M6600 Owners Thread

Actually, that's interesting.

1600 MHz DDR actually runs at 800 MHz. The "double data rate" memory has the opportunity to perform two memory operations during each clock cycle, making it effectively twice as fast as non-DDR memory, which is why it is usually marketed at double the clock rate (1600 MHz in this case) — but various memory utilities may report the *actual* clock rate.

I just checked CPU-Z and it reports the actual frequency. So, 800 MHz is the expected value for "1600 MHz" modules. If you put in some 1333 MHz modules, CPU-Z would tell you it was running at 666 MHz (because it actually is).

What's interesting is, if that report is correct, it looks like you have 32 GB of memory running at 1600 MHz which is not supposed to be possible.

Has anyone else here actually tried installing 32 GB of 1600 MHz memory? Does it really not work?

CL-11 is a little high; however, I can't find any 1600 MHz 8 GB modules for sale with a CL better than 10 so...
However, 1333 MHz at CL-9 would be a tad faster than 1600 MHz at CL-11.

 

I can upload the full CPU-Z file. Perhaps there is more information in that file? Or is there another program that I can run to test it?

BTW, I am running 1.60 on Windows 7 Ultimate 64-bit.

CPU-Z TXT Report
-------------------------------------------------------------------------

Binaries
-------------------------------------------------------------------------

CPU-Z version 1.60

Processors
-------------------------------------------------------------------------

Number of processors 1
Number of threads 8


Thank you so much!

Tom

 

Interesting, a screenshot of either CPU-Z of HWINFO64 would be great.

My understanding was that 32GB at 1600mhz would simply downclock to 1333mhz on SB processors. Regardless, you should not notice any real world performance difference.

 

I'll post a screenshot in a minute. Just running Dell Diagnostics...

Tom

 

With this issue. Before I even attempt to ask dell to change anything.

1. Restore to factory default image - Win7 x64 Pro. with the Dell Backup and Recovery App.

1.1 Follow the Dell's recommended approach of installing the drivers, chipsets and apps updates in sequence.

Page 7 onwards.
http://support.dell.com/support/edocs/systems/xlob/Re-image/Efamily-Reimage.pdf

1.2 Don't update your windows or any other apps yet. Leave it as factory default and Run your usual apps that crashed.

** Backup setup 1 on DVD (better with USB HDD, much faster and more reliable). If no problem move on to next 1.3 to update.

1.3 Update everything. according to the sequence, always reboot and do a set-2 backup on a different media. Run the usual Apps that crashed. IF all else no problem.

*** Do a complete backup of your C:\ OS Partition with the Dell Backup and Recovery Manager (DBRM). * Suggest use an external USB HDD which DBRM will reformat it and install it's image. I basically use my NAS storage, two portable USB HDD and one desktop USB-HDD dedicated just for my different types of backup. Learned this the hardware way. Always, backup. It's never enough. And do a DVD backup of the "Dell Factory Image" incase the SSD factory image partition is accidentally removed or inaccessible during 3rd party OS install - especially during Linux OS setup.

2. If all the above works ok, install your Windows 2008 Server. And follow the sequence of installation as of 1.1. If it fails even with this steps, then it's obviously Windows 2008 is not compatible with some of the m6600 drivers/apps - suggest try Vmware Workstation 8 or VirtualBox.

Yeah, I know it's a painfull process. Leave it to Dell suggestion, you will end up with a refurbished unit.

Cheers.

 

Did the hibernation boot, seems ok. The power switching works. Is it still happening on your machine?

 

I think the CL vs Clock Mhz is just a matter of time, manufacturers come up with a better design. e.g. Tri-Gate Transistors.

Micron's Hybrid Memory Cubes win tech award | bit-tech.net

If it works on 1600mhz and quad-channel (like a PC mboard) then CL-11 does not affect much when the data transfer is cycled thru the four channels/banks at CL11/1600mhz.

Check this out - conclusion section.
Sandy Bridge Memory: 4GB (2 DIMM) vs 16GB (4 DIMM) | bit-tech.net

 

Here are some screenshots. Any idea what all this means <g>

Thanks,
Tom

 

It seems to indicate that you have 32 GB of memory operating at 1600 MHz CL11. Not much more to it than that.

 

Okay, thank you!!!