Core Ultra 5 245K vs Core 2 Extreme QX6800

Primary details

Comparing Core 2 Extreme QX6800 and Core Ultra 5 245K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	175
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	78.36
Market segment	Desktop processor	Desktop processor
Power efficiency	no data	20.82
Architecture codename	Kentsfield (2007)	Arrow Lake-S (2024−2025)
Release date	April 2007 (17 years ago)	24 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$309

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Extreme QX6800 and Core Ultra 5 245K 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)	14 (Tetradeca-Core)
Threads	4	14
Base clock speed	2.93 GHz	4.2 GHz
Boost clock speed	2.93 GHz	5.2 GHz
Bus rate	1066 MHz	159 MHz
L1 cache	64K (per core)	112 KB (per core)
L2 cache	8 MB (shared)	3 MB (per core)
L3 cache	0 KB	24 MB (shared)
Chip lithography	65 nm	3 nm
Die size	2x 143 mm2	243 mm2
Maximum core temperature	65 °C	no data
Number of transistors	582 million	17,800 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	+
VID voltage range	0.85V-1.5V	no data

Compatibility

Information on Core 2 Extreme QX6800 and Core Ultra 5 245K 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	LGA775	1851
Power consumption (TDP)	130 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX6800 and Core Ultra 5 245K. You'll probably need this information if you require some particular technology.

AES-NI	-	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
SIPP	-	+
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Extreme QX6800 and Core Ultra 5 245K technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX6800 and Core Ultra 5 245K are enumerated here.

VT-d	no data	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX6800 and Core Ultra 5 245K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Arc Xe-LPG Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme QX6800 and Core Ultra 5 245K.

PCIe version	no data	5.0
PCI Express lanes	no data	20

Pros & cons summary

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Physical cores	4	14
Threads	4	14
Chip lithography	65 nm	3 nm
Power consumption (TDP)	130 Watt	125 Watt

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Should you still have questions on choice between Core 2 Extreme QX6800 and Core Ultra 5 245K, ask them in Comments section, and we shall answer.

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