Xeon E5-1603 v4 vs E5649

Primary details

Comparing Xeon E5649 and Xeon E5-1603 v4 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1422	1558
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.56	6.70
Market segment	Server	Server
Series	no data	Intel Xeon E5
Architecture codename	Westmere-EP (2010−2011)	Broadwell (2015−2019)
Release date	14 February 2011 (13 years ago)	20 June 2016 (8 years ago)
Launch price (MSRP)	$45	no data
Current price	$89 (2x MSRP)	$66

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E5-1603 v4 has 329% better value for money than Xeon E5649.

Detailed specifications

Xeon E5649 and Xeon E5-1603 v4 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)	4 (Quad-Core)
Threads	12	4
Base clock speed	2.53 GHz	2.8 GHz
Boost clock speed	2.93 GHz	2.8 GHz
Bus support	no data	5 GT/s
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	1 MB
L3 cache	12288 KB (shared)	10 MB
Chip lithography	32 nm	14 nm
Die size	239 mm2	246.24 mm2
Maximum core temperature	76 °C	69 °C
Number of transistors	1,170 million	3200 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5649 and Xeon E5-1603 v4 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	1
Socket	FCLGA1366	FCLGA2011-3
Power consumption (TDP)	80 Watt	140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5649 and Xeon E5-1603 v4. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® AVX2
AES-NI	+	+
AVX	no data	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	-
TSX	no data	+
Idle States	+	+
Thermal Monitoring	-	+
Flex Memory Access	no data	-
Demand Based Switching	+	+
PAE	40 Bit	46 Bit
Turbo Boost Max 3.0	no data	-
Status	Discontinued	Launched

Security technologies

Xeon E5649 and Xeon E5-1603 v4 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
Identity Protection	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5649 and Xeon E5-1603 v4 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5649 and Xeon E5-1603 v4. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-1600, DDR4-1866, DDR4-2133
Maximum memory size	288 GB	1.5 TB
Max memory channels	3	4
Maximum memory bandwidth	32 GB/s	68 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5649 and Xeon E5-1603 v4.

PCIe version	2.0	3.0
PCI Express lanes	no data	40

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.

E5649 outperforms E5-1603 v4 by 21% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	3.68	3.03
Recency	14 February 2011	20 June 2016
Physical cores	6	4
Threads	12	4
Chip lithography	32 nm	14 nm
Power consumption (TDP)	80 Watt	140 Watt

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Should you still have questions on choice between Xeon E5649 and Xeon E5-1603 v4, ask them in Comments section, and we shall answer.

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