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E6400 - L2 stepping versus B2 stepping

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March 12, 2007 7:58:01 PM

I just built 4 new E6400 systems: 1 with the B2 stepping and 3 with the L2 stepping. For all systems, I'm using a GA-965P-DQ6 and a Zalman CPS7700.

The B2 stepping went to 3.2 GHz on stock voltages and hummed at ~49C at full load.

The 3 L2 procs went to about 2.92 GHz at stock voltages, and woudn't go any higher without significant increases in voltage. Getting them to 3.2 GHz required a voltage increase that put them at a solid 1.39 volts.

Under load after 1 hour of Orthos, temps at stock hovered around 45C. At 2.93, they stuck it out at ~ 55C. At 3.2 GHz, the procs hold down a gruesome 75C. Anything less than 1.39 volts and the processor was unstable.

I though I just got a bad batch at first, but when the 3rd one I bought suffered the same wall, I was definately dissapointed.

Has anyone else had any experience with the new Allendales?


*edit* changed subject to something less inflammatory.
March 12, 2007 9:17:09 PM

I guess you are wrong...
I have DS3 and my E6400 B2 needs 1.45v for 3.2GHz and 1.39v for 3.0GHz to be stable.
March 12, 2007 11:09:07 PM

Quote:
I just built 4 new E6400 systems: 1 with the B2 stepping and 3 with the L2 stepping. For all systems, I'm using a GA-965P-DQ6 and a Zalman CPS7700.

The B2 stepping went to 3.2 GHz on stock voltages and hummed at ~49C at full load.

The 3 L2 procs went to about 2.92 GHz at stock voltages, and woudn't go any higher without significant increases in voltage. Getting them to 3.2 GHz required a voltage increase that put them at a solid 1.39 volts.

Under load after 1 hour of Orthos, temps at stock hovered around 45C. At 2.93, they stuck it out at ~ 55C. At 3.2 GHz, the procs hold down a gruesome 75C. Anything less than 1.39 volts and the processor was unstable.

I though I just got a bad batch at first, but when the 3rd one I bought suffered the same wall, I was definately dissapointed.

Has anyone else had any experience with the new Allendales?




it stinks? get amd to 3.2ghz with a zalman it melt your mobo!

try 1.45v


zalman cooler are garbage besides being ridiculously over priced!

my e6300 is 2.8ghz and 38c at 100% cpu - with thermalright ultra-90 -32c idle
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March 12, 2007 11:14:13 PM

Zalman has Over Priced Products, but its not exactly garbage.

I have a 7700 and it works way better then the stock HSF I got with my P4.
March 13, 2007 12:48:56 AM

sorry - ya i am very strong in my opinions and my choice of words is poor at best

a thermalright ultra-90 is $28 its much better try one

the ultra-120 will allow you water temp speeds with qx6700 - properly installed - get the bolt kit or bolt version.

good luck
March 13, 2007 2:24:49 AM

So they stink just because you can't clock them any higher than 3Ghz? Pretty useless post if you ask me
March 13, 2007 5:20:17 AM

Quote:
So they stink just because you can't clock them any higher than 3Ghz? Pretty useless post if you ask me
No, they stink because he can't OC them to more than 2.93GHz at stock voltage :roll:
March 13, 2007 12:57:01 PM

Be happy they run at stock and the companies haven't conspired to keep the chips from oc'ing at all! :twisted:
March 13, 2007 1:07:08 PM

Get an E6700
a c 471 à CPUs
March 13, 2007 1:14:20 PM

Quote:


I though I just got a bad batch at first, but when the 3rd one I bought suffered the same wall, I was definately dissapointed.




You can send a flame mail to Intel for not designing a E6400 that exceeds your overclocking expectations.
March 13, 2007 1:20:51 PM

It could also be your Mobo or BIOS.

I have the Gigabyte 965G-DS3 with the E4300.

My system runs at 3.0Ghz @ 1.28V.
My system also ran at 3.2Ghz @1.35V (did not try lower)

I did find that the F6 Bios ran more stable than the F10 Bios at the lower voltage settings. I only discovered this after updating to F10 so I reverted to F6.
March 13, 2007 1:23:07 PM

Perhaps I should've phrased my post differently.

@ gODJO, what cooler are you using?

Just to clarify, I don't expect an E6400 to hit 3.2 at stock voltages all of the time. I was impressed that the B2 hit 3.2 at stock voltages.

On the other hand, I didn't expect to have to increase the voltage by 0.8 to go from 2.93 to 3.2. Moreover, my temps went from ~45 under load to >70 under load with a small clock speed increase.

Also, the 7700cu has actually gotten pretty good reviews, which makes sense since it's a big-a.. solid-copper heatsink. It might not be the best, but I got it because it was bottom-facing and would cool my NB, PWM, and RAM. Overall, I've been really pleased with the 7700cu.

I'm sure I got lucky with the original B2, but again, I really couldn't get above 3.0 GHz without toasting my proc with L2; and I had 3 samples. I just wanted to share my experience and see how others' were doing with the new stepping; not incite a flame war....


(On a side-note, I was able to drop the multi down one and up the FSB to make sure that the rest of my system ran nicely. I went up to 420 MHz and didn't even try and push it higher).
March 13, 2007 1:23:08 PM

I'm not going to say you suck at overclocking since that wouldn't be cool, but from what I've seen, for Core 2's, B2 batches have always been better overclockers than L2. That being said, you got a decent overclock for a low binned chip. Not every Core 2 OC's to the sky. *Shrugs*
March 13, 2007 1:50:00 PM

my B2 used to heat up like crazy too. The problem was narrowed to - an uneven heatspreader.
March 13, 2007 2:13:54 PM

Asus Silent SQUARE:


March 13, 2007 2:18:27 PM

this sucks, that stinks...., how childish.

I don't see how, you can expect to get the max OC on anything without bumping the voltages up. mine is at 1.475, of course water cooled and runs happily all day at 3.6Ghz. 3.7Ghz, it complains, 3.73 becomes to unstable.

I could push the voltage higher but I'm happy where its at and from what speeds you already have at default voltages you should be to.??????
March 13, 2007 2:41:37 PM

Wow. I'm sorry I posted.

I really just wanted to see how the L2's were faring for others versus the B2's, since from the little I've seen the L2's heat up a lot more when you add voltage, and they require more voltage at lower clocks.

I guess I'm a $hitty overclocker because I posted my experience with the L2's online.


"When I add more voltage it heats up a lot more than expected"
"Your cooler sucks." (I'm using the same cooler for the B2)

"I seem to hit a consistent wall at 2.93 on all 3 chips..."
"Well you can't expect every chip to be a stellar overclocker" (Maybe it could be a wall in the new design? No: I probably know nothing about anything.)


I'll just keep it to myself next time.
March 13, 2007 2:59:47 PM

It's not so much sharing the info.

That is great.
You just need to watch out for your titles which I see you updated :>

Data is always good.

What will get loud reaction is claiming anything is very good or very bad :>
Too many fans and haters of various products.
June 13, 2010 9:45:54 AM

Hello. I for 1 THANK you for your posting! This was exactly the kind of info I was looking for. I came across a really nice Gigabyte board, and need a decent CPU for it. Thank you for sharing! I found a few of the L2s for 49 bucks. Seems like a steal to me.

:hello:  :D 
!