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[ChinaDIY] Intel Core i7 4770k "review" - Page 21

post #201 of 298
Quote:
Originally Posted by ericeod View Post

But you should be able to OC using the baseclock, eliminating the need to buy a "k" series. So while it might not make sense to upgrade from current 2500k/3570k or 2600k/2700k/3770k, it would still be worthwhile for others wanting to pick up a cheap CPU to OC for fun. Unless the rumors are not true about the bclk....
I have a feeling you'll still need a K series to adjust the BClk.

LGA2011 Xeons won't accept different the CPU straps that you can set on the LGA2011 i7's, Intel doesn't have a reason to release a budget overclocker when they know we'll buy the K's all day long.
post #202 of 298
Quote:
Originally Posted by Stay Puft View Post

Eric they came out nd said the straps will only work with the K model chips

It's not confirmed, just rumored.
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post #203 of 298
I thought the reason for the unlocked bclk was due to a problem with power states, and that Intel was making this move to keep the CPU's power envelope as low as possible. it was when the system would come out of sleep, the CPU/GPU would kick on full power state. So the fix was to unlink them.

I guess we will know soon enough!
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post #204 of 298
Quote:
Originally Posted by Dyson Poindexter View Post

The R series is BGA, no delid required. Sorry to burst your bubble.
I stand corrected. You are absolutely right. Thank you!

/me puzzled as to why I even mentioned deliddeling

Edit: Typo corrected.
Edited by Pike - 5/11/13 at 4:05pm
post #205 of 298
Quote:
Originally Posted by Pike View Post

I stand corrected. You are absolutely right. Thanks you!

/me puzzled as to why I even mentioned deliddeling
It will be interesting to see the difference in die size with all that extra GPU in there!
post #206 of 298
Quote:
Originally Posted by ericeod View Post

I thought the reason for the unlocked bclk was due to a problem with power states, and that Intel was making this move to keep the CPU's power envelope as low as possible. it was when the system would come out of sleep, the CPU/GPU would kick on full power state. So the fix was to unlink them.

I guess we will know soon enough!

Technically, it doesn't seem like the BCLK is unlocked. It is still similar to SB and IB in that you cannot adjust it like you could in Nehalem. What they're adding is the clock strap features that are in SB-E, but who knows what models that will be on. Besides, the lack of BCLK adjustment is not due to the tying of the CPU and GPU BCLK. The lack of adjustment is due to the tying of the BCLK to the PCI-E, SATA, USB, etc clocks, where PCI-E, SATA, and USB devices will refuse to function outside of 90-110 Mhz.
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post #207 of 298
Quote:
Originally Posted by Tsumi View Post

Technically, it doesn't seem like the BCLK is unlocked. It is still similar to SB and IB in that you cannot adjust it like you could in Nehalem. What they're adding is the clock strap features that are in SB-E, but who knows what models that will be on. Besides, the lack of BCLK adjustment is not due to the tying of the CPU and GPU BCLK. The lack of adjustment is due to the tying of the BCLK to the PCI-E, SATA, USB, etc clocks, where PCI-E, SATA, and USB devices will refuse to function outside of 90-110 Mhz.

True, they are all tied together *they don't have to be from my understanding). But it was the GPU and CPU core specifically I thought was mentioned in the reasoning behind the power state issue.
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post #208 of 298
Quote:
Originally Posted by ericeod View Post

True, they are all tied together *they don't have to be from my understanding). But it was the GPU and CPU core specifically I thought was mentioned in the reasoning behind the power state issue.

It's probably behind the power state issue, but it is definitely not the reason why you can't overclock by BCLK. And no, they did not have to be tied together, they weren't tied together in Lynnfield processors.
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post #209 of 298
Quote:
Originally Posted by Tsumi View Post

It's probably behind the power state issue, but it is definitely not the reason why you can't overclock by BCLK. And no, they did not have to be tied together, they weren't tied together in Lynnfield processors.

Correct, they were not tied together in Lynnfield. And I guess the correct term is "decoupled". And yes, it is the PCIe controller integrated into the core as you stated above. Once Intel started focusing on the power envelope of their CPUs, they started coupling everything together. But the power state issue is what led Intel to change from the way it was locked in SB and IB.

But it does look like the bclk will not be what it was with 1366 Nehalem/Bloomfield, but rather a selectable divider much like SB-e. I was hoping for full control...

Anandtech: Intel Details Haswell Overclocking at IDF Beijing
by Anand Lal Shimpi on 04/12/2013
Quote:
The default BCLK for Haswell parts will remain at 100MHz, however now you'll have the ability to select 125MHz or 167MHz as well. The higher BCLK points are selectable because they come with different dividers to keep PCIe and DMI frequencies in spec. At each of these BCLK settings (100/125/167MHz), the typical inflexbility from previous architectures remain.
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post #210 of 298
Haswell! biggrin.gif It seem really good.
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