Pentium D 950 vs Core 2 Duo P8400

Primary details

Comparing Core 2 Duo P8400 and Pentium D 950 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2841	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core 2 Duo	no data
Power efficiency	2.01	no data
Architecture codename	Penryn (2008−2011)	Presler (2005−2007)
Release date	15 July 2008 (16 years ago)	16 January 2006 (18 years ago)
Launch price (MSRP)	$209	$637

Detailed specifications

Core 2 Duo P8400 and Pentium D 950 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)	2 (Dual-core)
Threads	2	2
Base clock speed	2.26 GHz	3.4 GHz
Boost clock speed	2.26 GHz	3.4 GHz
Bus rate	1066 MHz	no data
L1 cache	128 KB	16 KB (per core)
L2 cache	3 MB	2 MB (per die)
L3 cache	3 MB L2 Cache	0 KB
Chip lithography	45 nm	65 nm
Die size	107 mm2	2x 81 mm2
Maximum core temperature	105 °C	C1+D0=63 °C, B1=69 °C
Number of transistors	410 Million	376 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.05V-1.15V	1.2V-1.3375V

Compatibility

Information on Core 2 Duo P8400 and Pentium D 950 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	no data	1
Socket	BGA479,PBGA479,PGA478	LGA775,PLGA775
Power consumption (TDP)	25 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo P8400 and Pentium D 950. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Demand Based Switching	-	-
PAE	no data	32 Bit
FSB parity	-	-

Security technologies

Core 2 Duo P8400 and Pentium D 950 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo P8400 and Pentium D 950 are enumerated here.

VT-d	no data	-
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo P8400 and Pentium D 950. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR1, DDR2, DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

On certain motherboards (Chipset feature)

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

---

Recency	15 July 2008	16 January 2006
Chip lithography	45 nm	65 nm
Power consumption (TDP)	25 Watt	130 Watt

---

Should you still have questions on choice between Core 2 Duo P8400 and Pentium D 950, 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.

---