Core 2 Extreme X7800 vs Xeon X5675

Primary details

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

Place in the ranking	1788	3128
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.78	no data
Market segment	Server	Laptop
Series	no data	Intel Core 2 Extreme
Power efficiency	1.64	0.62
Designer	Intel	Intel
Manufacturer	Intel	no data
Architecture codename	Westmere-EP (2010−2011)	Merom XE (2007)
Release date	14 February 2011 (15 years ago)	17 July 2007 (19 years ago)
Launch price (MSRP)	$162	$851

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon X5675 and Core 2 Extreme X7800 have a nearly equal value for money.

Performance to price scatter graph

Currently popular graphics cards are shown for comparison.

Detailed specifications

Basic parameters of Xeon X5675 and Core 2 Extreme X7800: 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)	2 (Dual-core)
Threads	12	2
Base clock speed	3.06 GHz	2.6 GHz
Boost clock speed	3.46 GHz	2.6 GHz
Bus rate	no data	800 MHz
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	4 MB
L3 cache	12288 KB (shared)	4 MB L2 Cache
Chip lithography	32 nm	65 nm
Die size	239 mm2	143 mm2
Maximum core temperature	81 °C	100 °C
Number of transistors	1,170 million	291 Million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	1.1V-1.375V

Compatibility

Information on Xeon X5675 and Core 2 Extreme X7800 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	no data
Socket	FCLGA1366,LGA1366	PPGA478
Power consumption (TDP)	95 Watt	44 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon X5675 and Core 2 Extreme X7800. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
AES-NI	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	-
Idle States	+	no data
Demand Based Switching	+	-
PAE	40 Bit	no data
FSB parity	no data	-

Security technologies

Xeon X5675 and Core 2 Extreme X7800 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon X5675 and Core 2 Extreme X7800 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 X5675 and Core 2 Extreme X7800. Depending on the motherboard, higher memory frequencies may be supported.

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

Peripherals

Specifications and connection of peripherals supported by Xeon X5675 and Core 2 Extreme X7800.

PCIe version

2.0

no data

Synthetic benchmarks

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.

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Pros & cons summary

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Performance score	3.76	0.66
Recency	14 February 2011	17 July 2007
Physical cores	6	2
Threads	12	2
Chip lithography	32 nm	65 nm
Power consumption (TDP)	95 Watt	44 Watt