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Posted
Cache voltage is way too high, for that frequency 1.25 should be enough bro, be careful! However liquid temperatures?

 

pretty sure dumo knows what he is doing ;) besides when you push imc to limit you need to lower cache and cpu speed ;)

 

pretty interested to see you cpu cache speed,i've noticed that good clocking cpu's reach high cache speed too while dumb cpu suck in every way(including cache...)...

Posted
Ciruzzo have u tried running 4800 uncore at less than 1.4 :P

 

Yep, Linx solid @ 4.8GHz with 1.25v on cache voltage ;)

 

pretty sure dumo knows what he is doing ;) besides when you push imc to limit you need to lower cache and cpu speed ;)

 

pretty interested to see you cpu cache speed,i've noticed that good clocking cpu's reach high cache speed too while dumb cpu suck in every way(including cache...)...

well, at that frequency, it's useless heat generated, it's just too much :\

Posted

So 4.6Ghz with 1.16 Volts is good, Hyper pi and Linx stable?

 

4.8Ghz even till 1.22V is not possible though, working on it still. A decent chip would require how much for 5Ghz 4c/8t?

Posted

Personally, I don't care how little voltage a chip needs to do 4.6GHz. UNLESS....a person wants 4.6GHz for 24/7. Has anyone found a good LN2 chip that won't do 5Ghz on air?

 

I wonder if we should consider a second binning point: CPU-Z or boot MHz at 1.40v (same idea as Netburst binning)

Posted

interesting facts,my cpu is not very good at primie at low freq,does 4.5 with 1.21,4.6 with 1.26,but as soon as i disable HT i can boot 5 ghz wxp with 1.31 and run 32M and 2001 at 1.35.5100 with 1.41,5200 with 1.46(it gets too hot).All on air,will take it cold soon.

Posted

 

L310B479 1.2625V 5.0GHz on Air

 

hello HiVizMan ;)

 

you did somthing special (i dont knwo the haswell oc.. i understand its different compare to ivy) about options in the bios to have your L310B479 runing at 5ghz ? its stable withe burn test ? (hope yes because i have the same) what motherboard you use please ?

 

i hope tomorrow i have maximus VI gene..

  • Crew
Posted

Im confused at these cpu's, tested 7 from the same batch,

 

ALL CB was -127, it seems to be the norm, i had 1.38 5ghz / 1.4 5ghz / 1.42 5ghz / and bunch of non-5ghz.

 

The scaling from best to worst was according to 5GHZ on air clocks, EXCEPT my 1.25v 5ghz cpu sucked on ln2 and had -100 cb. im wondering if thats the reason HKPEC sell so many 1.25v 5ghz cpu's for air users, i wonder if there is a threshold or relationship to low v chips and warm CB's. i dont really know what to think cause im sad i found a good cpu that sucked ln2 :P.

 

from my experience, L311B512 was nice, 5.95 cinebench, and probly 6 if you push. L310B488 all were nice, my nicest one 6ghz cinebench and 6.275 32m, but still not close to 8Packs 6.55 32m chip, wonder what it needed for 5ghz.

 

WHERE ARE YOU COSTA RICA

Posted

Vivi i have 1.2 5g with -135 cb

All cpus i tested are lower than 1.30 and all cb around -125/-135 only one -165 but bad clocker

But all cpus ES and all 6s batch 48 so very close to retail.

  • Crew
Posted
Vivi i have 1.2 5g with -135 cb

All cpus i tested are lower than 1.30 and all cb around -125/-135 only one -165 but bad clocker

But all cpus ES and all 6s batch 48 so very close to retail.

 

aah ok so i just had VERY good bad luck haha.

 

Yea my 1.4 CPU's reach 6.4 almost so i guess it makes sense that some of the 1.25v guys do 6.6 like 8 Pack's. Just a matter of time till we find them

Posted

Hi I'm new here. My CPU is like crap I guess. My Batch is L313B846.

 

With noctua NH-D14 I'm not able to run 4,5Ghz... always BOSD 1.300V, 1.350, 1.375, and also 1.400. So I decided to send my CPU back and I will look for L310B488 or L310B4xx. I read this topic and it looks like the best BATCH. Is that possible to buy somewhere this BATCH? Thanks..

Posted (edited)

the 4770K ES

4.7 GHz cinebench and 3d11 physics stable with 1.20v on air 4C/8T

4.8 GHz cinebench and 3d11 physics stable with 1.256v on air 4C/8T

 

5Ghz on air not possible

 

Same cpu on SS (-20C)

5 GHz spi32m with 1.24v 4c/8t

5.1 GHz spi32m with 1.27v 4c/8t

 

wprime 32m 4c/8t with 1.28v but cpu's temp reached +17C so I didnt test more :D

 

next step: cascade

Edited by FireKillerGR
Posted

CPU: i7 4770K

 

Batch: 3312B707, so yes, it's Costa Rica.

 

How it overclock?

4.6GHz 1.4V Cinebench on air (Prolimatech Megahalems Black + Scythe Ultra Kaze 133CFM)

4.475GHz 1.3V XTU with peak of 88C.

 

My Conclusion:

It's an crap chip. :D

  • Crew
Posted
CPU: i7 4770K

 

Batch: 3312B707, so yes, it's Costa Rica.

 

How it overclock?

4.6GHz 1.4V Cinebench on air (Prolimatech Megahalems Black + Scythe Ultra Kaze 133CFM)

4.475GHz 1.3V XTU with peak of 88C.

 

My Conclusion:

It's an crap chip. :D

 

nooo its obviously a fake costa rica bro made in Malaysia factory i will wait for the real costa rica

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