EPYC 7643 vs Xeon E5620

#ad 
Buy on Amazon
VS

Aggregate performance score

Xeon E5620
2010
4 cores / 8 threads, 80 Watt
2.26
EPYC 7643
2021
48 cores / 96 threads, 225 Watt
47.88
+2019%

EPYC 7643 outperforms Xeon E5620 by a whopping 2019% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5620 and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking182738
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.086.71
Market segmentServerServer
Seriesno dataAMD EPYC
Power efficiency2.6720.14
Architecture codenameWestmere-EP (2010−2011)Milan (2021−2023)
Release date16 March 2010 (14 years ago)15 March 2021 (3 years ago)
Launch price (MSRP)$35$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7643 has 8288% better value for money than Xeon E5620.

Detailed specifications

Xeon E5620 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)
Threads896
Base clock speed2.4 GHz2.3 GHz
Boost clock speed2.66 GHz3.6 GHz
Multiplierno data23
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)512 KB (per core)
L3 cache12 MB (shared)256 MB (shared)
Chip lithography32 nm7 nm+
Die size239 mm28x 81 mm2
Maximum core temperature78 °Cno data
Number of transistors1,170 million33,200 million
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Xeon E5620 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 configuration22
SocketFCLGA1366,LGA1366SP3
Power consumption (TDP)80 Watt225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5620 and EPYC 7643. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2no data
AES-NI++
AVX-+
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology1.0no data
Hyper-Threading Technology+no data
Idle States+no data
Demand Based Switching+no data
PAE40 Bitno data

Security technologies

Xeon E5620 and EPYC 7643 technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5620 and EPYC 7643 are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5620 and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-3200
Maximum memory size288 GB4 TiB
Max memory channels3no data
Maximum memory bandwidth25.6 GB/s204.795 GB/s
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataN/A

Peripherals

Specifications and connection of peripherals supported by Xeon E5620 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.

Xeon E5620 2.26
EPYC 7643 47.88
+2019%

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.

Xeon E5620 3592
EPYC 7643 76050
+2017%

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.

Xeon E5620 367
EPYC 7643 1292
+252%

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.

Xeon E5620 1468
EPYC 7643 12182
+730%

Gaming performance

Pros & cons summary


Performance score 2.26 47.88
Recency 16 March 2010 15 March 2021
Physical cores 4 48
Threads 8 96
Chip lithography 32 nm 7 nm
Power consumption (TDP) 80 Watt 225 Watt

Xeon E5620 has 181.3% lower power consumption.

EPYC 7643, on the other hand, has a 2018.6% higher aggregate performance score, an age advantage of 10 years, 1100% more physical cores and 1100% more threads, and a 357.1% more advanced lithography process.

The EPYC 7643 is our recommended choice as it beats the Xeon E5620 in performance tests.


Should you still have questions on choice between Xeon E5620 and EPYC 7643, 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.


Intel Xeon E5620
Xeon E5620
AMD EPYC 7643
EPYC 7643

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.


3.2 128 votes

Rate Xeon E5620 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
1.2 232 votes

Rate EPYC 7643 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Xeon E5620 or EPYC 7643, agree or disagree with our judgements, or report an error or mismatch.