Fair enough. Performance differences due to cache size are even more varied than those due to IPC improvements, so it is certainly difficult to come up with good numbers.
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Broadwell-K i7 5775C/i5 5675C
- Thread starter Dave2150
- Start date
What are the chances of these overclocking to 4.5Ghz or more?
Last year I went with the 4690K and said to myself I'd upgrade to the Broadwell 4core 8thread CPU release in 2015.
Looking at those clock speeds, I'm not entirely sure they'll match my 4.6Ghz overclock.
We could be in the weird situation where 4.6Ghz+ clocked 4790K's are faster than 5775's because they don't clock well.
Last year I went with the 4690K and said to myself I'd upgrade to the Broadwell 4core 8thread CPU release in 2015.
Looking at those clock speeds, I'm not entirely sure they'll match my 4.6Ghz overclock.
We could be in the weird situation where 4.6Ghz+ clocked 4790K's are faster than 5775's because they don't clock well.
Soldato
These look pants, as I feared all the focus is on IGPU with Intel's mainstream. Even removing cache to make room for eDRAM 
Meaning Skylake will likely be no better.
Looks like I'm going to Mini-ITX X99 as soon as it's available.
Meh !
Meaning Skylake will likely be no better.Looks like I'm going to Mini-ITX X99 as soon as it's available.
Meh !
Caporegime
Really wanted a CPU upgrade this year but it's not looking good.
Might just buy a binned 4770k and stick it under water.
Might just buy a binned 4770k and stick it under water.
Associate
Obviously this is pure speculation but we haven't had a great overclocking line for quite some time now, indeed the potential seems to be less if anything with each new generation. The fact that they are releasing at a 65w TDP rather than circa 90 may suggest frequency scaling issues.
Caporegime
Meh... again.
Basically the pretty crappy IPC increases since Sandy Bridge have meant that Intel has needed to bump up clock speeds to refresh their CPU line-ups each generation. If that can't be sustained any more then they've got a bit of a problem, at the high end anyway.
Intel's 22nm is nowhere near 22 (more like 28) so I'm sure it was many times easier than actually going sub-20 with finfets to boot.
Indium Gallium Arsenide is looking set to replace silicon and makes very fast transistors. It would appear at 7nm so hopefully by 2020 clockspeeds may be able to spiral upwards again.
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Caporegime
Thinking about it.
I wouldn't be surprised if the 4790K is still the performance mainstream part.
But apart from more IPC gain (Which lets face it, Intel are storming ahead....) Intel can't suddenly just increase core/thread count without it severely hurting competition.
Drip improvements are probably best for the industry (Or should I say AMD)
I wouldn't be surprised if the 4790K is still the performance mainstream part.
But apart from more IPC gain (Which lets face it, Intel are storming ahead....) Intel can't suddenly just increase core/thread count without it severely hurting competition.
Drip improvements are probably best for the industry (Or should I say AMD)
Soldato
Damn... there was me last week starting to get mildly excited about Broadwell.
See http://forums.overclockers.co.uk/showthread.php?t=18659159
Especially when dave2150 said
"So I guess it's quite possible Broadwell-K will be able to smash the 4790k's performance, when taking into account the extra 128MB l4 cache that can be used for CPU performance "
O'well...
See http://forums.overclockers.co.uk/showthread.php?t=18659159
Especially when dave2150 said
"So I guess it's quite possible Broadwell-K will be able to smash the 4790k's performance, when taking into account the extra 128MB l4 cache that can be used for CPU performance "
O'well...
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Ye, we all assumed Broadwell would be superior to Haswell (DC), sadly it won't be and we'll have to wait for Skylake.
What's the release schedule for skylake?
Are engineering samples usually worse performers than released products? What were the released Haswell/DC processors like compared to their leaked sample figures?
Associate
Engineering samples were usually god-tier clockers, a.k.a 5ghz on air.
This should still be an OK upgrade for anyone on the regular haswells though imo.
This should still be an OK upgrade for anyone on the regular haswells though imo.
Caporegime
You wouldn't be saying that Intel are holding back to help AMD would you? because that would be silly.
Anybody consider the possibility that these leaks are false and now people are disappointed, they'll just buy up the last remaining Haswells?
Naah
Intel made a statement confirming these CPU's are 65W and are designed for Mini PC's, all in ones etc.
Intel said:
http://blogs.intel.com/technology/2015/03/gdc-2015/
The only strange thing here is that these Broadwell chips are unlocked models. Why Intel would unlock CPU's that are designed for thermally constricted cases is very strange - though I assume it's just so Z97 owners can have a new toy to play with.
Maybe they'll turn out to be overclocking monsters, and do 5Ghz on air, though I highly doubt it
Soldato
So is the eDRAM used for CPU as well or only gaming IGPU?