EPYC 7642 vs EPYC 7261

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Aggregate performance score

EPYC 7261
2018
8 cores / 16 threads, 170 Watt
7.02
EPYC 7642
2019
48 cores / 96 threads, 225 Watt
37.01
+427%

EPYC 7642 outperforms EPYC 7261 by a whopping 427% based on our aggregate benchmark results.

Primary details

Comparing EPYC 7261 and EPYC 7642 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking100891
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data5.55
Market segmentServerServer
SeriesAMD EPYCAMD EPYC
Power efficiency3.9115.56
Architecture codenameNaples (2017−2018)Zen 2 (2017−2020)
Release date14 June 2018 (6 years ago)7 August 2019 (5 years ago)
Launch price (MSRP)no data$4,775

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7261 and EPYC 7642 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores8 (Octa-Core)48 (Octatetraconta-Core)
Threads1696
Base clock speed2.5 GHz2.4 GHz
Boost clock speed2.9 GHz3.4 GHz
Multiplier2523
L1 cache96K (per core)96K (per core)
L2 cache512K (per core)512K (per core)
L3 cache32 MB (shared)256 MB (shared)
Chip lithography14 nm7 nm, 14 nm
Die size213 mm2192 mm2
Maximum case temperature (TCase)81 °Cno data
Number of transistors4,800 million4,800 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on EPYC 7261 and EPYC 7642 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration2 (Multiprocessor)2 (Multiprocessor)
SocketSP3TR4
Power consumption (TDP)170 Watt225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7261 and EPYC 7642. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7261 and EPYC 7642 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7261 and EPYC 7642. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR4 Eight-channel
Maximum memory size2 TiB4 TiB
Max memory channels88
Maximum memory bandwidth170.671 GB/s204.763 GB/s
ECC memory support++

Peripherals

Specifications and connection of peripherals supported by EPYC 7261 and EPYC 7642.

PCIe version3.0no data
PCI Express lanes128no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

EPYC 7261 7.02
EPYC 7642 37.01
+427%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

EPYC 7261 11149
EPYC 7642 58795
+427%

Gaming performance

Pros & cons summary


Performance score 7.02 37.01
Recency 14 June 2018 7 August 2019
Physical cores 8 48
Threads 16 96
Chip lithography 14 nm 7 nm
Power consumption (TDP) 170 Watt 225 Watt

EPYC 7261 has 32.4% lower power consumption.

EPYC 7642, on the other hand, has a 427.2% higher aggregate performance score, an age advantage of 1 year, 500% more physical cores and 500% more threads, and a 100% more advanced lithography process.

The EPYC 7642 is our recommended choice as it beats the EPYC 7261 in performance tests.


Should you still have questions on choice between EPYC 7261 and EPYC 7642, ask them in Comments section, and we shall answer.

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AMD EPYC 7261
EPYC 7261
AMD EPYC 7642
EPYC 7642

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Community ratings

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4.6 11 votes

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Questions & comments

Here you can ask a question about EPYC 7261 or EPYC 7642, agree or disagree with our judgements, or report an error or mismatch.