Celeron B820 vs Core 2 Duo T9400

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Aggregate performance score

Core 2 Duo T9400
2008
2 cores / 2 threads, 35 Watt
0.64
+28%
Celeron B820
2012
2 cores / 2 threads, 35 Watt
0.50

Core 2 Duo T9400 outperforms Celeron B820 by a significant 28% based on our aggregate benchmark results.

Contents

Core 2 Duo T9400 Core 2 Duo T9400
Celeron B820 Celeron B820

Primary details

Comparing Core 2 Duo T9400 and Celeron B820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking27582873
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core 2 DuoIntel Celeron
Power efficiency1.731.35
Architecture codenamePenryn (2008−2011)Sandy Bridge (2011−2013)
Release date15 July 2008 (16 years ago)1 July 2012 (12 years ago)
Launch price (MSRP)$316$86

Detailed specifications

Core 2 Duo T9400 and Celeron B820 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)2 (Dual-core)
Threads22
Base clock speed2.53 GHz1.7 GHz
Boost clock speed2.53 GHz1.7 GHz
Bus typeno dataDMI 2.0
Bus rate1066 MHz4 × 5 GT/s
Multiplierno data17
L1 cache128 KB128 KB
L2 cache6 MB512 KB
L3 cache6 MB L2 Cache2 MB (shared)
Chip lithography45 nm32 nm
Die size107 mm2131 mm2
Maximum core temperature105 °C100 °C
Number of transistors410 Million504 million
64 bit support++
Windows 11 compatibility--
VID voltage range1.05V-1.162Vno data

Compatibility

Information on Core 2 Duo T9400 and Celeron B820 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 (Uniprocessor)
SocketBGA479,BGA956,PBGA479,PGA478FCPGA988,PGA988
Power consumption (TDP)35 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T9400 and Celeron B820. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Duo T9400 and Celeron B820 technologies aimed at improving security, for example, by protecting against hacks.

TXT+-
EDB++
Anti-Theftno data-

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo T9400 and Celeron B820 are enumerated here.

VT-dno data-
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T9400 and Celeron B820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR3
Maximum memory sizeno data16 GB
Max memory channelsno data2
Maximum memory bandwidthno data21.335 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 data1.05 GHz

Graphics interfaces

Available interfaces and connections of Core 2 Duo T9400 and Celeron B820 integrated GPUs.

Number of displays supportedno data2
eDPno data+
DisplayPort-+
HDMI-+
SDVOno data+
CRTno data+

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo T9400 and Celeron B820.

PCIe versionno data2.0
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 Duo T9400 0.64
+28%
Celeron B820 0.50

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 Duo T9400 1011
+26.1%
Celeron B820 802

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 Duo T9400 322
+15%
Celeron B820 280

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 Duo T9400 507
+3%
Celeron B820 492

Gaming performance

Pros & cons summary

Performance score 0.64 0.50
Recency 15 July 2008 1 July 2012
Chip lithography 45 nm 32 nm

Core 2 Duo T9400 has a 28% higher aggregate performance score.

Celeron B820, on the other hand, has an age advantage of 3 years, and a 40.6% more advanced lithography process.

The Core 2 Duo T9400 is our recommended choice as it beats the Celeron B820 in performance tests.

Should you still have questions on choice between Core 2 Duo T9400 and Celeron B820, ask them in Comments section, and we shall answer.

Vote for your favorite

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

Intel Core 2 Duo T9400
Core 2 Duo T9400
Intel Celeron B820
Celeron B820
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Community ratings

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

3.9 119 votes

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2.8 141 vote

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Questions & comments

Here you can ask a question about Core 2 Duo T9400 or Celeron B820, agree or disagree with our judgements, or report an error or mismatch.