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The Secrets of PC Memory:Part 3
Posted by newsbot on February 08th 2008



When users overclock their computer memory, they are literallycompressing the size of the Data Eye and changing the waveform atmultiple levels by running at a higher frequency and as a result, moredata can be transmitted over a set period. However, this takes awaypre-established safety margins. It’s a “Dark Art” because overclockers cannot observe or visualise themulti-dimensional factors at play; instead, they are looking for signsin stability, the general “feel” of the system and good old trial anderror as each factor can and will interact and influence countlessothers, settling a new wave equilibrium.Generally, raising DRAM voltage allows for faster memory speed, “but that also depends on the architecture of the chip too” explainsBrett Williams, Senior Marketing Manager in Computing at MicronTechnology. “If the voltage is designed to be regulated, then increasingthe external voltage might not do anything for the chip because youhave got a regulator on the chip that is keeping the core at a specificvoltage. If the chip is unregulated, when you increase the externalvoltage, it goes right into the core and increasing the core voltageallows the part to operate faster.”As enthusiasts, we often enjoy the power of having various DRAMtweaking configurations exposed in the motherboard BIOS. While they maybe useful, average users at home do not have an intimate understandingof most functions in order to establish a basis to make effectiveperformance improvements.

View article at bit-tech.net



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