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E6420 Overclock Thread

so far my chip is rocking at 3.4ghz with 1.4 volts now... I know this chip could go higher... not sure i feel like wasting my time doing that though.. So far this is going to be the highest oc with the least amount of volts.
 
sremick said:
I ordered my E6420 from NewEgg on 4/30. I received batch L644G451 (pack date 4/3/07). So far I have yet to break even 3GHz although it's working a tad better than when I started. I am hearing L644s are the worst for OCing though, so I got crap luck. The rate I have to bump voltage per FSB increase is way out of proportion to most people hitting 3.2-3.4GHz with ease. I'll probably never make it to even 3.2. Seriously considering doing an RMA with Intel and try another roll of the dice... NewEgg would be easier to RMA with but seems their bin sucks at the moment.
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Yeh I too have a L644 also fro the Egg (about 3 weeks ago) , but I can hit 3100 @ stock 1.35 volts (not great , but ok). I have not really tried higher , but I can tell it will take some decent voltage to get more out of it . Seems Newegg has ALOT the L644's .
 
stereo55 said:
Yeh I too have a L644 also fro the Egg (about 3 weeks ago) , but I can hit 3100 @ stock 1.35 volts (not great , but ok). I have not really tried higher , but I can tell it will take some decent voltage to get more out of it . Seems Newegg has ALOT the L644's .
Click to expand...

You're week 44 sounds just like mine. It'll do 400x8 at stock volts, but needs 1.475(BIOS) for 425x8 and 1.55(BIOS) just to be able to boot into Windows at 450x8. I haven't Orthos'd at 1.55 since my idle temps were in the upper 50's.
 
Ordered mine.. I will let all of you know how far it can go especially after getting my E4300 to 3.4 GHz easily. I hope it run as fast as my E4300 if no faster.
 
I got one of those 44's from mwave shipped from Walnut, CA. I've been able to take it to 3.4 but I had to crank up the voltages to 1.475 and it wouldn't prime past 5 hours or so. I've taken it back down to 3.0ghz and I can run orthos all day at 1.325 and my temps dont go over 48-50 under 100% load. I think it's more so my board than the chip. This is my first Intel since my p4 Williamette and I'm impressed.
 
chino182 said:
bought my e6420 from Frys. its a batch L707A643. anyone have this batch and results to discuss? thanks
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there must be people who went out to FRYS and bought a E6420 with my batch.. need some benchmarks before i return it and wait till july
 
Still tweaking, but pretty happy with 3.2GHz at 24/7-friendly settings (see sig). Vcore reported as 1.396 in SpeedFan, SmartGuardian & CPUz under load.

Bought the e6420 from MWave on 4/20: L644G461, Pack Date: 04/03/07 shipped from City of Industry, CA
 
chino182 said:
there must be people who went out to FRYS and bought a E6420 with my batch.. need some benchmarks before i return it and wait till july
Click to expand...

Got a L707A323 myself right now so i'll let all of ya know of the results. The box is packaged on april 13th 2007, 1 day before my birthday so I hope it's a great overclocker :D
 
Got a L707A323 myself right now so i'll let all of ya know of the results. The box is packaged on april 13th 2007, 1 day before my birthday so I hope it's a great overclocker
Click to expand...

I'm curious how yours turns out.

I got the same exact model today in the mail from new egg. I'd be more concerned that the 13th of April fell on a Friday more so than it being a day before your birthday.

I should have results posted here sometime tomorrow (waiting on 1 more part).
 
ShoeLace said:
I'm curious how yours turns out.

I got the same exact model today in the mail from new egg. I'd be more concerned that the 13th of April fell on a Friday more so than it being a day before your birthday.

I should have results posted here sometime tomorrow (waiting on 1 more part).
Click to expand...

LOL, forgot about the friday 13th :p Might be a coincidence but my FireStix set decided to die after I swapped the CPU :( I've tested it in another C2D machine at work 10 mins ago and it's no go (no boot signal) so I'll borrow a cheap set of Rendition PC2-5300 to see.

RMA time for my RAM :(
 
I've OCed my 6420 to 2.4ghz but in CPU-Z it keeps showing as: 1800 MHz. Am I missing something in the BIOS?????
 
So I got an L709 stepping E6420 today from Newegg ... Google results reveal that it's a good week for E6600s.

:D I'm pumped, can't wait to OC this thing.
 
JaYp146 said:
So I got an L709 stepping E6420 today from Newegg ... Google results reveal that it's a good week for E6600s.

:D I'm pumped, can't wait to OC this thing.
Click to expand...

Tell me how you do man. I got a L709A514 from newegg yesterday. So far 3.2 stable at 1.475vcore on a P5B-E. Ive had a hard time booting into windows anything higher than 3.2.
I can boot up at 450FSB with 1.58 vcore, but windows wont load. I want to get it over 3.5 stable.
 
mooseboy84 said:
Tell me how you do man. I got a L709A514 from newegg yesterday. So far 3.2 stable at 1.475vcore on a P5B-E. Ive had a hard time booting into windows anything higher than 3.2.
I can boot up at 450FSB with 1.58 vcore, but windows wont load. I want to get it over 3.5 stable.
Click to expand...

Ouch, thats a lot of vcore to just get stable at 3.2. It's gonna be interesting to see how good or bad the week 9's(and for that matter the week 7's) are at OC'ing.
 
Wow, so this is completely off topic, but 10,000 views! This was my first thread. Just wish I could get the noobie label off my name. I'm only a noob on these forums. You can all be sure to see me around here for a while.
 
Terc Your sig is fucking ridiculously huge not to mention more than double the amount of lines the rules allow.

Hardforum Rules said:
(22) No active links, graphics, code, profanity or advertising allowed in the SIGNATURE. Sig line is limited to 10 lines total as viewed @ 800 x 600 resolution or no more that 15 words per line.
Click to expand...
 
mooseboy84 said:
Tell me how you do man. I got a L709A514 from newegg yesterday. So far 3.2 stable at 1.475vcore on a P5B-E. Ive had a hard time booting into windows anything higher than 3.2.
I can boot up at 450FSB with 1.58 vcore, but windows wont load. I want to get it over 3.5 stable.
Click to expand...

CPU-Z reads the following on my L709 chip:
@ ~1.35 V , 380Mhz x 8 = 3040 Mhz ... rated FSB is 1520 Mhz

TAT under Orthos, full load (1 hour) = ~50C / ~47C

Stable so far. I'm having trouble setting RAM timings (Memset isn't working properly), but everything's rock solid for now. Will update post-LAN party.
 
I had to bump my vcore up to 1.5. For some reason games started crashing on me. So far so good at 3.2ghz. I need to run some stress test though.
 
Batch: L709A530 packed on 5/01/07, bought from Newegg.

I just got my processor yesterday and it's been clocking great for me. :D I have a P5B Deluxe Wifi with 1101 drivers, G.SKILL 2gb 6400 RAM, Ultra-120 Extreme w/ AS5.

I had trouble installing the Ultra-120 Extreme because my fan was closed-hole which meant to get it on I had to use steel wiring. It's on there REAL good now :D. Problem was, the fan blocked two of the screws from the top so I couldn't use a screwdriver, I literally spent 15-20 minutes becoming a contortionist.. Near the end I couldn't really feel my thumb anymore so I finally just went all in at it and it turned out good. Definitely a stressful event but it felt really good when it finally went in. I think I might have messed up my thermal grease from all that moving around but it ended up okay enough for me to not want to go through the trouble of remounting it.

Also, my BIOS was and still is reporting temperatures 10C higher than Speedfan/TAT/anything else I use.

I did 400x8 to begin with. 1.3 volts was all it needed and it was stable over night on double Orthos. CPU-Z and Speedfan actually showed around 1.26v, temperatures were decent.

8hourstable3200.jpg


Next I wanted to test the FSB to see how that would go. I tried 475x7 at 4-4-4-12 1:1 with 1.3125 vcore and 2.05 mem and it worked perfectly. It was stable for over an hour and I didn't bother testing it more.

Knowing my RAM could handle 475, I went back to the 8x multiplier. 430x8 at 1.4v = 3440mhz, was stable as a rock (I know this pic is only 10 minute Orthos, I went longer and didn't take another, sorry).

oc3440.gif


I went to 438x8 but needed 1.45v in order for Orthos not to error within 3 minutes or so. (3500mhz). (no pic, sorry).

Then I went to 450x8 (3600mhz). Tried 1.475v but that didn't stay very long, so went to 1.5v and it ended up lasting around 3 hours before something went wrong (I wasn't home, but when I came back my computer had restarted)

oc3600.gif


With the relatively low temperatures I'm getting I'm sure I could hit much higher voltages and get a lot higher clocks just for shits and giggles, but right now I just want to take advantage of my new computer and play some LOTRO/CSS :D

I'm now running at 3.4ghz, 425x8 on 1.4v, RAM at 1:1 4-4-4-12 w/ 2v. It's lasted a few hours in games and also a few hours on Orthos. I'm going to give my computer a break tonight but I'll go through a double Orthos overnight in a day or two just to make sure it's 100% stable.

Future plans? I'm not too sure what an increased FSB does performance-wise, but since I know mine can go at least 475fsb I might try to get 3.4/3.5ghz on a lower multiplier to speed up my RAM. It's running awesome right now though so no rush.

Sorry if that dragged on, I'm new so I haven't learned the skill of typing only what is necessary. I'd recommend this chip to anyone.

Also, I notice in some posts people just have little thumbnails for their pictures.. is that automatic?

Edit: For all of these temperatures, note that my room is really hot. Don't know the exact temperatures but it was uncomfortably hot since I was building and moving around etc.
 
Nice overclocks deadsquerl. Temps are great too. The temp reading in the bios is off on all these boards. I don't have the nerve to take mine that high.:(
 
deadsquerl, that was a nice overview of how these processors seem to be doing. I have to say, you seem to have picked up a very nice chip, I thought that mine was doing well, but 3.6Ghz takes just a little more voltage for me to stay stable. Just guessing from the volts others need for those speeds, I think you might be able to top out around 3650-3700 stable. It would require a lot of voltage though. Somewhere in the 1.55-1.6v range.
 
I'll have to read and look into it more, but is there anything necessarily BAD about running voltage that high as long as temps are down? And do you think I should pump up the FSB and use a multiplier? That should speed up everything I think. (again, I have to read!)
 
What is the safe limit to run the vcore at on these chips? 1.5? I am at 3.4Ghz at 1.38 vcore and idle of 32C. I have not touched my RAM timings yet. Just running RAM at 2volts.
 
Well, I finally drained my water cooling loop, took everything out of my system, installed my chipset cooling and new MOSFET cooler, and while I was at it, re-applied the paste on my cpu block. So... I now have my processor week and code.

I've been running a L647G476.

I plan to spend some time working on a new overclock for the stable thread, I think I've given up on booting at 4Ghz, the best I can manage has been 3936Mhz. That didn't make it into Windows though.
 
Terc said:
Well, I finally drained my water cooling loop, took everything out of my system, installed my chipset cooling and new MOSFET cooler, and while I was at it, re-applied the paste on my cpu block. So... I now have my processor week and code.

I've been running a L647G476.

I plan to spend some time working on a new overclock for the stable thread, I think I've given up on booting at 4Ghz, the best I can manage has been 3936Mhz. That didn't make it into Windows though.
Click to expand...


3936Mhz is pretty damn outstanding as far as I'm concerned.
I have a wall on my Mobo at 441FSB, so the best I can possibly get (x8) is 3528Mhz.
The closest I've come to that is 7x441Mhz = 3087 and then 8 x 437.5Mhz = 3500.

I'm Windows stable and can run SuperPi and surf the web, but it's only Prime / Orthos stable for 5 minutes or less at that speed.

I actually had 3480Mhz CPU / 1218 RAM stable in Orthos for 3 hours earlier today, and then it bit the dust on me.

So.....like I said.....

3936Mhz is pretty damn outstanding as far as I'm concerned.

I need H2O. :p
.
 
I think I've found my new limit.

With the new cooling, looks like I'm going to be stable around 3640Mhz. I'm only Orthos stable for 5 minutes so far, but I managed to run Orthos for a couple minutes at 465x8 = 3720Mhz. Orthos gave out on me at 458x8 = 3664Mhz after around half an hour. I'm hoping to squeak by one more King of the Hill on the E6420 fastest stable OC. Current best is 3624Mhz, so I think I'm in reach.
 
Terc said:
I think I've found my new limit.

With the new cooling, looks like I'm going to be stable around 3640Mhz. I'm only Orthos stable for 5 minutes so far, but I managed to run Orthos for a couple minutes at 465x8 = 3720Mhz. Orthos gave out on me at 458x8 = 3664Mhz after around half an hour. I'm hoping to squeak by one more King of the Hill on the E6420 fastest stable OC. Current best is 3624Mhz, so I think I'm in reach.
Click to expand...

Sadly, I cannot make a run at the crown for the E6420's.

Fortunately, I console myself by knowing that my RAM speed owns everyone on the entire C2D list. :D
 
Damn, temps sure do take off on this chip with a little voltage boost and an extra 150Mhz.

I'm under full load right now seeing temps as high as 67C on cpu. (cores are only 56c though) I'd imagine I'll do better once my new paste cures, I may have to postpone my retake of the throne.

At the speed and volts in my sig, I could run at a constant 48C no matter what my cpu load was (using speedfan and my water rig)
 
i have noticed that the week 47 chips are good as i have one as well.
 
chino182 said:
how can you tell what week it was made?
Click to expand...

Here's my chip:

Picture001.jpg


This chip is a week 51 chip.
It is designated where you see L651. (as in, 51st week of 2006)
Next up would be the "lot", or "batch" or "step" code as it is referred to.

Mine would be B325.
Technically, the "Step" code is something completely different, but people sometimes call it that by mistake.
If you're curious, the step for my E6420 is the SLA4T marking.

Anyways, back to the "batch / lot" code topic.

What this code does is it isolates your chip even further to determine which specific batch it came from.
For instance, say that there were 50 different batches of Silicon used to produce all of the E6420 chips in the 51st week of 2006. Maybe you have a good week, but your batch is garbage.
Usually, the week it was made is a good enough indicator of whether or not the chip will perform, but as with anything.....YMMV.

Hope I didn't ramble on too much there. :p
 
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