CL: (CAS Latency) or Column Address Strobe Latency is a measurement of delay of the chip's process. So the lower the CL number the lower the latency will be. So your answer is cl5.
CL3 - the lower the latency, the faster the read/write.
CL3
CL3 the lower the value the better
It is a type of system memory, called RAM (Random Access Memory) Kingston is the manufacturer, or brand Valueram is the product line, or model 2 GB means 'Two Gigabytes', or 2,048 megabytes 800 MHz is the RAM's speed. DDR2 is the technology, 'Double Data Rate 2'. PC2-6400 is a way of repeating speed, type, and tech. PC2 means 'DDR2' and -6400 is the speed (6400 MB/s, or 800 MHz. 100 MHz = 800 MB/s for DDR2) CL5 is the 'CAS latency'. This is how quickly the ram responds. It is a second method of measuring speed. The frequency (800 MHz) is the 'top speed', while the CAS latency is the 'acceleration'. What this means is that the computer needs 5 cycles to prepare every read or write, before it begins to do so (at 6400 MB/s). Lower CAS latency means faster response time. Generally, the frequency (MHz) is more important than CAS. But if you have two types of RAM with different CL and the same frequency (MHz), the one with the lower CL will be faster. CL5 and CL6 are standard DDR2 speeds. CL5 is considered 'good'.
CL5
cl3 CL - CAS Latency (column access strobe) refers to the number of clock cycles taken to read or write a column of data off a memory module. The lower the latency, the faster the read/write. RL - Row access strobe Latency (RAS Latency), similarlly, measures cycles taken to read\write a row of data.
The first reason is that your computer may not be able to run at the speed of the faster memory, so there would be no benefit. The second may be if the computer is not compatible with the faster memory. Depending on the design of the motherboard, some computers cannot take memory faster than they are designed for. In theory, faster memory is supposed to be programmed with the settings to run at the slower speed, but the settings are not always correct, and the faster RAM may still cause a problem with the memory controller of the computer.
yes
It is not very noticeable if you upgrade your memory on your computer.
Ddr3 sdram
memory
for faster access of memory
A CL5 file is a file used with Roxio Easy CD Creator (a program for burning files to disc). Now, you would have to specify what exactly you would want to compare it to, as you question is incomplete.
It will be significantly faster. Actually, memory is the best upgrade you can give your computer.