Re-setting ram clock speed

[drone4four]

I just upgraded the ram in my PC. I bought 2x2GBs of DDR2 1066mhz Crucial ram. When I arrived to pick up my PC at my local PC shop last week, the technician showed me the new ram installed with the old DDR2 800mhz Kingston ram still in the ram banks which meant that I had a total of 8GBs of ram installed, with the new Crucial sticks clocked down to 800mhz to match the lower frequency of the Kingston ram. Therefore, right then and there, I asked to technician to take out the Kingston ram because I specifically wanted 4GBs of 1066mhz ram. So a week after bringing my PC home, I figure out the command which informs me the clock speed of the ram: sudo lshw. sudo lshw shows me that the new Crucial DDR2 1066mhz ram is still clocked at 800mhz:

drone4four@lucid:~$ sudo lshw

...

*-memory
          description: System Memory
          physical id: 1b
          slot: System board or motherboard
          size: 4GiB
        *-bank:0
             description: DIMM 800 MHz (1.2 ns)
             physical id: 0
             slot: A0
             size: 2GiB
             width: 64 bits
             clock: 800MHz (1.2ns)
        *-bank:1
             description: DIMM [empty]
             physical id: 1
             slot: A1
        *-bank:2
             description: DIMM 800 MHz (1.2 ns)
             physical id: 2
             slot: A2
             size: 2GiB
             width: 64 bits
             clock: 800MHz (1.2ns)
        *-bank:3
             description: DIMM [empty]
             physical id: 3
             slot: A3

I ran memtest to verify the clockspeed of my ram which confirmed the information shown with lshw.

How do I reset the clock (rather than over clock) my ram back to the default 1066mhz up from 800mhz? Is there some software I can download that will do this for me?

I am running Ubuntu 10.04 64bit.

[drone4four]

I thought about taking my PC back to the shop, but that is such a mission because I have to get my parents to drive me and parking is a bitch. So if there is a way for me to fix the problem with the help of other Phoronix users, I'd really appreciate that.

I would have preferred to edit my original message to add the above 2 sentences, but I couldn't find the edit button. Where is it?

[drone4four]

Daekdroom in #phoronix on FreeNode suggested I put my mobo and CPU info up in this thread. Here it is:

drone4four@lucid:~$ sudo lshw
lucid                     
    description: Desktop Computer
    product: P35-S3G
    vendor: Gigabyte Technology Co., Ltd.
    width: 64 bits
    capabilities: smbios-2.4 dmi-2.4 vsyscall64 vsyscall32
    configuration: boot=normal chassis=desktop uuid=00000000-0000-0000-0000-001FD05E3744
  *-core
       description: Motherboard
       product: P35-S3G
       vendor: Gigabyte Technology Co., Ltd.
       physical id: 0
       version: x.x
     *-firmware
          description: BIOS
          vendor: Award Software International, Inc.
          physical id: 0
          version: F2 (11/30/2007)
          size: 128KiB
          capacity: 960KiB
          capabilities: pci pnp apm upgrade shadowing cdboot bootselect edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
     *-cpu
          description: CPU
          product: 06/17
          vendor: Intel Corp.
          physical id: 4
          bus info: cpu@0
          slot: Socket 775
          size: 3GHz
          capacity: 4GHz
          width: 64 bits
          clock: 333MHz
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni tm2 ssse3 lahf_lm
        *-cache:0
             description: L1 cache
             physical id: a
             slot: Internal Cache
             size: 64KiB
             capacity: 64KiB
             capabilities: synchronous internal write-back
        *-cache:1
             description: L2 cache
             physical id: b
             slot: External Cache
             size: 6MiB
             capabilities: synchronous internal write-back
     *-memory
          description: System Memory
          physical id: 1b
          slot: System board or motherboard
          size: 4GiB
        *-bank:0
             description: DIMM 800 MHz (1.2 ns)
             physical id: 0
             slot: A0
             size: 2GiB
             width: 64 bits
             clock: 800MHz (1.2ns)
        *-bank:1
             description: DIMM [empty]
             physical id: 1
             slot: A1
        *-bank:2
             description: DIMM 800 MHz (1.2 ns)
             physical id: 2
             slot: A2
             size: 2GiB
             width: 64 bits
             clock: 800MHz (1.2ns)
        *-bank:3
             description: DIMM [empty]
             physical id: 3
             slot: A3

Again, I would have preferred to edit the original post instead of making a new one, but I still can't seem to find the edit button.

[RealNC]

You adjust RAM clocks in the BIOS setup. Set it to "auto". If that won't work, manually select 1066.

On another note, you don't win much with 1066 compared to 800. I would have kept the 8GB mixed RAM and would have lowered the latency settings of the 1066 RAM to match the 800 modules.

[drone4four]

By tinkering around in my BIOS I discovered how to adjust my RAM clocks. "Auto" sets it to 800Mhz. So, as you suggested, RealNC, I manually selected 1066. However, I think I will also do as you suggested and put 4GBs of the 800Mhz ram back in. Thanks for the advice, RealNC. =D

[drone4four]

I'm resurrecting this old thread because I am today experiencing a similar problem with new RAM I just bought. I picked up Kingston Hyper-X 4x4GBs of DDR3 1600 MHz ram at my local PC shop. The new RAM runs Windows 7 without any BSODs and it runs Ubuntu without any kernel panics. I have however run into an issue. The BIOS says it is only running at 1333 MHz, rather than 1600 MHz as it says on the packaging. I know my relatively new motherboard (a GIGABYTE GA-P45T-ES3G LGA 775 Intel P45) is capable of running 1600MHz memory because it says so in the motherboard manual and says so on Newegg where I ordered it:

http://www.newegg.ca/Product/Product...82E16813128496

What settings should I change in my BIOS to up the speed from 1333Mhz to 1600Mhz? Here is the section of the BIOS designated DRAM Performance Control:

http://picpaste.com/BIOS-iii-ONeKC6sd.jpg

Also, here is the new memory related output for sudo lshw:

<user>@natty:~$ sudo lshw
...
     *-memory
          description: System Memory
          physical id: 1c
          slot: System board or motherboard
          size: 16GiB
        *-bank:0
             description:  400 MHz (2.5 ns)
             physical id: 0
             slot: A0
             size: 4GiB
             width: 2244 bits
             clock: 400MHz (2.5ns)
        *-bank:1
             description: DIMM 400 MHz (2.5 ns)
             physical id: 1
             slot: A1
             size: 4GiB
             width: 2244 bits
             clock: 400MHz (2.5ns)
        *-bank:2
             description: DIMM 400 MHz (2.5 ns)
             physical id: 2
             slot: A2
             size: 4GiB
             width: 2244 bits
             clock: 400MHz (2.5ns)
        *-bank:3
             description: DIMM 400 MHz (2.5 ns)
             physical id: 3
             slot: A3
             size: 4GiB
             width: 2244 bits
             clock: 400MHz (2.5ns)
...

As you can see, the clock for the 4 DIMMs are set to 400 MHz rather than 1333 MHz as it says in the pic of my BIOS. It?s also interesting to note that my current DIMMs are set to 400 MHz whereas before the upgrade, on my old motherboard, way back in November of 2010 my DIMMs were set to 800 MHz. What gives?