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UltraSPARC-I 167MHz - Sun Microsystems
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UltraSPARC-I 167MHz
General Info
DesignerSun Microsystems
ManufacturerTexas Instruments
Model NumberUltraSPARC-I 167MHz
Part NumberSTP103OBGA-167
MarketServer, Workstation
IntroductionOctober 2, 1995 (announced)
October 2, 1995 (launched)
Release Price$1,395
General Specs
FamilyUltraSPARC
SeriesUltraSPARC-I
Frequency167 MHz
Microarchitecture
ISASPARC V9 (SPARC)
MicroarchitectureUltraSPARC-I
Process0.5 µm
Transistors5,200,000
TechnologyCMOS
Die310 mm²
Word Size64 bit
Cores1
Threads1
Electrical
Power dissipation (average)28 W
Vcore3.3 V
Packaging
PackageBGA-521 (BGA)UltraSPARC-I package back.png
Pins521

UltraSPARC-I 167MHz was a 64-bit SPARC microprocessor designed and introduced by Sun Microsystems in late 1995. This processor operates at 167 MHz and typically dissipates 28 W.

Cache[edit]

Main article: UltraSPARC-I § Cache

In addition to the on-chip cache, this chip also required an external cache that is either 512 KiB, 1 MiB, 2 MiB, or 4 MiB with a line size of 64 bytes.

[Edit/Modify Cache Info]

hierarchy icon.svg
Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.
L1$32 KiB
32,768 B
0.0313 MiB
L1I$16 KiB
16,384 B
0.0156 MiB
1x16 KiB2-way set associative 
L1D$16 KiB
16,384 B
0.0156 MiB
1x16 KiB16-way set associativewrite-through

Documents[edit]

Datasheets[edit]

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UltraSPARC-I 167MHz - Sun Microsystems#package +
base frequency167 MHz (0.167 GHz, 167,000 kHz) +
core count1 +
core voltage3.3 V (33 dV, 330 cV, 3,300 mV) +
designerSun Microsystems +
die area310 mm² (0.481 in², 3.1 cm², 310,000,000 µm²) +
familyUltraSPARC +
first announcedOctober 2, 1995 +
first launchedOctober 2, 1995 +
full page namesun microsystems/ultrasparc/stp1030bga-167 +
instance ofmicroprocessor +
isaSPARC V9 +
isa familySPARC +
l1$ size32 KiB (32,768 B, 0.0313 MiB) +
l1d$ description16-way set associative +
l1d$ size16 KiB (16,384 B, 0.0156 MiB) +
l1i$ description2-way set associative +
l1i$ size16 KiB (16,384 B, 0.0156 MiB) +
ldateOctober 2, 1995 +
manufacturerTexas Instruments +
market segmentServer + and Workstation +
microarchitectureUltraSPARC-I +
model numberUltraSPARC-I 167MHz +
nameUltraSPARC-I 167MHz +
packageBGA-521 +
part numberSTP103OBGA-167 +
power dissipation (average)28 W (28,000 mW, 0.0375 hp, 0.028 kW) +
process500 nm (0.5 μm, 5.0e-4 mm) +
release price$ 1,395.00 (€ 1,255.50, £ 1,129.95, ¥ 144,145.35) +
seriesUltraSPARC-I +
technologyCMOS +
thread count1 +
transistor count5,200,000 +
word size64 bit (8 octets, 16 nibbles) +