Phenom X4 9850 (125W) vs Core 2 Duo E6420

Primary details

Comparing Core 2 Duo E6420 and Phenom X4 9850 (125W) processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Architecture codename	Conroe (2006−2007)	Agena (2007−2008)
Release date	April 2007 (17 years ago)	July 2008 (16 years ago)

Detailed specifications

Core 2 Duo E6420 and Phenom X4 9850 (125W) 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)	4 (Quad-Core)
Threads	2	4
Base clock speed	2.13 GHz	no data
Boost clock speed	2.13 GHz	2.5 GHz
Bus rate	1066 MHz	no data
L1 cache	64 KB	128 KB (per core)
L2 cache	4 MB	512 KB (per core)
L3 cache	0 KB	2 MB (shared)
Chip lithography	65 nm	65 nm
Die size	111 mm2	285 mm2
Maximum core temperature	60 °C	no data
Number of transistors	167 million	450 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.5V	no data

Compatibility

Information on Core 2 Duo E6420 and Phenom X4 9850 (125W) 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	PLGA775	AM2+
Power consumption (TDP)	65 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E6420 and Phenom X4 9850 (125W). You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Duo E6420 and Phenom X4 9850 (125W) technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E6420 and Phenom X4 9850 (125W) are enumerated here.

AMD-V	-	+
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E6420 and Phenom X4 9850 (125W). Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

no data

Pros & cons summary

---

Physical cores	2	4
Threads	2	4
Power consumption (TDP)	65 Watt	125 Watt

---

Should you still have questions on choice between Core 2 Duo E6420 and Phenom X4 9850 (125W), 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.

---