Broadwell-K i7 5775C/i5 5675C

BaronVonDuncs · 2 May 2015 at 23:34

Dave2150 said:
Intel said that these two Broadwell CPU's are aimed for mini PC's, smaller factor PC's etc - PC's without a dedicated graphics card, hence the special 'iris pro' GPU with 128MB of eDRAM.

So in other words, they are not meant to compete with the 4790k, and are for an entirely different purpose.

I am however very interested in seeing how well these CPU's overclock, as it's our first go at overclocking on Intel's new 14nm process.

Ah well that makes way more sense then.

Boomstick777 · 3 May 2015 at 00:18

Dave2150 said:
Intel said that these two Broadwell CPU's are aimed for mini PC's, smaller factor PC's etc...

So in other words, they are not meant to compete with the 4790k, and are for an entirely different purpose...

would have been nice of Intel to tell people this before they went ahead and bought into Z97 thinking they would get 4770K / 4790K replacements with Broadwell. Z97 was touted as supporting Broadwell, what they didn't tell us was we were only getting 2 chips..

Even worse as Devil's Canyon is supported on older than Z97 mobo's. Literally a pointless upgrade if they don't bring anything decent to desktop with Broadwell.

Bit dodgy, we got stitched up good and proper lol. Guess they want everyone to buy another mobo for Skylake instead. Yup thanks Intel

Dave2150 · 3 May 2015 at 00:26

Boomstick777 said:
would have been nice of Intel to tell people this before they went ahead and bought into Z97 thinking they would get 4770K / 4790K replacements with Broadwell. Z97 was touted as supporting Broadwell, what they didn't tell us was we were only getting 2 chips..

Even worse as Devil's Canyon is supported on older than Z97 mobo's. Literally a pointless upgrade if they don't bring anything decent to desktop with Broadwell.

Bit dodgy, we got stitched up good and proper lol. Guess they want everyone to buy another mobo for Skylake instead. Yup thanks Intel

Intel covered themselves, as there will be Broadwell desktop CPU's (all 2 of them). They must have assumed people would expect a 4790k successor though, so yeh I agree it's very disappointing for those who bought z97 with a mind to upgrade to Broadwell down the road.

Though, we still don't know how well this 14nm process overclocks, though I highly doubt it will clock as high as the 4790k. We could be surprised.

We also don't know how much the 128MB eDRAM L4 cache will affect things, so there may be a glimmer of hope for Z97 users, albeit a rather weak one.

Dave2150 · 4 May 2015 at 20:47

Update:

Broadwell-C (k) pictured:

Along with an updated roadmap:

Broadwell-C April, May and June (Q2)

Skylake-k July, August and September (Q3)

Broadwell-E January, February and March (Q1 2016)

Source: http://diy.pconline.com.cn/637/6375701.html

-------------------------

So, not long at all to wait for Broadwell-C, Skylake-K coming on time in Q3 and of course Broadwell-E next year.

Nice to see new CPU's are almost here

Orangey · 4 May 2015 at 21:09

I doubt it'll show until end of Sept, almost half a year, no doubt they will do whatever it takes to get laptop SKUs out in time for back to school but there's a very good reason for all the delays so far and these things take a long time to iron out.

mahius · 4 May 2015 at 22:19

Dave2150 said:
Update:

Broadwell-C (k) pictured:

Woah... that couldn't be the back of the processor could it? What happened to all those pins? If that is an actual Broadwell-C, then it may use a new chipset? How will that thing fit into existing boards? I'm shrugging that image off as either concept art or fake. It's too strange... *shudder*

Sylver123 · 4 May 2015 at 22:29

mahius said:
Woah... that couldn't be the back of the processor could it? What happened to all those pins? If that is an actual Broadwell-C, then it may use a new chipset? How will that thing fit into existing boards? I'm shrugging that image off as either concept art or fake. It's too strange... *shudder*

The picture is of the front of the processor.

Dave2150 · 4 May 2015 at 23:32

mahius said:
Woah... that couldn't be the back of the processor could it? What happened to all those pins? If that is an actual Broadwell-C, then it may use a new chipset? How will that thing fit into existing boards? I'm shrugging that image off as either concept art or fake. It's too strange... *shudder*

As Sylver mentioned, it's the top of the CPU, though without it's IHS. Looks to be a load of capacitors or resistors alongside the large die.

Boomstick777 · 5 May 2015 at 09:08

Anyone know why Brooadwell sits above Skylake in the roadmap just under 5820K? Does that indicate that these chips could be high performance?

Telecaster · 5 May 2015 at 09:49

Do you think they're implying it's performance standing by it's name? 5675 is not quite 5690 and 5775 is not quite 5790, so these are not quite full fat chips maybe?

It's almost like the .75 nomenclature is inferring it's only 3/4 of full performance

I think the fact that they don't follow on from the previous high end chips on that roadmap says it all, it's like they're a line of CPU all by themselves, I'll be amazed if they're any sort of Devils Canyon upgrade.

Boomstick777 · 5 May 2015 at 10:26

If you look at the stack, it's low performance at the bottom and high performance at the top.

Then if you go by the numbers the 5775 VS 6700 (775 VS 700) indicates it's a higher tier in it's range than 6700K. Maybe more 6XX chips to come later X775 and X790.

Maybe the performance on the 5775 will be decent after all? ...

Telecaster · 5 May 2015 at 10:34

But they're 65w TDP so where is the performance coming from?

Boomstick777 · 5 May 2015 at 10:38

After some more digging I'm convinced the 5775C is actually a lil beast.

The closest thing we have to it is the 4770R this is 3.2GHz > 3.9GHz 4 core / 8 thread CPU with 6MB Cache and 128MB eDRAM in a 65W TDP

4770K is 3.5Ghz > 3.9Ghz 4 core / 8 thread CPU with 8MB Cache and 84W TDP

This chip can actually usurp the 4770K in some benchmarks despite less cache and clock speed. The IGPU actually beats the AMD A10-7850K APU as well. So this is a capable part.

Maybe these chips will be worthy after all.

mahius · 5 May 2015 at 12:49

Things might make sense if these chips are actually good. If so, then I might rethink that 4790k on my upcoming build. Or still go with it, if the 5775C simply replaces it's price point causing it to be cheaper. But I'm doubtful. Give me real-world benchmarks and then I'll be convinced.

Ayahuasca · 5 May 2015 at 12:53

So are these chips not overclockable by multiplier?

Boomstick777 · 5 May 2015 at 13:06

Ayahuasca said:
So are these chips not overclockable by multiplier?

Yeah the Broadwell 'C' chips are unlocked.

Ayahuasca · 5 May 2015 at 13:08

Interesting, might be a worthy upgrade over my 3770k after all then.

Probably still wait for skylake.

eddiew · 5 May 2015 at 15:33

Potentially exciting after all... but is there any real reason not to wait (4 months?) for Skylake?

Seems like a very odd launch of two products so close to each other...

Telecaster · 5 May 2015 at 15:56

I'm still not convinced they're part of a traditional desktop roadmap, it seems odd how they've gone back to traditional model numbers for the following release of Skylake, why change it up for one release :S

Boomstick777 · 5 May 2015 at 16:41

Telecaster said:
I'm still not convinced they're part of a traditional desktop roadmap, it seems odd how they've gone back to traditional model numbers for the following release of Skylake, why change it up for one release :S

They haven't.

The Skylake chip is 6700K, denoting a lower tier of chip than the 5775C in it's line.

My best guess is that we could see a 5795C (Broadwell) and a 6770K / 6790K (Skylake) later on down the road if the demand is there.

For people on Z97 that don't want to have to change mobo's or memory for Skylake at least the i7 5775C doesn't look a total failure.

In terms of just performance both Broadwell and Skylake don't seem that impressive tbh, especially coming from 4770K / 4790K. Cannonlake or Zen might be a better bet or even beyond that.