1600Mhz RAM on 1333MHZ max board

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Noctra

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Okay so I have a MSI G41M-P34 MOBO and according to specs it is only rated for 1333Mhz RAM.
I have 2 sticks of Corsair XMS3 DDR3 4GB (2x2GB) CMX4GX3M2A1600C9 at 9-9-9-24 1.65v
This is a 2 part question.

1: Will using these sticks on the above MOBO cause the BIOS to see them as only half?
Meaning I put in both sticks and it only reads 4gb of ram both on the BIOS and in Windows

2: Is there some possible way of making the MOBO or Windows see all 8gb or ram?

 
Solution
MSI G41M-P34 - http://www.msi.com/product/mb/G41M-P34.html#?div=Detail
Supports two unbuffered DIMM of 1.5 Volt DDR3 800/1066/1333* (OC) DRAM, 8GB Max

First, personally I won't get a DDR3-1600 kit for a DDR3-1333 (OC) MOBO. Next, the Default 'SDP' is dependent upon the Intel CPU used.

ANS:
1. If the RAM works (2x2GB) is 4GB so yes, the MOBO will/should see all 4GB but some will be HW reserved even with a 64-bit OS.
2. If you get a 2x4GB kit, IMO DDR3-1333 @ 1.50v, then sure Windows will see the majority of the 8GB. *Problem = CMX4GX3M2A1600C9 is a 4GB kit NOT an 8GB kit. Your MOBO only has 2xDIMM slots so 2x4GB is required plus a 64-bit OS.

jsrudd

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You can just run the RAM at 1333mhz.

You board not supporting 1600mhz does not mean that it will only see half the RAM. If you have Windows 32-bit then you will only get 4gb of total RAM.

 

Noctra

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OOPS, forgive me for not saying I am running Windows 7 Ultimate 64Bit just so that is out of the way.
Also I ran CPU-z and it shows both Ram Chips as only 2gb each.
 
MSI G41M-P34 - http://www.msi.com/product/mb/G41M-P34.html#?div=Detail
Supports two unbuffered DIMM of 1.5 Volt DDR3 800/1066/1333* (OC) DRAM, 8GB Max

First, personally I won't get a DDR3-1600 kit for a DDR3-1333 (OC) MOBO. Next, the Default 'SDP' is dependent upon the Intel CPU used.

ANS:
1. If the RAM works (2x2GB) is 4GB so yes, the MOBO will/should see all 4GB but some will be HW reserved even with a 64-bit OS.
2. If you get a 2x4GB kit, IMO DDR3-1333 @ 1.50v, then sure Windows will see the majority of the 8GB. *Problem = CMX4GX3M2A1600C9 is a 4GB kit NOT an 8GB kit. Your MOBO only has 2xDIMM slots so 2x4GB is required plus a 64-bit OS.
 
Solution

Noctra

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Okay wait, am I just retarded then? Is each individual stick only 2gb? Have I been tearing my hair out and up all night over a nonexistent problem? The reason I ask is because I looked up pictures of the serial number and all the ones I saw were blue and black and mine is just black.
As for getting the kit I already have it.
The CPU being used is an Intel Celeron Processor E3300 (1M Cache, 2.50 GHz, 800 MHz FSB)
I swear I am going to facepalm myself REALLY hard if that is the case.
 

Do not set the DRAM Voltage -> 1.65v; 1.65v is only for the Rated DDR3-1600 and I assume the RAM is running DDR3-1066 or slower and the correct Voltage is 1.50v or Auto.

Use CPU-z http://www.cpuid.com/softwares/cpu-z.html look at the 'Memory' tab,
** Q - What does it list? It should look similar as below.

Next, open the Windows 7 Resource Monitor.
** Q - What are the: 1. Hardware Reserved, 2. Total and 3. Installed values?

CPU-z Memory tab:
softwares-cpuz-04.jpg


Windows 7 Resource Monitor:
RM_7PRO6GB.gif
 

Specifications Corsair XMS3 DDR3 4GB (2x2GB) CMX4GX3M2A1600C9 (4GB) Kit - http://www.corsair.com/cmx4gx3m2a1600c9.html

No you simply made a mistake.
 

Noctra

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Okay so I have one more question, I see that those are blue and black and mine are simply black. Do they make them with different colors? I didn;t see any of the 2x2GB modules that were all black. Does that mean mine are older?

Also I checked my CPUZ and it says
400.0 MHZ
FSB: DRAM 1:2
6.0 clocks
6 clocks
6 clocks
15 clocks
64 clocks
2t

And as for the Resource manager
it is
Reserved 35MB
Total 4061 MB
Installed 4096 MB

P.S. Is there a way to get it to the 9-9-9-24 or is lower better?
 
The CAS Timings 6-6-6-15 are considerably faster than 9-9-9-24. edit: your RAM and settings appear to be correct and fine.

'Memory Speed' is a function of Frequency (higher = faster), CAS Timings (lower = faster), and the CPU's Integrated Memory Controller (IMC) or Memory Chip Controller (MCC). Think of CAS like pauses (ns), the higher the CAS the longer the wait.

Further, in CPU-z look at the 'SPD' tab and available Frequencies / CAS aka JEDEC. Exceeding them can yield undesirable results; BSOD/Errors/Post failure. If there's a 400MHz (same as DDR3-800) with say 5-5-5-15 then sure it might be worth while to modify the BIOS otherwise IMO leave it alone. DDR = Double Data Rate ; DRAM Frequency = 400MHz is DDR3-800.

Here's a Frequency to CAS Timings Chart:
CAS_Frequncy_Chart.png
 
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