Those who cannot remember the past are condemned to repeat it
Rubina Ali ( kid Latika from Slumdog Millionaire), in her slum with her dear ones
Oh poverty, in thy holiness, I shall exploit you to grovel up to Golden Globes or perhaps, may be, Oscars
But lest you are not the one who ever spent a day in embrace of it, I doubt you can measure the depth of scars
A momentary guilt and shedding two tears will be enough, I doubt you can still measure the depth of farce
I recently upgraded my system RAM by adding one 2GB RAM module. I already had 1GB RAM module inserted into DIMM socket. So first thing was to check out the best possible configuration to for optimal performance. Flex mode was the only best possible solution for my motherboard (intel DG965RY) with 4 DIMM sockets.
Typical Motherboard DIMM slot view
This mode offers the highest throughput for real world applications. Dual channel mode is enabled when the installed memory capacities of both DIMM channels are equal. Technology and device width can vary from one channel to the other but the installed memory capacity for each channel must be equal. If different speed DIMMs are used between channels, the slowest memory timing will be used.
Dual Channel (Interleaved) Mode configuration using Two identical DIMM modules
Dual Channel (Interleaved) Mode configuration using Three DIMM modules, note that each Channel A and Channel B have same amount of memory
Dual Channel (Interleaved) Mode configuration using four DIMM modules, note that each Channel A and Channel B have same amount of memory
This mode is equivalent to single channel bandwidth operation for real world applications. This mode is used when only a single DIMM is installed or the memory capacities are unequal. Technology and device width can vary from one channel to the other. If different speed DIMMs are used between channels, the slowest memory timing will be used
Single Channel (Asymmetric) Mode with only one DIMM, note that memory distribution in Channel A and Channel B is uneven
Single Channel (Asymmetric) Mode with three DIMMs, note that memory distribution in Channel A and Channel B is uneven
This mode provides the most flexible performance characteristics. The bottommost DRAM memory (the memory that is lowest within the system memory map) is mapped to dual channel operation; the topmost DRAM memory (the memory that is nearest to the 8 GB address space limit), if any, is mapped to single channel operation. Flex mode results in multiple zones of dual and single channel operation across the whole of DRAM memory. To use flex mode, it is necessary to populate both channels
Flex Mode configuration with two DIMMs
References: Intel DG965RY manual
What to do if your system is not responding and gone into eternal freeze. You might be tempted to press the restart button on the CPU cabinet or will turn off the UPS.
1.Execute this command with root privileges
or permanently enable it
2. Add this line to sysctl.conf (/etc/sysctl.conf)
The easiest trick is to directly communicate with the Kernel via /proc filesystem.
It will safely restart your PC with no loss of data (in most cases). Remember it as Reboot Even If System Utterly Broken.
What if you wanted to shut down the PC
So next time keep this little handy trick to show some mercy to your system and valuable data.
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