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Epyc

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AMD Epyc
General information
LaunchedJune 2017
Discontinuedpresent
Marketed byAMD
Designed byAMD
Common manufacturer
Performance
Max. CPU clock rate2.7 GHz to 3.2 GHz
Architecture and classification
Technology node14 nm
MicroarchitectureZen (microarchitecture)
Instruction setAMD64/x86-64, MMX(+), SSE1, SSE2, SSE3, SSSE3, SSE4a, SSE4.1, SSE4.2, AES, CLMUL, AVX, AVX2, FMA3, CVT16/F16C, ABM, BMI1, BMI2, SHA
Physical specifications
Cores
  • up to 32 cores/64 threads (64 cores/128 threads on dual socket systems)
Socket
Products, models, variants
Core name
  • Naples
Brand name
  • EPYC
History
PredecessorOpteron

Epyc is AMD's x86 server processor line based on the company's Zen microarchitecture. It was introduced in 2017.[1]

History

In March 2017 AMD announced a server platform based on the Zen microarchitecture, codenamed Naples, and officially revealed it under the brand name Epyc in May.[2] That June, AMD officially launched Epyc by releasing the Epyc 7000 series processors.[3]

Design

The platform includes one- and two-socket systems. In multi-processor configurations, two Epyc CPUs communicate via AMD's Infinity Fabric.[4] Each chip supports 8 channels of memory and 128 PCIe 3.0 lanes, of which 64 lanes from each are used for CPU-to-CPU communication through Infinity Fabric when installed in a dual-processor configuration.[5] All Epyc processors are composed of four eight-core Zeppelin dies (the same die as found in Ryzen processors) in a multi-chip module, with the varying product core counts produced by symmetrically disabling cores of each core complex on each Zeppelin die.[6][7]

Reception

Initial reception to Epyc was generally positive.[8] Epyc was generally found to outperform Intel CPUs in cases where the cores could work independently, such as in high performance computing and big data applications. Epyc fell behind in database tasks compared to Intel's competitive Xeon parts due to higher cache latency.[8]

Products

Common features of EPYC 7001 series CPUs:

  • Socket: SP3.
  • All the CPUs support ECC DDR4-2666 in octa-channel mode (7251 supports only DDR4-2400).
  • L1 cache: 96 KB (32 KB data + 64 KB instruction) per core.
  • L2 cache: 512 KB per core.
  • All the CPUs support 128 PCIe 3.0 lanes.
  • Fabrication process: GlobalFoundries 14LP.
Model[i] Cores
(threads) 		Clock rate (GHz) L3 cache
(total) 		TDP Chiplets Core
config[ii] 		Release Embedded
options[iii]
Base Boost Date Price
(USD)
All–core Max
7251[9][10] 8 (16) 2.1 2.9 2.9 32 MB 120 W 4 × CCD 8 × 1 Jun 2017[11] $475 Yes
7261[9][12] 2.5 64 MB 155/170 W Jun 2018[13] $570 Yes
7281[9][10] 16 (32) 2.1 2.7 2.7 32 MB 8 × 2 Jun 2017[11] $650 Yes
7301[9][10] 2.2 64 MB $800 Yes
7351P[9][10] 2.4 2.9 2.9 $750 735P
7351[9][10] $1,100 Yes
7371[9][14] 3.1 3.6 3.8 200 W Nov 2018[15] $1,550 Yes
7401P[9][10] 24 (48) 2.0 2.8 3.0 155/170 W 8 × 3 Jun 2017[11] $1,075 740P
7401[9][10] $1,850 Yes
7451[9][10] 2.3 2.9 3.2 180 W $2,400 Yes
7501[9][10] 32 (64) 2.0 2.6 3.0 155/170 W 8 × 4 $3,400 Yes
7551P[9][10] 2.55 180 W $2,100 755P
7551[9][10] $3,400 Yes
7571[16][17] 2.2 3.0 200 W Nov 2018 OEM/AWS Un­known
7601[9][10] 2.7 3.2 180 W Jun 2017[11] $4,200 Yes
  1. ^ Models with "P" suffixes are uniprocessors, only available as single socket configuration.
  2. ^ Core Complexes (CCX) × cores per CCX
  3. ^ Epyc embedded 7001 series models have identical specifications as Epyc 7001 series.

References

  1. ^ "Computex 2017: AMD Press Event Live Blog (starts 10pm ET)".
  2. ^ Kampman, Jeff (16 May 2017). "AMD's Naples datacenter CPUs will make an Epyc splash". Tech Report. Retrieved 16 May 2017.
  3. ^ Cutress, Ian (20 June 2017). "AMD's Future in Servers: New 7000-Series CPUs Launched and EPYC Analysis". Anandtech. Retrieved 12 July 2017.
  4. ^ Kampman, Jeff (7 March 2017). "AMD's Naples platform prepares to take Zen into the datacenter". Tech Report. Retrieved 7 March 2017.
  5. ^ Cutress, Ian (7 March 2017). "AMD Prepares 32-Core Naples CPUs for 1P and 2P Servers: Coming in Q2". Anandtech. Retrieved 7 March 2017.
  6. ^ https://www.pcper.com/reviews/Processors/AMD-EPYC-7000-Series-Data-Center-Processor-Launch-Gunning-Xeon/Architectural-Outl
  7. ^ https://www.nextplatform.com/2017/05/17/amd-disrupts-two-socket-server-status-quo/
  8. ^ a b De Gelas, Johan; Cutress, Ian (11 July 2017). "Sizing Up the Servers: Intel's Skylake-SP Xeon vs AMD's EPYC 7000". Anandtech. Retrieved 11 July 2017.
  9. ^ a b c d e f g h i j k l m n "AMD EPYC 7000 Series Processors" (PDF). AMD. January 2019. Retrieved March 25, 2023.
  10. ^ a b c d e f g h i j k l Cutress, Ian (June 20, 2017). "AMD's Future in Servers: New 7000-Series CPUs Launched and EPYC Analysis". AnandTech. Retrieved June 21, 2017.
  11. ^ a b c d Kennedy, Patrick (May 16, 2017). "AMD EPYC New Details on the Emerging Server Platform". ServeTheHome. Retrieved May 16, 2017.
  12. ^ "AMD EPYC 7261 - PS7261BEV8RAF". CPU-World. March 26, 2023.
  13. ^ Kennedy, Patrick (October 31, 2018). "AMD EPYC 7261 8 Core CPU Quietly Launched L3 Cache Monster". ServeTheHome. Retrieved March 28, 2023.
  14. ^ "AMD EPYC 7371 - PS7371BDVGPAF". CPU-World. March 26, 2023.
  15. ^ "New AMD-Powered Supercomputers Unleash Discovery and Accelerate Innovation" (Press release). AMD. November 13, 2018. Retrieved March 28, 2023.
  16. ^ "AMD EPYC 7571 - PS7571BDVIHAF". CPU-World. March 25, 2023.
  17. ^ Larabel, Michael (November 7, 2018). "A Look At The AMD EPYC Performance On The Amazon EC2 Cloud". Phoronix. Retrieved March 28, 2023.
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