Intel Pentium 987 vs Core 2 Duo T6400

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General info

Comparing Core 2 Duo T6400 and Pentium 987 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core 2 DuoIntel Pentium
Architecture codenamePenryn (2008−2011)Sandy Bridge (2011−2013)
Release date1 January 2009 (15 years old)1 February 2013 (11 years old)
Launch price (MSRP)no data$134
Current price$33 no data

Technical specs

Core 2 Duo T6400 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 GHz1.5 GHz
Boost clock speed2 GHz1.5 GHz
Bus support800 MHzno data
L1 cacheno data64K (per core)
L2 cache2 MB256K (per core)
L3 cache2 MB L2 Cache2 MB (shared)
Chip lithography45 nm32 nm
Die sizeno data131 mm2
Maximum core temperature105 °C100 °C
Number of transistorsno data504 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo
VID voltage range1V-1.25Vno data

Compatibility

Information on Core 2 Duo T6400 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
SocketPGA478FCBGA1023
Power consumption (TDP)35 Watt17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T6400 and Pentium 987. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2
AES-NIno data-
FMAno data+
Enhanced SpeedStep (EIST)++
My WiFino data-
Turbo Boost Technology--
Hyper-Threading Technology--
Idle Statesno data+
Thermal Monitoringno data+
Flex Memory Accessno data+
Demand Based Switching--
FDIno data+
Fast Memory Accessno data+
StatusDiscontinuedDiscontinued

Security technologies

Core 2 Duo T6400 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 T6400 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 T6400 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 data21.3 GB/s
ECC memory supportno data-

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 T6400 and Pentium 987 integrated GPUs.

Number of displays supportedno data2
eDPno data+
DisplayPortno data+
HDMIno data+
SDVOno data+
CRTno data+

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo T6400 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.


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.

Benchmark coverage: 68%

Core 2 Duo T6400 724
+10.5%
Pentium 987 655

Core 2 Duo T6400 outperforms Pentium 987 by 11% in Passmark.

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.

Benchmark coverage: 42%

Core 2 Duo T6400 228
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.

Benchmark coverage: 42%

Core 2 Duo T6400 350
Pentium 987 382
+9.1%

Pentium 987 outperforms Core 2 Duo T6400 by 9% in GeekBench 5 Multi-Core.

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.

Benchmark coverage: 19%

Core 2 Duo T6400 1768
+18.9%
Pentium 987 1487

Core 2 Duo T6400 outperforms Pentium 987 by 19% in 3DMark06 CPU.

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.

Benchmark coverage: 18%

Core 2 Duo T6400 39.42
+21.8%
Pentium 987 48

Pentium 987 outperforms Core 2 Duo T6400 by 22% in wPrime 32.

Advantages and disadvantages


Recency 1 January 2009 1 February 2013
Chip lithography 45 nm 32 nm
Power consumption (TDP) 35 Watt 17 Watt

We couldn't decide between Core 2 Duo T6400 and Pentium 987. We've got no test results to judge.


Should you still have questions on choice between Core 2 Duo T6400 and Pentium 987, ask them in Comments section, and we shall answer.

User ratings

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Intel Core 2 Duo T6400
Core 2 Duo T6400
Intel Pentium 987
Pentium 987

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