Core 2 Extreme QX9300 vs Xeon E5420

Primary details

Comparing Xeon E5420 and Core 2 Extreme QX9300 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2173	2271
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.24	no data
Market segment	Server	Laptop
Series	no data	Core 2 Extreme
Architecture codename	no data	Penryn (2008−2011)
Release date	1 October 2007 (16 years ago)	August 2008 (15 years ago)
Current price	$121	$844

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5420 and Core 2 Extreme QX9300 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	2.5 GHz	2.53 GHz
Boost clock speed	no data	2.53 GHz
Bus support	no data	1066 MHz
L1 cache	no data	64 KB
L2 cache	no data	12 MB
L3 cache	12 MB L2 Cache	0 KB
Chip lithography	45 nm	45 nm
Die size	no data	2x 107 mm2
Maximum core temperature	67 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	Yes
VID voltage range	0.85V-1.35V	1.05V-1.175V

Compatibility

Information on Xeon E5420 and Core 2 Extreme QX9300 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	no data	2
Socket	LGA771	PGA478
Power consumption (TDP)	80 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5420 and Core 2 Extreme QX9300. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5420 and Core 2 Extreme QX9300 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5420 and Core 2 Extreme QX9300 are enumerated here.

VT-x	+	+
EPT	-	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.

Xeon E5420 outperforms Core 2 Extreme QX9300 by 12% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	1.31	1.17
Power consumption (TDP)	80 Watt	45 Watt

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Should you still have questions on choice between Xeon E5420 and Core 2 Extreme QX9300, ask them in Comments section, and we shall answer.

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