Intel Xeon (server)
Ice Lake (server)
Intel Ice Lake (server) (2021) supports x86-64-v4.
- x86-64 level
- x86-64-v4
- Vendor
- Intel
- First products
- 2021
- Products
- 3rd generation Xeon Scalable
- Segments
- GCC target
-march=icelake-server- Optimization
- Optimizing code for Ice Lake to Rocket Lake
Product lines
Feature checklist
| Feature | Ice Lake (server) | Enumerated by | Linux flag |
|---|---|---|---|
| x86-64-v1 | |||
| CMOV | Yes | CPUID.01H:EDX[15] | cmov |
| CX8 | Yes | CPUID.01H:EDX[8] | cx8 |
| FPU | Yes | CPUID.01H:EDX[0] | fpu |
| FXSR | Yes | CPUID.01H:EDX[24] | fxsr |
| MMX | Yes | CPUID.01H:EDX[23] | mmx |
| OSFXSR via FXSR | Yes | CPUID.01H:EDX[24] | fxsr |
| SCE | Yes | CPUID.80000001H:EDX[11] | syscall |
| SSE | Yes | CPUID.01H:EDX[25] | sse |
| SSE2 | Yes | CPUID.01H:EDX[26] | sse2 |
| x86-64-v2 | |||
| CMPXCHG16B | Yes | CPUID.01H:ECX[13] | cx16 |
| LAHF-SAHF | Yes | CPUID.80000001H:ECX[0] | lahf_lm |
| POPCNT | Yes | CPUID.01H:ECX[23] | popcnt |
| SSE3 | Yes | CPUID.01H:ECX[0] | pni |
| SSE4.1 | Yes | CPUID.01H:ECX[19] | sse4_1 |
| SSE4.2 | Yes | CPUID.01H:ECX[20] | sse4_2 |
| SSSE3 | Yes | CPUID.01H:ECX[9] | ssse3 |
| x86-64-v3 | |||
| AVX | Yes | CPUID.01H:ECX[28] | avx |
| AVX2 | Yes | CPUID.(EAX=07H,ECX=0):EBX[5] | avx2 |
| BMI1 | Yes | CPUID.(EAX=07H,ECX=0):EBX[3] | bmi1 |
| BMI2 | Yes | CPUID.(EAX=07H,ECX=0):EBX[8] | bmi2 |
| F16C | Yes | CPUID.01H:ECX[29] | f16c |
| FMA | Yes | CPUID.01H:ECX[12] | fma |
| LZCNT | Yes | CPUID.80000001H:ECX[5] | abm |
| MOVBE | Yes | CPUID.01H:ECX[22] | movbe |
| OSXSAVE via XSAVE | Yes | CPUID.01H:ECX[26] | xsave |
| x86-64-v4 | |||
| AVX512F | Yes | CPUID.(EAX=07H,ECX=0):EBX[16] | avx512f |
| AVX512BW | Yes | CPUID.(EAX=07H,ECX=0):EBX[30] | avx512bw |
| AVX512CD | Yes | CPUID.(EAX=07H,ECX=0):EBX[28] | avx512cd |
| AVX512DQ | Yes | CPUID.(EAX=07H,ECX=0):EBX[17] | avx512dq |
| AVX512VL | Yes | CPUID.(EAX=07H,ECX=0):EBX[31] | avx512vl |
Other extensions
Notable extensions outside the x86-64 levels. Vendors sometimes disable these on individual models. Linked names lead to the extension's instructions.
- AES-NI
- PCLMULQDQ
- SHA
- RDRAND
- RDSEED
- ADX
- CLWB
- GFNI
- VAES
- VPCLMULQDQ
- AVX512-IFMA
- AVX512-VBMI
- AVX512-VBMI2
- AVX512-VNNI
- AVX512-BITALG
- AVX512-VPOPCNTDQ
Known vulnerabilities
The CVEs that the sources of the vulnerability list name as affecting Ice Lake (server), in all of its models or in some of them.
- CVE-2026-20917 Load Value Injection: Load Value Injection: zero data
- CVE-2025-31648 Intel processor errata: Microcode flow value handling
- CVE-2024-45332 Branch Privilege Injection: Indirect Branch Predictor Delayed Updates
- CVE-2024-36242 Intel processor errata: Sub-page permission
- CVE-2024-28956 Indirect Target Selection Some models
- CVE-2024-24968 Intel processor errata: Hardware logic state machines Some models
- CVE-2024-24853 Intel BIOS, UEFI and SMM: SMI Transfer Monitor transition order
- CVE-2024-23984 RAPL Energy Reporting: RAPL energy reporting (2024)
- CVE-2023-23583 Redundant Prefix Issue
- CVE-2023-22655 Intel SGX: Trusted Execution Configuration Register Access
- CVE-2022-40982 Gather Data Sampling
- CVE-2022-38090 Intel SGX: Stale data read from the legacy xAPIC under SGX
- CVE-2022-33972 Intel processor errata: Microcode keying calculation
- CVE-2022-26373 Spectre variant 2: Post-barrier Return Stack Buffer Predictions
- CVE-2022-21233 Stale Data Read from Legacy xAPIC
- CVE-2022-21166 Processor MMIO Stale Data: Device Register Partial Write
- CVE-2022-21151 Optimization Removal of Security-critical Code
- CVE-2022-0002 Spectre variant 2: Intra-mode Branch Target Injection
- CVE-2022-0001 Spectre variant 2: Branch History Injection
- CVE-2021-0089 Speculative Code Store Bypass
- CVE-2021-0086 Floating Point Value Injection
- CVE-2020-8695 RAPL Energy Reporting: RAPL energy reporting
- CVE-2019-1125 Spectre variant 1: Spectre v1 swapgs
- CVE-2018-3639 Speculative Store Bypass
- CVE-2017-5753 Spectre variant 1: Bounds Check Bypass
- CVE-2017-5715 Spectre variant 2: Branch Target Injection
Other Intel Xeon (server) microarchitectures
- Skylake-SP 2017 v4
- Cascade Lake 2019 v4
- Cooper Lake 2020 v4
- Ice Lake (server) 2021 v4
- Emerald Rapids 2023 v4
- Sapphire Rapids 2023 v4
- Granite Rapids 2024 v4
- Sierra Forest 2024 v3
- Clearwater Forest 2026 v3
- Diamond Rapids announced v4
Sources
- GCC -march=icelake-server feature set (PTA_ICELAKE_SERVER)
- Intel 64 and IA-32 Architectures Software Developer's Manual, Volume 4, 335592-093, Table 2-1: Models 06_6AH and 06_6CH: 3rd generation Xeon Scalable processors, Ice Lake.
- Intel ARK: Products formerly Ice Lake: Launch dates; the Xeon Scalable models start in Q2'21 (Xeon Gold 5318N).