sodimm ddr2 1066 --DOES it even exist?

But memory uses such little power in the first place that it makes no difference in real life. A different of 0.1W isn't going to do anything when your system consumes 30-40W.

 

Actually its more like multiple watts, 2W idle and 6W load:

http://www.xbitlabs.com/articles/memory/display/ddr3_13.html

As always voltage is king.

 

That's desktop, this is a notebook. I believe someone on the forum did some tests with a multimeter and showed that there is no significant difference.

 

Desktop and notebook use different boards, DDR2 240-pin vs 200-pin but aren't the SDRAM chips themselves the same?

AFAIK 1066 DDR2 exists but is still under development so a chance yet for 1066 later on but my own thoughts are as sgogeta4 regarding DDR3 becoming mainstream and DDR2 being old technology.

So why are there PC2-8500 modules for desktops then. AFAIK these are using PC2-6400 SDRAM chips overclocked by upping the voltage from the standard 1.8V to 2.2V-2.4V. These are just my own observations though so if it's not the case please let me know.

 

I see memory as similar to GPUs. Notebook GPUs (for example HD 4850) is based off of the desktop version but (I believe) they choose the cores that aren't stable at such high speeds and further undervolt and lower the core speed. Similarly with memory, they just pick those that aren't suitable for desktops and undervolt and lower the speed. While the chips are basically the same, it doesn't mean power consumption will be too.

 

Actually notebook samples tend to be of higher quality or chips that cope well at lower speeds but FAR less voltage.

How the hell do you directly compare DDR3 and DDR2 power consumption? Different machines, different chipsets etc.

 

Does any1 know if the ddr2 1066 will work with the new Dell inspiron 14's?

 

It won't run at the any faster than the current RAM, because no RAM will run faster than your motherboard tells it to. With the new Inspirons, I believe that is a maximum of 800mhz.

The only advantage I can see of putting DDR2-PC8500 in any notebook currently on the market is if you are overclocking your fsb or want to get a really low Cas latency. (Maybe if you want to undervolt as well, but, as noted previously, that doesn't safe much power.)

Future laptops, designed to run on it would be able to take advantage of the higher speeds without any tweaking. But if your designing a new laptop which requires performance RAM, you might as well use DDR3.

 

I believe the tests were run on difference machines but it doesn't matter due to how it was tested. If you have a computer with DDR2 and two sticks of memory, find the power of it at idle/load with a good/accurate multimeter or how much is drawn from the wall with Kill-o-Watt, etc. Now compare that to when you pull out one stick. That is how much 1 stick of DDR2 consumes. Try that on the respective DDR3 machine and now you have the power consumption of each. Obviously the biggest difference is during load but I don't believe it to be significant on most notebooks (except maybe certain ultraportables)

There is no such thing as DDR2-1066 for notebooks. Even if it there was, it would downclock (unless you can OC the inspiron).

 

moral hazard how did you get your ram to overclock, everyone else here seems to be saying that the chipset will always downclock your ram?

So if the chipset is going to limit your rams clock speed then the onyl soloution seems to be the one mentioned by 0.0
and that is to flash your ram to make it apear as a lower rated frequency, this way the chipset will allow the overclocking of the FSB.
Now its a question of how flash your memory...and more importantly how to flash it safely...

 

Some notebooks don't let you overclock, some do. What is your notebook? Do you know if people have successfully overclocked that model? Only at stock speeds would it downclock (the default configuration).

 

Im a little confused...everything on my lappy is already running at stock speeds, i havent modified anything yet.
The only think hp owners seem to talk about is overclockin the graphics card, i have yet to see a thread about overclocking the processessor.

 

I use setfsb to overclock my FSB, when you overclock your fsb your ram and CPU get overclocked.

Use spdtool or Thaiphoon burner to flash the spd table of your ram.
Those tools will even let you change the voltage, but to be safe do not change the voltage.

 

To be clear here: flashing the RAM will not in itself allow the FSB (and hence the CPU) to be overclocked. It is merely being proposed as a way to allow for even higher overclocking of the fsb for those who are already able to do that.

For example, I had a Dell Inspiron 1520 for about a year and could never find a way to overclock the cpu, hence there was no reason for me to fiddle with the RAM.

 

I think pretty much people talking rubbish here ...
What they never tried it and saying about it like they did it ...

 

I have tried it, but with my older ram sticks.

I can't flash my current ram with spdtool, I think the spd is read-only on my current ram.

anyway, look at my sig for proof that I can overclock my FSB with setfsb ( I even got the world record for the T7300).

So who is talking rubbish?

 

Interesting discussion ... did anyone answer the original question:

I don't think so ...

 

nteresting discussion ... did anyone answer the original question:
look some my posts back

 

That CPU must be on the edge of frying then..
how coolning looks like same orig or aditional

 

with original cooling @2.8ghz it goes to ~94C max

very very very hot. I usually run it @ 2.5ghz and it's ~78C max.

I am going to try to install a small 5V 6mm thick blower fan (connect it directly to usb power), hopefully get it a bit cooler.

The only reason I wan't 1066mhz ram is to find where my CPU is unstable.
right now my system becomes unstable because the 800mhz ram is running over 880mhz. I BSOD when I put the FSB past ~262mhz. The BSOD does say its a memory problem so I know my CPU can go further (not much further though, but I still want to see how high it will go).

hopefully there will be some 1066mhz DDR2 in the future.

Edit: If anyone knows how to "unlock" the SPD on ram to let it be flashed with spdtool please let me know. I'm happy to modify the stick phisicaly. Also it seems all of my samsung ram is the same (as in it all doesn't let me flash it's SPD). Is this something only samsung does?

 

I think there is a good chance in seeing 1066mhz DDR2 right now 4gb modules for 800mhz are dropping in price so introduction of 1066 mhz modules hopefully is next step

 

Doubt you will ever see DDR2-1066 SODIMMs since no platform officially supports it and I don't know if the next generation platforms will still support DDR2.

 

ok I found it:
http://www.alibaba.com/product-gs/2...Channel_Notebook_Memory_Upgrade_2x2048MB.html

I don't know if it's a misstake or fake but I found it.

 

It's really a DDR2 1066Mhz RAM module. See HyperX Kingston DDR2 RAM. They even have 1150Mhz RAM.

 

I'm in the same fix with my Hyundai RAM--I've gotten it a shade past 1050mhz before BSOD. (See my sig.) It might have to do with the platform?

That is desktop RAM as Nando notes. A shame really, but manufacturers have no good reason to keep producing better DDR2 SODIMM kits when DDR3 is here now.
I will financially support anyone who does though. ;-)
(Hint to Kingston et al.)

 

Yes there is but ONLY for Desktops
I think DDR2 will be with us couple years longer because manuf. they know people have laptops and desktop they support ddr2 and memory can be expandable some normal people don't bother about some speed they see only 2GB 3GB 4GB 6Gb 8GB most people when see bigger number is better ...

 

Kingston_Apple_4GB PC8500_1066MHz DDR2 SODIMM Dual Channel Notebook Memory Upgrade - 2x2048MB


EDIT: Above is a advertising mistake. It's DDR3 RAM!!

 

+rep for you nando,
any chance you can find 4gb sticks of 1066mhz DDR2 sodimm ram?

Edit: Also would 1066mhz ram work with the santa rosa chipset?

 

please are you silly or what ? that's ddr3
get that bloody model number and go check it out on kingston web ... or check questions and answers from that link what u tried to show me ..
some amateur sitty websity some clowns running that company !
omg some tigerdirect idi..
looks like that neww egg is most honest market in usa !!
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2003340551%2050001183%201328144991&name=DDR3%201066%20%28PC8500%29

 

It won't work on stock. It will downclock to half speed, 533MHz, unless you can somehow do mad overclock or change the divider for FSB.

 

thanks, I do want it to downclock (although it should downclock to 667mhz).

And yes I am overclocking my FSB.
that is why I need the ram (my current ram is becoming unstable with a high OC).

 

1066mhz RAM will work fine on Montevina or Santa Rosa, as long as it's 200-pin DDR2.

Your mobo will only run it at 667 or 800mhz though. But that's exactly what we want! The idea is to get RAM with lots of head room so that we can push the FSB super-high without crashing the memory.

 

1066mhz RAM will NOT definetly work as long as it's 200-pin DDR2
my god, people do you have any knowledge? or saying things to the air only?
Yes that's true 1066 MHz will work on on Montevina or Santa Rosa ,as long as is 204 pin DDR3 will work 1066-MHz!
take a look on spd

 

If somebody interested
just read and learn
http://en.wikipedia.org/wiki/SODIMM
please read whole article

 

that was written in 2008, maybe they have 1066mhz DDR2 sodimm now?
Or maybe soon?

Is there any hope?


On a side note:
I have been overclocking with both my 2gb 800mhz sticks inside.
maybe if I try them one by one, then one of the sticks could take a higher OC than the other.

I have a chance

 

HI
that was written in 2008, maybe they have 1066mhz DDR2 sodimm now?
Or maybe soon?
Is there any hope?

No they will not be faffing around manuf. with ddr-2 anymore ..
In 2012 comin up DDR-4 first of course desktops then laptops

 

how hard is it to put some 1066mhz chips onto DDR2 ram?

 

They will not do it because of simple reason
beause manuf. shuttering your eyes with logo : DDR2 and DDR3
what point will be DDR2-1066 and DDR3-1066
If they will do that that will be total nonsense there will be no difference only in pins ...
People just seeing (ddr1 ddr2 ddr3 ddr4) numbers they going higher and higher and that is best manuf. weapon for customers..

 

ok, that makes sense.

It's too bad though.

 

Perhaps what they mean there is that the PC2-8500 currently used for desktops is really DDR2 800 chips overvolted from 1.8V to ~2.3V to let them run overclocked at 1066MHz effective. Since desktop modules usually have the chips spaced out and have a heat sink to provide extra cooling this is okay for them but notebooks with there denser grouping and no or little room for decent heat sink probably cannot accommodate the overhead.

As far as true PC2-8500 chips they already exist as engineering samples but have not made it to manufacturing production and possibly never will. Only time will tell and IMO probably whether or not the desktop market warrants it. Even then they may not be made available as SO-DIMM modules due to a too small market. Time will tell.

Just to try and make it clear what is hoped to be achieved here I have two PC2-6400 SO-DIMM's in which I have changed the SPD EEProm data to tell the BIOS it's PC2-5300. Because the BIOS believes this it changes the BUS divider to 4:5 which with a 266MHz clock would normally give a 333MHz RAM clock or 667MHz effective but because I'm really running a 333MHz BUS the actual RAM clock is 416MHz or 830MHz effective which is great for what is truely PC2-6400 memory.

Now if I didn't do this the BIOS would use a 2:3 divider which at 266MHz BUS would give a 400MHz or 800MHz effective RAM clock but because I'm running at a 333MHz BUS (the notebook still thinks its at 266MHz) I get a 500MHz or 1GHz effective clock which is too fast for the standard PC2-6400. If we had real PC2-8500 SO-DIMMS then the BIOS might at worse spit the dummy or best down clock for 800MHz in which case the PC2-8500 would be actually running at 1000MHz effective instead of 800MHz because of the overclock, with room for overclocking further.

 

I know there are ddr3 667 and 800 like ddr2
as far as I know they been or they going to be discontinued
and last thing the most main difference is that ddr3 now using higher voltage to achieve higher bandwidth so higher frequency
When you overclocking you bringing higher voltage to your chips and they have limited space what they can resist until it burn..
so if you really want make such a big frequency within voltage what is for ddr2 the modules chips will be melted

 

0.0
I completly agree with you
the BIOS is the the main center where you can adjust these elements such a voltages, frequencies..
BUT only in desktops motherboards have completly all features unlocked so there is no problem to overclock or downclock ..
but of course laptop users have limited bios features TO PREVENT some ''fukups'' with overclocking and that is why programers developing in OS features to enter in the BIOS software way ..
EXACTLY like you said because laptop users are unable to attach new mega heat sink water cooling coling bars on memory ETC there is no room
laptop users mostly things they can manipulate with laptops same like with desktops but they should realise this is laptop smaller and sensitive ..
I never overclocked any computer
I know what is voltage bandwidth and frequency and calibrating but for me is no point to do it ...

 

Ofc the cooling is smaller but with a mixture of OCing/undervolting you can get more performance for the same or less heat. Changing ram/timings gave me another 5% CPU performance for 0 extra power too.

 

I'm not sure from your grammar where you are disagreeing with me. This thread is devoted to the question of DDR2-PC8500 which would most likely be exclusively 200-pin.

DDR3 RAM which your notebook seems to support comes in different flavors--204-pin being the most common. And we all know that there is 1066mhz DDR3 for notebooks. I'm afraid that's beside the point though.

 

Brilliant! I tried this somewhat halfheartedly, and couldn't find a way to change the EEProm data. How did you manage it?

Also, interesting to hear about the engineering samples.

 

A-DATA SODIMM DDR2 1066 2X2GB 128MX8 CL5

Thats the kit i have, and its true that PM965 chipset downclocks it to 667Mhz but it will give nice overclocking headroom .

Aviability for that a-data kit is kind of poor.

 

Do you have a part number? A-Data has no DDR2-1067 on their website, so is it a mislabel?

 

Wow, look what I found:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134973&Tpk=ddr2 so-dimm 900

Kingston 4GB 200-Pin DDR2 SO-DIMM Unbuffered DDR2 900(PC2 7200) System Specific Memory Model KTT800D2/4G

And it's $200. Not to bad for a 4gb stick.

 

Centrino 2 is not a processor. Any RAM you get labled as 1066MHz will downclock to the max supported speed your platform and CPU will support. I don't see why they would make DDR2 RAM when the majority of DDR2 is used in notebooks that do not use the full RAM clock to advantage.

 

That's not completely true! There is at least one motherboard supporting (with a right AMD CPU though) SODIMM DDR2-1066 and I happened to have one... ((
http://www.jwele.com/motherboard_detail.php?419#_spec

I'm considering to try this memory: http://www.newegg.com/Product/Product.aspx?Item=N82E16820104148
and going to put it to 1066 mode (CL6).

BTW, I'm wondering if the CL4 is in its SPD? It supposed to be I believe!