jameshanley39@yahoo.co.uk wrote:
> On 12 Jun, 15:47, "GT" <ContactGT_remo...@hotmail.com> wrote:
>> <jameshanle...@yahoo.co.uk> wrote in message
>>
>> news:1181657822.632654.50550@j4g2000prf.googlegrou ps.com...
>>
>>
>>
>>
>>
>>> On 12 Jun, 14:14, "GT" <ContactGT_remo...@hotmail.com> wrote:
>>>> <jameshanle...@yahoo.co.uk> wrote in message
>>>> news:1181652420.577218.145210@a26g2000pre.googlegr oups.com...
>>>>> I know a bit about what DDR2 is.. and different notch position, not
>>>>> compatible with DDR.
>>>>> But i'm puzzled overPC2.
>>>>> I once suspected thatPC2was DDR2.
>>>>> I'm sure i've often seenPC2DDR2
>>>>> But I just saw some RAM in a laptop that saidPC2but also said DDR.
>>>> I suspect you have seen something like PC2700 and assumed it isPC2700,
>>>> whereas it is actually PC 2700.
>>> absolutely right!!
>>> thanks!
>>> I shouldn't have made that mistake. It said PC2100. DDR 266 (so
>>> 133Mhz).
>>> 133*16~=2100.
>>> But since it said DDR, it had to be PC. NotPC2
>>> I goess there is no such thing asPC2100
>>> I'm not up onPC2speeds.. But I know that with PC amounts, they went
>>> PC 66, PC 100, maybe even PC133 and PC150 (for the bus), Then they
>>> came up with DDR. What was the lowest speed they made DDR at ?
>> There is noPC2. There is PC2100, PC2700, etc. There is DDR, DDR2 and DDR3.-
>
> if there is no PC2 then what is this?
>
> google PC2 5300 DDR2, there's DDR2 PC5400 too
> there's PC2 4200 too
>
> and they are on ebay too.
>
> it does seem to me , - i haven't researched it thoroughly though -
> that when ram is specified, so, in the terminology. DDR and PC go
> together.
> But for DDR2, it can be written with PC or with PC2. Both give google
> results.
>
> So , with DDR2, there does appear to be a thing as PC2.. Is it the
> same as PC ?
>
> TIA

The place to chase down labeling information, is jedec.org, the standards
body. For example, this is a sample of a document discussing DDR2:

http://www.jedec.org/download/search/N06-NM5.pdf

The naming convention is PC2-wwww, as in PC2-4200, for DDR2.

Paul