Core 2 Quad Q9400 vs Phenom II X2 X640 BE

Athlon II P320 Athlon II P340 Athlon II P360 Phenom II X3 N830 Phenom II X4 N930 Phenom II X4 N970 Phenom II X4 P960 Turion II P520 Turion II P540 V-Series V120 V-Series V140 V-Series V160
VS
Core 2 Extreme QX9650 Core 2 Extreme QX9770 Core 2 Extreme QX9775 Core 2 Quad Q8200 Core 2 Quad Q8300 Core 2 Quad Q8400 Core 2 Quad Q9300 Core 2 Quad Q9400 Core 2 Quad Q9450 Core 2 Quad Q9505 Core 2 Quad Q9550s Core 2 Quad Q9650

Aggregate performance score

Phenom II X2 X640 BE
2011
2 cores / 2 threads, 45 Watt
1.04
Core 2 Quad Q9400
2008
4 cores / 4 threads, 95 Watt
1.39
+33.7%

Core 2 Quad Q9400 outperforms Phenom II X2 X640 BE by a substantial 34% based on our aggregate benchmark results.

Contents

Phenom II X2 X640 BE Phenom II X2 X640 BE
Core 2 Quad Q9400 Core 2 Quad Q9400

Primary details

Comparing Phenom II X2 X640 BE and Core 2 Quad Q9400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking24502238
Place by popularitynot in top-100not in top-100
Market segmentLaptopDesktop processor
Series2x AMD Phenom IIno data
Power efficiency2.111.33
Architecture codenameChamplain (2010−2011)Yorkfield (2007−2009)
Release date12 May 2011 (13 years ago)August 2008 (16 years ago)

Detailed specifications

Phenom II X2 X640 BE and Core 2 Quad Q9400 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 cores2 (Dual-core)4 (Quad-Core)
Threads24
Base clock speedno data2.66 GHz
Boost clock speed3.2 GHz2.67 GHz
Bus rate3600 MHz1333 MHz
L1 cache256 KB64K (per core)
L2 cache2 MB6 MB (shared)
L3 cacheno data0 KB
Chip lithography45 nm45 nm
Die sizeno data2x 81 mm2
Maximum case temperature (TCase)no data71 °C
Number of transistorsno data456 million
64 bit support++
Windows 11 compatibility--
VID voltage rangeno data0.85V-1.3625V

Compatibility

Information on Phenom II X2 X640 BE and Core 2 Quad Q9400 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 configurationno data1
SocketS1LGA775
Power consumption (TDP)45 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X2 X640 BE and Core 2 Quad Q9400. You'll probably need this information if you require some particular technology.

Instruction set extensionsMMX, 3DNow!, SSE1-3A, AMD64, Enhanced Virus Protection, Virtualizationno data
VirusProtect+-
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Thermal Monitoring-+
Demand Based Switchingno data-
FSB parityno data-

Security technologies

Phenom II X2 X640 BE and Core 2 Quad Q9400 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X2 X640 BE and Core 2 Quad Q9400 are enumerated here.

AMD-V+-
VT-dno data+
VT-xno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X2 X640 BE and Core 2 Quad Q9400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR1, DDR2, DDR3

Gaming performance

Pros & cons summary

Performance score 1.04 1.39
Physical cores 2 4
Threads 2 4
Power consumption (TDP) 45 Watt 95 Watt

Phenom II X2 X640 BE has 111.1% lower power consumption.

Core 2 Quad Q9400, on the other hand, has a 33.7% higher aggregate performance score, and 100% more physical cores and 100% more threads.

The Core 2 Quad Q9400 is our recommended choice as it beats the Phenom II X2 X640 BE in performance tests.

Be aware that Phenom II X2 X640 BE is a notebook processor while Core 2 Quad Q9400 is a desktop one.

Should you still have questions on choice between Phenom II X2 X640 BE and Core 2 Quad Q9400, ask them in Comments section, and we shall answer.

Vote for your favorite

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AMD Phenom II X2 X640 BE
Phenom II X2 X640 BE
Intel Core 2 Quad Q9400
Core 2 Quad Q9400
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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.

2.2 5 votes

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4.3 1546 votes

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Questions & comments

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