Parallel presence detect (PPD)

PPD is a feature supported by some Ethernet controllers that allows the controller to detect when an Ethernet link is present on both the transmit and receive pairs of wires. This allows the controller to determine when a link is present even if one of the pairs is not operational.

What is SPD in DDR?

SPD, or Serial Presence Detect, is a type of memory used in DDR (Double Data Rate) modules. DDR modules typically have an SPD chip which contains information about the module's size, speed, timings, and other parameters. This information is used by the motherboard to configure the module for optimal performance.

How do I check my memory SPD?

There are a few different ways that you can check the SPD (Serial Presence Detect) of your memory. One way is to check the BIOS of your computer. To do this, restart your computer and press the key that allows you to enter the BIOS. This key is different for different computers, but is usually F2, F10, or DEL. Once you are in the BIOS, look for a menu called "Memory" or "SPD". Here you will be able to see information about your memory, including the SPD.

Another way to check the SPD of your memory is to use a program called CPU-Z. This program is available for free online. Once you have downloaded and installed the program, run it and go to the "Memory" tab. Here you will be able to see information about your memory, including the SPD.

You can also check the SPD of your memory by opening the case of your computer and physically checking the SPD chips on the memory modules. Each memory module will have a chip that contains information about the module, including the SPD.

What is SPD CPU Z?

SPD CPU Z is a program that allows you to change the settings on your computer's CPU. It is similar to the BIOS settings on your computer, but it allows you to change the settings without having to restart your computer. SPD CPU Z is a free program that you can download from the internet. What does CAS latency mean on RAM? CAS latency is the delay between the time a memory controller requests information from a memory module and the time the data is actually delivered. CAS stands for Column Address Strobe. The lower the CAS latency, the faster the data can be accessed.

Which types of memory chips require constant refreshing?

There are two main types of memory chips that require constant refreshing: DRAM (Dynamic Random Access Memory) and SRAM (Static Random Access Memory).

DRAM is the most common type of main memory in computers, and it needs to be refreshed because it stores a charge on its cells which can leak over time. SRAM is used for cache memory, and it needs to be refreshed because it doesn't store a charge on its cells.