Pentium D 915 vs Core 2 Duo T9900

Primary details

Comparing Core 2 Duo T9900 and Pentium D 915 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2651	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	2.03	no data
Architecture codename	Penryn (2008−2011)	Presler (2005−2007)
Release date	2 June 2009 (15 years ago)	23 July 2006 (18 years ago)
Launch price (MSRP)	$530	$74

Detailed specifications

Core 2 Duo T9900 and Pentium D 915 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	3.06 GHz	2.8 GHz
Boost clock speed	0.07 GHz	2.8 GHz
Bus rate	1066 MHz	no data
L1 cache	64 KB (per core)	16 KB (per core)
L2 cache	6 MB (shared)	2 MB (per die)
L3 cache	6 MB L2 Cache	0 KB
Chip lithography	45 nm	65 nm
Die size	107 mm2	2x 81 mm2
Maximum core temperature	105 °C	no data
Maximum case temperature (TCase)	no data	63 °C
Number of transistors	410 million	376 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.05V-1.2125V	1.2V-1.3375V

Compatibility

Information on Core 2 Duo T9900 and Pentium D 915 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	BGA479,PGA478	LGA775,PLGA775
Power consumption (TDP)	35 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T9900 and Pentium D 915. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Duo T9900 and Pentium D 915 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 T9900 and Pentium D 915 are enumerated here.

VT-d	no data	-
VT-x	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T9900 and Pentium D 915. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR2, DDR3

DDR1, DDR2, DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

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.

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Pros & cons summary

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Recency	2 June 2009	23 July 2006
Chip lithography	45 nm	65 nm
Power consumption (TDP)	35 Watt	95 Watt

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Should you still have questions on choice between Core 2 Duo T9900 and Pentium D 915, ask them in Comments section, and we shall answer.

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