Core 2 Extreme QX9650 vs Xeon E5-1603

Primary details

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

Place in the ranking	2120	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Power efficiency	1.63	no data
Designer	Intel	Intel
Architecture codename	no data	Yorkfield (2007−2009)
Release date	1 January 2012 (13 years ago)	November 2007 (18 years ago)

Detailed specifications

Xeon E5-1603 and Core 2 Extreme QX9650 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	4 (Quad-Core)	4 (Quad-Core)
Threads	4	4
Base clock speed	2.8 GHz	3 GHz
Boost clock speed	no data	3 GHz
Bus rate	0 GT/s	1333 MHz
L1 cache	no data	64K (per core)
L2 cache	no data	12 MB (shared)
L3 cache	10 MB	0 KB
Chip lithography	32 nm	45 nm
Die size	no data	2x 107 mm2
Maximum core temperature	64 °C	no data
Maximum case temperature (TCase)	no data	64 °C
Number of transistors	no data	820 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+
VID voltage range	0.6V - 1.35V	0.85V-1.3625V

Compatibility

Information on Xeon E5-1603 and Core 2 Extreme QX9650 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	1	1
Socket	FCLGA2011	LGA775
Power consumption (TDP)	130 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-1603 and Core 2 Extreme QX9650. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Demand Based Switching	+	-
FSB parity	no data	+

Security technologies

Xeon E5-1603 and Core 2 Extreme QX9650 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-1603 and Core 2 Extreme QX9650 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-1603 and Core 2 Extreme QX9650. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800, DDR3-1066	DDR1, DDR2, DDR3
Maximum memory size	375 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	31.4 GB/s	no data
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E5-1603 and Core 2 Extreme QX9650.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Chip lithography

32 nm

45 nm

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