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Socket FM2

Socket FM2 is a CPU socket used by AMD's desktop Trinity and Richland APUs to connect to the motherboard as well as Athlon X2 and Athlon X4 processors based on them. FM2 was launched on September 27, 2012.[1] Motherboards which feature the at the time new FM2 CPU socket also utilize AMD's at the time new A85X chipset.[2]

Socket FM2
TypePGA-ZIF
Chip form factorsPGA
Contacts904
FSB protocolUnified Media Interface (UMI)
PredecessorFM1
SuccessorFM2+
This article is part of the CPU socket series

The socket is very similar to FM1, based on a 31 × 31 grid of pins with a 5 × 7 central void, three pins missing from each corner, and a few additional key pins missing. Compared to Socket FM1, two key pins were moved, and one more is removed, leaving 904 pins.[3]

For available chipsets consult Fusion controller hubs (FCH).

Steamroller-based "Kaveri" APUs are not supported, see Socket FM2+ (FM2r2) and Socket FP3 (BGA-???).[4]

Heatsink

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The four 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

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The following table shows features of AMD's processors with 3D graphics, including APUs (see also: List of AMD processors with 3D graphics).

[ VisualEditor ]
Platform High, standard and low power Low and ultra-low power
Codename Server Basic Toronto
Micro Kyoto
Desktop Performance Raphael Phoenix
Mainstream Llano Trinity Richland Kaveri Kaveri Refresh (Godavari) Carrizo Bristol Ridge Raven Ridge Picasso Renoir Cezanne
Entry
Basic Kabini Dalí
Mobile Performance Renoir Cezanne Rembrandt Dragon Range
Mainstream Llano Trinity Richland Kaveri Carrizo Bristol Ridge Raven Ridge Picasso Renoir
Lucienne 		Cezanne
Barceló 		Phoenix
Entry Dalí Mendocino
Basic Desna, Ontario, Zacate Kabini, Temash Beema, Mullins Carrizo-L Stoney Ridge Pollock
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 River Hawk
Released Aug 2011 Oct 2012 Jun 2013 Jan 2014 2015 Jun 2015 Jun 2016 Oct 2017 Jan 2019 Mar 2020 Jan 2021 Jan 2022 Sep 2022 Jan 2023 Jan 2011 May 2013 Apr 2014 May 2015 Feb 2016 Apr 2019 Jul 2020 Jun 2022 Nov 2022
CPU microarchitecture K10 Piledriver Steamroller Excavator "Excavator+"[5] Zen Zen+ Zen 2 Zen 3 Zen 3+ Zen 4 Bobcat Jaguar Puma Puma+[6] "Excavator+" Zen Zen+ "Zen 2+"
ISA x86-64 v1 x86-64 v2 x86-64 v3 x86-64 v4 x86-64 v1 x86-64 v2 x86-64 v3
Socket Desktop Performance — AM5 — —
Mainstream — AM4 — —
Entry FM1 FM2 FM2+ FM2+[a], AM4 AM4 —
Basic — — AM1 — FP5 —
Other FS1 FS1+, FP2 FP3 FP4 FP5 FP6 FP7 FL1 FP7
FP7r2
FP8 		? FT1 FT3 FT3b FP4 FP5 FT5 FP5 FT6
PCI Express version 2.0 3.0 4.0 5.0 4.0 2.0 3.0
CXL — —
Fab. (nm) GF 32SHP
(HKMG SOI) 		GF 28SHP
(HKMG bulk) 		GF 14LPP
(FinFET bulk) 		GF 12LP
(FinFET bulk) 		TSMC N7
(FinFET bulk) 		TSMC N6
(FinFET bulk) 		CCD: TSMC N5
(FinFET bulk)
cIOD: TSMC N6
(FinFET bulk) 		TSMC 4nm
(FinFET bulk) 		TSMC N40
(bulk) 		TSMC N28
(HKMG bulk) 		GF 28SHP
(HKMG bulk) 		GF 14LPP
(FinFET bulk) 		GF 12LP
(FinFET bulk) 		TSMC N6
(FinFET bulk)
Die area (mm2) 228 246 245 245 250 210[7] 156 180 210 CCD: (2x) 70
cIOD: 122 		178 75 (+ 28 FCH) 107 ? 125 149 ~100
Min TDP (W) 35 17 12 10 15 65 35 4.5 4 3.95 10 6 12 8
Max APU TDP (W) 100 95 65 45 170 54 18 25 6 54 15
Max stock APU base clock (GHz) 3 3.8 4.1 4.1 3.7 3.8 3.6 3.7 3.8 4.0 3.3 4.7 4.3 1.75 2.2 2 2.2 3.2 2.6 1.2 3.35 2.8
Max APUs per node[b] 1 1
Max core dies per CPU 1 2 1 1
Max CCX per core die 1 2 1 1
Max cores per CCX 4 8 2 4 2 4
Max CPU[c] cores per APU 4 8 16 8 2 4 2 4
Max threads per CPU core 1 2 1 2
Integer pipeline structure 3+3 2+2 4+2 4+2+1 1+3+3+1+2 1+1+1+1 2+2 4+2 4+2+1
i386, i486, i586, CMOV, NOPL, i686, PAE, NX bit, CMPXCHG16B, AMD-V, RVI, ABM, and 64-bit LAHF/SAHF    
IOMMU[d] — v2 v1 v2
BMI1, AES-NI, CLMUL, and F16C   —  
MOVBE —  
AVIC, BMI2, RDRAND, and MWAITX/MONITORX —  
SME[e], TSME[e], ADX, SHA, RDSEED, SMAP, SMEP, XSAVEC, XSAVES, XRSTORS, CLFLUSHOPT, CLZERO, and PTE Coalescing —   —  
GMET, WBNOINVD, CLWB, QOS, PQE-BW, RDPID, RDPRU, and MCOMMIT —   —  
MPK, VAES —   —
SGX — —
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 256-bit
CPU instruction set SIMD level SSE4a[f] AVX AVX2 AVX-512 SSSE3 AVX AVX2
3DNow! 3DNow!+ — —
PREFETCH/PREFETCHW    
GFNI —   —
AMX —
FMA4, LWP, TBM, and XOP —   — —   —
FMA3    
AMD XDNA —   —
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) 256 128 192 256 512 256 64 128 96 128
L1 instruction cache associativity (ways) 2 3 4 8 2 3 4 8
L2 caches per core 1 0.5 1 1 0.5 1
Max APU total L2 cache (MiB) 4 2 4 16 1 2 1 2
L2 cache associativity (ways) 16 8 16 8
Max on--die L3 cache per CCX (MiB) — 4 16 32 — 4
Max 3D V-Cache per CCD (MiB) — 64 — —
Max total in-CCD L3 cache per APU (MiB) 4 8 16 64 4
Max. total 3D V-Cache per APU (MiB) — 64 — —
Max. board L3 cache per APU (MiB) — —
Max total L3 cache per APU (MiB) 4 8 16 128 4
APU L3 cache associativity (ways) 16 16
L3 cache scheme Victim Victim
Max. L4 cache — —
Max stock DRAM support DDR3-1866 DDR3-2133 DDR3-2133, DDR4-2400 DDR4-2400 DDR4-2933 DDR4-3200, LPDDR4-4266 DDR5-4800, LPDDR5-6400 DDR5-5200 DDR5-5600, LPDDR5x-7500 DDR3L-1333 DDR3L-1600 DDR3L-1866 DDR3-1866, DDR4-2400 DDR4-2400 DDR4-1600 DDR4-3200 LPDDR5-5500
Max DRAM channels per APU 2 1 2 1 2
Max stock DRAM bandwidth (GB/s) per APU 29.866 34.132 38.400 46.932 68.256 102.400 83.200 120.000 10.666 12.800 14.933 19.200 38.400 12.800 51.200 88.000
GPU microarchitecture TeraScale 2 (VLIW5) TeraScale 3 (VLIW4) GCN 2nd gen GCN 3rd gen GCN 5th gen[8] RDNA 2 RDNA 3 TeraScale 2 (VLIW5) GCN 2nd gen GCN 3rd gen[8] GCN 5th gen RDNA 2
GPU instruction set TeraScale instruction set GCN instruction set RDNA instruction set TeraScale instruction set GCN instruction set RDNA instruction set
Max stock GPU base clock (MHz) 600 800 844 866 1108 1250 1400 2100 2400 400 538 600 ? 847 900 1200 600 1300 1900
Max stock GPU base GFLOPS[g] 480 614.4 648.1 886.7 1134.5 1760 1971.2 2150.4 3686.4 102.4 86 ? ? ? 345.6 460.8 230.4 1331.2 486.4
3D engine[h] Up to 400:20:8 Up to 384:24:6 Up to 512:32:8 Up to 704:44:16[9] Up to 512:32:8 768:48:8 128:8:4 80:8:4 128:8:4 Up to 192:12:8 Up to 192:12:4 192:12:4 Up to 512:?:? 128:?:?
IOMMUv1 IOMMUv2 IOMMUv1 ? IOMMUv2
Video decoder UVD 3.0 UVD 4.2 UVD 6.0 VCN 1.0[10] VCN 2.1[11] VCN 2.2[11] VCN 3.1 ? UVD 3.0 UVD 4.0 UVD 4.2 UVD 6.2 VCN 1.0 VCN 3.1
Video encoder — VCE 1.0 VCE 2.0 VCE 3.1 — VCE 2.0 VCE 3.4
AMD Fluid Motion            
GPU power saving PowerPlay PowerTune PowerPlay PowerTune[12]
TrueAudio —  [13] ? —  
FreeSync 1
2 		1
2
HDCP[i] ? 1.4 2.2 2.3 ? 1.4 2.2 2.3
PlayReady[i] — 3.0 not yet — 3.0 not yet
Supported displays[j] 2–3 2–4 3 3 (desktop)
4 (mobile, embedded)		 4 2 3 4 4
/drm/radeon[k][15][16]   —   —
/drm/amdgpu[k][17] —  [18] —  [18]
  1. ^ For FM2+ Excavator models: A8-7680, A6-7480 & 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. ^ a b 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. ^ a b 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.[14] Alternatively active DisplayPort-to-DVI/HDMI/VGA adapters can be employed.
  11. ^ a b DRM (Direct Rendering Manager) is a component of the Linux kernel. Support in this table refers to the most current version.
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  1. ^ van Miltenburg, Olaf (2012-09-27). "AMD introduceert Trinity-apu's voor de desktop". Tweakers.
  2. ^ Hugosson, Jacob (2011-10-03). "AMD Piledriver 10% faster than Bulldozer". NordicHardware. Archived from the original on 2012-10-22. Retrieved 2011-10-04.
  3. ^ Chris Angelini (September 26, 2012), "Socket Compatibility And The A85X FCH", Tom's Hardware: 6, retrieved 2012-12-10
  4. ^ "Report: Upcoming Socket FM2+ Will Support Older Trinity and Richland APUs". 6 June 2013.
  5. ^ "AMD Announces the 7th Generation APU: Excavator mk2 in Bristol Ridge and Stoney Ridge for Notebooks". 31 May 2016. Retrieved 3 January 2020.
  6. ^ "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.
  7. ^ "The Mobile CPU Comparison Guide Rev. 13.0 Page 5 : AMD Mobile CPU Full List". TechARP.com. Retrieved 13 December 2017.
  8. ^ a b "AMD VEGA10 and VEGA11 GPUs spotted in OpenCL driver". VideoCardz.com. Retrieved 6 June 2017.
  9. ^ 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.
  10. ^ Larabel, Michael (17 November 2017). "Radeon VCN Encode Support Lands in Mesa 17.4 Git". Phoronix. Retrieved 20 November 2017.
  11. ^ a b "AMD Ryzen 5000G 'Cezanne' APU Gets First High-Res Die Shots, 10.7 Billion Transistors In A 180mm2 Package". wccftech. Aug 12, 2021. Retrieved August 25, 2021.
  12. ^ Tony Chen; Jason Greaves, "AMD's Graphics Core Next (GCN) Architecture" (PDF), AMD, retrieved 13 August 2016
  13. ^ "A technical look at AMD's Kaveri architecture". Semi Accurate. Retrieved 6 July 2014.
  14. ^ "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.
  15. ^ Airlie, David (26 November 2009). "DisplayPort supported by KMS driver mainlined into Linux kernel 2.6.33". Retrieved 16 January 2016.
  16. ^ "Radeon feature matrix". freedesktop.org. Retrieved 10 January 2016.
  17. ^ Deucher, Alexander (16 September 2015). "XDC2015: AMDGPU" (PDF). Retrieved 16 January 2016.
  18. ^ a b Michel Dänzer (17 November 2016). "[ANNOUNCE] xf86-video-amdgpu 1.2.0". lists.x.org.
 

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