qu ately describe th ree-dim en sion al h eat flow. Th e fin al ch ip-ju n ction operatin g tem per-
atu re is n ot on ly a fu n ction of th e com pon en t-level th erm al resistan ce, bu t th e system -
level design an d its operatin g con dition s. In addition to th e com pon en t's power dissipa-
tion , a n u m ber of factors affect th e fin al operatin g die-ju n ction tem peratu re. Th ese fac-
tors m igh t in clu de air flow, board popu lation (local h eat flu x of adjacen t com pon en ts),
h eat sin k efficien cy, h eat sin k attach , n ext-level in tercon n ect tech n ology, system air
tem peratu re rise, etc.
8.0 Ordering Information
Th is section provides th e part n u m berin g n om en clatu re for th e PPC740 an d PPC750.
Note th at th e in dividu al part n u m bers correspon d to a m axim u m processor core fre-
qu en cy. For available frequ en cies, con tact you r local IBM sales office.
In addition to th e processor frequ en cy an d bu s ratio, th e part n u m berin g sch em e also
con sists of a part m odifier. Th e part m odifier allows for th e availability of fu tu re
en h an ced parts (th at is, lower voltage, lower power, h igh er perform an ce, etc.).
Each part n u m ber also con tain s a revision code. Th is refers to th e die m ask revision
n u m ber an d is specified in th e part n u m berin g sch em e for iden tification pu rposes on ly.
Figu re 23 provides th e IBM part n u m berin g n om en clatu re for th e PPC740 an d
PPC750.
IBM25EMPPC7XXXBUXXXX0
Tray Shipping Container
PPC740 or PPC750 Family
Processor Frequency
Revision Level (DD2.1)
Package (BGA)
Applic. Conditions:
F = 2.5V ± 5%, 0 - 105C
B = 2.5 - 2.7V, 0 - 105C
Blank Digits
for Available Bus Ratios)
(Contact Local IBM Sales Office
Figure 23. IBM Part Number Key
Table 19 provides a list of part description s.
Table 19. PPC740 and PPC750 Part Descriptions
Product
Name
OEMLS Part
Number
CPU
Frequency
DD
Level
Package
PVR
Arthur (740)
Arthur (740)
IBM25EMPPC740E
BUF2000
200
233
21MM (255) CBGA
21MM (255) CBGA
0X00080100
0X00080100
2.2
2.2
IBM25EMPPC740E
BUB2330
41 of 43
PPC740 and PPC750 Hardware Specifications
Preliminary and subject to change without notice
IBM [ IBM ]
