Ram Support - an immovable limit?

I'm thinking about building a laptop (my first ever rig), custom...
I wanted to use the PM45 chipset (or the GS45, if it were superior) because of its potential with ddr3.
But to great dismay, its stated that the intel chipsets will only support ram up to DDR3-1066 this round.
This is tragic; are we expected to wait until their next platform to make full use of DDR3?
I was wondering if I should instead choose a chipset from the current offering and install DDR3-1600s with it anyway, ignoring what its stated to support?
Is this widely done? CAN the system be stable and even take full advantage of the DDR3-1600s through some handweavery?
I obviously know nothing yet.
I'll learn soon I'm sure but right now its the acquisition of the separate parts thats on my mind.
I'm going to uni friends, help me for. I can't go alone.

 

Where are you going to get 1600mHz SODIMM? Or are you just going to start slapping desktop components into a laptop and hope it doesn't burn up?

 

No I was just going to go down to the 1066mHz SODIMM depot and ask for a 1600... *checks
edit: once it'd been released.

but, is there any magic that will allow for its effective coupling with the PM45 when that time comes?

also, what exactly does the GS45 denote? I thought it was superior to the PM45 when I last looked.
Do they stack up at all?

 

Well, 's been a good a while now with my question largely unanswered;

So I'll paraphrase it-
Should one expect failure - utilising ram of higher speed than advocated by the chipset manufacturer (even if its of admissible type, ie. SODIMM)?

what are the fundamental reasons that explain why the chipset cannot make use of ram beyond the stated threshold?

thanks guys!

 

Is Wayne Brady gonna have to, overclock to one hundred and fifty percent?

 

Its just a hard cap that the chipsets have built in. It leaves them room to make better things later and take our money then as well.

Your questions are a bit weird, or either i'm just not reading them correctly because i'm not even sure what your asking.

But i would expect that if they ever do release 1600mHz DDR3 SODIMM then yeah you can use it with the motivena chipset. It will probably down clock to 1066mHz (just like 800mHz DDR2 down clocks to 667mHz on most current laptops before the updated chipset came out) This is of course just a guess though as no ones even mentioned trying to make 1600mHz SODIMM yet.

 

Cheers Kamin!
And apologies for any idiosyncrasies in my prose manner.
I'll have to look into that - one of these days.

Would Overclocking the PM45 at 1600mHz be an option?
Is that likely with a Front Side Bus?
I don't know.

 

That would be almost a 51% overclock and I have not heard of anything near that on a notebook. But I don't follow overclock too much. My guess, not going to happen. Why is 1066Mhz that just came out not enough? I mean Intel's were stuck on 667Mhz? Seems like an improvement.

 

Thanks Pp.
I know you don't follow overclock circuits much but is a 25% overclock more likely - without excessive cooling agents? That'd permit 1333 ram, until I manage to find a portable nitrogen-based heatsink provider and push - push for 1600 mHz!

You know, I thought that DDR3 potential was the chief reason why Montevina donned the name Centrino 2. What a cheap cop out. At this point there is hardly a benefit in upgrading, at all. Poorly-made DDR3-1066 barely surmounts already cheap and dependable DDR2 667. Evidently.

 

I have done 18.75% on my Turion. A guy on these boards I think has his T8300 2.4Ghz at 2.8Ghz that is almost 17%, I think 25% might be out of reach. My reason for not going higher was not heat. It just could not be stable. I did go to 20% but too much.

 

Wait... are you trying to over clock the RAM or the actual CPU's FSB?

If you can find the PLL and aren't scared to completely destroy your laptop you can over clock the CPU's FSB...but even the smallest mistake and you pretty much fry everything.

If you're talking about over clock the ram itself... why? Your really not, and i mean this 'really not' going to notice a difference in performance. You looking at something thats going to access individual single bites of data quicker. Even if you had 6670mHz RAM your only accessing single bites at 10 times my speed...but the rest of the accessed packet of data your accessing with VERY minimal gains to speed (as in not noticeable to the human brain speeds)

DDR3's main "upgrade" is its lower power consumption. It will eventually get the same efficiency as DDR2 with low latencies, but it will use less power. Thats its key advantage. (not counting the VERY minimal speed increases)

 

The FSB.
If I do it at all it will be to attain a fequency that will sync with the ram. Currently the PM45 is at a 1:1 relationship with DDR3-1066 Ram. If a 125% overclock were possible one would then make the Front Side Bus go in at 1:1 with DDR3-1333. Which, I imagine would be quite an improvement.
I haven't though about overclocking the Ram... but actually, if I can only manage an indiscrete frequency out of the fsb, something like a 20% improvement then I may even consider keeping that setting and overclocking the original DDR3-1066 ram by 20% also, to keep everything in sync. It was Intel's idea to keep it all 1:1.
This is all of course in the far-future, when these upgrades are called upon for some power-hog application, but the possibility alone gives the Montevina platform something to offer more than its current, marginal advantage over the Santa Rosa. I reckon and hope.

 

What happens when Intel refresh their chipsets; do they touch the fsb speed when they do that?
Are they planning on refreshing the montevina chipsets? In that case I'd hope not.

In my opinion these chipsets offer a marginal advantage over the previous range:
Crestline's GM965 clocks at 800 Mhz and the DDR2-800 ram which it supports I'd say is near superior to the ddr3-1033 of the montevina system, considering price and current manufacturing standards.

 

Macleod of the Clan so we meet again! I am of the Clan Flynn.



You are mixing much. Desktop/mobile.

I think we will see RAM bandwidth increase with Montevinia. Yes 800Mhz and 1066Mhz will be close but definitely an improvement over Santa Rosa.

This refresh you mention I have heard also. I have no idea if true but it would make you think they will come out with a CPU at 1333?

From a desktop bench would look like if even close 4333MB/s would go above 6000MB/s RAM bandwidth. Here is a link. Also notice as you are concerned the difference between 800Mhz and 1066Mhz is not much. Remember Santa Rosa does not support 800Mhz and that 1066Mhz FSB does increase bandwidth even with lower clocked RAM?

 

You experience a quickening,
windows explode, lights short circuit.
"Well Done. You're immortal!"

Well the PM965 runs at 800mhz since the refresh, I believe. So that part of the Santa Rosa supports it.

That link is certainly illuminating.

Is the Montevina refresh in 2009 a sure thing?
Its becoming harder and harder to decide when to make the plunge.
Before I'd have wished to have gone to college last year. Now all I want is to forgo until Nehalem.

PS: why is it that I'm always accused of this: I don't ever recall mentioning desktop parts.

 

Only because you want the impossible.