Different TDP on 3770K?

[rouvio]

Heya,

This is the 3770K I purchased at Microcenter on launch day.

Batch#: L206B468
made in (L): Malay
week number: 06

TDP on box - 95W









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here is a new 3770K, purchased TODAY from MC (same branch), and the guy told me they got this shipment, literally, few hours before I purchased it.

Batch#: 3214C301
made in (3): Costa Rica
week number: 14

TDP on box - 77W







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a dear friend directed me to this 3770K review by AnandTech:

Note that max TDP for Ivy Bridge on the desktop has been reduced from 95W down to 77W thanks to Intel's 22nm process. The power savings do roughly follow that 18W decrease in TDP. Despite the power reduction, you may see 95W labels on boxes and OEMs are still asked to design for 95W as Ivy Bridge platforms can accept both 77W IVB and 95W Sandy Bridge parts.

can you folks put some more light on the subject?
Are these the first retail 3770K's with the 77W TDP box?
also, same (very expansive 22nm process) line being produced in two countries? What is the logic behind that?


rouvio.



*
I know and well aware of the Ivy Bridge heating issues due to the process, and the decision to go with higher TDP.
I'm talking about TDP on the box.

[PiLsY]

Wow a 01, never seen one before. Absolute centre wafer according to current theory so it should be good! Fire it up and check temps and clocking .

They probably did the initial run at 95w to make sure that any IB compatible board has to have a 95w spec VRM. I wouldnt read much more into it.

They always produce all cpu models at both fabs. This is redundancy for disaster recovery. If anything sent one fab offline that way they can still produce all models of cpu.

[Dumo]

77W Costaricas is the worst clocker imc/Mhz wise from a bunch of 3570K...at least on air

Neweeg's NJ warehouse started to send costas 77w yesterday

[rouvio]

Neweeg's NJ warehouse started to send costas 77w yesterday

this was purchased in Mayfield Heights / OH branch of MC.

I actually came in yesterday to ask for a 3770K, they said they are out of stock.
they had one that was already in display. I kindly refused..
the manager suggested to "stop by tomorrow - we get a new shipment of the 3770K CPU's. we sold them like crazy.. I guess people really love them"

@PiLsY - this is very encouraging to hear!
unfortunately I will only have the chance to hook up the new cpu in a week and a half.
I'm using H100 so there should be decent results.

[moorhen2]

I think it's 301 not 01 on the waffer.???

[Dumo]

3570K retail, I'm still looking for more 95W L206BXXX with good imc...

[PiLsY]

I think it's 301 not 01 on the waffer.???

Ive had a 944 before, there can't be 1000 cpus per wafer I wouldnt think? All guesswork though, the whole thing could be complete BS!

[Kallenator]

Ive had a 944 before, there can't be 1000 cpus per wafer I wouldnt think? All guesswork though, the whole thing could be complete BS!

Well, not far. Given that Intel produces these cpu's on 450mm wafers we get just over 159.000mm^2 and that can support around 1066 150mm^2 Ivy's. However ~10%? is lost due to the wafer being circular and some being broken.

***Correction, Intel uses 300mm wafers today.

[theix]

Well, not far. Given that Intel produces these cpu's on 450mm wafers we get just over 159.000mm^2 and that can support around 1066 150mm^2 Ivy's. However ~10%? is lost due to the wafer being circular and some being broken.

Why didn't they just make the wafer in square shape?

[itznfb]

Isn't the 95w on the box a typo on the first batch?
When you fire it up in UEFI it shows up at 77w. Same with CPUZ. 77w.

[Utroz]

Well, not far. Given that Intel produces these cpu's on 450mm wafers we get just over 159.000mm^2 and that can support around 1066 150mm^2 Ivy's. However ~10%? is lost due to the wafer being circular and some being broken.

Intel is currently using 300mm wafers but is supposed to be moving to 450mm in the next year or 2. http://www.intc.com/releasedetail.cf...kw=300mm+wafer

[PatRaceTin]

malay is better than costa????

[Holy_COW]

http://ark.intel.com/products/65523/...p-to-3_90-GHz)
Intel product info page says 77W

[Holy_COW]

malay is better than costa????

How comes the higher TDP is better?

[theix]

Maybe it was just Intel's typo after all.

[Kallenator]

Why didn't they just make the wafer in square shape?

Wafer production is not simple, there are probably many reasons to why it is as it is. Read about it here:
http://en.wikipedia.org/wiki/Wafer_(electronics)
http://en.wikipedia.org/wiki/Czochralski_process

Intel is currently using 300mm wafers but is supposed to be moving to 450mm in the next year or 2. http://www.intc.com/releasedetail.cf...kw=300mm+wafer

Should have checked my sources better, thanks. =)

[PiLsY]

I believe I read a long way back that silicon wafers are spun, so circular shapes aid the manufacturing process. That was over 10 years ago though and I dont trust my memory from yesterday so take that with a pinch of salt!

My maths has deserted me, how many cpus per 300mm wafer? Wondering if this last 2 or 3 digits thing is off mark .

[hersounds]

Costa rica rules!...better temps better OC by air...Costa rica everywhere!

[NKrader]

I believe I read a long way back that silicon wafers are spun, so circular shapes aid the manufacturing process. That was over 10 years ago though and I dont trust my memory from yesterday so take that with a pinch of salt!

yep still like that
funny story i worked for shin etsu america a few years back in their silicon ingot production room. its amazing to see these sometimes huge things being made..

i was part of the clean team i accually cleaned the machines from top to bottom when they were done so they could start next batch

[PiLsY]

Well i'll be! There's life in the old brain yet!

And dude, that is by far the coolest cleaning job I've ever heard of bar none.

[owikh84]

How comes the higher TDP is better?

I got Malay batch L215B260 77w printed on the box.
So there's a mix between 77w/95w and Malay/Costa

[[XC] Oj101]

From TOC - 77w Costa Rica -160'c coldbug, crap IMC when sub zero.

[BeepBeep2]

I thought I saw someone say that there is now a "platform TDP" and CPU TDP, platform including motherboard was supposed to be 95w, CPU 77w. That doesn't make much sense to me though, as different motherboards consume different amounts of power...

...

From TOC - 77w Costa Rica -160'c coldbug, crap IMC when sub zero.

IMOG at OCF had a CPU with -80 CBB and -110 CB... could not hit 6 GHz XD

[[XC] Oj101]

Ok South Africa as a whole has had better luck than that PLL voltage can move the CB temperature around though.

[Allubz]

I thought I saw someone say that there is now a "platform TDP" and CPU TDP, platform including motherboard was supposed to be 95w, CPU 77w. That doesn't make much sense to me though, as different motherboards consume different amounts of power...

This is about right. As Intel 7-series LGA1155 needs to officially support Sandy Bridge CPU's, it's fixed to support 95W TDP. Ivy Bridge, on the other hand, is typically 77W TDP CPU's.

Take a look at AMD mobo's. Some had support for 95W TDP CPU's, whilst there were 125W TDP CPU's of the same series; these weren't supported by the mobo's socket / power features (so in this case, the system was the other way around).

So, the supported TDP by the mobo doesn't determine the mobo's power draw - which is indeed dependent on the build quality and features of the mobo itself - but is an indication of the officially maximum supported CPU TDP.