Celeron G550 vs Core 2 Quad Q9400

Aggregate performance score

Core 2 Quad Q9400
2008
4 cores / 4 threads, 95 Watt
1.34
+69.6%
Celeron G550
2012
2 cores / 2 threads, 65 Watt
0.79

Core 2 Quad Q9400 outperforms Celeron G550 by an impressive 70% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Quad Q9400 and Celeron G550 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking22432610
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data1.65
Market segmentDesktop processorDesktop processor
Power efficiency1.331.15
Architecture codenameYorkfield (2007−2009)Sandy Bridge (2011−2013)
Release dateAugust 2008 (16 years ago)1 June 2012 (12 years ago)
Launch price (MSRP)no data$80

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core 2 Quad Q9400 and Celeron G550 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)2 (Dual-core)
Threads42
Base clock speed2.66 GHz2.6 GHz
Boost clock speed2.67 GHz2.6 GHz
Bus rate1333 MHz5 GT/s
L1 cache64K (per core)64 KB (per core)
L2 cache6 MB (shared)256 KB (per core)
L3 cache0 KB2 MB (shared)
Chip lithography45 nm32 nm
Die size2x 81 mm2131 mm2
Maximum core temperatureno data69 °C
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million504 million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q9400 and Celeron G550 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
SocketLGA775FCLGA1155
Power consumption (TDP)95 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Celeron G550. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2
Enhanced SpeedStep (EIST)++
Turbo Boost Technology--
Hyper-Threading Technology--
Idle States++
Thermal Monitoring++
Flex Memory Accessno data+
Demand Based Switching-no data
FDIno data+
Fast Memory Accessno data+
FSB parity-no data

Security technologies

Core 2 Quad Q9400 and Celeron G550 technologies aimed at improving security, for example, by protecting against hacks.

TXT+-
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400 and Celeron G550 are enumerated here.

VT-d+-
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Celeron G550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR3
Maximum memory sizeno data32 GB
Max memory channelsno data2
Maximum memory bandwidthno data17 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel® HD Graphics for 2nd Generation Intel® Processors
Graphics max frequencyno data1 GHz

Graphics interfaces

Available interfaces and connections of Core 2 Quad Q9400 and Celeron G550 integrated GPUs.

Number of displays supportedno data2

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Celeron G550.

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 1.34
+69.6%
Celeron G550 0.79

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 Q9400 2133
+69.4%
Celeron G550 1259

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 Q9400 334
Celeron G550 388
+16.2%

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 Q9400 923
+40.7%
Celeron G550 656

Gaming performance

Pros & cons summary


Performance score 1.34 0.79
Physical cores 4 2
Threads 4 2
Chip lithography 45 nm 32 nm
Power consumption (TDP) 95 Watt 65 Watt

Core 2 Quad Q9400 has a 69.6% higher aggregate performance score, and 100% more physical cores and 100% more threads.

Celeron G550, on the other hand, has a 40.6% more advanced lithography process, and 46.2% lower power consumption.

The Core 2 Quad Q9400 is our recommended choice as it beats the Celeron G550 in performance tests.


Should you still have questions on choice between Core 2 Quad Q9400 and Celeron G550, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q9400
Core 2 Quad Q9400
Intel Celeron G550
Celeron G550

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Community ratings

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Questions & comments

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