Intel Core2 Duo T5800 vs Intel Core2 Extreme QX9300: comparison

Comparison of Intel Core2 Duo T5800 and Intel Core2 Extreme QX9300: key differences and a full specification table.

Key differences

Intel Core2 Duo T5800 has a lower TDP (35 W vs 45 W).

At the same time, Intel Core2 Extreme QX9300 has more cores (4 vs 2), more threads (4 vs 2), a higher base clock (2.53 GHz vs 2 GHz) and a finer process node (45 nm vs 65 nm).

These are specification values: they show differences between the models but do not determine a performance winner. For a specific workload, rely on independent benchmarks.

Key specifications

ParameterIntel Core2 Duo T5800Intel Core2 Extreme QX9300
Cores / threads 2 / 2 4 / 4
TDP 35 W 45 W
Process 65 nm 45 nm

Full specification table

Differing values are highlighted. This is not a better/worse rating: numbers from different architectures are not always comparable.

Parameter Intel Core2 Duo T5800 Intel Core2 Extreme QX9300
General
Model T5800 QX9300
Codename Merom Penryn
Segment Mobile Mobile
Product line Legacy Intel Core Processors Legacy Intel Core Processors
Process 65 nm 45 nm
Launch date Q4 2008 Q3 2008
Status Discontinued Discontinued
Servicing status End of Servicing Updates End of Servicing Updates
Embedded options available No No
CPU
Cores 2 4
Threads 2 4
Multithreading (SMT/HT) No No
Base clock 2 GHz 2.53 GHz
L2 cache 2 MB 12 MB
Bus speed 800 MHz 1.066 GHz
TDP 35 W 45 W
Turbo Boost No No
64-bit support Yes Yes
Instruction set width 64 bit 64 bit
VID voltage range 1.075V-1.175V 1.050V-1.175V
FSB parity No No
Package and thermal
Sockets supported PPGA478 PGA478
Package size 35mm x 35mm 35mm x 35mm
TJUNCTION 85 °C 100 °C
Die size 143 mm² 214 mm²
Transistors (millions) 291 million 820 million
Security and virtualization
Virtualization (VT-x / AMD-V) No Yes
Execute Disable Bit Yes Yes
Technologies
Enhanced SpeedStep Yes Yes

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