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Square green ceramic CPU package with gold contacts and silver metal heatspreader, branded AMD EPYC 7742

AMD

AMD EPYC 7742 64-core 2.25 GHz SP3 225W server processor

SKU CH-3HJJ-4NZRY

64-core server processor with 128 threads, 2.25 GHz base and 3.4 GHz boost, SP3 socket and 225 W TDP

  • Product nameEPYC 7742
  • CPU cores64-Core
  • CPU socketSocket SP3
  • Maximum turbo clock3.4 GHz
  • CPU threads128
  • Working frequency2.25 GHz
  • 64 cores and 128 threads handle massive parallel workloads
  • Base clock 2.25 GHz with max boost up to 3.4 GHz
  • 8-channel DDR4 support feeds memory-intensive applications
  • 128 lanes of PCIe 4.0 provide high-speed I/O bandwidth
  • 64 MB L3 cache reduces latency for large data sets

AMD EPYC 7742 64-Core Server Processor

This AMD EPYC 7742 is a 64-core server processor built for the SP3 socket. It operates at a 2.25 GHz base frequency and reaches a 3.4 GHz maximum boost. The chip provides 128 threads and 64 MB of L3 cache within a 225 W TDP envelope. It belongs to the EPYC 7002 series.

Suited for dense compute and memory-heavy workloads

This processor suits deployments needing high core counts and eight-channel DDR4 bandwidth. It also delivers 128 lanes of PCIe 4.0 for extensive I/O. It is not for single-threaded tasks that favour higher per-core clocks. It is also not for platforms that lack SP3 infrastructure or dual-socket support.

The 64-core count and 225 W TDP decide fit

The defining specification is the 64-core configuration paired with a 225 W default TDP. This combination determines whether your cooling and power budget can accommodate the part. Verify that your SP3 platform supports this thermal design before purchase.

How it compares

Measured against everything we stock in Server Processors, at today’s prices. Recalculated every night.

Price $1,598.99
Typical for this category: the median of 621 items is $1,561.99.
CPU cores 64-Core
Higher than about 83% of the 386 comparable items (median 24).
Maximum turbo clock 3.4 GHz
Lower than about 80% of the 327 comparable items (median 3.9 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAMD
Product lineAMD EPYC 7002
Product nameEPYC 7742
Performance
Working frequency2.25 GHz
Processor
CPU cores64-Core
CPU socketSocket SP3
Maximum turbo clock3.4 GHz
CPU threads128

Questions about this item

What motherboard socket and power budget do I need for the EPYC 7742 64-core 2.25 GHz SP3 225W processor?

The CPU fits Socket SP3 and has a default TDP of 120 W, though the supplier lists a 225 W rating for this unit.

Can I run my existing DDR4 memory with the 7742's 8-channel controller?

Yes, the processor supports 8 channels of DDR4, so compatible DDR4 DIMMs will work at supported speeds.

How do I verify all 64 cores and 128 threads are active after installation?

Check the OS task manager or run lscpu; it should report 64 cores and 128 threads at the 2.25 GHz base frequency.

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