EPYC 9634 vs EPYC 7742

#ad 
Buy on Amazon
VS

Aggregate performance score

EPYC 7742
2019
64 cores / 128 threads, 225 Watt
45.52
EPYC 9634
2022
84 cores / 168 threads, 290 Watt
70.53
+54.9%

EPYC 9634 outperforms EPYC 7742 by an impressive 55% based on our aggregate benchmark results.

Primary details

Comparing EPYC 7742 and EPYC 9634 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking459
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation3.472.07
Market segmentServerServer
SeriesAMD EPYCAMD EPYC
Power efficiency18.4522.18
Architecture codenameZen 2 (2017−2020)Genoa (2022−2023)
Release date7 August 2019 (5 years ago)10 November 2022 (1 year ago)
Launch price (MSRP)$6,950$10,304

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7742 has 68% better value for money than EPYC 9634.

Detailed specifications

EPYC 7742 and EPYC 9634 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 cores64 (Tetrahexaconta-Core)84
Threads128168
Base clock speed2.25 GHz2.25 GHz
Boost clock speed3.4 GHz2.25 GHz
Multiplier22.522.5
L1 cache96K (per core)5376 KB
L2 cache512K (per core)84 MB
L3 cache256 MB (shared)384 MB (shared)
Chip lithography7 nm, 14 nm5 nm, 6 nm
Die size192 mm212x 72 mm2
Number of transistors4,800 million78,840 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on EPYC 7742 and EPYC 9634 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
SocketTR4SP5
Power consumption (TDP)225 Watt290 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7742 and EPYC 9634. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7742 and EPYC 9634 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and EPYC 9634. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Eight-channelDDR5-4800
Maximum memory size4 TiB6 TiB
Max memory channels8no data
Maximum memory bandwidth204.763 GB/s460.8 GB/s
ECC memory support+-

Peripherals

Specifications and connection of peripherals supported by EPYC 7742 and EPYC 9634.

PCIe versionno data5.0
PCI Express lanesno data128

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 7742 45.52
EPYC 9634 70.53
+54.9%

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 7742 69663
EPYC 9634 107944
+55%

Gaming performance

Pros & cons summary


Performance score 45.52 70.53
Recency 7 August 2019 10 November 2022
Physical cores 64 84
Threads 128 168
Chip lithography 7 nm 5 nm
Power consumption (TDP) 225 Watt 290 Watt

EPYC 7742 has 28.9% lower power consumption.

EPYC 9634, on the other hand, has a 54.9% higher aggregate performance score, an age advantage of 3 years, 31.3% more physical cores and 31.3% more threads, and a 40% more advanced lithography process.

The EPYC 9634 is our recommended choice as it beats the EPYC 7742 in performance tests.


Should you still have questions on choice between EPYC 7742 and EPYC 9634, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD EPYC 7742
EPYC 7742
AMD EPYC 9634
EPYC 9634

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.3 128 votes

Rate EPYC 7742 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
5 6 votes

Rate EPYC 9634 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about EPYC 7742 or EPYC 9634, agree or disagree with our judgements, or report an error or mismatch.