Q batch C2D e6400

[vladrassvet]

Yeah, I also got batch Q652A044, pack date 02/21/07. It's still in the box unopened, so I wonder if I should open it or return it back and go hit the shops to find the L stepping. That's probably better, eh?

 

[vladrassvet]

Okay, did a bit of research on the processor which I got and found these pages:

For B2 stepping - http://processorfinder.intel.com/details.aspx?sSpec=SL9S9
For L2 stepping - http://processorfinder.intel.com/details.aspx?sSpec=SL9T9

Written differences between two:

B2 Core Voltage: 0.850V-1.3525V.....L2 Core Voltage: 1.225V-1.325V
B2: Has Tdiode enabled......L2: Doesn't have Tdiode enabled.
B2: Has Extended Halt (C1E) power of 22W.....L2: Has Extended Halt (C1E) power of 12W

P.S. I have got Buffalo Firestix PC6400 which I ordered from the US, and I want to overclock those, 'cause that's what is paid for. Would the L batch with B2 stepping perform worse at high FSB speeds than the Q batch with L2 stepping? I kinda tend to think so... Arrrgh! Any ideas?

 

[RayDaddy]

running mine at 3.5 at 1.36v and hanging in there good. no idea of batch or anything never checked will when my new radiator comes in.

 

[unclewebb]

The 652 in Q652xxxx refers to the manufacturing date. 52nd week of 2006. Some 2007 production is already in retail. ie. Q701xxxx and up.

Q is the new plant. These processors show up as Revision L2 in CPU-z.

I think they switched over to the new plant around the 40th week of 2006 so it's going to be real tough finding an old Revision B2 at retail that effortlessly overclock like monsters.
The B2 processors start with the letter L which stands for the plant they were made in.

Anyone with a processor built around the 40th week should post whether it is a B2 or L2 revision so we can see when the official switch date was.

Here's what a B2 revision can do without too much effort.

 

[vladrassvet]

running mine at 3.5 at 1.36v and hanging in there good. no idea of batch or anything never checked will when my new radiator comes in.

Which stepping does CPU-Z show? That's pretty impressive for an oc, I plan to do only something like 3.2-3.3.

 

[vladrassvet]

The 652 in Q652xxxx refers to the manufacturing date. 52nd week of 2006. Some 2007 production is already in retail. ie. Q701xxxx and up.

Q is the new plant. These processors show up as Revision L2 in CPU-z.

I think they switched over to the new plant around the 40th week of 2006 so it's going to be real tough finding an old Revision B2 at retail that effortlessly overclock like monsters.
The B2 processors start with the letter L which stands for the plant they were made in.

Anyone with a processor built around the 40th week should post whether it is a B2 or L2 revision so we can see when the official switch date was.

Here's what a B2 revision can do without too much effort.

Thanks for clearing things up. I am going to hit downtown Toronto tomorrow, scavenging through old and new chinese/arab shops that are there. Maybe I'll fish something out. Maybe not. At least I have a range to look through - sometime from L620 up to L640, right? Sweet, if I find any.

P.S. Nice pic though. I won't run it up that high, but leaving extra room until the potential boundary is definitely gonna prolong the life of the CPU, that's why I am so keen on getting the B2 stepping, so I won't have to push the L2 as much.

 

[unclewebb]

My E6400 is Revision B2 and has a date code of 633.

In the [H] OC database there are very few E6300 / E6400 processors in there after this week and then the E4300 processors show up at week 40 of 2006.

I might have got one of the last of the good ones!

Edit: That benchy is with the Intel OEM heatsink and fan. Wonder what it would do if I spent some money on a decent cooler.

 

[cerebrex]

E6600 L640 batch - 40th week, B2

The 652 in Q652xxxx refers to the manufacturing date. 52nd week of 2006. Some 2007 production is already in retail. ie. Q701xxxx and up.

Q is the new plant. These processors show up as Revision L2 in CPU-z.

I think they switched over to the new plant around the 40th week of 2006 so it's going to be real tough finding an old Revision B2 at retail that effortlessly overclock like monsters.
The B2 processors start with the letter L which stands for the plant they were made in.

Anyone with a processor built around the 40th week should post whether it is a B2 or L2 revision so we can see when the official switch date was.

Here's what a B2 revision can do without too much effort.

 

[TehQuick]

E6600 L640 batch - 40th week, B2

e6600 doesn't matter, only e6300 and 6400 with 2mb cache can be Q batch L2 stepping Allendale core

 

[unclewebb]

All E6600 and E6700 cpus have always been built on the Conroe core and CPUz reports them as Revision B2.

The good news is that the new E6320 / E6420 with 4 MB of cache will be back on the same Revision B2 Conroe core.

 

[Flak_Monkey]

That sucks, why would intel pull something like this.

If I wanted an allendale, I'd buy an allendale. Now all the 6400's suck...grr..


I wonder now if there will be any difference between these new Q 6400's and the 4300's besides the multiplier.

 

[TheRapture]

That sucks, why would intel pull something like this.

If I wanted an allendale, I'd buy an allendale. Now all the 6400's suck...grr..
.

The E6400 Allendales do not "suck"....getting 3200mhz+ from a 2.13ghz cpu most definitely does not "suck". That's a 1070mhz overclock! A 50% over clock sucks? Hardly...you act as if overclocking is a guarantee.....sheesh.

Sure alot of whiners around here....

 

[Flak_Monkey]

The E6400 Allendales do not "suck"....getting 3200mhz+ from a 2.13ghz cpu most definitely does not "suck". That's a 1070mhz overclock! A 50% over clock sucks? Hardly...you act as if overclocking is a guarantee.....sheesh.

Sure alot of whiners around here....

Well most of that post was made in jest, guess I'll just need more smilies next time.

I know getting a 1GHz overclock is nice, That's what I have on my Opteron 165 at the moment.

I'm just saying that it's stupid to start making the 6 series allendales when the 4300's were designed for that purpose anyway. It's like they're trying to slip them in under the radar and make more money on unsuspecting people who are buying an e6400 expecting a better overclock than the e4300. See what I'm saying?

 

[luihed]

Which is why Ive been saying that an E4300 right now is better than both 6400 and 6300 even at the same price, thats if you dont need VT..... I look at it as an E6600 allendale

Im picking up an e4300 next week just to test it out, I made a wager with a friend and Im gonna prove that these 4300 are just as good as any of the allendale 64/6300...... Still need to find the batch# im looking for..... I hope I get a good clocker so I can sell it without losing too much money

 

[unclewebb]

Just add some decent memory and a decent cooler to that E4300 and there's no reason why it can't scream like all the other Conroe chips.

These guys didn't have too much trouble.
http://www.nordichardware.com/Reviews/?page=1&skrivelse=500

 

[Flak_Monkey]

Just add some decent memory and a decent cooler to that E4300 and there's no reason why it can't scream like all the other Conroe chips.

These guys didn't have too much trouble.
http://www.nordichardware.com/Reviews/?page=1&skrivelse=500

Yeah I remember reading that article a day or so ago. It's good they got it all the way up to 3.6GHz on air with 1.6 volts. I don't think I'd have to go that high on watercooling though.

Anyhow, one other thing I wanted to bring up was the FSB difference between the allendale CPU's and the Conroes.

The allendales have an 800MHz FSB stock, the conroes have a 1066MHz FSB stock. This is certainly going to make a difference in speed when the two are overclocked. That theory is also brought up over at xtremesystems where the allendale is shown to be slower clock for clock than a conroe chip.

Now however, if the 6300 and 6400 are going to be allendales as well, one might as well buy the 4300 and go with the high multiplier. For if the 6300 and 6400 are becoming allendales, won't they come with the same 800MHz FSB? They couldn't be allendales and have a 1066 FSB, cause then they wouldn't be considered allendales....

Think I said allendale enough up there?

 

[TheRapture]

Anyhow, one other thing I wanted to bring up was the FSB difference between the allendale CPU's and the Conroes.

The allendales have an 800MHz FSB stock, the conroes have a 1066MHz FSB stock. This is certainly going to make a difference in speed when the two are overclocked.

My cpu is identified as an allendale core, and it is 1066fsb stock (266.6 x 4) but I am overclocked at 400 x 4 = 1600fsb at 1.39vcore idle and 1.37vcore reported under extreme load.

So not all allendales are 800fsb...and an allendale IS a conroe, albeit with only 2mb cache instead of 4mb.

 

[CpuMan]

The allendales have an 800MHz FSB stock, the conroes have a 1066MHz FSB stock. This is certainly going to make a difference in speed when the two are overclocked. That theory is also brought up over at xtremesystems where the allendale is shown to be slower clock for clock than a conroe chip.

The first 6300 and 6400 were Conroe's with 2meg of cache disabled, they had the B1 and then the B2 steppings. The latter 6300 and 6400 are infact Allendales with 2meg of cache from the ground up, they have L2 steppings. There are other little differences you can see in this link,
http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors

The first B2 stepping are no faster clock for clock the the L2 stepping versions, but the B2 steppings on average overclocked a bit better then the L2 versions.

I have a L2 version of the 6400 and am very happy with it, but I was not wanting to oc on the bleeding edge anyway. The only advantage I can see of the B2 over the L2 is if you are wanting to get to 3.3GHz and beyond, you'll have a better chance at reasonable voltages to get there with a B2 version.

 

[TheRapture]

I have a L2 version of the 6400 and am very happy with it, but I was not wanting to oc on the bleeding edge anyway. .

Same here, L2, and running at 402x8 for a nice 3216mhz speed....I may water cool this rig for fun soon....depends on my next bonus check!

 

[Flak_Monkey]

The first 6300 and 6400 were Conroe's with 2meg of cache disabled, they had the B1 and then the B2 steppings. The latter 6300 and 6400 are infact Allendales with 2meg of cache from the ground up, they have L2 steppings. There are other little differences you can see in this link,
http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors

The first B2 stepping are no faster clock for clock the the L2 stepping versions, but the B2 steppings on average overclocked a bit better then the L2 versions.

I have a L2 version of the 6400 and am very happy with it, but I was not wanting to oc on the bleeding edge anyway. The only advantage I can see of the B2 over the L2 is if you are wanting to get to 3.3GHz and beyond, you'll have a better chance at reasonable voltages to get there with a B2 version.

Well thank you for that enlightening post.

So it seems the new allendale 6300 and 6400 procs are build from scratch with 2MB's of L2 just like the 4300. I suppose it is possible to get over 3.3GHz but just requires more volts than a normal conroe chip would.

In that case, the 4300 would put my watercooling to the test. There's only one watercooled 4300 entry in the OC database at the moment, maybe I should change that

Thanks for that wiki link though, it helped.

Though I still wonder if the 6300 and 6400 allendales would have any advantage over the 4300 because of their higher FSB by default... I know with the conroe 6400 vs. the 4300 it was clear cut to get the conroe, but now since they're all allendales one should pick the chip based on the multiplier and the rest of the parts one is getting.

 

[CpuMan]

Though I still wonder if the 6300 and 6400 allendales would have any advantage over the 4300 because of their higher FSB by default... I know with the conroe 6400 vs. the 4300 it was clear cut to get the conroe, but now since they're all allendales one should pick the chip based on the multiplier and the rest of the parts one is getting.

The e4300 is basically a 6300 L2, with the chip coded for a stock 200mhz FSB and VT disabled. It will oc very well with the 9X multiplier. You should be able to reach 3.0GHz with your setup maybe more.

The e4300 would be a good choice to test out your water cooling setup IMO. If your set on a Conroe for a good price, wait a few weeks for the 6320 and the 6420 to arrive. They will have the B2 Conroe steppings with 4 meg of cache.

 

[luihed]

Now however, if the 6300 and 6400 are going to be allendales as well, one might as well buy the 4300 and go with the high multiplier. For if the 6300 and 6400 are becoming allendales, won't they come with the same 800MHz FSB? They couldn't be allendales and have a 1066 FSB, cause then they wouldn't be considered allendales....

Think I said allendale enough up there?

Allendale is the core and it can be set ( by intel ) to run either 800fsb (E4300) or 1066fsb (E6300)..... If you have an E4300, you can do a mod so when you boot at auto, it will boot at 1066fsb and not 800fsb, Not sure what multi it will use though...... When I get my E4300 Ill find out......

 

[vladrassvet]

Yippee!!! I managed to find a L629B642 batch of E6400! It was the last processor on the block (I went around 10 shops or so - Qs are now everywhere, although I saw L640 once). Thanks to this thread, some determination and to God, my rig may be able to take better heights with less volts and less heat therefore. I haven't powered it up yet, 'cause the P5B board is currently having issues with 2.1v memory (just need to flash to the latest bios, I guess, then change the timings and voltage manually).

Thanks, everyone! Good luck finding the right chips, whoever is looking for them right now...

P.S. Yeah, I know that I couldn't wait a few weeks until the 6320/6420 come out, but that is only because there will be the next chip coming out in a few months time, and then the next one in a couple of weeks, and some more later on, etc... Buy now, enjoy now, as someone else here said!