Haswell 4800mq and DDR3-1866

I've got a laptop all spec'd out for order with a 780m / 4800mq. However, I like to tinker with RAMDisks and use them as a supersmall high-speed storage base. Can haswell 4800mq handle 16GB DDR3-1866 (or even 32GB of such, since Kingston announced DDR3-1866 SODIMMS DDR3-1866 16GB SODIMM KIT). I know for other stuff it's frivolous, but for ramdisks, all that speed is a good thing.

Thanks

Jason

 

Only if it is 1.35V. I could risk with 1.5 but... who knows.

 

this

Jason

 

You may not want 1,35V in 8GB sticks.

Starting at post #324 through #330
http://forum.notebookreview.com/sager-clevo-reviews-owners-lounges/715556-official-clevo-w230st-sager-np7330-owners-lounge-33.html#post9285457

 

And stiill mythlogic puts LV Patiot RAM, right?
It was his own thoughts. If you by ram and it fails to work as staed then just give back.

 

my current laptop (see sig) has 4x8GB DDR3-1600 1.5V SODIMMS.

Why are clevos so picky with 8GB SODIMMS? You'd think it'd be better for the computer to have 1.35v, no?

 

It's true, all the memories have lifetime warranty, if they fail to be compatible I imagine the manufacture would exchange for one that is. FWIW I think all 1.35v ram is dual mode, meaning it can be 1.5v but might require bios mod to force it to run that.

I also am interested though if these systems would run the 1866. I imagine they would given some Sandy Bridge users ran 1866??

Guess we have to wait for someone to try. You can always return it I guess.
Funny, I was just about the order the 16gb of 1600 LV ram they got and now have to think about this one.
I suspect one of the issues with clevo, as is common is high density dims and also having all slots populated.
I had many desktop boards that ran great with 2 out of 4 dims full, second I filled the others it became the voltage game to make it stable.

So probably with 2x8GB of DDR3L we are fine but 4x8GB of the LV might cause some issues but only time will tell.

I am on a later rev MB 3.5A so maybe it will work better. The slots do say 3.5v though, but not sure if all LV systems list only the high/standard voltage.

One would think LV would be better but it is and isn't.
Is better as less power and less heat and load, but also risk being on that line where things are not stable and normally a slight voltage bump would help (as was always case on my desktops lol).

 

Yes, they use Patriot low voltage but only in 4GB sticks 2x4GB or 4x4GB

 

Mythlogic offers 1866 in 4GB sticks 2x4GB and 4x4GB No 8GB sticks are listed in configurator.

HTWingNut is running 2x8GB Kingston HyperX 2133 in his Sager NP7330 (W230ST) From his review:

http://forum.notebookreview.com/sager-clevo-reviews-owners-lounges/725922-htwingnuts-sager-np7330-clevo-w230st-review.html

 

True that faster RAM does not give much performance. From 1 to 5% where 5 goes to archievators. However many people including myself DID tell that it gives better snappiness and responsivness... However it was on Sandybridge while more performance has CPU more juice it gets from RAM so perhaps you will feel close to maximum snappiness already with 4800MQ.

Iyv Bridge CPUs easily support 2133 or even higher (with FSB OC). Even it is possible that 2720QM works with 2133. But nothing ill support if BIOS has limitations on RAM frequency like some Sony VAIO does.

And again. You can put 1.5V but it is a risk. Haswell's official tech specs tell only about 1.35V support. It can be just marketing however still some chance that not just marketing. 1 guy said that if it really could fry your cpu or mobo because of 1.5V then WARNINGS would be everywhere. So basically I could risk if I had.

 

Don't see how 1.5V would fry anything. That is the default memory they all com with, not to mention my MB which is the latest 3.5A rev actually shows 1.5v by every slot with no mention of 1.35v.

From what I have found just about any system that took 1.35v could do 1.5v fine anyway, including the mac's (which are nothing special lol).

That said I don't think either way will hurt anything and that while mythlogic had some issues maybe with 8gb 1.35v dimm that with these newer models that may be a bit more rare. Now if 16Gb is your planned limit I would personally try the 2x8 and if no issues great, if you do you can always go to 4x4. It's also possible the issue was related to the early rev MB, having a later one like 3.4 or 3.5 might have fixed any issues.

This is prob like the 2nd mSATA. It was known to have issues but many sold the systems with the option to use them. It's hit or miss on how things will work. Nothing is perfect.

 

My W230ST with i7-4800MQ runs my Kingston 2x4GB 2133 @ 1866 just fine.

 

Figured it would run the 1866 fine.

I'll prob order me the 2x8GB 1866 @ 1.35v given I can get it for 147 and the 1600 is the same price lol. Can always return it if fails I guess. I just am kind of in that toss up now. 1600MHz CL9 1.35v VS. 1866MHz CL11 1.35v that whole CL vs. MHz fun lol

Any interested in memory specs

http://www.kingston.com/datasheets/KHX18LS11P1K2_16.pdf -1866MHz
http://www.kingston.com/datasheets/KHX16LS9P1K2_16.pdf - 1600MHz

Oh and the prices are @ buy.com both cost $147 which seems to be best price I have seen.

 

I am still dying to test out my sammy modules with a better mem controller but for the same cost 1866 is fine but it wont have a real impact over the 1600.

1866/11 = 170
1600/9 = 177

So there is a 4.5% rough difference in latencies but the 1866 has more bandwidth making it a wash.

 

Just to be sure, has anyone confirmed that a double 16GB kit does work with Haswell Quads?

32GB on a slim machine like the W740SU sounds like a good deal to me.

 

Operating system? Windows 7 Home Premium, 16GB max, I believe. 7 Pro, Ultimate 32GB no problem. Windows 8 no problem. Haswell Quads no problem.

Package options of desktop and mobile Haswell processors

 

W740SU only has two RAM slots.

 

Only the 15.6" models and up can have 4 slots.

 

Yeah I kind of figured close to a wash too but I also noticed on the spec sheets that
1866: Row Cycle Time (tRCmin) 47.91ns (min.) & Row Active Time (tRASmin) 32ns (min.)
vs
1600: Row Cycle Time (tRCmin) 48.125ns (min.) & Row Active Time (tRASmin) 33.75ns (min.)

So looks like the 1866 beats on a few of the other specs too.

That aside both the 1866 & 1600 are the exact same price so wouldn't the faster be better anyway? The 15%+ bandwidth difference I would think help make up for the 4.5% latency difference some. So long as they are not slower or even I am happy, I mean after all was going to buy the 1600 anyway until these popped up and being same price why not hah.

I personally think 32GB is overkill. On my old P150HM I had 16GB and even ran VM's and had always over 5GB to spare with most times closer to 8 and that was with dedicated ram for the VM lol.
VM's are getting more efficient and dynamic on the memory usage now days though so really can't think of many reasons to need so much. Esp on a light weight smaller laptop.

I am happy I will have 16GB still, now will be faster when my 1866 gets in and 2 less dims which also are lower volt so hopefully a little decent power savings and less load on things.

I do some IT consulting on the side and build small businesses servers that run all kinds of stuff and only generally give them between 16-32GB of ram so short of doing something ram dependent or using RAM disk save the money I imagine most with 16GB hardly use half even and it's more of a feel good or brag factor lol

I always love when I am playing BF3 and talking to some people and they get excited and think them adding more memory helps. I ask them to look at usage while game is running and everything else and they come back "Oh, only 6GB total with the game running and other apps.." and feel silly they have so much wasted and sitting.

Oh well, to each his/her own.

 

It's all a wash in the end but the 1866mhz will be a touch faster, but it would be impossible to tell the two apart in identical machines running next to each other.

 

Oops. Didn't realize it was "16GB kit", not "16GB stick".

Any hope for 204pin 16GB singe stick in the near future?


To those questioning if 32GB is an overkill, I fight RAM capacity limitations all the time... on clusters...

 

Yea but we are talking about laptops how many people on a laptop with 16GB have capacity issues? Probably 0.5% lol
Just trying to save people money though. People should check usage when doing the most demanding things to determine if they need additional memory.

Looks like my 16GB kit will be here Thursday. Hopefully it places nice together on these new systems.

 

Anyone using their laptop as a cluster needs their head examined lol.

 

I (geophysicist & geologist) work in the field very often, in which case the big clusters are not available. I need to squeeze as much performance as possible from my notebook in order to perform on-site analysis.

 

Then something like the 9570 paired with one of the soon to be released IVY-E chips with quad channel memory would suit that much better.

When you said cluster I had images of racks of notebooks, using a single device is not really a cluster.

 

My company does have a few P570s for field use.

There are some cases when the RAM capacity is the primary bottleneck. The ALU workload isn't high but I need a lot of RAM to hold the data set for quick random access.

PCIe cache drives, where are you?

 

You could could set a raid array of SSDs as a cache space depending on the program features.

 

I found some 8GB SODIMM that are 1866MHz & CL10 but looks to be XMP only
BLS2K8G3N18AES4

I really wish Clevo didn't limit us 15"er's.. The chipset and all support it yet they lock down the bios soo much and don't even give OEM's options really. The builders that have more options have manually modded the bios files themselves which is technically unsupported by Clevo but doesn't really matter much.

Is it so much to want a bios with every option accessible? lol If I want to break it and screw it up that's on me... but they lock it down to try to limit support issues with inexperienced users. bahh

 

Does XTU run? I know it has some XMP memory options on the previous models.

 

Yup, but nothing as it relates to memory.

 

where did you find this mem??
I wished that MSI can use this XMP mem

 

The 1866MHz CL10 XMP? Look for BLS2K8G3N18AES4 but newegg and amazon both have it.

The Kingston 1866MHz is CL11 but PnP and a bit cheaper. It can be found for $147 or you can get the 1600MHz CL9 for same price also (using the info in a previous post by me.)

The XMP one is by Crucial and seems to be about $160.. If it was PnP I would be all over it.

 

Yea I saw it on amazon.com, nice mems.
but what is the difference between XMP and PNP?
I don't know if XMP is compatible with my MSI??
Right now im using CORSAIR VEGEANCE 8GB 1600MHZ CL9.
When I open the XTU-at the memory section- it says: profile 1:XMP-1867MHZ
When I click on this profile it reboot but it freezes when restart
ALSO on CPU-Z says that XMP-1867MHZ its 1.6v that why its freezes.
Now with this memory (Crusial)on 1.35v I don't think it will be a problem.... right?

 

You could try editing the XMP profile of your current memory to find out.

 

I try to edit the timings at 11-11-11 32 x14multiplier- because the XMP PROFILE-1867mhz IS AT 10-10-10 32.
No luck...freezing.
I think that crusial mem will work because its 1.35v and not 1.60v

 

It sounds like your system does support XMP but could be freezing for any number of reasons to faulty ram (meaning it won't run at spec speed) to your MB/CPU can't handle the increase/voltages for some reason.

That said while this memory is 1.35v all 1.35v memory is required to also work at 1.5v so you probably would be fine using it. You can always return it if any issues.

The difference between PnP and XMP is that PnP is just that, plug and play. So long as the system supports the speed it will automatically run at the advertised rates.

XMP is a bit more user reliant in that it requires the user to pick the profile and allows them the option to modify the timings. Basically XMP is more for overclockers and tweakers and PnP is for those that just want it to work. Now that's not to say one is worse vs. another just some systems don't support XMP. (The memory would actually work in them just they wouldn't get to pick the nice fast speeds.) In our case, the systems support it but Clevo was mean and disabled/locked it out on some models

 

I've memtested (memtest86+; was going to try regular memtest86 but was too lazy) my 4x8GB DRR3 1600MHz 1.35v sticks and it came out fine. It was only 1 pass though... I'm returning my laptop for a NP8255.

Memtest86+ read my timings all weird though. Memtest86+ hasn't been updated in a while, so I think it's just a bug.

 

Just installed my Kingston PnP 2x8GB 1866MHz modules and so far so good.

Running at 931.2MHz each @ 11-11-11-32 1T & 1.28v

I suspect another 16GB for 32GB total would probably be fine but would guess it would probably change to 2T instead of 1 and TBH 16GB is almost overkill plus less chance of stability issue @ only 2 dimms. My old laptop was 4x4 1600MHz and I never saw it use anything above 10GB even with VMs and battlefield 3 running at same time lol

I am happy so long as it stays working good my WEI went from 7.9 to 8.1 on the memory, not that WEI is useful for much lol

I wish it had the CL of the crucial sticks but those are XMP and not that one would notice much performance difference. The CL in these are the same as the stock memory anyway so I think all around I gained by the extra MHz and lower power demand.