Identify memort chips by number

Is there any program to find out my memory’s manufacturer? | Tom's Hardware Forum

The information below will help illustrate the various settings that can be adjusted when setting the memory timings in the motherboard BIOS for optimum performance. Some systems or motherboard configurations may not operate at the published HyperX memory speeds and timing settings. HyperX does not recommend that any user attempt to run their computers faster than at the published speed. Overclocking or modifying your system timing may result in damage to computer components.

All rights reserved. Several of the best reasons to buy memory from the manufacturer are due to three quality control steps that are built into the manufacturing process: traceability codes, burn-in testing, and guardband testing. These numbers are used to identify and fix problems that may occur in batches of modules.


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Using the traceability code, chip manufacturers, such as Micron, are able to determine when the part was built, which fab it was built in, and are able to trace it to the original silicon wafer that the problematic chip was derived from. By building databases of this information, chip manufacturers are better able to pinpoint the cause of memory problems, correct them, and manufacture a new batch of modules that are better than before.

Over time, these improvements in manufacturing process have a noticeable impact on module quality that is hard, if not impossible, for third-party assemblers to emulate. When you purchase from an original manufacturer, you're able to take advantage of module technology that's been consistently improved over time.

In addition to the advantage of traceability codes, authentic manufacturers use a process called burn-in testing, which helps produce higher quality modules than companies that assemble modules from a variety of components. Seymour Cray famously said " parity is for farmers " when asked why he left this out of the CDC Many current microprocessor memory controllers, including almost all AMD bit offerings, support ECC, but many motherboards and in particular those using low-end chipsets do not. An ECC-capable memory controller can detect and correct errors of a single bit per bit " word " the unit of bus transfer , and detect but not correct errors of two bits per bit word.

The BIOS in some computers, when matched with operating systems such as some versions of Linux , macOS , and Windows , [ citation needed ] allows counting of detected and corrected memory errors, in part to help identify failing memory modules before the problem becomes catastrophic. Error detection and correction EDAC depends on an expectation of the kinds of errors that occur.

Memory Chip Organization

Implicitly, it is assumed that the failure of each bit in a word of memory is independent, resulting in improbability of two simultaneous errors. This used to be the case when memory chips were one-bit wide, what was typical in the first half of the s; later developments moved many bits into the same chip. DRAM memory may provide increased protection against soft errors by relying on error correcting codes.

Such error-correcting memory , known as ECC or EDAC-protected memory, is particularly desirable for high fault-tolerant applications, such as servers, as well as deep-space applications due to increased radiation. Some systems also " scrub " the memory, by periodically reading all addresses and writing back corrected versions if necessary to remove soft errors.

Foundation Topics

Interleaving allows for distribution of the effect of a single cosmic ray, potentially upsetting multiple physically neighboring bits across multiple words by associating neighboring bits to different words. As long as a single event upset SEU does not exceed the error threshold e. Error-correcting memory controllers traditionally use Hamming codes , although some use triple modular redundancy TMR.

The latter is preferred because its hardware is faster than that of Hamming error correction scheme. Many early implementations of ECC memory mask correctable errors, acting "as if" the error never occurred, and only report uncorrectable errors. Modern implementations log both correctable errors CE and uncorrectable errors UE.

DRAM Module Compatibility Search

Some people proactively replace memory modules that exhibit high error rates, in order to reduce the likelihood of uncorrectable error events. As of , the most-common error-correction codes use Hamming or Hsiao codes that provide single-bit error correction and double-bit error detection SEC-DED. Early research attempted to minimize the area and delay overheads of ECC circuits. More recent research also attempts to minimize power in addition to minimizing area and delay. If an error is detected, data is recovered from ECC-protected level 2 cache.


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Registered, or buffered, memory is not the same as ECC; the technologies perform different functions. It is usual for memory used in servers to be both registered, to allow many memory modules to be used without electrical problems, and ECC, for data integrity. Memory used in desktop computers is neither, for economy. Ultimately, there is a trade-off between protection against unusual loss of data, and a higher cost.

ECC protects against undetected memory data corruption, and is used in computers where such corruption is unacceptable, for example in some scientific and financial computing applications, or in file servers.