Alpha software: FOSSbench scores have not yet been tested to be 100% accurate.
FOSSbench

Individual benchmark run

Intel(R) Core(TM) Ultra 9 275HX

83F5 · tested Aug 27, 2026, 5:07 PM

In Review · not yet included in the processor average

C score267,457ASM score: 198,901

System information

Processor
Intel(R) Core(TM) Ultra 9 275HX
Computer model
83F5
Architecture
x86-64
Physical cores reported by run
24
Hardware threads reported by run
24
L1 cache
64 MB
L2 cache
4,096 MB
L3 cache
36,864 MB
Memory
32,189 MB
Operating system
Windows 10.0 (build 26200)
Kernel
NT 10.0 build 26200
Compiler
GCC 13-win32
FOSSbench version
0.4.2
Total test time
1 min 16 sec

Score summary

C multi-core267,457
C single-core21,119
ASM multi-core198,901
ASM single-core14,002

Test environment

Background monitoring
Available
Average background CPU use
3.7%
Peak background CPU use
5.7%
Available memory before test
21,606 MB
Running processes
304
Activity sample duration
10 seconds

Individual workload results

WorkloadRunMeasured performanceRaw throughputScoreElapsedIterationsThreadsChecksum
Native Integer Mathcommon 32-bit multiply/add/rotate mix10% of overall scoreMulti-core164,418.99 Mops/s164,418.99 million work units/sec532,7900.54 seconds2,3012438824131768
Single-core9,853.82 Mops/s9,853.82 million work units/sec31,9310.52 seconds3,18512061862039
Wide Integer Math64-bit ALU: imul, mul, div, bitops10% of overall scoreMulti-core154,612.75 Mops/s154,612.75 million work units/sec501,0130.48 seconds1,2892418036715198661449888
Single-core8,293.79 Mops/s8,293.79 million work units/sec26,8760.56 seconds1,93411003833297048177299
Floating Point Mathdouble: mulsd/addsd, divsd, sqrtsd10% of overall scoreMulti-core82,303.15 Mops/s82,303.15 million work units/sec489,3170.5 seconds85924260508589757154768
Single-core4,711.43 Mops/s4,711.43 million work units/sec28,0110.52 seconds1,22414622540543000602686
Prime Numberssieve of Eratosthenes to 2M10% of overall scoreMulti-core13,248.08 Mcand/s13,248.08 million work units/sec163,1540.49 seconds13624486117312
Single-core1,074.8 Mcand/s1,074.8 million work units/sec13,2360.51 seconds275140956575
Extended InstructionsSSE2: 128-bit integer + float10% of overall scoreMulti-core352,703.93 Mops/s352,703.93 million work units/sec536,3500.52 seconds2,3862479946092152
Single-core23,674.61 Mops/s23,674.61 million work units/sec36,0020.52 seconds3,82611739582344
CompressionLZ77 match finder, 4 MiB corpus10% of overall scoreMulti-core12,988.49 MB/s12,988.49 million work units/sec192,7080.46 seconds59242378848848
Single-core674.39 MB/s674.39 million work units/sec10,0060.45 seconds731122638394
EncryptionChaCha20, 20 rounds, 1 MiB10% of overall scoreMulti-core13,778.5 MB/s13,778.5 million work units/sec339,3720.48 seconds2652464234311384
Single-core691.71 MB/s691.71 million work units/sec17,0370.4 seconds26512676429641
Physics512-body direct-sum gravity10% of overall scoreMulti-core6,317.36 Mpair/s6,317.36 million work units/sec100,1170.51 seconds51424692785319815886304
Single-core474.16 Mpair/s474.16 million work units/sec7,5140.51 seconds92814630027044345533919
Sortingheapsort, 1M uint3210% of overall scoreMulti-core4,001.16 Mkey-cmp/s4,001.16 million work units/sec110,2250.5 seconds4240
Single-core262.2 Mkey-cmp/s262.2 million work units/sec7,2230.56 seconds714406560160959951765
Memory Latencydependent-load pointer chase, 16 MiB0% of overall scoreMulti-core111.39 ns/access215.47 million work units/sec27,2740.56 seconds524228265576
Single-core18.04 ns/access55.44 million work units/sec7,0180.52 seconds29111673680
Memory BandwidthSTREAM triad, 12 MiB working set per thread10% of overall scoreMulti-core72,657.69 MB/s72,657.69 million work units/sec227,0550.52 seconds1242425361224704
Single-core53,296.72 MB/s53,296.72 million work units/sec166,5520.5 seconds2,10911067930152