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Socket TR4

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Socket TR4
Chip form factorsFlip-chip
FSB protocolPCI Express, Infinity Fabric
Processor dimensions58.5mm x 75.4mm
4410.9 mm2
ProcessorsRyzen Threadripper:
Memory supportDDR4

This article is part of the CPU socket series

Socket TR4, also known as Socket SP3r2, is a zero insertion force land grid array (LGA) CPU socket designed by AMD supporting its first- and second-generation Zen-based Ryzen Threadripper desktop processors,[1][2] launched on August 10, 2017[3] for the high-end desktop and workstation platforms. It was succeeded by Socket sTRX4 for the third generation of Ryzen Threadripper processors.

TR4 is AMD's second LGA socket for a consumer product after the short lived Socket 1207 FX.[4][5] It is physically identical to, but electrically incompatible with both AMD's server Socket SP3, and TR4's successor, Socket sTRX4.[3][6]

While the SP3 server socket does not require a chipset, instead utilizing a system-on-a-chip design, TR4 and its successor HEDT sockets require a chipset to provide improved functionality. For TR4, the AMD X399 chipset was developed, which supports a total of 64 PCIe 3.0 lanes for quad SLI/CrossFire configurations.[7]

The socket is made by both Foxconn and Lotes.[8]

See also[edit]


  1. ^ Ung, Gordon (May 30, 2017). "AMD's 'TR4' Threadripper CPU socket is gigantic". PCWorld. Retrieved November 16, 2022.
  2. ^ "CoolerMaster Wraith Ripper CPU cooler for Threadripper". Cooler Master. Retrieved November 16, 2022.
  3. ^ a b Cutress, Ian (August 10, 2017). "The AMD Ryzen Threadripper 1950X and 1920X Review: CPUs on Steroids". AnandTech. Retrieved August 10, 2017.
  4. ^ Shimpi, Anand Lal (November 30, 2006). "AMD's Quad FX: Technically Quad Core". AnandTech. Retrieved August 13, 2018.
  5. ^ Hruska, Joel (August 1, 2017). "MSI Shows How to Install AMD's Threadripper CPU". ExtremeTech. Retrieved August 10, 2017.
  6. ^ Cutress, Ian (November 7, 2019). "3rd Gen Ryzen Threadripper, Up to 32-Cores - AMD Q4: 16-core Ryzen 9 3950X, Threadripper Up To 32-Core 3970X, Coming November 25th". AnandTech. Retrieved November 28, 2019.
  7. ^ "AMD SocketTR4 X399 Platform-based Motherboards". AMD. Retrieved December 6, 2018.
  8. ^ Terkelsen, Jacob (November 22, 2017). "MSI X399 Gaming Pro Carbon AC Motherboard Review". Tom's Hardware. Retrieved December 10, 2019.