Intel Cherry Picking

[Exotath]

That's all good, I understand...we all phase out here and there. Good luck!

[Bluejay0]

That's all good, I understand...we all phase out here and there. Good luck!

Thanks!

Bluejay.....AWAY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

[X1XNobleX1X]

I checked my CPU batch number today. And it says it has a stepping of D?

What does this mean?

[Emperor_Piehead]

Yeah I looked and it said C, but they didn't say what stepping C means.

[X1XNobleX1X]

Yeah I looked and it said C, but they didn't say what stepping C means.

For C they say it's a bit of both world. A and B.

Still not sure what D is. 

[Emperor_Piehead]

For C they say it's a bit of both world. A and B.

Still not sure what D is. 

ok then so it's neutral that seems odd since it runs on the hot side, but okay thanks.  :)

[X1XNobleX1X]

I'm  assuming no one knows?

[Leonard]

wait. Is there such thing as a 3570k stable at that?!

Of course, i run my z77 at 4.3 daily all day for the past 6 months. I also have 4.4Ghz, 4.5Ghz & 4.7Ghz profiles for my adobe programs.

[TechFan@ic]

I bought an FX 8320 on sale for 150$ last month, OCed it from 3.5 to 4.4Ghz on stock voltage, then decided to even under-volt it & it's still as stable as a bumble bee, 51c max temp on prime95 on stock cooler.
Buying a CPU that has been on the market for a long time almost guarantees better clocks, because the manufacturing process matures over time.

[Bluejay0]

Well guys I have made a guide that i compiled with info to the K Series Ivy Bridge. Going to use this baby soon!

[AraSarkisyan]

Time to go cherrypick a i5 @ microcenter for only 150 bucks!

[Bluejay0]

Time to go cherrypick a i5 @ microcenter for only 150 bucks!

Look for 3205C. Accoding to tests, It runs at 4.9 Ghz with 1.376V

 

Best i5 you could get!

[AraSarkisyan]

Look for 3205C. Accoding to tests, It runs at 4.9 Ghz with 1.376V

 

Best i5 you could get!

Will do! ty for info!

[Bluejay0]

Will do! ty for info!

No problem!

 

 If anyone needs info on cherry picking, Thanks to you guys especially Omid and Morfy. I have found a full guide and test results of stable clocks and volts on different batch codes! PM and I will help!

[Emperor_Piehead]

No problem!

 

 If anyone needs info on cherry picking, Thanks to you guys especially Omid and Morfy. I have found a full guide and test results of stable clocks and volts on different batch codes! PM and I will help!

sounds good I have a friend who lives near microcenter that will have a new rig by the end of the year and why not hunt for the free performance.

[Bluejay0]

sounds good I have a friend who lives near microcenter that will have a new rig by the end of the year and why not hunt for the free performance.

If needed, tell me the Batch and i can match!

[JoshM]

Can you post the link to the full guide please?

[Bluejay0]

Can you post the link to the full guide please?

Give me a second. I have it in a guide that i put into a word document

[Bluejay0]

How do i post a file?

[Emperor_Piehead]

How do i post a file?

Did you try attach file?

[Bluejay0]

Doesnt allow me to post

[Emperor_Piehead]

ok i haven't tried attaching a file like that, but it was an idea.

[SnowBob]

Give me a second. I have it in a guide that i put into a word document

Can you put it on google docs and share it? or just copy and paste it into the thread? I am curious about what you found.

[fishymamba]

From what I have experienced is that there is no direct correlation between batch numbers and performance, especially with the Ivy Bridge CPUs which do not really have the best TIM between the die and IHS. 

I was doing builds for two of my friends both with i5 3570K CPUs. I made sure to get CPUs with the closest batch numbers, I don't remember the exact numbers, but they were both pretty much the same. 

I build up both rigs, which had the exact same components(except for the case and GPUs) and proceeded to overclock both CPUs to 4.2Ghz.

 

From what I had read online I was expecting these CPUs to be very similar, but no, one required quiet a bit more voltage than the other to overclock and got quiet a bit hotter. I tried this again and again and got the same result over and over. Since then I have not really seen batch numbers as a good way of sorting out CPUs, especially with Ivy Bridge where the TIM has a lot to do with temperatures. 

 

Even with steppings, I have seen overclocks/voltage vary quiet a bit. I remember reading that someone with a stepping 9 chip got to 7Ghz with LN2, but I saw another guy with stepping 9 was getting crazy high temps when mildly overclocked, even though he was using liquid cooling.

 

Honestly, in my opinion the best way to bin CPUs is to actually get a few and test them out yourself. Which is not really that viable for most people due to the cost involved, but it might be worth the cost if you intend to be breaking world records.

And if you are planning on pushing the CPU to the limit, deliding does lower temperatures by quiet a bit(Intel does NOT warranty deliding, you can easily kill your CPU by deliding, only do it if you accept the fact that if anything goes wrong your CPU ill die.)

 

Well that is my opinion on the topic, I now some of you may disagree with this, but this is just from my own experiences.

If you are going to do any overclocking, get the Intel Performance Tuning Protection Plan, only $20 for overclocking warranty, great deal if you ask me!

Good luck!

 

-fishymamba

LTT Intel Response Squad Member

The postings on this site are my own and don't necessarily represent Intel’s positions, strategies, or opinions.

[Bluejay0]

From what I have experienced is that there is no direct correlation between batch numbers and performance, especially with the Ivy Bridge CPUs which do not really have the best TIM between the die and IHS. 

I was doing builds for two of my friends both with i5 3570K CPUs. I made sure to get CPUs with the closest batch numbers, I don't remember the exact numbers, but they were both pretty much the same. 

I build up both rigs, which had the exact same components(except for the case and GPUs) and proceeded to overclock both CPUs to 4.2Ghz.

 

From what I had read online I was expecting these CPUs to be very similar, but no, one required quiet a bit more voltage than the other to overclock and got quiet a bit hotter. I tried this again and again and got the same result over and over. Since then I have not really seen batch numbers as a good way of sorting out CPUs, especially with Ivy Bridge where the TIM has a lot to do with temperatures. 

 

Even with steppings, I have seen overclocks/voltage vary quiet a bit. I remember reading that someone with a stepping 9 chip got to 7Ghz with LN2, but I saw another guy with stepping 9 was getting crazy high temps when mildly overclocked, even though he was using liquid cooling.

 

Honestly, in my opinion the best way to bin CPUs is to actually get a few and test them out yourself. Which is not really that viable for most people due to the cost involved, but it might be worth the cost if you intend to be breaking world records.

And if you are planning on pushing the CPU to the limit, deliding does lower temperatures by quiet a bit(Intel does NOT warranty deliding, you can easily kill your CPU by deliding, only do it if you accept the fact that if anything goes wrong your CPU ill die.)

 

Well that is my opinion on the topic, I now some of you may disagree with this, but this is just from my own experiences.

If you are going to do any overclocking, get the Intel Performance Tuning Protection Plan, only $20 for overclocking warranty, great deal if you ask me!

Good luck!

 

-fishymamba

LTT Intel Response Squad Member

The postings on this site are my own and don't necessarily represent Intel’s positions, strategies, or opinions.

Nicely said Mamba, a pleasure to have you here!