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Dual-Core 2 Duo Computer Processors

The Dual-Core 2 Duo computer processors were one of the first dual-core and 64-bit processors ever developed by the American technology company Intel. Released in a short period between July 2006 and January 2008, the Core 2 Duo encompasses a large range of Intel processors for desktop and laptop computers. Each of them contains different architectures, frequencies, features, and memory.

New Listing (4) Intel Dual Core i3-4130 3.40Ghz LGA 1150 Socket SR1NP CPU Computer Processor. 5.0 out of 5 stars. 5 product ratings - (4). Genuine Intel Pentium B960 Dual-Core Processor CPU 2.20GHz SR07V 04W1892. Dual Core describes the technology. A CPU with 2 internal cores running simultaneously. Core 2 Duo is Intel's brand name of dual-core processor. P3 = 3rd generation Pentium (. Robust multitasking capabilities ensure that a computing platform featuring the dual-core Intel Core 2 Duo processor won't slow down, even when running.

The Core 2 Duo is a series of dual-core 64-bit processors that are generally based on Intel's Core micro-architecture. They are made with either a 45 nanometers or 65 nanometers process. This determines the number of transistors that can fit on a single chip. The actual clock speed of these chips can vary widely. The best models can achieve a frequency of 3.33 GHz, while the lowest run at around 1.87 GHz. The thermal design power of all Duos (meaning the maximum amount of heat that the chip can reasonably dissipate) is 65 watts. Another important feature is the amount of L2 cache. A CPU cache is a small pool of memory that reduces the average time and energy it takes to access data from the main memory. The L2 memory in the Core 2 Duo varies between 2MB and 6MB in size. In addition, all models of the Duo fit into an LGA 775 socket on a computer's motherboard. The only exception is the Conroe-CL, which is instead compatible with the LGA 771 socket on certain computers.

Apart from its dual-core design, the Core 2 Duo supports some advanced features that result in a more secure and streamlined performance:

• Intel SpeedStep technology dynamically alters the frequency of the chip to better meet the needs of the software program.
• Intel XD bit technology is designed to prevent certain types of malicious software and buffer overflow attacks from inserting their code into a program's data storage area and executing that code on your system.
• Virtualization technology can create a second virtual system on the same computer.
• All models of the Core 2 Duo support MMX, SSE, SSE2, SSE3, and SSSE3 instruction sets while only the more advanced models support SSE4.1.

The main advantage of a dual-core design over a simple single-core design is that it is generally better at multi-tasking. Dual-core chips can process entirely separate workloads in parallel with each other (for example, a video game and an anti-virus program) while sharing the same architecture and memory. The efficacy of the parallel processing depends on how it is implemented by the software program, but in general, a multi-core CPU has a distinct advantage over a single-core CPU. In addition, the Core 2 Duo offers plenty of speed and security, making it a more attractive option if you wish to upgrade your computer from a more basic CPU.

The Core 2 brand refers to Intel's x86/x86-64microprocessors with the Core microarchitecture targeted at the consumer and business markets (except servers) above Pentium. The Core 2 solo branch covered single-core CPUs for notebook computers, Core 2 Duo – dual-core CPUs for both desktop and notebook computers, Core 2 Quad – quad-core CPUs for both desktop and notebook computers, and Core 2 Extreme – dual-core and quad-core CPUs for both desktop and notebook computers.

• 1Desktop processors
  • 1.1Dual-Core Desktop processors
    • 1.1.1Core 2 Duo
    • 1.1.2Core 2 Extreme
  • 1.2Quad-Core Desktop processors
    • 1.2.1Core 2 Quad
    • 1.2.2Core 2 Extreme
• 2Notebook (mobile) processors
  • 2.1Single-Core Notebook processors
    • 2.1.1Core 2 Solo
  • 2.2Dual-Core Notebook processors
    • 2.2.1Core 2 Duo
    • 2.2.2Core 2 Extreme
  • 2.3Quad-Core Notebook processors
    • 2.3.1Core 2 Quad
    • 2.3.2Core 2 Extreme

Desktop processors[edit]

Dual-Core Desktop processors[edit]

Core 2 Duo[edit]

'Conroe' (65 nm, 800 MT/s) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management)^a
• Die size: 111 mm²
• Steppings: L2^b, M0^c

^c Note: The M0 and G0 Steppings have better optimizations to lower idle power consumption from 12W to 8W.

'Conroe' (65 nm, 1066 MT/s) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management)^a
• All models support: Intel VT-x
• Die size: 143 mm²
• Steppings: B2, G0

^a Note: of the E6000 series processors, only models E6550, E6750, and E6850 support Intel's TXT.^[1]

^b Note: The L2 Stepping as well as the models with sSpec SL9ZL, SL9ZF, SLA4U, SLA4T have better optimizations to lower the idle power consumption from 22W to 12W.^[2]

^c Note: The M0 and G0 Steppings have better optimizations to lower idle power consumption from 12W to 8W.

'Conroe' (65 nm, 1333 MT/s) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management)^a
• All E6x00 models support: Intel VT-x
• All E6x50 models support: Intel VT-x, TXT
• Die size: 143 mm²
• Transistor count: 291 million
• Steppings: B2, G0

^a Note: of the E6000 series processors, only models E6550, E6750, and E6850 support Intel's TXT.^[1]

^b Note: The L2 Stepping as well as the models with sSpec SL9ZL, SL9ZF, SLA4U, SLA4T have better optimizations to lower the idle power consumption from 22W to 12W.^[2]

^c Note: The M0 and G0 Steppings have better optimizations to lower idle power consumption from 12W to 8W.

'Conroe-CL' (65 nm, 1066 MT/s)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Die size: 143 mm² (Conroe)
• Steppings: ?

'Wolfdale-3M' (45 nm, 1066 MT/s)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management)
• Die size: 82 mm²
• Transistor Count: 230 million
• Steppings: M0, R0
• Models with a part number ending in 'ML' instead of 'M' support Intel VT-x

'Wolfdale' (45 nm, 1333 MT/s)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management Technology), Intel VT-x^[a], Intel VT-d^[b], TXT
• Die size: 107 mm²
• Transistor Count: 410 million
• Steppings: C0, E0

^a Note: E8190 does not support Intel VT-x.

^b Note: E8190, E8200 does not support Intel VT-d.

See also: Versions of the same Wolfdale core in an LGA 771 are available under the Dual-Core Xeon brand.

Core 2 Extreme[edit]

'Conroe XE' (65 nm)[edit]

^[3][4]

These models feature an unlockedclock multiplier

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Die size: 143 mm²
• Steppings: B1, B2

Quad-Core Desktop processors[edit]

Core 2 Quad[edit]

'Kentsfield' (65 nm)[edit]

^[5][6]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x
• Die size: 2 ×143 mm²
• Steppings: B3, G0

'Yorkfield-6M' (45 nm)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x^[a], Intel VT-d^[b], TXT^[c]
• Die size: 2 × 82 mm²
• Steppings: M0, M1, R0
• All Q8xxx models are Yorkfield-6M MCMs with only 2 × 2 MB L2 cache enabled.

^a Note: Q8200, Q8200S, Q8300 SLB5W does not support Intel VT-x.

^b Note: Q8200, Q8200S, Q8300, Q8400, Q8400S, Q9500 does not support Intel VT-d.

^c Note: Q8200, Q8200S, Q8300, Q8400, Q8400S, Q9500 does not support TXT.

Yorkfield (45 nm)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, Intel VT-d, TXT
• Die size: 2 × 107 mm²
• Steppings: C0, C1, E0

Core 2 Extreme[edit]

'Kentsfield XE' (65 nm)[edit]

These models feature an unlockedclock multiplier

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x
• Die size: 2 ×143 mm²
• Steppings: B3, G0

'Yorkfield XE' (45 nm)[edit]

• These models feature an unlockedclock multiplier
• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x
• I/O Acceleration Technology (Intel I/OAT) supported by: QX9775
• Intel VT-d supported by: QX9650^[9]
• Die size: 2 × 107 mm²
• Steppings: C0, C1

Notebook (mobile) processors[edit]

Single-Core Notebook processors[edit]

Core 2 Solo[edit]

'Merom-L' (65 nm) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Die size: 81 mm²
• Steppings: A1

'Penryn-L' (45 nm) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT, IDA (Intel Dynamic Acceleration)
• Socket P processors are capable of throttling the front-side bus (FSB) anywhere between 400–800 MT/s as necessary.
• Die size: 82 mm²
• 228 million transistors
• Package size: 22 mm × 22 mm
• Steppings: M0, R0

Intel 2 Dual Core Processor Price

Dual-Core Notebook processors[edit]

Core 2 Duo[edit]

'Merom', 'Merom-2M' (standard-voltage, 65 nm) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management)
• Model T7600G features an unlocked clock multiplier.
• Intel VT-x: Supported by T5500 (L2), T5600 and all T7xxx
• Intel Dynamic Front Side Bus Frequency Switching: Supported by E1, G0, G2, M0 Steppings
• Socket P processors are capable of throttling the front-side bus (FSB) anywhere between 400–800 MT/s as necessary.
• Die size: 143 mm² (Merom), 111 mm² (Merom-2M)
• Steppings: B2, E1, G0, G2 (Merom), L2, M0 (Merom-2M)
• All models of stepping B2 released on July 2006, stepping L2 released on January 2007.

See also: Versions of the same Merom-2M core with half the L2 cache disabled are available under the Pentium Dual-Core brand.

'Merom' (low-voltage, 65 nm)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Intel Dynamic Front Side Bus Frequency Switching: Supported by E1, G0, G2 Steppings
• Die size: 143 mm²
• Steppings: B2, E1, G0, G2

'Merom-2M' (ultra-low-voltage, 65 nm)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x
• Die size: 111 mm²
• Steppings: L2, M0

'Penryn' (Apple iMac specific, 45 nm)[edit]

• Die size: 107 mm²
• The 2008 20' iMac used the E8135 and E8335 CPUs at a lower than specified clock frequency, explaining why the same model is used at different frequencies. This list shows the frequencies used by Apple.
• Steppings: C0, E0

'Penryn', 'Penryn-3M' (standard-voltage, 45 nm) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), IDA (Intel Dynamic Acceleration)^[17]
• T6570,^[18] T6670, all T8xxx and T9xxx models support Intel VT-x
• All T9xxx models support TXT
• T6xxx models are Penryn-3M processors with 1 MB L2 cache disabled.

Note that the models T8100, T8300, T9300, T9500 are Penryn processors designed for Santa Rosa Refresh platforms with maximum FSB of 800 MT/s, whereas the rest of the Penryn processors are designed for Montevina platforms that can go up to maximum FSB of 1066 MT/s.

Penryn processors support Dynamic Front Side Bus Throttling between 400–800MT/s.

Intel Dual Core Processors List

• Die size: 107 mm² (Penryn), 82 mm² (Penryn-3M)
• Steppings: C0, E0 (Penryn) M0, R0 (Penryn-3M)^[17]

'Penryn', 'Penryn-3M' (medium-voltage, 45 nm) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x (except the non-Mac P7350, P7450),^[19][20][21]TXT, IDA (Intel Dynamic Acceleration)
• Select Apple subsets of P7000 series processors support Intel VT-x.^[22]
• Penryn and Penryn-3M processors support Dynamic Front Side Bus Throttling between 533–1066MT/s.
• Die size: 107 mm² (Penryn), 82 mm² (Penryn-3M)
• Package size: 35 mm × 35 mm
• Transistors: 410 million ^[23]
• Steppings: C0, E0 (Penryn) M0, R0 (Penryn-3M)

'Penryn' (medium-voltage, 45 nm, Small Form Factor)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT, IDA (Intel Dynamic Acceleration)
• Die size: 107 mm²
• Package size: 22 mm × 22 mm
• Steppings: C0, E0

'Penryn' (low-voltage, 45 nm, Small Form Factor)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT, IDA (Intel Dynamic Acceleration)
• Die size: 107 mm²
• Package size: 22 mm × 22 mm
• Steppings: C0, E0

'Penryn-3M' (ultra-low-voltage, 45 nm, Small Form Factor)[edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT (except SU7300), IDA (Intel Dynamic Acceleration)
• Die size: 107 mm²
• Package size: 22 mm × 22 mm
• Steppings: M0, R0

Core 2 Extreme[edit]

'Merom XE' (65 nm) [edit]

These models feature an unlockedclock multiplier

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT, Intel Dynamic Front Side Bus Frequency Switching
• Merom XE processors support Dynamic Front Side Bus Throttling between 400–800 MT/s.
• Die size: 143 mm²
• Steppings: E1, G0

'Penryn XE' (45 nm) [edit]

• These models feature an unlockedclock multiplier
• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Penryn XE processors support Dynamic Front Side Bus Throttling between 400–800 MT/s and 533–1066 MT/s.
• Die size: 107 mm²
• Steppings: C0, E0

Quad-Core Notebook processors[edit]

Core 2 Quad[edit]

'Penryn QC' (45 nm) [edit]

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Capable of throttling the front-side bus (FSB) anywhere between 533–1066 MT/s as necessary.
• Die size: 2 × 107 mm²
• Steppings: E0

Core 2 Extreme[edit]

'Penryn QC XE' (45 nm) [edit]

• These models feature an unlockedclock multiplier usually manipulated through the systems BIOS however some manufacturers (such as HP) do not have this feature enabled on their laptops that use this processor.
• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), iAMT2 (Intel Active Management), Intel VT-x, TXT
• Capable of throttling the front-side bus (FSB) anywhere between 533–1066 MT/s as necessary.
• Package size: 35 mm × 35 mm
• Die size: 2 × 107 mm²
• Steppings: E0

See also[edit]

References[edit]

1. ^ ^ab'Advanced Technologies'. Intel Corporation. Retrieved 12 February 2010.
2. ^ ^abLess power greedy Core 2 Duo, BeHardware 15 November 2006
3. ^Details regarding Conroe modelsArchived 2006-12-31 at the Wayback Machine, 6 February 2006
4. ^DailyTech article on upcoming Core 2 Extreme CPUsArchived 2006-06-15 at the Wayback Machine, 31 May 2006
5. ^Intel Core 2 Quad Announced InternallyArchived 2006-09-21 at the Wayback Machine, DailyTech, 19 September 2006
6. ^Intel Hard-Launches Three New Quad-core ProcessorsArchived 2016-04-05 at the Wayback Machine, DailyTech, 7 January 2007
7. ^'SL9UN (Intel Core 2 Quad Q6400)'. CPU-World. Retrieved 2018-10-27.
8. ^'Kentsfield' to Debut at 2.66 GHzArchived 2006-10-21 at the Wayback Machine, DailyTech, 16 August 2006
9. ^https://ark.intel.com/products/35428/Intel-Core-2-Quad-Processor-Q9650-12M-Cache-3-00-GHz-1333-MHz-FSB-
10. ^Intel Corporation (11 November 2007). 'Intel's Fundamental Advance in Transistor Design Extends Moore's Law, Computing Performance'.
11. ^'SLA4C (Intel Core 2 Duo T5850)'. CPU-World. Retrieved 2018-10-27.
12. ^'SLB6D (Intel Core 2 Duo T5900)'. CPU-World. Retrieved 2018-10-27.
13. ^'SL9U5 (Intel Core 2 Duo T7600G)'. CPU-World. Retrieved 2018-10-27.
14. ^Shah, Agam (2008-02-11). 'Intel develops processor similar to MacBook Air chip'. InfoWorld. Retrieved 2018-10-27.
15. ^ ^ab[1]
16. ^Shimpi, Anand Lai (2008-01-17). 'The MacBook Air CPU Mystery: More Details Revealed'. AnandTech. Retrieved 2018-10-27.
17. ^ ^ab'Intel Core2 Duo Processor T6400 (2M Cache, 2.00 GHz, 800 MHz FSB)'. Intel Corporation. Archived from the original on 12 February 2009. Retrieved 6 February 2009.
18. ^'Intel Core2 Duo Processor T6570 (2M Cache, 2.10 GHz, 800 MHz FSB)'. Intel Corporation. Retrieved 20 March 2010.
19. ^'Archived copy'. Archived from the original on 2009-02-05. Retrieved 2009-02-09.CS1 maint: Archived copy as title (link)
20. ^'Archived copy'. Archived from the original on 2009-05-16. Retrieved 2009-05-02.CS1 maint: Archived copy as title (link)
21. ^http://ark.intel.com/Product.aspx?id=42014
22. ^Eric Tung (13 March 2009). 'Re: Does VMware Fusion require a CPU supporting Intel VT-x?'. Retrieved 18 April 2009.
23. ^'Tech ARP - Mobile CPU Comparison Guide Rev. 12.3'. Techarp.com. Retrieved Dec 18, 2015.
24. ^[2]
25. ^[3]

• ATI provides pointer to Intel's 'Allendale', 23 May 2006
• Rumoured prices and specifications for Intel Core 2, 30 May 2006
• TGDaily indicates leaked release dates^{[permanent dead link]}, 24 July 2006
• Intel to unveil five Merom CPUs in July, paper says(subscription required) as re-reported by DigiTimes, 17 July 2006
• Intel Unveils World's Best Processor,^{[dead link]} 27 July 2006
• Intel Takes Popular Laptops to 'Extreme' with First-Ever Extreme Edition Mobile Processor; Adds New Desktop Chip,^{[dead link]} 16 July 2007
• CORE 2 DUO 1333 MHZ STEPPING, 18 July 2007

External links[edit]

• SSPEC/QDF Reference (Intel)