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Two instruction pipelines and two floating point units. These can operate
independently, executing two instructions per clock cycle.
Improved floating-point operation using faster algorithms to speed up calculation-
intensive software.
Dynamic branch prediction to anticipate where instructions are heading.
Two separate 8 KB level-one caches-- one for code and one for data.
Data transfers to and from the processor are between five and ten times faster than
that of the 486. This is mainly due to the 64-bit data bus and instruction pipelining.
Dual Pentium Processor. The HP Vectra XU has a ZIF (Zero Insertion Force) socket
on the system board. This allows a Dual Pentium processor to be installed easily.
(D3096A for 90 Mhz models, D3096B for 100 MHz models). (Refer to Installing a Dual
Pentium Processor.)
Cache memory. The HP Vectra XU PCs have 16 KB of level-one cache memory in the
microprocessor and 256 KB of level-two cache memory on the system board. 5/100C
models have 512 KB of level two cache memory on the system board.
CMOS RAM. System configuration data is held in CMOS RAM, and is backed up with a
gold capacitor.
Main Memory Modules. The HP Vectra XU has eight sockets on the system board.
Sockets are grouped into four banks, labeled A to D; there are two sockets in each
bank. Memory modules must be installed in pairs of the same capacity, beginning with
bank A, up to bank D.
The HP Vectra XU is supplied with 8 or 16 MB of memory as standard, depending on
the model, upgradeable to 256 MB. It uses 70 ns, 32-bit memory modules:
4 MB (D2974A)
8 MB (D2975A)
16 MB (D2297A)
32 MB (D2298A).
Accessory Board Slots. Five industry-standard accessory board slots: three 16 -bit
ISA slots, one 32 -bit PCI slot, and one combination 16 -bit ISA or 32 -bit PCI slot.
Video adapter. The video adapter has 2 MB of video memory on the system board.
C models have a Matrox video adapter board; on these the video memory is
upgradeable to 4 MB. The integrated video adapter on the system board, and the
Matrox video adapter board, are both PCI devices.
The integrated video adapter on the system board can display the following resolutions:
16 colors
Resolution
Standard
VGA (4bpp*)
640 x 480
Not Available
800 x 600
Not Available
Vectra XU Familiarization Guide
Colors and refresh rates
256
64K colors
colors
hi-color
(8bpp)
(16bpp)
60/72 Hz
60/72/75 Hz
Product Overview and Features
16.7M colors
true-color (32
bpp)
60/72 Hz
15
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