Socket FM1

Socket FM1 is a CPU socket for desktop computers used by AMD early A-series APUs ("Llano") processors and Llano-derived Athlon II processors. It was released in July 2011. Its direct successors are Socket FM2 (September 2012) and Socket FM2+ (January 2014), while Socket AM1 (January 2014) is targeting low-power SoCs.

Socket FM1

Type	PGA-ZIF
Chip form factors	PGA
Contacts	905
FSB protocol	Unified Media Interface (UMI)
FSB frequency	100 MHz System clock UMI up to 5,2 GT/s
Processors	early A-series APUs
Successor	FM2
This article is part of the CPU socket series

Chipsets

For available chipsets consult Fusion controller hubs (FCH).

Available APUs

APU's using Socket FM1 are AMD's Lynx platform.

Please consult List of AMD accelerated processing units for concrete product denominations.

Feature overview for AMD APUs

The following table shows features of AMD's APUs (see also: List of AMD accelerated processing units).

Codename	Server	Basic						Toronto
		Micro														Kyoto
	Desktop	Performance										Renoir
		Mainstream	Llano	Trinity	Richland	Kaveri	Kaveri Refresh (Godavari)	Carrizo	Bristol Ridge	Raven Ridge	Picasso
		Entry
		Basic														Kabini
	Mobile	Performance										Renoir	Cezanne
		Mainstream	Llano	Trinity	Richland	Kaveri		Carrizo	Bristol Ridge	Raven Ridge	Picasso
		Entry																		Dalí
		Basic													Desna, Ontario, Zacate	Kabini, Temash	Beema, Mullins	Carrizo-L	Stoney Ridge
	Embedded			Trinity		Bald Eagle		Merlin Falcon, Brown Falcon		Great Horned Owl		Grey Hawk			Ontario, Zacate	Kabini	Steppe Eagle, Crowned Eagle, LX-Family		Prairie Falcon	Banded Kestrel
Platform			High, standard and low power												Low and ultra-low power
Released			Aug 2011	Oct 2012	Jun 2013	Jan 2014	2015	Jun 2015	Jun 2016	Oct 2017	Jan 2019	Mar 2020	Jan 2021		Jan 2011	May 2013	Apr 2014	May 2015	Feb 2016	Apr 2019
CPU microarchitecture			K10	Piledriver		Steamroller		Excavator	"Excavator+"[1]	Zen	Zen+	Zen 2	Zen 3		Bobcat	Jaguar	Puma	Puma+[2]	"Excavator+"	Zen
ISA			x86-64												x86-64
Socket	Desktop	High-end	N/A
		Mainstream	N/A				FM2+[lower-alpha 1]		AM4
		Entry	FM1	FM2		FM2+[lower-alpha 2]										AM1
		Basic	N/A												N/A
	Other		FS1	FS1+, FP2		FP3		FP4		FP5		FP6			FT1	FT3	FT3b		FP4	FP5
PCI Express version			2.0			3.0						4.0			2.0				3.0
Fab. (nm)			GF 32SHP (HKMG SOI)			GF 28SHP (HKMG bulk)				GF 14LPP (FinFET bulk)	GF 12LP (FinFET bulk)	TSMC N7 (FinFET bulk)			TSMC N40 (bulk)	TSMC N28 (HKMG bulk)	GF 28SHP (HKMG bulk)			GF 14LPP (FinFET bulk)
Die area (mm^2)			228	246		245		245	250	210[3]		156	?		75 (+ 28 FCH)	107		?	125	149
Min TDP (W)			35	17				12				10			4.5	4	3.95	10	6
Max APU TDP (W)			100			95		65							18	25
Max stock APU base clock (GHz)			3	3.8	4.1	4.1		3.7	3.8	3.6	3.7	3.8	?		1.75	2.2	2	2.2	3.2	3.3
Max APUs per node[lower-alpha 3]			1												1
Max CPU[lower-alpha 4] cores per APU			4									8			2	4			2
Max threads per CPU core			1							2					1					2
Integer structure			3+3	2+2						4+2		4+2+1	?		1+1+1+1				2+2	4+2
i386, i486, i586, CMOV, NOPL, i686, PAE, NX bit, CMPXCHG16B, AMD-V, RVI, ABM, and 64-bit LAHF/SAHF
IOMMU[lower-alpha 5]			N/A
BMI1, AES-NI, CLMUL, and F16C														N/A
MOVBE			N/A
AVIC, BMI2 and RDRAND															N/A
ADX, SHA, RDSEED, SMAP, SMEP, XSAVEC, XSAVES, XRSTORS, CLFLUSHOPT, and CLZERO			N/A										N/A
WBNOINVD, CLWB, RDPID, RDPRU, and MCOMMIT			N/A															N/A
FPUs per core			1	0.5						1				1				0.5	1
Pipes per FPU			2											2
FPU pipe width			128-bit									256-bit		80-bit	128-bit
CPU instruction set SIMD level			SSE4a[lower-alpha 6]	AVX				AVX2						SSSE3	AVX			AVX2
3DNow!			3DNow!+	N/A										N/A
PREFETCH/PREFETCHW
FMA4, LWP, TBM, and XOP			N/A						N/A				N/A					N/A
FMA3
L1 data cache per core (KiB)			64	16				32						32
L1 data cache associativity (ways)			2	4				8						8
L1 instruction caches per core			1	0.5						1				1				0.5	1
Max APU total L1 instruction cache (KiB)			256	128		192				256		512		64	128			96	128
L1 instruction cache associativity (ways)			2			3				4		8		2				3	4
L2 caches per core			1	0.5						1				1				0.5	1
Max APU total L2 cache (MiB)			4					2				4		1	2			1
L2 cache associativity (ways)			16							8				16					8
APU total L3 cache (MiB)			N/A						4		8		N/A					4
APU L3 cache associativity (ways)									16									16
L3 cache scheme			Victim			N/A			Victim									Victim
Max stock DRAM support			DDR3-1866		DDR3-2133			DDR3-2133, DDR4-2400	DDR4-2400	DDR4-2933		DDR4-3200, LPDDR4-4266	LPDDR4-4266	DDR3L-1333	DDR3L-1600	DDR3L-1866		DDR3-1866, DDR4-2400	DDR4-2400
Max DRAM channels per APU			2											1					2
Max stock DRAM bandwidth (GB/s) per APU			29.866		34.132			38.400		46.932		68.256	?	10.666	12.800	14.933		19.200	38.400
GPU microarchitecture			TeraScale 2 (VLIW5)	TeraScale 3 (VLIW4)		GCN 2nd gen		GCN 3rd gen		GCN 5th gen[4]				TeraScale 2 (VLIW5)	GCN 2nd gen			GCN 3rd gen[4]	GCN 5th gen
GPU instruction set			TeraScale instruction set			GCN instruction set								TeraScale instruction set	GCN instruction set
Max stock GPU base clock (MHz)			600	800	844	866		1108		1250	1400	2100	?	538	600	?	847	900	1200
Max stock GPU base GFLOPS[lower-alpha 7]			480	614.4	648.1	886.7		1134.5		1760	1971.2	2150.4	?	86	?	?	?	345.6	460.8
3D engine[lower-alpha 8]			Up to 400:20:8	Up to 384:24:6		Up to 512:32:8				Up to 704:44:16[5]		Up to 512:32:8	?	80:8:4	128:8:4			Up to 192:?:?	Up to 192:?:?
			IOMMUv1			IOMMUv2								IOMMUv1			?		IOMMUv2
Video decoder			UVD 3.0			UVD 4.2		UVD 6.0		VCN 1.0[6]		VCN 2.0[7]		UVD 3.0	UVD 4.0	UVD 4.2	UVD 6.0	UVD 6.3	VCN 1.0
Video encoder			N/A	VCE 1.0		VCE 2.0		VCE 3.1						N/A	VCE 2.0		VCE 3.1
AMD Fluid Motion
GPU power saving			PowerPlay	PowerTune										PowerPlay	PowerTune[8]
TrueAudio			N/A			[9]							N/A
FreeSync						1 2									1 2
HDCP[lower-alpha 9]			?			1.4				1.4 2.2				?	1.4				1.4 2.2
PlayReady[lower-alpha 9]			N/A						3.0 not yet				N/A					3.0 not yet
Supported displays[lower-alpha 10]			2–3	2–4				3		3 (desktop) 4 (mobile, embedded)		4		2				3	4
/drm/radeon[lower-alpha 11][11][12]								N/A									N/A
/drm/amdgpu[lower-alpha 11][13]			N/A			[14]								N/A	[14]

1. For FM2+ Excavator models: A8-7680, A6-7480 & Athlon X4 845.
2. For FM2+ Excavator models: A8-7680, A6-7480 & Athlon X4 845.
3. A PC would be one node.
4. An APU combines a CPU and a GPU. Both have cores.
5. Requires firmware support.
6. No SSE4. No SSSE3.
7. Single-precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.
8. Unified shaders : texture mapping units : render output units
9. To play protected video content, it also requires card, operating system, driver, and application support. A compatible HDCP display is also needed for this. HDCP is mandatory for the output of certain audio formats, placing additional constraints on the multimedia setup.
10. To feed more than two displays, the additional panels must have native DisplayPort support.[10] Alternatively active DisplayPort-to-DVI/HDMI/VGA adapters can be employed.
11. DRM (Direct Rendering Manager) is a component of the Linux kernel. Support in this table refers to the most current version.

See also

• Family 12h microarchitecture
• Comparison of AMD chipsets#Fusion controller hubs (FCH)
• List of FM1 Processors

References

1. "AMD Announces the 7th Generation APU: Excavator mk2 in Bristol Ridge and Stoney Ridge for Notebooks". 31 May 2016. Retrieved 3 January 2020.
2. "AMD Mobile "Carrizo" Family of APUs Designed to Deliver Significant Leap in Performance, Energy Efficiency in 2015" (Press release). 20 November 2014. Retrieved 16 February 2015.
3. "The Mobile CPU Comparison Guide Rev. 13.0 Page 5 : AMD Mobile CPU Full List". TechARP.com. Retrieved 13 December 2017.
4. "AMD VEGA10 and VEGA11 GPUs spotted in OpenCL driver". VideoCardz.com. Retrieved 6 June 2017.
5. Cutress, Ian (1 February 2018). "Zen Cores and Vega: Ryzen APUs for AM4 – AMD Tech Day at CES: 2018 Roadmap Revealed, with Ryzen APUs, Zen+ on 12nm, Vega on 7nm". Anandtech. Retrieved 7 February 2018.
6. Larabel, Michael (17 November 2017). "Radeon VCN Encode Support Lands in Mesa 17.4 Git". Phoronix. Retrieved 20 November 2017.
7. Liu, Leo (2020-09-04). "Add Renoir VCN decode support". Retrieved 2020-09-11. It has same VCN2.x block as Navi1x
8. Tony Chen; Jason Greaves, "AMD's Graphics Core Next (GCN) Architecture" (PDF), AMD, retrieved 13 August 2016
9. "A technical look at AMD's Kaveri architecture". Semi Accurate. Retrieved 6 July 2014.
10. "How do I connect three or More Monitors to an AMD Radeon™ HD 5000, HD 6000, and HD 7000 Series Graphics Card?". AMD. Retrieved 8 December 2014.
11. Airlie, David (26 November 2009). "DisplayPort supported by KMS driver mainlined into Linux kernel 2.6.33". Retrieved 16 January 2016.
12. "Radeon feature matrix". freedesktop.org. Retrieved 10 January 2016.
13. Deucher, Alexander (16 September 2015). "XDC2015: AMDGPU" (PDF). Retrieved 16 January 2016.
14. Michel Dänzer (17 November 2016). "[ANNOUNCE] xf86-video-amdgpu 1.2.0". lists.x.org.

• http://www.tomshardware.com/news/amd-llano-socket-fm1-sample,12549.html
• https://www.amd.com/us/products/desktop/processors/a-series/Pages/a-series-model-number-comparison.aspx