Adding RAM with different specifications?

Question

Iron

There is an old computer (AMD LE - 1600, used for the browser) with one GR800D264 L5 / 1G bar, I found GR800D264 L6 / 1G on sale. The first one has a power supply of 1.25V, the second - 1.8V, plus there is a difference in the number after L (as I understand it, these are timings).
Questions:
1. Can I buy GR800D264 L6 /1G and add it to PC?
2. Is L6 slower than L5?
3. If the answer to questions 1, 2 is yes, will there be a noticeable decrease in performance due to timings?
UPD :
1. Some sources say that the GR800D264 L5 / 1G has a voltage of 1.8 Whom to believe?

Answer 1

Okay, in short, two different voltages - not a good bell! Timings are bullshit, any memory, even a cheap "Chinese almost noname" has several "profiles" of work, and one of these profiles will surely coincide with the same profile in another bar. But with voltages - you need to look at the information about the motherboard. If you now have 1.2 V, then the second bar, for a voltage of 1.8, somehow does not fit ...
Although, I looked now , you messed up something, your current bar also has a voltage of 1.8 Volts . That is, the difference is only in the timings, the new one has a little more, with a higher frequency, usually it always is.

Answer 2

- AIDA64 will show the power settings of the installed memory, as well as all other parameters. the data is read from the SPD memory chip, there is truth in the final instance
- in the general case, it is not necessary to look for the same manufacturer, the type (DDR2), frequency (800, although more can be) is important, the timings also do not have to match (but it is better that were no worse). all the same , all memory will work at a frequency of slower bars, and with lower timing parameters
- but I won’t say for sure about the discrepancy in the supply voltage, maybe this is a problem, or maybe everything automatically adjusts (observing the previous paragraph, I never encountered problems, and somehow the power issue never came into view, although the computers were assembled do-it-yourself which is three-digit)

Answer 3

Memory format DDR2 SDRAM must be able to operate at a voltage of 1.8V +/- 0.1V. Otherwise, it cannot be called DDR2 SDRAM - this is the JEDEC standard.