Physical differencesĪlthough these four types of memory are DIMM formatted and can look very similar in appearance (in fact, they are all 133.35mm long). Currently, there are already 32 GB modules, but this is also being expanded little by little. The speed has been notably increased, and each time faster memories are released from the factory, but its base began at 2133 MHz.
The voltage is reduced to 1.05 and 1.2V, although many modules operate at 1.35V. This did not arrive until 2014, but today it is already the most widespread. To begin with, the memory modules operated at 1.5V and 1.65V, with base speeds of 1066 MHz, but that went much further, and the density reached up to 8 GB per module. This release occurred in 2007, and it was a revolution because XMP profiles were implemented here.
Logically, the maximum speed also multiplied, reaching 533 MHz. Its maximum density was doubled to 256 Mb (2 GB per module). Released around 2004, it ran at 1.8 volts, 28% less than DDR1.
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