Informazioni RAM

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Ciao ragazzi, volevo chiedervi un paio di informazioni inerenti alla mia memoria.
Ho 2 moduli da 512 Corsair DDR2-SDRAM PC4300(533MHz).
Le mie domande sono queste:
Sono buone?

Che significa no parity?(le mie sono no parity)

CPU-Z mi da nella tabella "SPD timings table" i seguenti valori:
200MHz
3.0 3 3 9

266MHz
4.0 4 4 12

cosa significano?

Scusatemi per la mia ignoranza. Grazie in anticipo.

[WebWolf]

RAM traditionally has been available in two types: non-parity and parity. Non-parity is the most common. It contains one bit of memory for each bit of data that is stored. Eight bits are used to store each byte of data.

Parity memory adds an extra bit for every eight bits of data. It is used for error detection and correction.

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The new DIMM-modules include a EPROM-chip holding information about the module. This little 8-pin chip works as a SPD (Serial Presence Detect) - a unit storing information about the RAM type. The idea is that BIOS can read this information and this way tune the system bus and the timings for a perfect CPU-RAM performance.


[Scusa ma ho fatto copia e incolla da un sito in inglese]

http://www.karbosguide.com/hardware/module2e3.htm