Xeon X6550 vs E5649

Primary details

Comparing Xeon E5649 and Xeon X6550 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1423	2216
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.56	0.16
Market segment	Server	Server
Architecture codename	Westmere-EP (2010−2011)	no data
Release date	14 February 2011 (13 years ago)	1 January 2010 (14 years ago)
Launch price (MSRP)	$45	no data
Current price	$98 (2.2x MSRP)	$77

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E5649 has 875% better value for money than Xeon X6550.

Detailed specifications

Xeon E5649 and Xeon X6550 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)	8 (Octa-Core)
Threads	12	16
Base clock speed	2.53 GHz	2 GHz
Boost clock speed	2.93 GHz	2.4 GHz
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	no data
L3 cache	12288 KB (shared)	18 MB L3 Cache
Chip lithography	32 nm	45 nm
Die size	239 mm2	no data
Maximum core temperature	76 °C	69 °C
Number of transistors	1,170 million	no data
64 bit support	+	-
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5649 and Xeon X6550 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	no data
Socket	FCLGA1366	FCLGA1567
Power consumption (TDP)	80 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5649 and Xeon X6550. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5649 and Xeon X6550 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5649 and Xeon X6550 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5649 and Xeon X6550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	288 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	32 GB/s	no data
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E5649 and Xeon X6550.

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.

E5649 outperforms X6550 by 194% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	3.68	1.25
Recency	14 February 2011	1 January 2010
Physical cores	6	8
Threads	12	16
Chip lithography	32 nm	45 nm
Power consumption (TDP)	80 Watt	130 Watt

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Should you still have questions on choice between Xeon E5649 and Xeon X6550, ask them in Comments section, and we shall answer.

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