Pentium 987 vs Core 2 Duo P8400

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Aggregate performance score

Core 2 Duo P8400
2008
2 cores / 2 threads, 25 Watt
0.53
+29.3%
Pentium 987
2013
2 cores / 2 threads, 17 Watt
0.41

Core 2 Duo P8400 outperforms Pentium 987 by a significant 29% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo P8400 and Pentium 987 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking28602994
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core 2 DuoIntel Pentium
Power efficiency2.012.28
Architecture codenamePenryn (2008−2011)Sandy Bridge (2011−2013)
Release date15 July 2008 (16 years ago)1 February 2013 (11 years ago)
Launch price (MSRP)$209$134

Detailed specifications

Core 2 Duo P8400 and Pentium 987 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 speed2.26 GHz1.5 GHz
Boost clock speed2.26 GHz1.5 GHz
Bus typeno dataDMI 2.0
Bus rate1066 MHz4 × 5 GT/s
Multiplierno data15
L1 cache128 KB128 KB
L2 cache3 MB512 KB
L3 cache3 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-1.15Vno data

Compatibility

Information on Core 2 Duo P8400 and Pentium 987 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,PBGA479,PGA478FCBGA1023
Power consumption (TDP)25 Watt17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo P8400 and Pentium 987. 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 P8400 and Pentium 987 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 P8400 and Pentium 987 are enumerated here.

VT-dno data-
VT-x+-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo P8400 and Pentium 987. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR3
Maximum memory sizeno data16.38 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 GHz

Graphics interfaces

Available interfaces and connections of Core 2 Duo P8400 and Pentium 987 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 P8400 and Pentium 987.

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 P8400 0.53
+29.3%
Pentium 987 0.41

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 P8400 849
+29.2%
Pentium 987 657

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 P8400 279
+22.4%
Pentium 987 228

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 P8400 459
+17.1%
Pentium 987 392

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Core 2 Duo P8400 2036
+36.9%
Pentium 987 1487

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Core 2 Duo P8400 34.2
+40.4%
Pentium 987 48

Gaming performance

Pros & cons summary


Performance score 0.53 0.41
Recency 15 July 2008 1 February 2013
Chip lithography 45 nm 32 nm
Power consumption (TDP) 25 Watt 17 Watt

Core 2 Duo P8400 has a 29.3% higher aggregate performance score.

Pentium 987, on the other hand, has an age advantage of 4 years, a 40.6% more advanced lithography process, and 47.1% lower power consumption.

The Core 2 Duo P8400 is our recommended choice as it beats the Pentium 987 in performance tests.


Should you still have questions on choice between Core 2 Duo P8400 and Pentium 987, ask them in Comments section, and we shall answer.

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Intel Core 2 Duo P8400
Core 2 Duo P8400
Intel Pentium 987
Pentium 987

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Community ratings

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


3.7 84 votes

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Questions & comments

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