Core i9-12900E vs Core 2 Duo E6400

Primary details

Comparing Core 2 Duo E6400 and Core i9-12900E processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	382
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	no data	24.45
Architecture codename	Conroe (2006−2007)	Alder Lake-S (2022)
Release date	July 2006 (18 years ago)	4 January 2022 (2 years ago)

Detailed specifications

Core 2 Duo E6400 and Core i9-12900E 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	2 (Dual-core)	16 (Hexadeca-Core)
Threads	2	24
Base clock speed	2.13 GHz	2.3 GHz
Boost clock speed	2.13 GHz	5 GHz
Bus rate	1066 MHz	no data
L1 cache	64 KB	80K (per core)
L2 cache	2 MB	1.25 MB (per core)
L3 cache	0 KB	30 MB (shared)
Chip lithography	65 nm	10 nm
Die size	143 mm2	215 mm2
Maximum core temperature	61 °C	no data
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	291 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	0.85V-1.5V	no data

Compatibility

Information on Core 2 Duo E6400 and Core i9-12900E 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,PLGA775	1700
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E6400 and Core i9-12900E. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Duo E6400 and Core i9-12900E 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 Duo E6400 and Core i9-12900E are enumerated here.

VT-d	no data	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E6400 and Core i9-12900E. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR4, DDR5 Dual-channel

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel UHD Graphics 770

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E6400 and Core i9-12900E.

PCIe version	no data	5.0
PCI Express lanes	no data	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

---

Pros & cons summary

---

Physical cores	2	16
Threads	2	24
Chip lithography	65 nm	10 nm

---

Should you still have questions on choice between Core 2 Duo E6400 and Core i9-12900E, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---