The i7-5775C is awesome

[Hi-Fi Man]

Just got a i7-5775C as an upgrade from my i5-4690K and all I can say is wow. This chip runs much cooler, max 48C (lower fan speed too!) vs 66C @ stock clocks on a Zalman CNPS10X. On top of that the temps are way more stable as well, no wild fluctuations. Perhaps it's because of the 14nm node and larger die.

I'm getting an Asus Z97-A/USB3.1 board to test out the OC potential on this chip (not hoping for much though) because my non-Z OC feature on my ASRock H97 Pro4 doesn't work on Broadwell. I'll report back with OC results.

Some of you may be thinking why not go Skylake if you're going to replace the mobo and CPU. I didn't because that would mean also replacing my RAM and the i7-5775C in many games ends up being faster then the i7-6700K. Plus the i7-5775C seems to be one of those one of a kind chips that will have a better resale value down the road.

 

[richierich1212]

You could have bought a LGA1151 mobo that supports DDR3....

 

[frozentundra123456]

Not sure there are *that* many games that are faster on 5775C than on 6700k with fast ram. Maybe if you get lucky in the silicon lottery (sounds like you did) and get a good overclock. It is a very nice chip though. Too bad it was kind of stillborn because of intel pushing out skylake.

 

[Hi-Fi Man]

You could have bought a LGA1151 mobo that supports DDR3....

True but I hear Skylake is a dog with slow RAM.

 

[coercitiv]

True but I hear Skylake is a dog with slow RAM.

Judging by prices in my country the price difference alone from 5775C to 6700K would have saved you enough money to cover for 50% of a decent DDR4 16GB kit. Now you're also getting a new motherboard.

You can justify your purchase by wanting a more exotic chip, but financially it makes little sense. I assume you will also buy a new DDR3 kit to keep both systems functional, maybe sell the old one as a whole.

 

[Magic Carpet]

True but I hear Skylake is a dog with slow RAM.

In a couple of years there will be nicer DDR4 kits available on the market at the same or lower voltage. By that time, there will be something better than Skylake anyway. Good choice Hi-Fi :thumbsup:

 

[NTMBK]

If you'd bought a Skylake, you would have posters saying that you should have bought a Broadwell instead Don't sweat it. You have an awesome chip, looking forward to seeing how it overclocks! :thumbsup: Are you going to play around with the GPU? Not seen any good articles about overclocking that.

 

[coercitiv]

If you'd bought a Skylake, you would have posters saying that you should have bought a Broadwell instead Don't sweat it.

I did not say he should have bought Skylake instead, but rather that he should own the true reason for the purchase: it's a cool chip to have!

 

[MBrown]

I am eager to see your overclocking results. I was very tempted to pick one up just to compare against my 4790k and then possibly sell my 4790k so it would't be as dumb of a financial decision. LOL. And to have something different than everyone else.

 

[Zodiark1593]

I am eager to see your overclocking results. I was very tempted to pick one up just to compare against my 4790k and then possibly sell my 4790k so it would't be as dumb of a financial decision. LOL. And to have something different than everyone else.

Well, I'd be definitely willing to buy a used 4790K myself if people start dumping them for the 5775Cs.

 

[Magic Carpet]

I am eager to see your overclocking results. I was very tempted to pick one up just to compare against my 4790k and then possibly sell my 4790k so it would't be as dumb of a financial decision. LOL. And to have something different than everyone else.

In some workloads that can take advantage of that cache, Broadwell does shine, at lower clocks, less power consumption. Great design, imo.

 

[Dasa2]

the extra cache on 5775c seems to bring a large performance increase in cpu limited games with slow ram
but the cache isnt all that much quicker than a fast kit of ddr3 it would be interesting to see if there is much difference between it and a 4690k when both are running a fast kit of ddr3

 

[Soulkeeper]

They are saying the skylake iris pro will be more than just an eviction cache.
So the greatness of the 5775c will be even better if intel gets around to releasing a desktop skylake iris pro.
Here's to hoping they continue this trend.

 

[beginner99]

Judging by prices in my country the price difference alone from 5775C to 6700K would have saved you enough money to cover for 50% of a decent DDR4 16GB kit. Now you're also getting a new motherboard.

You can justify your purchase by wanting a more exotic chip, but financially it makes little sense. I assume you will also buy a new DDR3 kit to keep both systems functional, maybe sell the old one as a whole.

Here there are the same price but just couple weeks-month back when intel had supply issues 6700k was $100 more. Then it actually made a lot of sense to buy a 5775c because you save on CPU and RAM. I considered it as well.

 

[Head1985]

5775c have better IPC than skylake, but cant OC like skylake.
4.5Ghz skylake will be little faster with 3000+DDR4 than 5775c at 4.2Ghz
http://www.purepc.pl/pamieci_ram/te...pamieci_ram_wybrac_do_intel_skylake?page=0,11

 

[Hi-Fi Man]

Here are some CPU-Z results @ stock with a decent undervolt (1.150v under full load) to tide you guys over.

CPU-Z single thread: 1970 22%/25% reference 4790K
CPU-Z multi thread: 7860 91%/100% reference 4790K

Pretty decent given it's much lower clocks.

 

[ZGR]

Would you say it is a solid upgrade from the 4690k? I have been eyeing the 5775C for quite some time.

Would be quite the disappointment to have a bad overclocker though.

If I do get it, I would also want to splurge on some ultra fast DDR3.

 

[Dave2150]

They are saying the skylake iris pro will be more than just an eviction cache.
So the greatness of the 5775c will be even better if intel gets around to releasing a desktop skylake iris pro.
Here's to hoping they continue this trend.

Yep, Skylake Iris Pro should be here soon, imagine how fast it will be with DDR4 and Skylake's increased IPC to back it up

 

[Hi-Fi Man]

Would you say it is a solid upgrade from the 4690k? I have been eyeing the 5775C for quite some time.

Would be quite the disappointment to have a bad overclocker though.

If I do get it, I would also want to splurge on some ultra fast DDR3.

My 4690K was OCed to 4.5GHz. This i7 is still faster in multi threaded programs at stock and not too far behind in single thread. Once I OC it to at least 4GHz it should quite a bit faster in both areas. At stock it runs at 3.6GHz on all cores, adding 400MHz at minimum should help and I might be able to turbo it higher.

Don't expect too much on the OC though. According to what I've read max is like 4.2GHz, these chips were all engineering samples though. I'm just happy it runs so cool!

 

[cytg111]

Would you say it is a solid upgrade from the 4690k? I have been eyeing the 5775C for quite some time.

Would be quite the disappointment to have a bad overclocker though.

If I do get it, I would also want to splurge on some ultra fast DDR3.

Solid? No.
For large values of solid.

 

[nenforcer]

Both of my parents just upgraded to Haswell based Z97 computers and in a couple of years I plan on upgrading them to both a i7 5775C and a i5 5675C and giving their current chips to my nieces. I'm hoping the price of the Broadwell 5775C and 5675C drop by then although with the Iris Pro graphics this may keep these chips in demand.

 

[Deders]

True but I hear Skylake is a dog with slow RAM.

Firstly dogs are awesome, secondly some can run very fast, thirdly Skylake is around as fast as Haswell if not faster even with slow memory. Haswell is also very fast.

I've also noticed with later bios/microcode updates, performance with AVX and FMA3 have improved according to Sisoft Sandra.

To the OP, do you mean Broadwell is faster in games if you don't have a separate GPU?

 

[coercitiv]

To the OP, do you mean Broadwell is faster in games if you don't have a separate GPU?

It can be faster in dGPU scenarios as well, although common agreement is that as long as Haswell/Skylake chips maintain a healthy clock advantage and use fast memory chips, they prove superior in games.

A worst case scenario for i7 5775C is this overclockersclub review. They used DDR3 2400 and, more importantly, their overclocked results are worrisome for i7 5775C (either they messed up the test or limited oc support kept clocks under the 4.3Ghz setting).

A best case scenario is this tech report review, with 5775C either matching or beating competition at stock clocks. Here testing platforms come with DDR3 1600 CL9 for Haswell and DDR4 2133 CL15 for Skylake. Project Cars in particular seems to really like the eDRAM goodness.

 

[Hi-Fi Man]

Got my Asus Z97-A/USB3.1 board in. OCed the i7-5775C to 4GHz with 1.22v to start off.

Cinebench R11.5
Multi: 9.14
Single: 1.91
Cinebench R15
Multi: 842
Single: 164
Cinebench R15 (i7-4770K @ 4.4GHz)
Multi: 822
Single: 165

As you can see it's faster than a 4.4GHz i7 Haswell while running at 4GHz! I plan on OCing a bit more if I have time but this chip so far seems to be a better choice than Haswell because it runs much cooler and has higher IPC.

 

[LTC8K6]

But a 4790K at stock seems to be faster than your overclocked 5775C:

11.5:
2.05
9.88

15:
181
894

http://www.anandtech.com/bench/product/1260