Core 2 Quad Q9550 vs Xeon E5440

Place in the ranking	2139	2149
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Series	no data	Core 2 Quad (Desktop)
Power efficiency	1.77	1.47
Architecture codename	no data	Yorkfield (2007−2009)
Release date	1 January 2008 (16 years ago)	no data (2024 years ago)

Detailed specifications

Xeon E5440 and Core 2 Quad (Desktop) Q9550 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	no data	4 (Quad-Core)
Threads	no data	4
Base clock speed	2.83 GHz	no data
Boost clock speed	no data	2.83 GHz
Bus rate	no data	1333 MHz
L2 cache	no data	12288 KB
L3 cache	12 MB L2 Cache	no data
Chip lithography	45 nm	45 nm
Maximum core temperature	67 °C	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Xeon E5440 and Core 2 Quad (Desktop) Q9550 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.

Socket	LGA771	LGA775
Power consumption (TDP)	80 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5440 and Core 2 Quad (Desktop) Q9550. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	+	no data
FSB parity	+	no data

Security technologies

Xeon E5440 and Core 2 Quad (Desktop) Q9550 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 E5440 and Core 2 Quad (Desktop) Q9550 are enumerated here.

VT-x	+	no data
EPT	-	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and Core 2 Quad (Desktop) Q9550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR1,DDR2,DDR3

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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.

Xeon E5440 1.55
+1.3%

Core 2 Quad Q9550 1.53

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon E5440 2374
+1.2%

Core 2 Quad Q9550 2346

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Xeon E5440 368

Core 2 Quad Q9550 370
+0.5%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Xeon E5440 1040
+0.1%

Core 2 Quad Q9550 1039