Athlon II X4 631 vs Core 2 Quad Q8400

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Aggregate performance score

Core 2 Quad Q8400
2009
4 cores / 4 threads, 95 Watt
1.30
Athlon II X4 631
2011
4 cores / 4 threads, 100 Watt
1.34
+3.1%

Athlon II X4 631 outperforms Core 2 Quad Q8400 by a minimal 3% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Quad Q8400 and Athlon II X4 631 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking22812259
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency1.301.27
Architecture codenameYorkfield (2007−2009)Llano (2011−2012)
Release date19 April 2009 (15 years ago)17 August 2011 (13 years ago)

Detailed specifications

Core 2 Quad Q8400 and Athlon II X4 631 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 GHz2.6 GHz
Boost clock speed0.67 GHz2.6 GHz
Bus rate1333 MHzno data
L1 cache64 KB (per core)128 KB (per core)
L2 cache4 MB (shared)1 MB (per core)
L3 cache0 KB0 KB
Chip lithography45 nm32 nm
Die size2x 82 mm2228 mm2
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million1,178 million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Athlon II X4 631 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
SocketFCLGA775,LGA775FM1
Power consumption (TDP)95 Watt100 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Athlon II X4 631. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Quad Q8400 and Athlon II X4 631 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 Q8400 and Athlon II X4 631 are enumerated here.

AMD-V-+
VT-x+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Athlon II X4 631. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Athlon II X4 631.

PCIe version2.0no data

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 Q8400 1.30
Athlon II X4 631 1.34
+3.1%

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.

Core 2 Quad Q8400 2068
Athlon II X4 631 2122
+2.6%

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.

Core 2 Quad Q8400 328
+18%
Athlon II X4 631 278

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.

Core 2 Quad Q8400 898
+3.7%
Athlon II X4 631 866

Gaming performance

Pros & cons summary


Performance score 1.30 1.34
Recency 19 April 2009 17 August 2011
Chip lithography 45 nm 32 nm
Power consumption (TDP) 95 Watt 100 Watt

Core 2 Quad Q8400 has 5.3% lower power consumption.

Athlon II X4 631, on the other hand, has a 3.1% higher aggregate performance score, an age advantage of 2 years, and a 40.6% more advanced lithography process.

Given the minimal performance differences, no clear winner can be declared between Core 2 Quad Q8400 and Athlon II X4 631.


Should you still have questions on choice between Core 2 Quad Q8400 and Athlon II X4 631, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q8400
Core 2 Quad Q8400
AMD Athlon II X4 631
Athlon II X4 631

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Community ratings

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


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Questions & comments

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