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How are the latest Haswell CPUs? Share some infos about your batch code!(e.g Batch # L335xxxx~)

post #1 of 8
Thread Starter 
It's commonly perceived that the CPUs made in the very first phase of production often yield best results regarding overclocking. So far I've heard good news on its overclocking capabilities, as I have seen numerous CPUs succeed in reaching 4.5 ghz at ~1.15v. Nonetheless, I believe it would be far more accurate to have precise statistics regarding the latest models. It'd be nice if many of you could share your experience?
post #2 of 8
Thread Starter 
***Your batch codes are shown on the metal side of the cpu and on the box!**

To make the job easier, I'll indicate the number of samples next to the module batch #.
I'll make a normal distribution graph when we have sufficient amount of modules [X~N(0,1)]

We Currently have:

L313XXXX (1 sample(s)) 4.3ghz@1.28v
L320XXXX (1 sample(s)) 4.3ghz@1.25v
L323XXXX (1 sample(s)) 4.2ghz@1.26v
L334XXXX (1 sample(s)) 4.5ghz@1.21v
Edited by kyrix1st - 2/18/14 at 6:09am
post #3 of 8
Hi, so I´ll start.

I have my second i7 4770 already, I solt the first one because it had aweful OC capabilities could barely hit 4.3 with 1.28v and no memory oc was possible. That was a very early one, purchased in June.
My second one is pretty awesome I think.

#1:
Batch: L313BXXX
Purchased: June 2013
Best OC: 4.3 GZ @ 1.28v

#2:
Batch: 3334CXXX
Purchased: Feb 2014
Best OC: 4.5 @1.21v more is definitly possible with lower cache clock and better cooling, Got it semi stable at 4.6 with 1.25, passed ITB 20 runs but crashed under OCCT:CPU
Edited by acanom - 3/17/14 at 3:13am
post #4 of 8
The bacth numbers mean such little these days...to give you an idea I and some of my friends have gone through approx. 15 or 16 4770k and a couple 4670k's several from the same batches etc and all of them vary widly...we had only two 4770k that we could get 5ghz stable below 1.45v and one that could 4.9ghz at 1.39v but couldn't do 5ghz if her life depended on it...lol

Also to note having gamed and ran 5ghz for awhile vs something like 4.4-4.5ghz average oc the difference is negligible o say the least and going beyond 4.5 24/7 is simply fo eepen and benchmarks thumb.gif

also to note all the chips allowed for high memory speeds with light to medium SA/IO voltage required....keep in mind memory overclock also depends on the memory itself and not solely on the cihp.
Haswell Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k 4.9 MSI Mpower z87 Nvidia GTX 770 -SLI- Gskill 8GB 2400Mhz 
Hard DriveHard DriveOptical DriveCooling
2x Samsung 840 Pro SSD's 2x Seagate 2TB LG Blue Ray Custom loop 360/240 Rad EK Block 
OSMonitorKeyboardPower
Win 8.1 64b Qnix 2560x1440 96hz Corsair k70 Corsair AX860 
CaseMouseMouse PadAudio
Corsair Air 540 Razer Deathadder Razer Ironclad Creative X-FI - Logitech THX 2.1 
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Haswell Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k 4.9 MSI Mpower z87 Nvidia GTX 770 -SLI- Gskill 8GB 2400Mhz 
Hard DriveHard DriveOptical DriveCooling
2x Samsung 840 Pro SSD's 2x Seagate 2TB LG Blue Ray Custom loop 360/240 Rad EK Block 
OSMonitorKeyboardPower
Win 8.1 64b Qnix 2560x1440 96hz Corsair k70 Corsair AX860 
CaseMouseMouse PadAudio
Corsair Air 540 Razer Deathadder Razer Ironclad Creative X-FI - Logitech THX 2.1 
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post #5 of 8
Thread Starter 
My experience

I do not remember the exact batch code, but I've had two CPUs so far.

All voltages indicated below are my input values (VID) not the actual Vcore voltage.

i7-4770k #1
Batch code: L323XXXX (Indicates that the module was produced in 2013, week of 23rd)
4.2ghz at 1.26v (daily use at 1.27v)

i7-4770k #2
Batch code:L320XXXX(Indicates that the module was produced in 2013, week of 20th)
post #6 of 8
Thread Starter 
I understand that it does vary wildly in some occasions, so I'm looking to get about 300 samples at minimum to see the correlation! I'd have to get more info on memory overclocking since I haven't done much myself, so the post is limited to CPU overclocking capabilities at the moment.
post #7 of 8
Quote:
Originally Posted by kyrix1st View Post

I understand that it does vary wildly in some occasions, so I'm looking to get about 300 samples at minimum to see the correlation! I'd have to get more info on memory overclocking since I haven't done much myself, so the post is limited to CPU overclocking capabilities at the moment.

to be totally honest man...your prly not gonna get 300 numbers unless you dig fort them...like I said already batch numbers don't mean much anymore....sure you get chips that are similar in the same batches etc...but its not like it was years ago...that's why you don't see people making batch list etc anymore...in the haswell thread darkwizzie has a spreadsheet with overclocks on it etc that has some batch numbers....but not 300...

Also there are several other factors involved esp with haswell chips such as people not overclocking them coredcctly...which is still going on and folks wonder why they can get past 4.3 or so.
Haswell Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k 4.9 MSI Mpower z87 Nvidia GTX 770 -SLI- Gskill 8GB 2400Mhz 
Hard DriveHard DriveOptical DriveCooling
2x Samsung 840 Pro SSD's 2x Seagate 2TB LG Blue Ray Custom loop 360/240 Rad EK Block 
OSMonitorKeyboardPower
Win 8.1 64b Qnix 2560x1440 96hz Corsair k70 Corsair AX860 
CaseMouseMouse PadAudio
Corsair Air 540 Razer Deathadder Razer Ironclad Creative X-FI - Logitech THX 2.1 
  hide details  
Reply
Haswell Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k 4.9 MSI Mpower z87 Nvidia GTX 770 -SLI- Gskill 8GB 2400Mhz 
Hard DriveHard DriveOptical DriveCooling
2x Samsung 840 Pro SSD's 2x Seagate 2TB LG Blue Ray Custom loop 360/240 Rad EK Block 
OSMonitorKeyboardPower
Win 8.1 64b Qnix 2560x1440 96hz Corsair k70 Corsair AX860 
CaseMouseMouse PadAudio
Corsair Air 540 Razer Deathadder Razer Ironclad Creative X-FI - Logitech THX 2.1 
  hide details  
Reply
post #8 of 8
Quote:
Originally Posted by acanom View Post

Hi, so I´ll start.

I have my second i7 4770 already, I solt the first one because it had aweful OC capabilities could barely hit 4.3 with 1.28v and no memory oc was possible. That was a very early one, purchased in June.
My second one is pretty awesome I think.

#1:
Batch: L313XXXX
Purchased: June 2013
Best OC: 4.3 GZ @ 1.28v

#2:
Batch: 3334XXXX
Purchased: Feb 2014
Best OC: 4.5 @1.21v more is definitly possible with lower cache clock and better cooling, Got it semi stable at 4.6 with 1.25, passed ITB 20 runs but crashed under OCCT:CPU
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  • How are the latest Haswell CPUs? Share some infos about your batch code!(e.g Batch # L335xxxx~)
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