EPYC 7742 vs Phenom II X4 920

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Aggregate performance score

Phenom II X4 920
2009
4 cores / 4 threads, 125 Watt
1.36
EPYC 7742
2019
64 cores / 128 threads, 225 Watt
44.07
+3140%

EPYC 7742 outperforms Phenom II X4 920 by a whopping 3140% based on our aggregate benchmark results.

Primary details

Comparing Phenom II X4 920 and EPYC 7742 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking224945
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation4.493.55
Market segmentDesktop processorServer
Seriesno dataAMD EPYC
Power efficiency1.0318.52
Architecture codenameDeneb (2009−2011)Zen 2 (2017−2020)
Release date8 January 2009 (15 years ago)7 August 2019 (5 years ago)
Launch price (MSRP)$90$6,950

Cost-effectiveness evaluation

Performance per price, higher is better.

Phenom II X4 920 has 26% better value for money than EPYC 7742.

Detailed specifications

Phenom II X4 920 and EPYC 7742 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 cores4 (Quad-Core)64 (Tetrahexaconta-Core)
Threads4128
Base clock speed2.8 GHz2.25 GHz
Boost clock speed2.8 GHz3.4 GHz
Multiplierno data22.5
L1 cache128 KB (per core)96K (per core)
L2 cache512 KB (per core)512K (per core)
L3 cache6 MB (shared)256 MB (shared)
Chip lithography45 nm7 nm, 14 nm
Die size258 mm2192 mm2
Number of transistors758 million4,800 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+

Compatibility

Information on Phenom II X4 920 and EPYC 7742 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 configuration12 (Multiprocessor)
SocketAM3TR4
Power consumption (TDP)125 Watt225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X4 920 and EPYC 7742. 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 Phenom II X4 920 and EPYC 7742 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X4 920 and EPYC 7742. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4 Eight-channel
Maximum memory sizeno data4 TiB
Max memory channelsno data8
Maximum memory bandwidthno data204.763 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)no data

Peripherals

Specifications and connection of peripherals supported by Phenom II X4 920 and EPYC 7742.

PCIe version2.0no 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.

Phenom II X4 920 1.36
EPYC 7742 44.07
+3140%

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.

Phenom II X4 920 2156
EPYC 7742 70007
+3147%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Phenom II X4 920 350
EPYC 7742 1263
+261%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Phenom II X4 920 1097
EPYC 7742 12501
+1040%

Gaming performance

Pros & cons summary


Performance score 1.36 44.07
Recency 8 January 2009 7 August 2019
Physical cores 4 64
Threads 4 128
Chip lithography 45 nm 7 nm
Power consumption (TDP) 125 Watt 225 Watt

Phenom II X4 920 has 80% lower power consumption.

EPYC 7742, on the other hand, has a 3140.4% higher aggregate performance score, an age advantage of 10 years, 1500% more physical cores and 3100% more threads, and a 542.9% more advanced lithography process.

The EPYC 7742 is our recommended choice as it beats the Phenom II X4 920 in performance tests.

Note that Phenom II X4 920 is a desktop processor while EPYC 7742 is a server/workstation one.


Should you still have questions on choice between Phenom II X4 920 and EPYC 7742, ask them in Comments section, and we shall answer.

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AMD Phenom II X4 920
Phenom II X4 920
AMD EPYC 7742
EPYC 7742

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Community ratings

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


4.2 44 votes

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4.3 129 votes

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Questions & comments

Here you can ask a question about Phenom II X4 920 or EPYC 7742, agree or disagree with our judgements, or report an error or mismatch.