Autor: Robert Kois (rkois_at_elbacsb.com.pl)
Data: Sat 24 Oct 1998 - 14:41:26 MET DST
Ponieważ http://www.puterz.com/pc100/index.html ostatnio nie działa
pozwalam sobie wrzucić jej treść :).
Polecam również: http://bxboards.pair.com/sdram.htm
I think there are few more confusing technologies then PC100 SDRAM
on the market. Main thing to keep inmind when shopping for PC100
SDRAM is that many vendors are either purposely or because of poor
knowledge are selling none PC100 SDRAM as PC100, making false claims
about speed rating etc. Here some guide lines to keep you from
getting screwed
[0] To get some Basic info on PC100 SDRAM go to our PC100 SDRAM FAQ.
[1] Stay away from vendors that claim to have 6ns SDRAM it is not
in mass production yet.
[2] There is only one 7ns capable SDRAM chip on the marcket (Samsung
Semicon with part number ending on G7 )
[3] There is a difference between SDRAM capable of runing at 100 Mhz
and PC100 compliant SDRAM, because PC100 specificationscover a lot
of different aspects of SDRAM chips not justsupported frequency).
[4] Make sure that if your vendor says that they are sellingPC100
CAS 2 SDRAM they mean PC100 SDRAMthat supports CAS 2 setting
at 100Mhz
[5] Ask vendor for chip number and use tables below to find exect
specs.
[6] Do not use any general rules to find information on SDRAM, each
Manufacturer has their own system for asigningpart numbers. -7(X)
doesn't mean it's7ns SDRAM.
CAS 2At given frequency CAS 2 setting is supported
CAS 3At given frequency only CAS 3 setting is supported
These tables provide information on 64 Mbit PC100 SDRAM chips:
SAMSUNG (SEC) 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
KMXXXSXXXXBT-G7 CAS 3 CAS3 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2
KMXXXSXXXXBT-G8 CAS 3 CAS 3 CAS 3 CAS 3 CAS 2 CAS 2
KMXXXSXXXXBT-8 CAS 3 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2
KMXXXSXXXXBT-H CAS 2 CAS 2 CAS 2 CAS 2
KMXXXSXXXXBT-L CAS 3 CAS 2 CAS 2 CAS 2
KMXXXSXXXXBT-10 CAS 3 CAS 3 CAS 2 CAS 2
MICRON 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
MTXXLCXXMXAX-8D/E CAS 3 CAS 3 CAS 2 CAS 2 CAS 2 CAS 2
MTXXLCXXMXAX-8A/B/C CAS 3 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2
MTXXLCXXMXAX-10 CAS 3 CAS 3 CAS 3 CAS 2
LG Semicon(LGS)143(7ns) 125(8ns) 112 100(10ns) 83 75 66
GMXXVXXXXXXCT/CLT-7K CAS 2 CAS 2 CAS 2 CAS 2
GMXXVXXXXXXCT/CLT-7J CAS 3 CAS 3 CAS 3 CAS 2
GMXXVXXXXXXCT/CLT-8 CAS 3 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2
GMXXVXXXXXXCT/CLT-10K CAS 3 CAS 3 CAS 3 CAS 2
Note: Many vendors try to push LGS 7K and 7J memory as 7ns, it is
not 7ns it's 10ns
HYUNDAI 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
HYXXVXXXXXXATC-8 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2 CAS 2
HYXXVXXXXXXATC-10P CAS 2 CAS 2 CAS 2 CAS 2
HYXXVXXXXXXATC-10S CAS 3 CAS 2 CAS 2 CAS 2
HYXXVXXXXXXATC-10 CAS 3 CAS 2 CAS 2 CAS 2
ATC-Make sure it's ATC because HYUNDAI also makes chips with similar
part numbers that support 100Mhz frequency,but are not PC100 compliant
NEC 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
ľPDXXXXXXG5-A10 CAS 3 CAS 3 CAS 3 CAS 2
ľPDXXXXXXG5-A80 CAS 3 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2
*ľPDXXXXXXG5-A10-9JF CAS 3 CAS 3 CAS 3 CAS 3 CAS 2 CAS 2
*ľPDXXXXXXG5-A10B-9JF CAS 3 CAS 3 CAS 3 CAS 2
*ľPDXXXXXXG5-A80-9JF CAS 3 CAS 3 CAS 2 CAS 2 CAS 2 CAS 2
*Thanx to Jay fromMemory Man for pointing out the difference
revision E (-9JF)NEC's PC100 SDRAM
TOSHIBA 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
TCXXSXXXXBFT(X)-80 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2 CAS 2
TCXXSXXXXBFT(X)-10 CAS 3 CAS 2 CAS 2 CAS 2
MITSUBISHI 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
MXMXVXXSXXATP-8A CAS 3 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2
MXMXVXXSXXATP-8L/-8 CAS 3 CAS 3 CAS 3 CAS 2
MXMXVXXSXXATP-10L/-10 CAS 3 CAS 3 CAS 3 CAS 2
Pay atention when buyingmitsubishi PC100SDRAM as you can see only -8A
is 8ns part -8/8L are 10ns
Texas (TI) 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
TMS664XX4-8 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2 CAS 2
TMS664XX4-8A CAS 3 CAS 3 CAS 3 CAS 3 CAS 3 CAS 2
TMS664XX4-10 CAS 3 CAS 3 CAS 3 CAS 3 CAS 3 CAS 2
SIEMENS 143(7ns) 125(8ns) 112 100(10ns) 83 75 66
HYB39S64XXX(AT/ATL)-8 CAS 3 CAS 3 CAS 2 CAS 2 CAS 2 CAS 2
HYB39S64XXX(AT/ATL)-10 CAS 3 CAS 3 CAS 3 CAS 2
--
Kojer ) .:.
Nieoficjalnie Mianowany Nieoficjalny Opiekun Hihota ( _oOoOo
mailto:koja_at_elbacsb.com.pl _ ___________ ) [_|||||
http://ciagle.jeszcze.nie.ma [_[___________# jgs |||||
~~~~~
To archiwum zostało wygenerowane przez hypermail 2.1.7 : Tue 18 May 2004 - 17:44:48 MET DST