EPYC 7643 vs Phenom II X4 925

VS

Aggregate performance score

Phenom II X4 925
2009
4 cores / 4 threads, 95 Watt
1.43
EPYC 7643
2021
48 cores / 96 threads, 225 Watt
47.88
+3248%

EPYC 7643 outperforms Phenom II X4 925 by a whopping 3248% based on our aggregate benchmark results.

Primary details

Comparing Phenom II X4 925 and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking218739
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.146.37
Market segmentDesktop processorServer
Seriesno dataAMD EPYC
Power efficiency1.4220.14
Architecture codenameDeneb (2009−2011)Milan (2021−2023)
Release date11 May 2009 (15 years ago)15 March 2021 (3 years ago)
Launch price (MSRP)$160$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7643 has 4450% better value for money than Phenom II X4 925.

Detailed specifications

Phenom II X4 925 and EPYC 7643 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)48 (Octatetraconta-Core)
Threads496
Base clock speed2.8 GHz2.3 GHz
Boost clock speed2.8 GHz3.6 GHz
Multiplierno data23
L1 cache128 KB (per core)64 KB (per core)
L2 cache512 KB (per core)512 KB (per core)
L3 cache6 MB (shared)256 MB (shared)
Chip lithography45 nm7 nm+
Die size258 mm28x 81 mm2
Number of transistors758 million33,200 million
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Phenom II X4 925 and EPYC 7643 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
SocketAM3SP3
Power consumption (TDP)95 Watt225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X4 925 and EPYC 7643. You'll probably need this information if you require some particular technology.

AES-NI-+
AVX-+

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X4 925 and EPYC 7643 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X4 925 and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-3200
Maximum memory sizeno data4 TiB
Maximum memory bandwidthno data204.795 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)N/A

Peripherals

Specifications and connection of peripherals supported by Phenom II X4 925 and EPYC 7643.

PCIe version2.04.0
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.

Phenom II X4 925 1.43
EPYC 7643 47.88
+3248%

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 925 2272
EPYC 7643 76050
+3247%

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 925 322
EPYC 7643 1237
+284%

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 925 963
EPYC 7643 11421
+1086%

Gaming performance

Pros & cons summary


Performance score 1.43 47.88
Recency 11 May 2009 15 March 2021
Physical cores 4 48
Threads 4 96
Chip lithography 45 nm 7 nm
Power consumption (TDP) 95 Watt 225 Watt

Phenom II X4 925 has 136.8% lower power consumption.

EPYC 7643, on the other hand, has a 3248.3% higher aggregate performance score, an age advantage of 11 years, 1100% more physical cores and 2300% more threads, and a 542.9% more advanced lithography process.

The EPYC 7643 is our recommended choice as it beats the Phenom II X4 925 in performance tests.

Note that Phenom II X4 925 is a desktop processor while EPYC 7643 is a server/workstation one.


Should you still have questions on choice between Phenom II X4 925 and EPYC 7643, ask them in Comments section, and we shall answer.

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AMD Phenom II X4 925
Phenom II X4 925
AMD EPYC 7643
EPYC 7643

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Community ratings

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Questions & comments

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