Alpha software: FOSSbench scores have not yet been tested to be 100% accurate.
FOSSbench
Results›AMD Ryzen 9 3900X 12-Core Processor›Individual run

Individual benchmark run

AMD Ryzen 9 3900X 12-Core Processor

AMD Ryzen 9 3900X 12-Core Processor · tested Jul 21, 2026, 1:44 AM · uploaded by @nova

Admin reviewed · included in the processor average

C score146,808ASM score: 114,984

System information

Processor
AMD Ryzen 9 3900X 12-Core Processor
Computer model
AMD Ryzen 9 3900X 12-Core Processor
Architecture
x86-64
Physical cores reported by run
12
Hardware threads reported by run
24
L1 cache
64 MB
L2 cache
512 MB
L3 cache
16,384 MB
Memory
15,913 MB
Operating system
Chimera Linux
Kernel
Linux 7.1.2-0-generic
Compiler
Clang 22.1.7
FOSSbench version
0.4.0
Total test time
1 min 16 sec

Score summary

C multi-core146,808
C single-core14,917
ASM multi-core114,984
ASM single-core10,821

Test environment

Background monitoring
Available
Average background CPU use
3.6%
Peak background CPU use
8.9%
Available memory before test
12,776 MB
Running processes
675
Activity sample duration
10 seconds

Individual workload results

WorkloadRunMeasured performanceRaw throughputScoreElapsedIterationsThreadsChecksum
Native Integer Mathcommon 32-bit multiply/add/rotate mix10% of overall scoreMulti-core100,332.39 Mops/s100,332.39 million work units/sec325,1210.49 seconds1,2892422428554136
Single-core7,430.57 Mops/s7,430.57 million work units/sec24,0780.52 seconds2,3921115035212
Wide Integer Math64-bit ALU: imul, mul, div, bitops10% of overall scoreMulti-core127,051.64 Mops/s127,051.64 million work units/sec411,7030.52 seconds1,143249834255880740662184
Single-core7,158.65 Mops/s7,158.65 million work units/sec23,1970.43 seconds1,289113817973518821826140
Floating Point Mathdouble: mulsd/addsd, divsd, sqrtsd10% of overall scoreMulti-core29,160.31 Mops/s29,160.31 million work units/sec173,3670.5 seconds30224260508589757154768
Single-core1,496.16 Mops/s1,496.16 million work units/sec8,8950.52 seconds39114622540543000602686
Prime Numberssieve of Eratosthenes to 2M10% of overall scoreMulti-core10,375.86 Mcand/s10,375.86 million work units/sec127,7820.51 seconds11024393183120
Single-core940.17 Mcand/s940.17 million work units/sec11,5780.52 seconds245136488585
Extended InstructionsSSE2: 128-bit integer + float10% of overall scoreMulti-core206,257.55 Mops/s206,257.55 million work units/sec313,6520.45 seconds1,2212447612452680
Single-core15,924.89 Mops/s15,924.89 million work units/sec24,2170.52 seconds2,58611474206579
CompressionLZ77 match finder, 4 MiB corpus10% of overall scoreMulti-core11,603.94 MB/s11,603.94 million work units/sec172,1650.5 seconds58242338529376
Single-core679.98 MB/s679.98 million work units/sec10,0890.45 seconds731122638394
EncryptionChaCha20, 20 rounds, 1 MiB10% of overall scoreMulti-core8,549.32 MB/s8,549.32 million work units/sec210,5740.54 seconds1832459474436000
Single-core672.47 MB/s672.47 million work units/sec16,5630.41 seconds26512676429641
Physics512-body direct-sum gravity10% of overall scoreMulti-core3,051.74 Mpair/s3,051.74 million work units/sec48,3640.47 seconds23024651591897058164936
Single-core248.82 Mpair/s248.82 million work units/sec3,9430.52 seconds49214639165524639432986
Sortingheapsort, 1M uint3210% of overall scoreMulti-core2,281.1 Mkey-cmp/s2,281.1 million work units/sec62,8400.44 seconds2240
Single-core225.76 Mkey-cmp/s225.76 million work units/sec6,2190.56 seconds610
Memory Latencydependent-load pointer chase, 16 MiB0% of overall scoreMulti-core132.81 ns/access180.71 million work units/sec22,8740.53 seconds424200992264
Single-core30.87 ns/access32.4 million work units/sec4,1010.62 seconds20152536
Memory BandwidthSTREAM triad, 12 MiB working set per thread10% of overall scoreMulti-core14,522.52 MB/s14,522.52 million work units/sec45,3830.54 seconds262425307610624
Single-core30,567.62 MB/s30,567.62 million work units/sec95,5240.52 seconds1,26111059497808