Socket FM2+

Socket FM2+ (FM2b, FM2r2) is a CPU socket used by AMD's desktop "Kaveri" APUs (Steamroller-based) and Godavari APUs (Steamroller-based) to connect to the motherboard. The FM2+ has a slightly different pin configuration to Socket FM2 with two additional pin sockets. Socket FM2+ APUs are not compatible with Socket FM2 motherboards due to the aforementioned additional pins. However, socket FM2 APUs such as "Richland" and "Trinity" are compatible with the FM2+ socket.[1]

• ECC DIMMs are supported on Socket FP3 but not supported on the Socket FM2+ package. GDDR5 or HBM memory are not supported.[2]
• There are 3 PCI Express cores: one 2 ×16 core and two 5 ×8 cores. There are 8 configurable ports, which can be divided into 2 groups:
  • Gfx-group: contains 2 ×8 ports. Each port can be limited to lower link widths for applications that require fewer lanes. Additionally, the two ports can be combined to create a single ×16 link.
  • GPP-group: contains 1 ×4 UMI and 5 General Purpose Ports (GPP).

Socket FM2+

Type	µPGA-ZIF
Chip form factors	PGA
Contacts	906
Predecessor	FM2
Successor	AM4
This article is part of the CPU socket series

All PCIe links are capable of supporting PCIe 2.x data rates. In addition, the Gfx link is capable of supporting PCIe 3.x data rate.[2]

For available chipsets consult Fusion controller hubs (FCH).

Its mobile counterpart is Socket FP3 (µBGA906).

Heatsink

The 4 holes for fastening the heatsink to the motherboard are placed in a rectangle with lateral lengths of 48 mm and 96 mm for AMD's sockets Socket AM2, Socket AM2+, Socket AM3, Socket AM3+ and Socket FM2. Cooling solutions should therefore be interchangeable.

Feature overview

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

Codename	Server	Basic					Toronto
		Micro												Kyoto
	Desktop	Mainstream					Carrizo	Bristol Ridge	Raven Ridge	Picasso	Renoir
		Entry	Llano	Trinity	Richland	Kaveri
		Basic												Kabini
	Mobile	Performance									Renoir
		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				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	Jun 2015	Jun 2016	Oct 2017	Jan 2019	Mar 2020		Jan 2011	May 2013	Apr 2014	May 2015	Feb 2016	Apr 2019
CPU microarchitecture			K10	Piledriver		Steamroller	Excavator	"Excavator+"[3]	Zen	Zen+	Zen 2		Bobcat	Jaguar	Puma	Puma+[4]	"Excavator+"	Zen
ISA			x86-64										x86-64
Socket	Desktop	High-end	N/A										N/A
		Mainstream	N/A				AM4
		Entry	FM1	FM2		FM2+[lower-alpha 1]		N/A
		Basic	N/A										N/A	AM1	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[5]		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		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 2]			1										1
Max CPU[lower-alpha 3] 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 4]			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 5]	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		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[6]				TeraScale 2 (VLIW5)	GCN 2nd gen			GCN 3rd gen[6]	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 6]			480	614.4	648.1	886.7	1134.5		1760	1971.2	2150.4		86	?	?	?	345.6	460.8
3D engine[lower-alpha 7]			Up to 400:20:8	Up to 384:24:6		Up to 512:32:8			Up to 704:44:16[7]		Up to 512:?:?		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[8]			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
GPU power saving			PowerPlay	PowerTune								PowerPlay	PowerTune[9]
TrueAudio			N/A			[10]						N/A
FreeSync						1 2							1 2
HDCP[lower-alpha 8]			?			1.4			1.4 2.2			?	1.4				1.4 2.2
PlayReady[lower-alpha 8]			N/A						3.0 not yet			N/A					3.0 not yet
Supported displays[lower-alpha 9]			2–3	2–4			3		3 (desktop) 4 (mobile, embedded)		4	2				3	4
/drm/radeon[lower-alpha 10][12][13]								N/A								N/A
/drm/amdgpu[lower-alpha 10][14]			N/A			[15]						N/A	[15]

1. APU models: A8-7680, A6-7480. CPU only: Athlon X4 845.
2. A PC would be one node.
3. An APU combines a CPU and a GPU. Both have cores.
4. Requires firmware support.
5. No SSE4. No SSSE3.
6. Single-precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.
7. Unified shaders : texture mapping units : render output units
8. 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.
9. To feed more than two displays, the additional panels must have native DisplayPort support.[11] Alternatively active DisplayPort-to-DVI/HDMI/VGA adapters can be employed.
10. DRM (Direct Rendering Manager) is a component of the Linux kernel. Support in this table refers to the most current version.

External links

1. Niels Broekhuijsen. "Report: Upcoming Socket FM2+ Will Support Older Trinity and Richland APUs". Tom's Hardware.
2. "49125_15h_Models_30h-3Fh_BKDG" (pdf). AMD.
3. "AMD Announces the 7th Generation APU: Excavator mk2 in Bristol Ridge and Stoney Ridge for Notebooks". 31 May 2016. Retrieved 3 January 2020.
4. "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.
5. "The Mobile CPU Comparison Guide Rev. 13.0 Page 5 : AMD Mobile CPU Full List". TechARP.com. Retrieved 13 December 2017.
6. "AMD VEGA10 and VEGA11 GPUs spotted in OpenCL driver". VideoCardz.com. Retrieved 6 June 2017.
7. 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.
8. Larabel, Michael (17 November 2017). "Radeon VCN Encode Support Lands in Mesa 17.4 Git". Phoronix. Retrieved 20 November 2017.
9. Tony Chen; Jason Greaves, "AMD's Graphics Core Next (GCN) Architecture" (PDF), AMD, retrieved 13 August 2016
10. "A technical look at AMD's Kaveri architecture". Semi Accurate. Retrieved 6 July 2014.
11. "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.
12. Airlie, David (26 November 2009). "DisplayPort supported by KMS driver mainlined into Linux kernel 2.6.33". Retrieved 16 January 2016.
13. "Radeon feature matrix". freedesktop.org. Retrieved 10 January 2016.
14. Deucher, Alexander (16 September 2015). "XDC2015: AMDGPU" (PDF). Retrieved 16 January 2016.
15. Michel Dänzer (17 November 2016). "[ANNOUNCE] xf86-video-amdgpu 1.2.0". lists.x.org.