Alpha software: FOSSbench scores have not yet been tested to be 100% accurate.
FOSSbench
Results›Pentium II (Klamath)›Individual run

Individual benchmark run

Pentium II (Klamath)

Pentium II (Klamath) · tested Sep 25, 2026, 11:25 AM

In Review · not yet included in the processor average

C score52ASM score: 48

System information

Processor
Pentium II (Klamath)
Computer model
Pentium II (Klamath)
Architecture
x86 32-bit
Physical cores reported by run
1
Hardware threads reported by run
1
L1 cache
1 KB
L2 cache
1 KB
L3 cache
1 KB
Memory
174 MB
Operating system
Debian GNU/Linux 13 (trixie)
Kernel
Linux 5.10.240-antix.1-486-smp
Compiler
GCC 13.3.0
FOSSbench version
0.4.2
Total test time
8 min 36 sec

Score summary

C multi-core52
C single-core53
ASM multi-core48
ASM single-core50

Test environment

Background monitoring
Available
Average background CPU use
95.4%
Peak background CPU use
100%
Available memory before test
69 MB
Running processes
141
Activity sample duration
10 seconds

Individual workload results

WorkloadRunMeasured performanceRaw throughputScoreElapsedIterationsThreadsChecksum
Native Integer Mathcommon 32-bit multiply/add/rotate mix10% of overall scoreMulti-core40.18 Mops/s40.18 million work units/sec1300.8 seconds2014010397273
Single-core21.17 Mops/s21.17 million work units/sec691.51 seconds2014010397273
Wide Integer Mathi386 integer ALU and software 64-bit arithmetic10% of overall scoreMulti-core7.08 Mops/s7.08 million work units/sec236.78 seconds2013938958640199854493
Single-core7.34 Mops/s7.34 million work units/sec246.54 seconds2013938958640199854493
Floating Point Mathx87 scalar double-precision floating point10% of overall scoreMulti-core5.71 Mops/s5.71 million work units/sec347 seconds2014622540543000602686
Single-core7.01 Mops/s7.01 million work units/sec425.7 seconds2014622540543000602686
Prime Numberssieve of Eratosthenes to 2M10% of overall scoreMulti-core1 Mcand/s1 million work units/sec122.01 seconds11148933
Single-core1.08 Mcand/s1.08 million work units/sec131.85 seconds11148933
Extended Instructionsscalar extended-instruction fallback10% of overall scoreMulti-core106.09 Mops/s106.09 million work units/sec1610.54 seconds1813432378859
Single-core105.16 Mops/s105.16 million work units/sec1601.43 seconds4713737122991
CompressionLZ77 match finder, 4 MiB corpus10% of overall scoreMulti-core3.22 MB/s3.22 million work units/sec481.3 seconds111679978
Single-core6.16 MB/s6.16 million work units/sec910.68 seconds111679978
EncryptionChaCha20, 20 rounds, 1 MiB10% of overall scoreMulti-core5.5 MB/s5.5 million work units/sec1350.76 seconds411153311051
Single-core4.19 MB/s4.19 million work units/sec1031 seconds411153311051
Physics512-body direct-sum gravity10% of overall scoreMulti-core1.02 Mpair/s1.02 million work units/sec161.02 seconds414631870538803682900
Single-core1.61 Mpair/s1.61 million work units/sec260.65 seconds414631870538803682900
Sortingheapsort, 1M uint3210% of overall scoreMulti-core1.34 Mkey-cmp/s1.34 million work units/sec3715.59 seconds114406560160959951765
Single-core1.26 Mkey-cmp/s1.26 million work units/sec3516.7 seconds114406560160959951765
Memory Latencydependent-load pointer chase, 8 MiB0% of overall scoreMulti-core1,329.34 ns/access0.75 million work units/sec951.33 seconds118195220
Single-core974.98 ns/access1.03 million work units/sec1300.97 seconds118195220
Memory BandwidthSTREAM triad, 12 MiB working set per thread10% of overall scoreMulti-core54.55 MB/s54.55 million work units/sec1703.69 seconds1611065620608
Single-core43.6 MB/s43.6 million work units/sec1364.62 seconds1611065620608