AMD Athlon II X4 640 vs Intel Core 2 Quad Q9400

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Combined performance score

Core 2 Quad Q9400
1.38

Athlon II X4 640 outperforms Core 2 Quad Q9400 by 5% in our combined benchmark results.

General info

Comparing Core 2 Quad Q9400 and Athlon II X4 640 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking20942050
Place by popularitynot in top-100not in top-100
Value for money3.512.92
Market segmentDesktop processorDesktop processor
Architecture codenameYorkfield (2007−2009)Propus (2009−2011)
Release dateAugust 2008 (15 years old)11 May 2010 (13 years old)
Launch price (MSRP)no data$80
Current price$62 $67 (0.8x MSRP)
Value for money

Performance per price, higher is better.

Core 2 Quad Q9400 has 20% better value for money than Athlon II X4 640.

Technical specs

Core 2 Quad Q9400 and Athlon II X4 640 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 cores4 (Quad-Core)4 (Quad-Core)
Threads44
Base clock speed2.66 GHz3 GHz
Boost clock speed2.67 GHz3 GHz
L1 cache64K (per core)128 KB (per core)
L2 cache6 MB (shared)512 KB (per core)
L3 cache0 KB0 KB
Chip lithography45 nm45 nm
Die size2x 81 mm2169 mm2
Maximum core temperature71 °Cno data
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million300 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q9400 and Athlon II X4 640 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 configuration11
SocketLGA775AM3
Power consumption (TDP)95 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Athlon II X4 640. You'll probably need this information if you require some particular technology.

AES-NI-no data
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology-no data
Hyper-Threading Technology-no data
Idle States+no data
Thermal Monitoring+no data
Demand Based Switching-no data
FSB parity-no data
StatusDiscontinuedno data

Security technologies

Core 2 Quad Q9400 and Athlon II X4 640 technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400 and Athlon II X4 640 are enumerated here.

VT-d+no data
VT-x+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Athlon II X4 640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR3

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Athlon II X4 640.

PCIe versionno data2.0

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Quad Q9400 1.38
Athlon II X4 640 1.45
+5.1%

Athlon II X4 640 outperforms Core 2 Quad Q9400 by 5% in our combined benchmark results.


Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

Core 2 Quad Q9400 2112
Athlon II X4 640 2234
+5.8%

Athlon II X4 640 outperforms Core 2 Quad Q9400 by 6% in Passmark.

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 42%

Core 2 Quad Q9400 338
+9%
Athlon II X4 640 310

Core 2 Quad Q9400 outperforms Athlon II X4 640 by 9% in GeekBench 5 Single-Core.

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 42%

Core 2 Quad Q9400 947
+0.7%
Athlon II X4 640 940

Core 2 Quad Q9400 outperforms Athlon II X4 640 by 1% in GeekBench 5 Multi-Core.

3DMark Fire Strike Physics

Benchmark coverage: 4%

Core 2 Quad Q9400 4280
+3.1%
Athlon II X4 640 4150

Core 2 Quad Q9400 outperforms Athlon II X4 640 by 3% in 3DMark Fire Strike Physics.

Gaming performance

Advantages and disadvantages


Performance score 1.38 1.45

We couldn't decide between Core 2 Quad Q9400 and Athlon II X4 640. The differences in performance seem too small.


Should you still have questions on choice between Core 2 Quad Q9400 and Athlon II X4 640, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core 2 Quad Q9400
Core 2 Quad Q9400
AMD Athlon II X4 640
Athlon II X4 640

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User ratings: view and submit

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4.3 1412 votes

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Questions and comments

Here you can ask a question about Core 2 Quad Q9400 or Athlon II X4 640, agree or disagree with our judgements, or report an error or mismatch.