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post #11 of 17
The board/BIOS should select one of the JEDEC SPD values based on the memory multiplier it's asked to use.

If the sticks pass individually, there is nothing physically wrong with the memory. It's possible that there is an issue with the CPU's IMC or the system board, but I'd consider this unlikely. Most likely Kingston's SPD values are set too aggressively for multiple DIMMs or Sager's BIOS is filling in the sub-timings that are not part of SPD wrong.

Performance memory not working correctly out of the box at manufacturer specs is not all that rare (especially when paired with boards they haven't tested with), and is usually easy to fix with a few timing changes. However, if you don't have access to any manual memory timing options, you could be SOL with this memory.

Some possible solutions:

1. See if there is a new BIOS available for the laptop. Many times these feature new memory tables that improve compatability.

2. Reprogram the SPD yourself. Software (like Thaiphoon Burner) is the cheapest way to do this, but regardless of how you do it you need a high degree of technical understanding or you could wind up with memory that doesn't work. Modifying SPD values are also certain to void the warranty of the memory.

3. Get different memory. If it looks like "enthusiast" memory, stay away. If it's got heatspreaders, stay away. Buy the most generic memory of the speed you are looking for from the biggest OEM you can find. These, perhaps ironically, tend to be most compatable. They tend to be unbinned and will use ICs speced for the speed on the DIMMs label. They also tend to have slack sub timings, which is good if you have no way to adjust them yourself.
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post #12 of 17
Thread Starter 
Quote:
Originally Posted by Blameless View Post

The board/BIOS should select one of the JEDEC SPD values based on the memory multiplier it's asked to use.
If the sticks pass individually, there is nothing physically wrong with the memory. It's possible that there is an issue with the CPU's IMC or the system board, but I'd consider this unlikely. Most likely Kingston's SPD values are set too aggressively for multiple DIMMs or Sager's BIOS is filling in the sub-timings that are not part of SPD wrong.
Performance memory not working correctly out of the box at manufacturer specs is not all that rare (especially when paired with boards they haven't tested with), and is usually easy to fix with a few timing changes. However, if you don't have access to any manual memory timing options, you could be SOL with this memory.
Some possible solutions:
1. See if there is a new BIOS available for the laptop. Many times these feature new memory tables that improve compatability.
2. Reprogram the SPD yourself. Software (like Thaiphoon Burner) is the cheapest way to do this, but regardless of how you do it you need a high degree of technical understanding or you could wind up with memory that doesn't work. Modifying SPD values are also certain to void the warranty of the memory.
3. Get different memory. If it looks like "enthusiast" memory, stay away. If it's got heatspreaders, stay away. Buy the most generic memory of the speed you are looking for from the biggest OEM you can find. These, perhaps ironically, tend to be most compatable. They tend to be unbinned and will use ICs speced for the speed on the DIMMs label. They also tend to have slack sub timings, which is good if you have no way to adjust them yourself.

Thanks for the info. I still have a question though.

How slight is the chance that my CPU (2670QM which officially supports up to 1333MHz based on Intel's specs) is not compatible with the Kingston HyperX Pnp RAM? I'm asking this because before sending this kit to me, Sager tested the kit and here was the result:

Kevin8130memory1.jpg

As seen in the image, it was error-free for 24 hours. They've used the same laptop as mine; the only difference was that they've used a higher CPU (2720QM which officially supports up to 1600MHz RAM based on Intel's specs). My laptop still defaults to using the 1600MHz JEDEC because obviously it is supported even though Intel says that my 2670QM only supports up to 1333MHz.

Right now, Sager is sending me another kit (a Samsung brand that is CAS11) for me to try. The Kingston HyperX memory kit is indeed an enthusiast RAM kit with heatspreaders and tight timings (CAS9). I have a strong feeling that the Samsung brand will work with my laptop and is error-free but I have yet to see. If this is the case, can I conclude that it is indeed the CPU that's limiting my system in using 1600MHz CAS9 RAM?

Thanks.
post #13 of 17
I'm fairly certain that no Intel mobile processors (and few desktop ones) officially support any over DDR3-1333.

Could be any number of subtle differences between Sager's test system and your own, but their CPU could indeed have a stronger IMC (such things can vary quite considerably, even between chips with identical model and specification).
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post #14 of 17
Thread Starter 
Quote:
Originally Posted by Blameless View Post

I'm fairly certain that no Intel mobile processors (and few desktop ones) officially support any over DDR3-1333.
Could be any number of subtle differences between Sager's test system and your own, but their CPU could indeed have a stronger IMC (such things can vary quite considerably, even between chips with identical model and specification).

Well, I got my info here: http://en.wikipedia.org/wiki/Intel_Sandy_Bridge_(microarchitecture) where it says under Motherboard Interface in the Intel Mobile section that the 2720QM is the lowest-end Mobile CPU that supports up to 1600MHz officially. All other below it supports up to 1333MHz. You mean their 2720QM have a stronger IMC than my 2670QM?
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