EPYC 7H12 vs Xeon E5649

Primary details

Comparing Xeon E5649 and EPYC 7H12 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1474	41
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.56	no data
Market segment	Server	Server
Series	no data	AMD EPYC
Architecture codename	Westmere-EP (2010−2011)	Zen 2 (2017−2020)
Release date	14 February 2011 (13 years ago)	18 September 2019 (4 years ago)
Launch price (MSRP)	$45	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5649 and EPYC 7H12 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 cores	6 (Hexa-Core)	64 (Tetrahexaconta-Core)
Threads	12	128
Base clock speed	2.53 GHz	2.6 GHz
Boost clock speed	2.93 GHz	3.3 GHz
Multiplier	no data	26
L1 cache	64 KB (per core)	4 MB
L2 cache	256 KB (per core)	32 MB
L3 cache	12288 KB (shared)	256 MB (shared)
Chip lithography	32 nm	7 nm, 14 nm
Die size	239 mm2	192 mm2
Maximum core temperature	76 °C	no data
Number of transistors	1,170 million	4,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Xeon E5649 and EPYC 7H12 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 configuration	2	2 (Multiprocessor)
Socket	FCLGA1366	TR4
Power consumption (TDP)	80 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5649 and EPYC 7H12. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Demand Based Switching	+	no data
PAE	40 Bit	no data
Status	Discontinued	no data
Precision Boost 2	no data	+

Security technologies

Xeon E5649 and EPYC 7H12 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 E5649 and EPYC 7H12 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 E5649 and EPYC 7H12. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4 Eight-channel
Maximum memory size	288 GB	4 TiB
Max memory channels	3	8
Maximum memory bandwidth	32 GB/s	204.763 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5649 and EPYC 7H12.

PCIe version

2.0

no 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.

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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.

Pros & cons summary

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Performance score	3.68	45.02
Recency	14 February 2011	18 September 2019
Physical cores	6	64
Threads	12	128
Chip lithography	32 nm	7 nm
Power consumption (TDP)	80 Watt	280 Watt

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Should you still have questions on choice between Xeon E5649 and EPYC 7H12, ask them in Comments section, and we shall answer.

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