Intel Broadwell Thread

[tential]

http://hothardware.com/reviews/intel-core-i7-5775c-with-iris-pro-graphics-review

Some nice OC results there not sure if this was added to this thread yet.

 

[frozentundra123456]

http://hothardware.com/reviews/intel-core-i7-5775c-with-iris-pro-graphics-review

Some nice OC results there not sure if this was added to this thread yet.

Overclocking was not that impressive actually. It was nice to see direct comparison with iris pro 5200 finally. The 6200 is quite a bit faster.

 

[Arachnotronic]

http://hothardware.com/reviews/intel-core-i7-5775c-with-iris-pro-graphics-review

Some nice OC results there not sure if this was added to this thread yet.

Thanks for the link. Solid review.

 

[jpiniero]

Perhaps the question is why more reviewers aren't doing more perf/watt comparisons with efficient discrete parts like GTX 750.

I imagine Broadwell-C is still suffering from bandwidth issues even with the edram. Maybe Skylake-C with high clocked DDR4 will do better. Still, the purpose of Iris Pro is mainly to go after the mobile laptop parts.

That being said that driver performance is becoming the biggest factor in actual game performance, especially now that developers are spending the bare minimum in getting PC ports completed and aren't doing much optimization on their own. There's no way Intel is going to spend what nVidia is in terms of optimizing for every single game.

 

[lowmotion]

Did someone read the news about Skylake?

Broadwell seems to be in top of the charts in most of the games. Skylake is a little bit better to overclock and a little bit cooler due non-integrated VRMs. Skylake is up to 9% in front of haswell, but haswell has been tested with DDR3-1600 only.

Broadwell could become the new secret buyers tip.


BUT THERE ARE NO FINAL BROADWELL SUPPORT BIOS OUT THERE.

@IntelUser2000
I sold my broadwell weeks ago. But at the moment i am overclocking my 3rd haswell 4670k and it goes up to 117w (hwmonitor) at 4,5 Ghz @ 1,2v. Broadwell (i cant find my notes) was never that high - but the bios didnt allow to go beyond the 65w limitation except by using turbo oc which is uncommon on gigabyte boards.

 

[DrMrLordX]

BUT THERE ARE NO FINAL BROADWELL SUPPORT BIOS OUT THERE.

Fugger had some extra info about that a few days ago:

http://www.xtremesystems.org/forums...75C-on-Phase&p=5257163&viewfull=1#post5257163

 

[lowmotion]

yepp i saw that. 4 weeks ago they released the last bios beta versions. I am still waiting for final bios versions...


... and Anandtech Broadwell Part II

 

[richierich1212]

So if there's no final BIOS', doesn't that kind of indicate that motherboard makers knew that Intel wasn't going to release Broadwell desktop worldwide? That's kind of annoying. Intel forcing people to upgrade to LGA1151 instead of being able to drop in a Broadwell CPU, perhaps? I bought an ASUS Z97-i Plus hoping that I could drop in a 5675C or 5775C down the road.

 

[nenforcer]

So if there's no final BIOS', doesn't that kind of indicate that motherboard makers knew that Intel wasn't going to release Broadwell desktop worldwide? That's kind of annoying. Intel forcing people to upgrade to LGA1151 instead of being able to drop in a Broadwell CPU, perhaps? I bought an ASUS Z97-i Plus hoping that I could drop in a 5675C or 5775C down the road.

Absolutely. I bought 2 Z87 boards on a steep discount hoping they might possibly be able to take Broadwell chips since they are pretty much identical to the Z97 equivalent except for possibly some slight electrical tweaks.

I wanted the onboard graphics and low TDP for my new parents Windows 10 computers.

Broadwell was suppose to be last years .14nm introduction chip not Haswell Refresh. Enthusiasts may end up paying top dollar for these chips on eBay for years to come.

It looks like in the US unless they show up in online resellers in the next couple of days like they are suppose to everything is being geared for a massive Skylake DDR4 launch on Wednesday.

 

[ShintaiDK]

Broadwell was suppose to be last years .14nm introduction chip not Haswell Refresh.

Thats not true. Broadwell was never to replace Haswell Refresh but only complement it.

 

[csbin]

http://www.anandtech.com/show/9482/intel-broadwell-pt2-overclocking-ipc/3

Sandy Bridge to Ivy Bridge: Average ~4.8% Up
Ivy Bridge to Haswell: Average ~10.2% Up
Haswell to Broadwell: Average ~3.3% Up

 

[Sweepr]

Part 2 out now, reading it.

AnandTech: The Intel Broadwell Review Part 2: Overclocking, IPC and Generational Analysis

Cycling back to our WinRAR test, things look a little different. Ivy Bridge to Haswell gives only a 3.1% difference, but the eDRAM in Broadwell slaps on another 16.6% performance increase, dropping the benchmark from 76.65 seconds to 63.91 seconds. When eDRAM counts, it counts a lot.

www.anandtech.com/show/9482/intel-broadwell-pt2-overclocking-ipc

 

[meson2000]

I skimmed through it. Kinda a moot point since you can't buy the CPU anywhere in the USA and it has been that way since launch. I was hoping he might have shed some light on the situation, but apparently not.

Part 2 out now, reading it.

AnandTech: The Intel Broadwell Review Part 2: Overclocking, IPC and Generational Analysis

www.anandtech.com/show/9482/intel-broadwell-pt2-overclocking-ipc

 

[Fjodor2001]

Broadwell overclocking potential from Anandtech's review of desktop Broadwell:

Intel 24/7 Overclocking Expected Results in MHz

                Stock Speed  Good OC  Great OC
Sandy Bridge i7     3400     4700     4900
Ivy Bridge i7       3500     4500     4700
Haswell i7          3500     4300     4500
Broadwell i7        3300     4100     4300

Yikes, that was even worse than feared! And it's getting worse for every CPU generation.

I hope this is not what we can expect from desktop 14 nm in general, and thus Skylake too...

 

[Fjodor2001]

Also from the AT review:

It is worth noting at least two points here. When Intel reduces the process node size, the elements of the processor are smaller and removing the heat generated is more problematic. Some of this can be mitigated through the fundamental design of the processor, such as not having heat generating logic next to each other and then used in the program in quick succession to make a hotspot. However, if a processor is fundamentally designed as a mobile first platform, overclocking may not even be a consideration at the design phase and merely tacked on as a ‘feature’ to certain models at the end.

I guess this explains part of the poor overclocking results.

 

[inf64]

Broadwell overclocking potential from Anandtech's review of desktop Broadwell:

Intel 24/7 Overclocking Expected Results in MHz

                Stock Speed  Good OC  Great OC
Sandy Bridge i7     3400     4700     4900
Ivy Bridge i7       3500     4500     4700
Haswell i7          3500     4300     4500
Broadwell i7        3300     4100     4300

Yikes, that was even worse than feared! And it's getting worse for every CPU generation.

I hope this is not what we can expect from desktop 14 nm in general, and thus Skylake too...

Anyone still remembers Francois Piodnel's BS claims of Haswell and later Broadwell OCing to 5Ghz on air (he even tweeted he supposedly had 5Ghz Haswell on passive heatsink without a fan ). Now we have this chart from AT (based on intel's own official data) showing totally different picture.

 

[SPBHM]

that's a strange performance increase from SB to IB

 

[jpiniero]

Was kind of hoping they would do some OCing of the IGP, just to see what is possible with it.

 

[Arachnotronic]

Anyone still remembers Francois Piodnel's BS claims of Haswell and later Broadwell OCing to 5Ghz on air (he even tweeted he supposedly had 5Ghz Haswell on passive heatsink without a fan ). Now we have this chart from AT (based on intel's own official data) showing totally different picture.

He claimed Broadwell was a good overclocker?

And yeah, I remember that Haswell 5GHz-without-a-fan claim. Maybe on a cherry picked sample?

 

[CHADBOGA]

Anyone still remembers Francois Piodnel's BS claims of Haswell and later Broadwell OCing to 5Ghz on air (he even tweeted he supposedly had 5Ghz Haswell on passive heatsink without a fan ). Now we have this chart from AT (based on intel's own official data) showing totally different picture.

Francois wasn't gonna let John Fruehe have all the fun.

 

[frozentundra123456]

He claimed Broadwell was a good overclocker?

And yeah, I remember that Haswell 5GHz-without-a-fan claim. Maybe on a cherry picked sample?

Yea, I remember the DC claims, but I dont recall anyone claiming Broadwell was a good overclocker, at least anyone from Intel. A rep from Intel does claim that with experience and refinements under water cooling, around 40% of 4790k can reach 4.9 to 5.0.

haswell overclocking

Not sure what kind of voltages he is pushing, but supposedly overclocking is better now than on the original samples.

 

[inf64]

For D. Canyon the claims are more or less correct, these chips are very good clockers- only not on passive heatsinks . One needs very good air or WC setup as these chips emit a lot of heat when OCed. My own i5 goes to 4.3Ghz rock stable on 1.2V, albeit on AIO WC. I have no clue if this chip could be a 4.5+Ghz candidate, never really wanted to push it more than this, but I suppose it could OC all the way to 4.8Ghz with some Vcore bumps and fan cranked to maximum on my Seidon 120V.

 

[DrMrLordX]

There is still the issue of what voltages Haswell, Broadwell, and Skylake (and beyond) can handle as a day-to-day overclock. I haven't seen a lot of Haswells going dead from excess vcore (excess vdimm maybe; that's been an issue since Nehalem). So what someone can or can not achieve may have a lot to do with how much voltage they're willing to pump through the chip. Mind you, passive cooling . . . meh.

 

[Dufus]

Kinda a moot point since you can't buy the CPU anywhere in the USA and it has been that way since launch.

None where I live either. Strange since there's already a refresh for D-1540/20 in the works for release in November.

 

[ehume]

None where I live either. Strange since there's already a refresh for D-1540/20 in the works for release in November.

It was a good chip for laptops. It's a great chip for AIO's. As for us, I see us waiting to Kaby Lake. I hope to see an included eRAM in it. I also hope to see the kind of changes we saw between the 4770k and the 4790k. I have one of each, and the 4790k is one hot momma.