Can alienware m17xr2 support 1866MHz ram?

mine have intel core i7 740QM.Can it support 1866MHz ram?

i recently upgraded my alienware m17xr2 to 16GB 1600MHz.
Why is that the system only shows the DRAM frequency at 665.1MHz instead of 1600MHz.
Is there any problem with the ram or it jz some reading problem?

http://img694.imageshack.us/img694/706/84723250.jpg

 

There is no reading problem, the M17x R2 supports memory up to 1333Mhz, that's 2x ~667Mhz.
Your 1600Mhz sticks are getting downclocked to 1333Mhz which means they are running properly, nothing to worry about here.

No, as above, the M17x R2 supports up to 1333Mhz (2x ~667Mhz).

 

question is your bios showing ram? because i also have same model 2 slots with 16gb kit but on windows it shows 16 in bios 0. also my windows load if i shut down then turn on but restart i get num lock flash with black screen

 

The fact in BIOS you see 0 is normal, there weren't any 8Gb sticks when it was written so it's missing those lines.
Also, is NUM lock the only one flashing, are the other two off? Try to reseat the modules.

 

you mean turning of laptop and reinstall ram? other 2 are on and caps keeps blinking.

 

If Caps Lock is the one blinking, that's a different error code.
Yes, turn off your laptop, unplug the charger and the system battery.
Unscrew the back plate and reseat the RAM modules.

Perform a power drain by:
- unplugging the CMOS coincell battery (near the system fan)
- and press the power button for ~30 seconds

Put everything back together, enter BIOS and reset time and date along with other settings you might want (RAID if any, etc.)
See if you get the same error.

 

during perform a power drain do i unplug the power cord and main battery?

 

Yes, very important to do so!
And always disconnect any power source before disassembling any electronic device (unless you REALLY know what you're doing).

 

Now I get missing operation system error

Ok I did the reset an raid but I still get caps blinking

 

What is the pattern of the flashing? Look here for clues: Alienware M17x R1, R2 and M15x LED Behavior Prior to Proceeding with No POST troubleshooting

 

what can i make so that my lappy detect 1600MHz instead of 1333MHz?

 

What can i make so that my lappy detect 1600MHz instead of 1333MHz?

 

Absolutely nothing, it is not possible. Your machine does not support 1600MHz at all, so it will always only detect it as 1333MHz.

 

So the only thing left is upgrading my processor ain't it?
Will core i7 920XM or 940XM support it?

 

Nope. The chipset on your motherboard does not allow for ram to clock faster than 1333MHz.

 

Not sure if the original poster understands all the answers correctly or the responders understand the question properly
Yes, the 920XM and the 940XM will support the R2, but only @1333MHZ

 

The only Way to get the Ram to 1600MHz is FSB overclocking.
I got mine from 1333MHz to 1500MHz, but anything further causes instability.

 

What did you use to oc you fsb to this range?

 

I used freeware SetFSB's tool "PLL Diagnosis" and BIOS overclocking.
I figured out that all you need to change are the 000F and 1000 values for overclocking.
I can make a guide if enough interest.

I dont know if the limit is CPU or RAM sided, i had kingston ram once that went from 1333 to 1600 wihout a hitch.
I really doubt that HyperX wouldnt overclock as good too. So i blame the CPU

 

1) Are u telling me all the alienware m17xr2 users who hardly upgrade their processor to 920XM /940XM and expensive ram are only capable to handle up to 1333MHz?whoa..i kinda shock.
2) So then no meaning to have ram up to 1600MHz in alienware m17xr2 ?since it will downclocked to 1333MHz although the person bought 1600Mhz ram?
3) Since it can only run at 1333MHz in alienware m17xr2, what can i do to make the ram run great at this frequency?buying good brand?Will it make any difference in performance?

 

Well this is related to a few things:

1. The XM (OEM) cpu's can be insanly expansive, but are capped at 1333Mhz (Stock)
2. The speed of the RAM is not what games benefit from the most, it's the latency, but to answer the question, yes it will always downclock to what memory controller supports.
3. Your games will run perfect on the this speed, you system must use high clockspeeds (where possible)

Most game titles use the power of the GPU, not the CPU....with an exception of a few titles like BF3 and Crysis and so on

 

Thanks bro.
In the mean time, i'm thinking to overclock the ram.

Can u make some guide bro on how to use the SetFSB's tool "PLL Diagnosis" and BIOS overclocking.

 

Sure, i'll do it when i come back from work.

 

Thanks bro~ :smile:

 

This should be good .
I wonder what mem speeds i can get with these.
I know that the 5% OC from the unlocked bios will do nothing with all non XM cpu's.

Also be sure to incorperate the "fix" for people who adjusted their fonts size that wont be able to anything in SETFSB.

Gl man

This might give you/us a head start.
This does not really explain whats what, so maybe you can help us out with that.

 

Thanks unphoto i haven't been making any guides yet, so that really does help me a bit
The mem speeds will probably be around 1450MHz - 1650MHz. (Mine is at 1500)

Haven't had the bug yet, so i dont really know what you mean by that.
I'll look into it however.

 

I ment the part that, when you have changed your windows default font size, you will mess up the visual template for the characters in SETFSB.
It will remove the characters from the screen but in reality they are still there but the window can't show them.
If the screen remains blanc, just set you personal font size back to default and whoalaaaaa


EDIT:
Wait what?
"The mem speeds will probably be around 1450MHz - 1650MHz. (Mine is at 1500)"
What manor of OC sorcery is this?
you are volting the cpu and the mem?

Show us your settings!!!!!!!!!

EDIT No.2:
Ah nvm, since i am still using the I7 620m, the memory control does not support over 1066 .
i have to wait until i get my 920xm....

 

I'm running FSB @ 150MHz, and since the memory is linked to it 2:10, that results in 750MHz on memory (1500MHz because it's double data rate)
Havent raised the voltage in BIOS yet. I will when i get some time but i doubt i can push the FSB any further. 152MHz is the limit, 150MHz stable 24/7.

And here is the guide as promised
http://forum.notebookreview.com/alienware-m17x/711130-how-oc-m17x-r2-cpu-using-freeware-setfsb.html

 

hi i also have this problem, can't reboot, other works fine. mine is hyperx PnP 16G, does it help or it was know that hyperx doesn't work for 17x R2 ?

 

If you are using 4 sticks to get 16GB that will put a lot of stress on the IMC.

 

Does it boot with one stick only? Have you tried resetting the CMOS?

He can't use four sticks as the M17x R2 only has two memory slots. The only possible configuration, as of today, of having 16Gb in the M17x/M17x R2 is 2 x 8Gb sticks.