Overclocking P770ZM or P771ZM

Hi guys!
I'm considering a Clevo P77xZM based system with an Intel Core i7-4790K.
The mainboard chipset is an Intel Z97.
What should I do in order to overclock the 4790K safely?
What RAM should I buy? According to Intel[1] the 4790K was made to run on DDR3-1333/1600.
The mainboard though uses DDR3L SO-DIMM. Yes, that's a desktop CPU on a laptop mainboard.
Will I benefit using a faster memory (DDR3L 1866MHz or 2133MHz)? How much faster will the system get? Any benchmarks?
What temperatures should I expect? Will it meltdown the chassis?

[1] Intel® Core™ i7-4790K Processor (8M Cache, up to 4.40 GHz)

 

hey there!

posting this question in the owner´s lounge is sure to get u way more responses from like-minded people

but here goes:

first of all, congratz, great choice indeed for a machine

you can use intel xtu to oc the 4790K, thatll give u total control over base/boost clocks, voltages, tdp values, etc. just make sure u repaste properly using a high-perf. TIM and maybe consider delidding the cpu and exchanging the TIM between the core and the IHS (but thats rather something for advanced users with balls of steel )

the 1333/1600 is just the intel official spec, that doesnt mean that the integrated memory controller (IMC) of that cpu cant handle more than that. 1866 mhz will be for sure, 2133 mhz still very likely and above that it depends from chip to chip (= "silicon lottery" ) and yes, ull need to get urself DDR3L SO-DIMMs for that system. also be sure to get sticks that are able to handle those kinds of speeds. the fastest available stock speeds are at 2133 mhz and are offered by kingston, corsair and g.skill afaik.

it depends on what kind of applications ure talking about. if, which i am assuming, ure talking about gaming, then ull see about a 2-5% increase in performance going from 1600 to 2133 mhz, in some games more, in others less.

cheers

 

You sure DDR3-L sticks are needed? I thought DDR3 would also work since this is a desktop processor with a Z97 chipset.. Thought DDR3-L was only required by Haswell mobile?

 

its more of a question if the mobo itself supports it. true we have a desktop cpu but the mobo is designed for mobile sodimm sticks...besides, all the current highperf sodimm sticks are ddr3l anyways, so might as well just go with them

 

Thank you! :thumbsup:
I didn't buy it yet. I'm RFP at the moment. What's the best TIM btw? AVAdirect list so many options but just with brand names and no info on how they differentiate.
Will XTU adjust the response curve of the fan controller or should I do it manually?
What I mean by "how much faster" was the data transfer rate (GB/s). Then I remembered I can calculate it myself.
Considering you've mentioned an increase from 1600Mhz to 2133MHz the gain would "theoretically" be of approximately 33% (from 12.8GB/s up to 17.1GB/s -- peak data transfer rates).
I think it's well worth it!!!

 

I don't know. I just copied what I read at the reseller's specifications webpage.
Do you think I can use the regular DDR3 SO-DIMMs on the P771ZM?

 

1866mhz has the best safety/performance/usability ratio in my opinion.

Regarding TIM i always use IC 7 (or ic 24 that's the same) : very good temps, easy to use, and short "burn-in" period. You have other good TIM of course (gelid extreme 2, etc) but always had good result with the IC 7

 

Gelid or noctua for Tim. Arctic silver is middle of the road but probably the easiest to apply and good start for beginners before they step up to a better paste but more challenging to apply.

 

I've never tried Gelid or Noctua. Why are they more difficult to use?

 

Top tier TIMs include IC Diamond 7/24, Gelid GC Extreme, Noctua NT-H1 and Coollaboratory Liquid Pro / Liquid Ultra. The last two are metal based TIMs, basically liquid metal, thats why its more difficult to apply those. Also, some TIMs have a very high viscosity, so its hard to properly dose and apply them...

Newer Clevo models have the inbuilt option to adjust fan profiles, but only according to CPU temps, not GPU. otherwise, the EC (embedded controller) will take care of that with a pre-programmed fan profile.

well sure, just running the naked throughput numbers gives you an impressive difference between different RAM clocks, but Id rather say it makes more sense to check what ull get in real life performance generally, RAM is best regarded as the last option to overclock / upgrade in a system that has otherwise be already been maxed out, since it only gives you a few % points of extra performance at best.

 

If you do get access to 1.5v with an unlocked bios then the 1.35 sticks should overclock a fair bit at that point.

 

thicker and harder to spread. i forgot how hard the noctua is, but the gelid is one of those it's best to put the tube in warm water. arctic silver, any method is easy. spread with card, pea drop, cross. gelid and shin etsu are a pain to spread with a card, even after warming with water. i usually just put a big pea sized drop and spread it with my heatsink in small circular motions until i see a little ooze out the sides.

 

Thank you all for the information and tips! :thumbsup:

 

Does any knows or can post some battery benchmarks for the P770ZM/P771ZM?

 

Is anyone having power supply issues when overclocking the P77xZM with the 4790K?
Is it really needed to have a 330W power adapter?
What about that 2x 330W power adapter with converter box?

 

2x 330W is overkill

 

yep, totally agree. how would one ever reach close to 660W with ONE gpu and ONE cpu?

 

Kerosene and a match?

 

Do you really want to test me with a delidded, CLU'd IHS, CLU on top IHS i7-4790K and CLU'd 980M with a modded vBIOS, a custom notepal U3 and some copper pins and a modified backplate to allow proper airflow? =D? I bet I can beat a 330W brick =D =D =D.

 

was actually talking about beating TWO of those beating one shouldnt be impossible especially not with LN2 around *mwahaha*

 

Listen, don't underestimate how cool Maxwell is and how much power that thing drinks when it's OC'd. They far outpace the 780Ms under a hefty OC in terms of power draw. I'm sure I could at least make 500W power drain with a single CPU and single GPU and the setup I listed.

 

How would you pinmod a 4790K for overclocking?

 

I've found them more frugal than my 780m cards. I had them up at 660-680w from the wall.

 

youre on eagerly waiting for your power draw data

 

Feel free to send me a machine XD.

 

Lol pinmod? Dude this isn't the Core 2 duo/1st gen i7 ERA... XTU lets you bump voltage up by quite a bit and unlocked multipliers mean that on the whole, pinmodding is null and void..

 

I don't think he meant copper pins in that way

 

Guess I was wrong. What "copper pins" means?
Would it be something like this[1] heat sink?

[1] http://i00.i.aliimg.com/photo/v4/623860104/Copper_pin_fin_heat_sink_for_cpu.jpg

 

Ahh you mean copper heatsink mod lol...

 

Is it possible to connect two Samsung XP941 to the P77xZM?
Will both work as PCIe x4 or will it switch to PCIe x2?

 

Slot two only support PCIe x2, just slot 1 is x4.

 

So, two Samsung XP941 would be working in x4 and x2?

 

depends. if u RAID them, theyll both be in x2 mode, if u have them as separate drives, they should be running at x4 and x2, respectively. not 100% sure though

 

Not 100% sure either but that sounds correct. You would not be taking advantage of the full speeds the XP941 can do in a x2 slot, that is why Sager does not offer it for that slot.

 

From my understanding, only 4 lanes available total. I could be wrong though.

 

I was thinking that too, but it appears to be different depending on the model.

For the NP8651/NP8671 its listed as:
Two M.2 2280 SSD (RAID 0/1 support), SATA interface or One M.2 2280 SSD, PCIe Gen2 x2/x4 interface.
Three M.2 Card Slots
- 1st for WLAN Combo M.2 2230 Card with PCIe and USB interface
- 2nd for SSD M.2 2280 Card with SATA / PCIe Gen2 x2/x4 interface
- 3rd for SSD M.2 2280 Card with SATA interface

But for the NP9752/NP9772 its listed as:
Two M.2 2280 SSD (RAID 0/1 support), SATA interface or Two M.2 2280 SSD, PCIe interface
Three M.2 Card Slots
- 1st for WLAN Combo M.2 2230 Card with PCIe and USB interface
- 2nd for SSD M.2 2280 Card with SATA / PCIe x2/x4 interface
- 3rd for SSD M.2 2280 Card with SATA / PCIe x2 interface