Core 2 Extreme X9100 vs Core i7-965

Primary details

Comparing Core i7-965 and Core 2 Extreme X9100 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1848	2267
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.45	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core 2 Extreme
Power efficiency	1.57	2.78
Architecture codename	Bloomfield (2008−2010)	Penryn (2008−2011)
Release date	November 2008 (16 years ago)	15 July 2008 (16 years ago)
Launch price (MSRP)	$1,509	$851

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-965 and Core 2 Extreme X9100 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)	2 (Dual-core)
Threads	8	2
Base clock speed	3.2 GHz	3.06 GHz
Boost clock speed	3.46 GHz	3.06 GHz
Bus rate	6.4 GT/s	1066 MHz
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	6 MB
L3 cache	8 MB (shared)	0 KB
Chip lithography	45 nm	45 nm
Die size	263 mm2	107 mm2
Maximum core temperature	68 °C	105 °C
Number of transistors	731 million	410 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-
VID voltage range	no data	1.05-1.2625V

Compatibility

Information on Core i7-965 and Core 2 Extreme X9100 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	FCLGA1366	PGA478
Power consumption (TDP)	130 Watt	44 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-965 and Core 2 Extreme X9100. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	-
Idle States	+	-
Demand Based Switching	-	-
PAE	36 Bit	no data
AMT	no data	+
FSB parity	no data	-

Security technologies

Core i7-965 and Core 2 Extreme X9100 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-965 and Core 2 Extreme X9100 are enumerated here.

VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-965 and Core 2 Extreme X9100. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	24 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	25.6 GB/s	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.

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Pros & cons summary

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Performance score	2.16	1.30
Physical cores	4	2
Threads	8	2
Power consumption (TDP)	130 Watt	44 Watt

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Should you still have questions on choice between Core i7-965 and Core 2 Extreme X9100, ask them in Comments section, and we shall answer.

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