Broadwell-K i7 5775C/i5 5675C

Dave2150 · 16 May 2015 at 17:45

Quite a few canandian, Czech Republic and eastern european countries are listing the I7 5775C for $380 to 450 (US Dollars). In other words, same price as a 5820k or slightly more expensive.

Dave2150 · 16 May 2015 at 17:48

Boomstick777 said:
How you can say that without seeing the performance? You keep making blanket statements based on thoughts not facts

We need to see legit benchmarks / reviews before condemning Broadwell

We've already seen it's SuperPI scores (from the facebook leak) which are unimpressive, since this CPU is clocked way slower than a 4790k and has 2MB less L3 cache.

Once again, these two Broadwell-C CPU's are not meant to be successors to the 4790k. They are successors to the 4770R (Iris Pro Haswell). Skylake 6700k is the true successor the the 4790k.

Dave2150 · 16 May 2015 at 19:02

Boomstick777 said:
Why have written 'Once again, these two ....'

That wasn't the issue, the issue was you saying Skylake was 15% faster than Haswell based on benchmarks we can't confirm. Now you're diverting onto another subject lol.

Until we see legit benchmarks / reviews I expect Broadwell to bring about 5% improvement over Haswell and Skylake 5% over Broadwell.

So Skylake could be roughly 10% over Haswell.

I'm done with this foolishness

Let's try keep this thread on topic and about Broadwell. I have a Skylake thread going where we can debate Skylake's IPC

Dave2150 · 16 May 2015 at 20:06

Orangey said:
I saw on another site earlier a listing for "6700" (non-K) $380 also... what's going on?

I'd edit out the competitor link mate, or you may get into trouble.

I think it has to be a price mistake though, $376 Canadian dollars is roughly £200, which even after VAT and the UK sucker tax would put it way too cheap, compared to the top I7 mainstream part price we've come to expect.

Dave2150 · 21 May 2015 at 02:41

Not long to go until Broadwell-C launches. Both CPU's should be announced at Computex 2015 (which starts June 1st)

Dave2150 · 28 May 2015 at 22:09

Harlequin said:
hmmm PCPer are saying Intel going to NOT release Broadwell for retail and it`ll be OEM only? big launch to be Skylake instead with full product range??

It could well be that it will be OEM only - remember these CPU's are designed for those without a GPU - so kinda useless for us with our Radeons/Geforce GTX's. The 4790k is very likely slightly faster, considering it's clockspeeds, and quite a bit cheaper than Broadwell-C.

Dave2150 · 2 Jun 2015 at 10:57

Reviews are out!

IGPU performance - the best we have ever seen:

Full review: http://www.tomshardware.co.uk/intel-core-i7-5775c-i5-5675c-broadwell,review-33215.html

Dave2150 · 2 Jun 2015 at 11:13

Martini1991 said:
Lol @ AMD losing the IGP crown. "Intel can't catch up" they said.

Who knows what will happen once K chips arrive, The 4790K being "faster" is somewhat short sighted, given its clock advantage.
This is why I didn't understand a lot of the negativity towards Broadwell, what Intel have done with is silly good.

There will be no 'K' chips for Broadwell - this is it, the two 'C' models. Next up is Skylake in August.

Dave2150 · 2 Jun 2015 at 11:20

Oh damn - just saw this posted on the Anandtech forums:

http://www.pcgameshardware.de/Broadwell-Codename-259477/Specials/Intel-Broadwell-Test-Core-i7-5775C-i5-5675C-Iris-Pro-Graphics-6200-1160517/

They tested with a dedicated GPU (780ti) and the 5775C actually beats the 4790k and 5820k in some games, loosing in some and matching them in others.

That's quite impressive, the 5.5% IPC gain and the 128MB eDRAM must be responsible for these performance numbers, considering the clock speed disadvantage it has compared to the 4790k/5820k.

Note they are testing at a very low resolution (720p) to further exaggerate the performance difference etc. Still impressive.

Dave2150 · 2 Jun 2015 at 11:29

Price wise, pcgameshardware.de review mentioned it was only $27 more expensive than the 4790k - I expected it to be much more expensive than this, so another win

Dave2150 · 2 Jun 2015 at 11:32

Martini1991 said:
It shouldn't be more expensive if it can't clock, that's not a win.

It can overclock - the 'C' CPU's are also unlocked. Why they changed the naming convention's from 'K' to 'C' for Broadwell is quite confusing.

One review mentioned 4Ghz was no problem to obtain, I'm yet to find any thorough overclocking testing results.

Dave2150 · 2 Jun 2015 at 11:33

Boomstick777 said:
It looks awesome tbh, great chip for HTPC / Small form factor. Wouldn't even need a dGPU.

This also bodes well for Skylake being a nice performer as well. If Broadwell can trade blows will a lower clock, then Skylake should be very nice.

Looking forward to Skylake -E.

Yea, I'm very impressed with this CPU for sure. And that IGPU with only 1W idle power draw...... Just crazy.

Dave2150 · 2 Jun 2015 at 11:35

WTF - could these CPU's be soldered? :eek:

Bearing in mind they are using the stock cooler:

These must be soldered - Haswell at 3.7Ghz under a 30 minute torture test on the stock HSF would be 80-90DC!

Dave2150 · 2 Jun 2015 at 11:44

davida76 said:
More likely just the lower tdp at play, this is Intel afterall, solder costs money

Hopefully someone will try and delid one soon so we can findout! Or maybe 8pack will drop in and let us know, I'm sure he's been raping a few of these already

Dave2150 · 2 Jun 2015 at 15:32

Anandtech confirmed that Broadwell-C (both the I5 and I7) are soldered chips! I knew they had to be with those crazy low temperatures during the burn test

They are all soldered down parts as well.

http://www.anandtech.com/show/9320/intel-broadwell-review-i7-5775c-i5-5765c

Dave2150 · 2 Jun 2015 at 17:55

kristmace said:
The iGPU benchmarks are insane. Toms Hardware has it beating an R7 250.

The CPU performance boost is typical of what we've seen from Intel recently. There's very little point in upgrading every generation.

My i7-870 overclocked is still doing well enough for me... I think I can squeeze 2-3 more years out of it.

Remember these Broadwell-C CPU's are not advertised as being a 4790k successor. They are only aimed for small factor PC's, NUC's without a dedicated GPU.

Skylake will offer a good jump over Haswell, and it will be here in August/September

Dave2150 · 2 Jun 2015 at 19:43

DragonQ said:
Will Skylake have an even better IGP? Usually they bump it up every generation but given that there's so little time between these, and the fact that they're on the same manufacturing node, I wonder if these Broadwell-C chips are really just testbeds for their HD 6xxx IGPs that will also feature on Skylake?

Sklylake further improves the IGP, though the initial Skylake release won't have the 'Iris Pro' 128MB eDRAM initially, not sure on the date for when it will.

Dave2150 · 2 Jun 2015 at 19:51

WingZero30 said:
These 65W cpus do look impressive. However I suppose Broadwell-E should be a more exciting product for X99 users and hopefully it should be launching in less than a year in Q1 2016.

Broadwell-E 'should' only be a minor 5.5% IPC improvement over Haswell-E, so quite a mundane improvement.

That's unless they manage to increase the clockspeeds more than 100Mhz or so, which is doubtful, but we'll see.

I'm far more interested in Skylake-E - PCI-Ev4, 10-15% IPC over Haswell, though it's a long way away (2017) so about as pointless talking about as Zen

Dave2150 · 4 Jun 2015 at 19:25

l2ez4m said:
So they gonna be using same old gunk tim?!

Yeh was just about to post this also.

Oh well, wish it was soldered.

At stock (65w) these CPU's still run very cool - we just need to see the temperatures during a stress test when overclocked to 4790k speeds and higher.

Dave2150 · 10 Jun 2015 at 12:47

arcon33 said:
Would it be worth holding out and getting a i7 5775C over a i7 4790k for a gaming rig?

If your planning to add a graphics card to your PC, then the 4790k is a much better CPU.

Price wise the 5775C is around £308 in the UK, no stock yet though.