Gracemont (microarchitecture)

Gracemont
General information
Launched	November 4, 2021[1]November 4, 2021
Marketed by	Intel
Designed by	Intel
Common manufacturer(s)	Intel;
Performance
Max. CPU clock rate	0.7 GHz to 4.3 GHz
Cache
L1 cache	96 KB per core: ; 64 KB instructions; 32 KB data;
L2 cache	2 or 4 MB per module
L3 cache	3 MB per module
Architecture and classification
Instruction set	x86-64
Extensions	MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE4.1, SSE4.2, AVX, AVX2, FMA3, AVX-VNNI, AES-NI, CLMUL, RDRAND, SHA, TXT, VT-d, VT-x;
Physical specifications
Cores	4 per module;
Products, models, variants
Product code name(s)	Alder Lake (client); Raptor Lake (client); Sierra Forest (server);
History
Predecessor	Tremont
Successor	Crestmont

Gracemont is a microarchitecture for low-power processors used in systems on a chip (SoCs) made by Intel, and is the successor to Tremont. Like its predecessor, it is also implemented as low-power cores in a hybrid design of the Alder Lake and Raptor Lake processors.[2]

Design

Gracemont is the fourth generation out-of-order low-power Atom microarchitecture, built on the Intel 7 manufacturing process.[3]

The Gracemont microarchitecture has the following enhancements over Tremont:[4][3]

Level 1 cache per core:
- eight-way-associative 64 KB instruction cache
- eight-way-associative 32 KB data cache
New On-Demand Instruction Length Decoder
Instruction issue increased to five per clock (from four)
Instruction retire increased to eight per clock (from seven)
Execution ports (functional units) there are now 17 (from eight)
Reorder buffer increased to 256 entries (from 208)
Improved branch prediction
Support for AVX, AVX2, FMA3 and AVX-VNNI instructions[5]

Technology

System on a chip (SoC) architecture
3D tri-gate transistors
64 KB L1 instruction cache, up from 32 KB in Tremont[3]
2 or 4 MB shared L2 cache per 4-core module[3] Alder Lake-S/H/P/U family has 2 MB. Raptor Lake-S/H/P/U family has 4 MB.
Intel Xe (Gen. 12.2) GPU with DirectX 12, OpenGL 4.6, Vulkan 1.3, OpenGL ES 3.2 and OpenCL 3.0 support.[6]
Thermal design power (TDP)
- 10 W desktop processors
- 6 W mobile processors

List of Gracemont processors

The microarchitecture is used as the efficient cores of the 12th generation of Intel Core hybrid processors (codenamed "Alder Lake") and the 13th generation of Intel Core hybrid processors (codenamed "Raptor Lake"). It's used exclusively in the Alder Lake-N line-up.

Alder Lake-N

List of Alder Lake-N processors as follows:[7]

Target segment	Processor branding & model		Cores (threads)	Clock rate (GHz)		GPU				Cache		TDP		Release date	Price (USD)
				Base	Turbo	Model	EUs	Clock rate (GHz)		L2	L3	Base	cTDP Down
				Base	Turbo	Model	EUs	Base	Turbo	L2	L3	Base	cTDP Down
Mobile & Embedded	i3	N305	8 (8)	1.8	3.8	UHD Graphics	32	?	1.25	2 MB	6 MB	15 W	9 W	Q1 2023	$309
Mobile	i3	N300	8 (8)	1.1	3.8				1.25			7 W	—		$309
Mobile & Embedded	Intel Processor	N200	4 (4)	1.0	3.7				0.75			6 W			$193
Mobile		N100		0.8	3.4		24		0.75			6 W			$128
Embedded		N97		2.0	3.6		24	0.85	1.2			12 W			$128
		N95		1.7	3.4		16	?	1.2			15 W			?
		N50	2 (2)	1.0	3.4		16	0.6	0.75			6 W			$128
	Atom	x7425E	4 (4)	1.5	3.4		24	0.8	1.0			12 W			$58
		x7213E	2 (2)	1.7	3.2		16	0.8				10 W			$47
		x7211E	2 (2)	1.0	3.2		16	0.6				6 W			$39

Processors for base transceiver stations (Grand Ridge)

References

Cutress, Ian (October 27, 2021). "Intel 12th Gen Core Alder Lake for Desktops: Top SKUs Only, Coming November 4th". AnandTech. Retrieved September 14, 2022.
Cutress, Ian (August 14, 2020). "Intel Alder Lake: Confirmed x86 Hybrid with Golden Cove and Gracemont for 2021". AnandTech. Retrieved September 14, 2022.
Cutress, Ian; Frumusanu, Andrei (August 19, 2021). "Intel Architecture Day 2021: Alder Lake, Golden Cove, and Gracemont Detailed". AnandTech. Retrieved August 31, 2022.
"Gracemont – Microarchitectures – Intel". WikiChip. Retrieved September 14, 2022.
Shilov, Anton (October 7, 2020). "Intel's Upcoming Gracemont Microarchitecture to Support AVX, AVX2, and AVX-VNNI". Tom's Hardware. Retrieved September 14, 2022.
"Intel® Processor Graphics Xᵉ-LP API Developer and Optimization Guide". Intel. Retrieved September 14, 2022.
"Products formerly Alder Lake-N".

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[1] Cutress, Ian (October 27, 2021). "Intel 12th Gen Core Alder Lake for Desktops: Top SKUs Only, Coming November 4th". AnandTech. Retrieved September 14, 2022.

[2] Cutress, Ian (August 14, 2020). "Intel Alder Lake: Confirmed x86 Hybrid with Golden Cove and Gracemont for 2021". AnandTech. Retrieved September 14, 2022.

[anandtech-deep-dive-into-alder-lake-3] Cutress, Ian; Frumusanu, Andrei (August 19, 2021). "Intel Architecture Day 2021: Alder Lake, Golden Cove, and Gracemont Detailed". AnandTech. Retrieved August 31, 2022.

[wikichip-4] "Gracemont – Microarchitectures – Intel". WikiChip. Retrieved September 14, 2022.

[tomshardware_1-5] Shilov, Anton (October 7, 2020). "Intel's Upcoming Gracemont Microarchitecture to Support AVX, AVX2, and AVX-VNNI". Tom's Hardware. Retrieved September 14, 2022.

[6] "Intel® Processor Graphics Xᵉ-LP API Developer and Optimization Guide". Intel. Retrieved September 14, 2022.

[7] "Products formerly Alder Lake-N".