Xeon E-2478 vs Core 2 Extreme QX9775

Primary details

Comparing Core 2 Extreme QX9775 and Xeon E-2478 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	314
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	82.64
Market segment	Desktop processor	Server
Power efficiency	no data	22.22
Architecture codename	Yorkfield (2007−2009)	Raptor Lake-S (2023−2024)
Release date	March 2008 (16 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	no data	$568

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Extreme QX9775 and Xeon E-2478 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)	8 (Octa-Core)
Threads	4	16
Base clock speed	3.2 GHz	2.8 GHz
Boost clock speed	3.2 GHz	5.2 GHz
Bus rate	1600 MHz	16 GT/s
L1 cache	64K (per core)	80 KB (per core)
L2 cache	12 MB (shared)	2 MB (per core)
L3 cache	0 KB	24 MB (shared)
Chip lithography	45 nm	Intel 7 nm
Die size	2x 107 mm2	257 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	63 °C	no data
Number of transistors	820 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Core 2 Extreme QX9775 and Xeon E-2478 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	LGA771	FCLGA1700
Power consumption (TDP)	150 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX9775 and Xeon E-2478. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	-	no data
Turbo Boost Max 3.0	no data	+
FSB parity	-	no data

Security technologies

Core 2 Extreme QX9775 and Xeon E-2478 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX9775 and Xeon E-2478 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9775 and Xeon E-2478. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR2	DDR5-4800
Maximum memory size	no data	128 GB
Max memory channels	no data	2
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme QX9775 and Xeon E-2478.

PCIe version	no data	5
PCI Express lanes	no data	16

Pros & cons summary

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Physical cores	4	8
Threads	4	16
Power consumption (TDP)	150 Watt	80 Watt

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Should you still have questions on choice between Core 2 Extreme QX9775 and Xeon E-2478, ask them in Comments section, and we shall answer.

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