x86-64.net

Intel Atom and E-cores

Gracemont

Intel Gracemont (2021) supports x86-64-v3.

x86-64 level
x86-64-v3
Vendor
Intel
First products
2021
Products
Intel Processor N97, N100 and N200 and Core i3-N300 and N305 (Alder Lake-N); the E-cores of 12th to 14th generation Core
Segments
mobileembedded
GCC target
-march=gracemont
Optimization
Optimizing code for Crestmont and Gracemont

The E-cores of Alder Lake and Raptor Lake (Linux calls the latter Enhanced Gracemont), also sold alone as Alder Lake-N.

Product lines

The product lines built on Gracemont, with the market segment the vendor sells each in and the sockets or soldered (BGA) packages its processors come in. Each socket links to the vendor page that states it.
Product lineSegmentSocketSource
Intel Processor N-series (Alder Lake-N)mobileBGA1264intel.com
Intel Processor N-series (Alder Lake-N)embeddedBGA1264intel.com
Core i3 N-series (Alder Lake-N)mobileBGA1264intel.com
Atom x7000E (Alder Lake-N)embeddedBGA1264intel.com
Intel Processor N-series (Twin Lake)mobileBGA1264intel.com
Core 3 N-series (Twin Lake)mobileBGA1264intel.com
Atom x7000REembeddedBGA1264intel.com

Why not x86-64-v4?

Gracemont lacks AVX512BW, AVX512CD, AVX512DQ, AVX512F and AVX512VL, all of which x86-64-v4 requires.

Feature checklist

Features required by each x86-64 level and whether Gracemont has them. OSFXSR and OSXSAVE are set by the operating system; the table checks the hardware features they depend on.
FeatureGracemontEnumerated byLinux flag
x86-64-v1
CMOVYesCPUID.01H:EDX[15]cmov
CX8YesCPUID.01H:EDX[8]cx8
FPUYesCPUID.01H:EDX[0]fpu
FXSRYesCPUID.01H:EDX[24]fxsr
MMXYesCPUID.01H:EDX[23]mmx
OSFXSR via FXSRYesCPUID.01H:EDX[24]fxsr
SCEYesCPUID.80000001H:EDX[11]syscall
SSEYesCPUID.01H:EDX[25]sse
SSE2YesCPUID.01H:EDX[26]sse2
x86-64-v2
CMPXCHG16BYesCPUID.01H:ECX[13]cx16
LAHF-SAHFYesCPUID.80000001H:ECX[0]lahf_lm
POPCNTYesCPUID.01H:ECX[23]popcnt
SSE3YesCPUID.01H:ECX[0]pni
SSE4.1YesCPUID.01H:ECX[19]sse4_1
SSE4.2YesCPUID.01H:ECX[20]sse4_2
SSSE3YesCPUID.01H:ECX[9]ssse3
x86-64-v3
AVXYesCPUID.01H:ECX[28]avx
AVX2YesCPUID.(EAX=07H,ECX=0):EBX[5]avx2
BMI1YesCPUID.(EAX=07H,ECX=0):EBX[3]bmi1
BMI2YesCPUID.(EAX=07H,ECX=0):EBX[8]bmi2
F16CYesCPUID.01H:ECX[29]f16c
FMAYesCPUID.01H:ECX[12]fma
LZCNTYesCPUID.80000001H:ECX[5]abm
MOVBEYesCPUID.01H:ECX[22]movbe
OSXSAVE via XSAVEYesCPUID.01H:ECX[26]xsave
x86-64-v4
AVX512FNoCPUID.(EAX=07H,ECX=0):EBX[16]avx512f
AVX512BWNoCPUID.(EAX=07H,ECX=0):EBX[30]avx512bw
AVX512CDNoCPUID.(EAX=07H,ECX=0):EBX[28]avx512cd
AVX512DQNoCPUID.(EAX=07H,ECX=0):EBX[17]avx512dq
AVX512VLNoCPUID.(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.

Known vulnerabilities

The CVEs that the sources of the vulnerability list name as affecting Gracemont, in all of its models or in some of them.

Sources

  1. GCC -march=gracemont (processor alias table)
  2. Intel 64 and IA-32 Architectures Software Developer's Manual, Volume 4, 335592-093, Table 2-1: Model 06_BEH: Intel Processor, Core i3 and Core 3 N-series and Atom x7000 series based on Gracemont.
  3. Intel ARK: Products formerly Alder Lake-N: Lists the N97, N100, N200, Core i3-N300 and i3-N305.
  4. Intel ARK: Products formerly Alder Lake: Launch dates; the earliest is Q4'21 (Core i9-12900K).
  5. Linux 7.3 arch/x86/include/asm/intel-family.h: INTEL_ALDERLAKE (Golden Cove / Gracemont) and INTEL_RAPTORLAKE (Raptor Cove / Enhanced Gracemont)
  6. Linux 7.3 arch/x86/include/asm/intel-family.h: INTEL_ATOM_GRACEMONT, Alderlake N