 50 or so.

Oh, and my RAM is capable of 1066mhz but if I use the enhanced performance profile it puts the voltage up a little too high for my liking (2.4v or something) so running in unlinked mode can anyone recommend what to set my RAM speed at, and also the voltage? It's G.Skill PC8500.
Cheers :)

spamual

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22. September 2008 @ 21:49

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what is your NB voltages?

increace the voltages to 1.5, do not go over this, and push the FSB up to 470

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22. September 2008 @ 23:02

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rubixcube,
i don't think you will get more out of that motherboard. I'm mildly surprised you got 3.6. That chipset has had it's problems. Especially on the EVGA boards!

Russ

rubixcube

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23. September 2008 @ 00:09

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OK SPP is 1.45v and the vcore is actually at 1.525v but the bios sensor was reading it as 1.48v? I'm currently running 3.78ghz. 36c at idle, but its probably about 25 room temp now. Anyone think I can go higher? Also what can I use to test stability? I had prime95 I think, but I could never actually figure out how to get it to work, it would only max out one core.

edit: Russ, just out of interest, what are your voltages at to keep yours at 3.55?

This message has been edited since posting. Last time this message was edited on 23. September 2008 @ 00:11

abuzar1

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23. September 2008 @ 00:16

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Hmm, make sure you get the latest prime95. Make sure you make it run four threads and a blend test or small ffts for max heat.

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23. September 2008 @ 00:18

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ribixcube,

Quote:
Also what can I use to test stability? I had prime95 I think, but I could never actually figure out how to get it to work, it would only max out one core.

Download a copy of Orthos. It's prime 95 for multi cores. Think of it as Prime 95 with a GUI!
http://www.techpowerup.com/downloads/385...Prime_2004.html

Russ

abuzar1

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23. September 2008 @ 00:26

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Oh right he has dual core.

Yeah, orthos should be fine then.

rubixcube

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23. September 2008 @ 00:38

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Well the highest I can possible get it to boot at is 3.78ghz, 472 FSB. Damn, I really wanted to hit that 4.0ghz mark :( oh well. Thanks for the help guys.

sammorris

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23. September 2008 @ 07:09

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4Ghz on that CPU is hard, especially on an nforce.

Afterdawn Addict // Silent PC enthusiast // PC Build advisor // LANGamer Alias:Ratmanscoop
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updated 10-Dec-13

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23. September 2008 @ 08:19

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Download a copy of Orthos. It's prime 95 for multi cores. Think of it as Prime 95 with a GUI!

Orthos used to be a good choice when testing multicore processors, but it is now more outdated than Prime95. Prime95 will now run multicore processors and it's updated it's testing procedures as well. I usually run Prime95 twice with one instance focused on short ffts.

"Please Read!!! Post your questions only in This Thread or they will go unanswered:

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23. September 2008 @ 09:38

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got a couple questions here guys. well first let me say. i bumped my tower and hit the reset button. no big deal it restarted fine, but it kept trying to restart. fans and led's came on then shut back down. it did this like 7 times in a row before i hit the power switch on the PSU. turned the PSU back on and all is fine. went back to my 3.8 OC settings nothing had changed.ran IBT max everything @10passes all fine. any ideas?

now for my question.my memory(crucial ballistix ddr2 800(pc6400)) the voltage for these sticks are 2.2v. the same sticks that are out now have been lowered to 2.0v can run them with less volts than mine.

is it OK if i try and run mine at less voltage? well let me say that different. i am running them now at 2.0v i went and changed the voltage in my bios nothing else just the voltage for the mem. will this cause stability issues? i did run IBT at max mem again but only @5 passes. it did pass ok.i have orthos running now on blend testing.its ok too. with my 3.8 OC it has my mem running @ 846mhz a slight mem oc as well. I'm running it at the 333mhz strapping 2.00b setting should i take that up to the 400mhz strapping?

heres the second question.
in my strapping for the mem. id say its like most of everyone Else's
i have 200mhz 266mhz,333mhz and 400mhz.
why is it if i set it at the 200mhz strapping it sets the mem at a higher speed than the 400mhz?

i think well i know im stable with the 3.8oc i have had it here for a couple weeks now and no issues what so ever.programs are fast shutting down and restarting is fine(other than me hitting that rest button by mistake) is there any stress test that test just the mem? other than memtest?

stopped Orthos and am running Prime95 now. self test 1024k passed.both cores

docTY where you at you memory guru you??????lol

This message has been edited since posting. Last time this message was edited on 23. September 2008 @ 09:58

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23. September 2008 @ 17:22

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Rob

Try sticking with recommended memory voltages or greater when overclocking or you will run into stability issues.

I use memory strap 266 MHz for my current overclocks along with 1066 memory. When you increase the frontside bus you are also increasing memory bandwidth which is why one lowers before upping fsb. By the time I reach the maximum desired speed the memory that I use is not slightly above it's rated speed. Once I discover the maximum that a processor will go I rarely leave it there because nothing makes a person say "Doh!" like have a 7 hour encode fail. 4 GHz is a reality with my processor but I was pushing the RAM a littel too far when I hit DDR 1155 so I lowered things a bit until I purchase a couple of wider bandwidth modules. Currently my memory is running at 1087 which is quite safe for it. I have my memory voltage at 2.10 and my vcore at 1.27 and my CPU speed is at 3915.3 Mhz. When I purchase a couple of modules over the weekend then I will crank it back to 4 GHz.

"Please Read!!! Post your questions only in This Thread or they will go unanswered:

Help with development of BD RB: Donations at: http://www.jdobbs.com/.

This message has been edited since posting. Last time this message was edited on 23. September 2008 @ 17:22

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23. September 2008 @ 17:35

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Soph
so i should put my mem volts back to 2.2v then? i understand WHY i should keep them at the rated voltage. but its not like the CPU? if you can get it to preform at a higher level with less volts its better to do so???

i know you gota way better CPU than I and better mem 1066 vs 800. am i running the wrong strapping in the 333 with mine? or should i take it down to 266mhz?

ive ran allday with it at the 2.0v on the mem i do have the MCH bumped to 1.24.
ive used dvd-rebuilder twice today and played COD4 for about 2 1/2 hrs and no problems what so ever....
thanks for the tips....id say im at my max with the CPU so the rest i need to tweak my mem now.

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23. September 2008 @ 17:51

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Quote:
so i should put my mem volts back to 2.2v then? i understand WHY i should keep them at the rated voltage. but its not like the CPU? if you can get it to preform at a higher level with less volts its better to do so???

If you can get it to run at 2.10V then leave. It really depends on how far you're pushing your memory out of spec.

Take your memory down to 266 Mhz it will allow you to increase your fsb and ergo your overclock speed more stably. One of the headaches that 1333 Mhz FSB gave us was it effectively lowered the value of our clock multiplier but by back down to 266 Mhz FSB we are effectively raising it.

"Please Read!!! Post your questions only in This Thread or they will go unanswered:

Help with development of BD RB: Donations at: http://www.jdobbs.com/.

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23. September 2008 @ 18:11

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so if i take my mem strapping down to 266mhz i can increase the fsb speed(increasing my CPU oc)and not have to worry about the mem being a issue. am i looking at that correct?

ok say im happy and content with staying at 3.8ghz (which i am)should i try and raise the mem strapping to 400 and get more out of my mem? im running at 846mhz now on the ddr2 800. on the other board i had this mem up to 912mhz stable but anything after that it wouldnt stay stable. so id say 900mhz is my limit. tbh i dont think i would gain much (thats noticable)with the 50-60mhz increase from what i have now would i?

this mobo can handle ddr2 1200 mem is it much better than 1066 and worth getting it over1066?
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227347

or these. gigabyte recomends these for my board.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220282

This message has been edited since posting. Last time this message was edited on 23. September 2008 @ 18:20

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23. September 2008 @ 18:17

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so if i take my mem strapping down to 266mhz i can increase the fsb speed(increasing my CPU oc)and not have to worry about the mem being a issue. am i looking at that correct?

If you mean less of an issue then you are correct and if you seen my benchmarks then you know that once widened it also means good memory performance.

"Please Read!!! Post your questions only in This Thread or they will go unanswered:

Help with development of BD RB: Donations at: http://www.jdobbs.com/.

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23. September 2008 @ 18:25

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so i need to hold back on the mem to get my CPU/FSB as high as i can stable then work on the Mem???ok i have done that.. im at 3.8ghz and i think the fsb is around 1600 not sure im not home to look at it. so i should work with the different strappings to get a higher rate of speed out of the mem right?

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23. September 2008 @ 18:47

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cincyrob,

Quote:
got a couple questions here guys. well first let me say. i bumped my tower and hit the reset button. no big deal it restarted fine, but it kept trying to restart. fans and led's came on then shut back down. it did this like 7 times in a row before i hit the power switch on the PSU. turned the PSU back on and all is fine. went back to my 3.8 OC settings nothing had changed.ran IBT max everything @10passes all fine. any ideas?

I think it has to do with the Active bios. Most times you can hit the reset button without issue, but it depends entirely what was running or what the computer was doing when it was reset. I've seen it in that on-off cycle a lot more times than 7. The only thing I know, that clears it every time without fail, is to turn off and un-plug the PSU for a few minutes! Spare me the arguments or comments about the switch cutting the mains! I do it that way because one time while I was working on my overclock, it hung real bad, just froze. It wouldn't shut off holding the power button down. I cut the main switch and it shut down, and it still had the same re-booting over and over problem for 20 minutes before I finally called GigaByte and the tech suggested I try pulling the plug. I've been told at various times to do the same thing by Asus and Biostar as well, and all I know is it works every time! When you put the plug back in and power up it turns on for a few seconds, turns off for a few seconds and then turns on and the computer boots up just fine. It doesn't normally even change the fsb and memory settings to the defaults! Since my method "always works", I do it that way all the time! Frankly, it's a lot easier than sitting there wasting an hour or more playing with the damn thing trying to figure out what's causing the problem! I'll bet you wasted some time trying to figure it out! I know I've turned the PSU switch off for as much as 45 minutes, only to have the same problem when I finally turned the computer on again! A lot more than the two minutes it takes to just pull the plug to begin with!

My best guess is that it's the bios reference copy, and for some reason the two bios configurations don't match and pulling the plug allows the "copy" to clear. When you power up, it comes on and then turns off because it knows it needs to make a new reference copy of the bios. When it turns back on it makes a new backup or reference copy of the bios and it boots normally from there! I could research it, but since my way always works, I really don't care about it!

Like I say, It's a guess, but considering that I know that when the computer boots up one of the first things it does is check to see that the actual bios settings and the copy match. If they don't, it re-boots and tries again, but won't post. By pulling the plug for a couple of minutes, it must force a rewrite or something It could be something as simple as a bad voltage setting for the memory, since the exact same problem occurs if your memory voltage is too low for your memory. If you are overclocked, it makes even more sense! My Dominators which are 2.1v post fine at the default 1.8v. I have a pair of XMS2s that wont, but will post using one stick instead of two!

Best Regards,
Russ

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23. September 2008 @ 18:48

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Is it something that can be achieved by someone that is somewhat computer saavy... such as myself?

Yes but if you get things right you won't have to touch your memory since you are already doing that with overclocking. As you increase your FSB you are also increasing your memory speed at the same time, but unlike your memory your front side buss increases also increase your processor speed. So if you want to get a high and stable processor speed then you want to reduce your memory to start with so that by the time it's maxed out so is your processor. When that done just leave it all alone because you are finished. Remember that bandwidth provides greater over all performance gains than latency.