What is a dual-channel memory module? Are there any limitations on the use?ĭual-channel memory modules are two memory modules with the same specification, capacity and serial number in the same package. In general, a module with a smaller CL value is made with more advanced manufacturing processes, and the price is relatively higher. One CL9 module takes 9 clock ticks to prepare to read or write data from when the command is received. We suggest that you inquire the manufacturer about the supported memory module specifications and maximum capacity.Ĭolumn Access Strobe (CAS) latency, or CL, is the time of delay or preparation when data is being read or written. System chipset may not support the memory IC's identity. Please make sure contact pins are clean and free from rust and dust.ģ. Please make sure if the memory modules are installed properly, if not, please try to reinstall.Ģ. Why does my computer become unstable and keep beeping after installing memory module?ġ. Secondly, the incompatibility also due to different voltages that DDR4, DDR3, DDR2 and DDR1 respectively works at 1.2V, 1.5V (or 1.35V for low-voltage version), 1.8V and 2.5V. Firstly, each module has different pin numbers (DDR4 with 288 pins and DDR3/DDR2 with 240 pins )and different notch positions, so they can be installed in repective socket only. No, DDR4 and DDR3 are not backward compatible with DDR2 and DDR1 for the following reasons. If possible, please try to install the suspected memory module on another laptop/desktop to check if the problem is related to the motherboard.Īre DDR4 and DDR3 backward compatible with DDR2 and DDR1? We recommend that you install the suspected memory module separately to check if the problem is related to the memory module or the compatibility.Ĥ. Please make sure the memory modules are installed properly by referring to the official user manual.ģ. Use the compatability tool on the Silicon Power website at possibility is that the BIOS on the system cannot interpret the density of the memory chips. Please confirm this computer can support the maximum memory capacity you installed.Ģ. Why does my computer only recognize half the DRAM capacity?ġ.
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