Processor U300 vs Xeon E5649

Primary details

Comparing Xeon E5649 and Processor U300 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1510	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.56	no data
Market segment	Server	Laptop
Series	no data	Intel Raptor Lake-U
Power efficiency	4.24	no data
Architecture codename	Westmere-EP (2010−2011)	Raptor Lake-U (2023)
Release date	14 February 2011 (13 years ago)	4 January 2023 (1 year ago)
Launch price (MSRP)	$45	$193

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5649 and Processor U300 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)	5 (Penta-Core)
Threads	12	6
Base clock speed	2.53 GHz	1.2 GHz
Boost clock speed	2.93 GHz	4.4 GHz
Bus rate	no data	55 MHz
L1 cache	64 KB (per core)	80K (per core)
L2 cache	256 KB (per core)	1.25 MB (per core)
L3 cache	12288 KB (shared)	8 MB (shared)
Chip lithography	32 nm	10 nm
Die size	239 mm2	no data
Maximum core temperature	76 °C	100 °C
Number of transistors	1,170 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Xeon E5649 and Processor U300 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	Intel BGA 1744
Power consumption (TDP)	80 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5649 and Processor U300. 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)	+	+
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
TSX	-	+
Idle States	+	no data
Demand Based Switching	+	no data
PAE	40 Bit	no data

Security technologies

Xeon E5649 and Processor U300 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5649 and Processor U300 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5649 and Processor U300. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4, DDR5 Dual-channel
Maximum memory size	288 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	32 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel UHD Graphics Xe G4 48EUs

Peripherals

Specifications and connection of peripherals supported by Xeon E5649 and Processor U300.

PCIe version	2.0	4.0
PCI Express lanes	no data	8

Pros & cons summary

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Recency	14 February 2011	4 January 2023
Physical cores	6	5
Threads	12	6
Chip lithography	32 nm	10 nm
Power consumption (TDP)	80 Watt	15 Watt

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