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  1. What is unbuffered Memory?

    Unbuffered memory (often referred to as unbuffered RAM or UDIMM - Unbuffered DIMM) is a type of computer memory module that doesn't contain any buffer ICs or registers between SDRAM and your system’s memory controller, primarily used in desktop PCs, and laptops.

  2. What is an SPD?

    The Serial Presence Detect (SPD) is an additional small EEPROM chip on a memory module holding information about the module in Hex bytes. During Boot, BIOS identifies the module, so that the motherboard knows its characteristics and timings, which can be set.

  3. What is a Memory Rank?

    A Memory Rank is a set of SDRAM chips connected to the same chip select (CS), or each rank has a block of 64-bit wide data bus, in the case of non-ECC U-DIMM (for ECC it's 72-bit).

  4. What are XMP, DOCP and EOCP?

    To make your RAM run faster at low latency, Intel developed a technology called XMP (Extreme Memory Profiles).

    DOCP (Direct Overclock Profile) and EOCP (Extended Overclock Profile), both are XMP alternatives for AMD motherboards. DOCP comes with ASUS, and EOCP comes with Gigabyte, respectively. BIOS activates the XMP and DOCP/EOCP functions.

  5. Can I use low-voltage memory modules on a regular platform?

    Yes, you can use a low-voltage memory module, on the other hand, if you install the module on a platform which doesn't support low-voltage memory modules, then the module will still run at normal voltage.

  6. How to enable over clocking Settings?

    a. Confirm System Requirements Specifications (CPU, motherboard, and memory device).

    b. For the Intel platform, please choose the option of BIOS Enable XMP.

    c. For the AMD platform, please choose the option of BIOS Enable AMP. (Motherboard factories don’t always give the same name to the overclocking options. Example: MSI DDR4 named by A-XMP & ASUS is D.O.C.P.).

  7. If we combined standard 2133 and standard 2400 module together, does it work?

    When a standard 2133 product is paired with a standard 2400 product, the system will automatically adjust the frequency to 2133 and modify the parameter settings of the 2400 product to ensure system stability. For instance, when you combine the 2133 product with the 2400 product, the system will operate at a lower frequency of 2133 and set the parameter values to 17-17-17-39.

  8. How can overclocking module achieve the best performance?

    Most motherboard manuals offer tips for overclocking. There is no single correct answer to overclocking, so trial and error is the best way to gain experience and joy of overclocking.

  9. Why my overclocking module can’t run at the advertised speed?

    If the motherboard and CPU support overclocking and all parameters are set correctly, the overclocking module should run at the advertised speed. If not, take compatibility and heat spread into consideration.

  10. Why is the default memory frequency different from overclocking memory specification?

    In order to accommodate different motherboard and CPU limitations, overclocking modules typically use lower-level SPD as the default setting. Therefore, adjusting CPU frequency, memory clock, and timing parameters is required.

  11. What is the solution to the system having blue screen problem?

    If you encounter a blue screen, it can be caused by various factors, such as issues with hardware like the RAM, motherboard, hard disk, or power supply. To determine if the problem is with the RAM, it is recommended to use Memtest86+ software for a RAM test. If you receive a red error message, it confirms that there is an issue with the RAM, and you should contact the customer service agent at OM to resolve the issue.

  12. Why I can use my memory when installed in a specific slot, but it won’t work if I change the slot?

    In general, motherboards have two or four slots to install memory modules. Some motherboards have priority slots due to the wiring, as shown in the figure below.

    Therefore, it is recommended to refer to the relevant motherboard user manual to confirm whether it is installed in the correct DIMM slot to ensure better compatibility.

  13. What is CL or CAS Latency? What does CL9-9-9-24-2N or CL15-15-15-35 mean?

    SDRAM has a delay in clock cycles between the READ command and the first bit of output data, which is known as CAS latency or CL. The delay can be adjusted by a programmable register. Memory modules with lower CL values are faster at the same frequency The latency delay consists of four numbers: tCL, tRCD, tRP, and tRAS, each representing a different type of delay. The fifth number represents the Command Rate, which in this case is 2. Although the Command Rate value may not always be listed, our default setting for it is also 2.

  14. What is the safe DRAM voltage?

    a. DDR3:- Standard DDR3 memory voltage is 1.5V. Low voltage DDR3 is at 1.35V. Ultra-low voltage DDR3 is at 1.25V. When over clocking, DDR3 memory voltage can be set up to 1.65V.

    b. DDR4:- Standard DDR4 memory voltage is 1.2V. When over clocking, DDR4 memory voltage can be set up to 1.35V; or if at DDR4-4133MHz or above, then the rated memory voltage may be up to 1.4V.

    In general, voltage above the rated memory kit specifications may damage the memory modules over time. Please also keep in mind that higher voltage means more heat, and excessive heat will shorten the lifespan of the memory modules.

  15. Why does CPU-Z (memory tab) show only half the frequency speed of my memory kit?

    CPU-Z reports the DRAM's operating frequency, but DDR (Double Data Rate) memory can carry two bits of information per cycle, so the effective frequency is double the operating frequency. DDR memory is typically listed by their effective frequency. So if your memory kit is rated for 1600MHz, it will show as 800MHz in CPU-Z. (800*2=1600)

  16. What is the difference between DDR4-3200 and PC4-25600?

    Both describe the same memory capability in two different expressions.

    When the expression starts with “DDR4-“, the memory frequency usually follows.

    When starting with “PC4-“, the memory bandwidth usually follows.

    if we divide the bandwidth by 8 or multiply the frequency by 8 both represent the same memory capability.

    For example, 3200 x 8 = 25600, while 25600 / 8 = 3200.

  17. After the memory is installed in a desktop computer, if the computer won’t reboot or identify the memory device, how to deal with the situation?

    After confirming the installation with the memory device that is suitable for your system, please follow the steps given below:

    a. Shut down the computer and unplug the power plug.

    b. Re-insert the memory device with the maximum capacity to the 1st socket, and then re-insert the memory device to with the smaller capacity in a decreasing order. Ensure that the memory module has been installed correctly, and then align each DIMM with the connector slot by aligning the notch in the DIMM with the key in the connector. Then, steadily and firmly push the memory device into the slot until it is locked to its position.

    c. Make sure that all cables in the computer are connected correctly. Probably, the required power connector is not well-connected to the motherboard, or any cables that connect to the hard disk have been disconnected by accident.

    d. After the recommended memory device is installed correctly, but the laptop won’t reboot or identify the memory device, it may be necessary to download the latest BIOS from the laptop manufacturer’s website.

  18. I want to install more memory, in addition to my existing memory kit. What are my options?

    We generally don’t recommend mixing memory kits, regardless of brand or model. By mixing memory kits, there may be compatibility issues, such as being unable to boot or unable to operate at rated specifications. Dolgix memory kits are thoroughly tested to ensure 100% compatibility within each memory kit and we haven't tested our memory kit with your existing memory kit, so we can’t guarantee any compatibility when multiple kits are used.

  19. What is Memory Failure?

    If it is a newly purchased memory, confirm that your previous memory and the newly purchased memory are of the same brand, frequency, capacity, and number of particles. If they are the same, we recommend that you try to insert the memory in another computer or other slots on your motherboard. If the problem persists, it may be a memory failure. It is recommended that you send the product through the original purchase merchant or the nearest OM authorized service center for repair. If the new memory does not belong to the same brand as before, you can consult the memory compatibility of your computer manufacturer.

  20. After the memory is installed in a laptop, if the Laptop won’t boot or identify the memory device, how to deal with the situation?

    After the verification of suitable memory for the system, please follow the steps below:

    a. Before installing the memory device, shut down the laptop computer, then remove the battery pack and unplug the power cord. Securely and firmly insert the memory device to the socket and press it downward until locked into the position. Put the battery pack and power cord back and reboot the system. If the installation still fails, try to insert the memory device to a different socket (if any).

    b. After the recommended memory device is installed correctly, but the laptop won’t reboot or identify the memory device, it may be necessary to download the latest BIOS from the laptop manufacturer’s website.

  21. How do SSDs differ from hard drives?

    An SSD works entirely differently than a typical hard disk drive, though both serve the primary function of storing and accessing data. SSDs don't use a spinning disk to store data. Instead, information is stored on NAND flash memory chips, which are proven to be much faster. SSDs have extremely low access times, as they don't require the storage medium to spin up for data access. Thus, all data on an SSD can be accessed instantaneously without any delays of mechanical "seek" times. SSDs have no moving parts, and as a result, it has many benefits over older HDD technology, including greater lifecycle, less power consumption, and less heat production with zero noise.


Om Nanotech manufactures products under brands Dolgix, Dolgix Gold, Dolgix ZIP, Dolgix Gaming and Zipmem.
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