Celeron G3900T vs Core 2 Quad Q8400

VS

Aggregate performance score

Core 2 Quad Q8400
2009
4 cores / 4 threads, 95 Watt
1.30
+2.4%
Celeron G3900T
2015
2 cores / 2 threads, 35 Watt
1.27

Core 2 Quad Q8400 outperforms Celeron G3900T by a minimal 2% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Quad Q8400 and Celeron G3900T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking22812297
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataIntel Celeron
Power efficiency1.303.43
Architecture codenameYorkfield (2007−2009)Skylake (2015−2016)
Release date19 April 2009 (15 years ago)19 October 2015 (9 years ago)

Detailed specifications

Core 2 Quad Q8400 and Celeron G3900T 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 speed0.67 GHz2.6 GHz
Bus typeno dataDMI 3.0
Bus rate1333 MHz4 × 8 GT/s
Multiplierno data26
L1 cache64 KB (per core)128 KB
L2 cache4 MB (shared)512 KB
L3 cache0 KB2 MB
Chip lithography45 nm14 nm
Die size2x 82 mm298.57 mm2
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 millionno data
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Celeron G3900T 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 (Uniprocessor)
SocketFCLGA775,LGA775FCLGA1151
Power consumption (TDP)95 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Celeron G3900T. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Quad Q8400 and Celeron G3900T technologies aimed at improving security, for example, by protecting against hacks.

TXT--
EDB++
Secure Keyno data+
SGXno dataYes with Intel® ME
OS Guardno data-

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Celeron G3900T are enumerated here.

VT-dno data+
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Celeron G3900T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR4-1866/2133, DDR3L-1333/1600
Maximum memory sizeno data64 GB
Max memory channelsno data2
Maximum memory bandwidthno data34.134 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)Intel HD Graphics 510
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data950 MHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core 2 Quad Q8400 and Celeron G3900T integrated GPUs.

Number of displays supportedno data3
eDPno data+
DisplayPort-+
HDMI-+
DVIno data+

Graphics image quality

Maximum display resolutions supported by Core 2 Quad Q8400 and Celeron G3900T integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2304@24Hz
Max resolution over eDPno data4096x2304@60Hz
Max resolution over DisplayPortno data4096x2304@60Hz
Max resolution over VGAno dataN/A

Graphics API support

APIs supported by Core 2 Quad Q8400 and Celeron G3900T integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.4

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Celeron G3900T.

PCIe version2.03.0
PCI Express lanesno data16

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
+2.4%
Celeron G3900T 1.27

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
+2.4%
Celeron G3900T 2020

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
Celeron G3900T 554
+68.9%

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
Celeron G3900T 986
+9.8%

Gaming performance

Pros & cons summary


Performance score 1.30 1.27
Recency 19 April 2009 19 October 2015
Physical cores 4 2
Threads 4 2
Chip lithography 45 nm 14 nm
Power consumption (TDP) 95 Watt 35 Watt

Core 2 Quad Q8400 has a 2.4% higher aggregate performance score, and 100% more physical cores and 100% more threads.

Celeron G3900T, on the other hand, has an age advantage of 6 years, a 221.4% more advanced lithography process, and 171.4% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Core 2 Quad Q8400 and Celeron G3900T.

Note that Core 2 Quad Q8400 is a desktop processor while Celeron G3900T is a notebook one.


Should you still have questions on choice between Core 2 Quad Q8400 and Celeron G3900T, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q8400
Core 2 Quad Q8400
Intel Celeron G3900T
Celeron G3900T

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Community ratings

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