Core i5-661 vs Core 2 Duo P8800

Aggregate performance score

Core 2 Duo P8800
2009
2 cores / 2 threads, 25 Watt
0.59
Core i5-661
2010
2 cores / 4 threads, 87 Watt
1.56
+164%

Core i5-661 outperforms Core 2 Duo P8800 by a whopping 164% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo P8800 and Core i5-661 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking27972110
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.08
Market segmentLaptopDesktop processor
SeriesIntel Core 2 Duono data
Power efficiency2.221.69
Architecture codenamePenryn (2008−2011)Clarkdale (2010−2011)
Release date1 April 2009 (15 years ago)7 January 2010 (14 years ago)
Launch price (MSRP)$241$252

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core 2 Duo P8800 and Core i5-661 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)
Threads24
Base clock speed2.66 GHz3.33 GHz
Boost clock speed2.66 GHz3.6 GHz
Bus rate1066 MHz2.5 GT/s
L1 cache128 KB64 KB (per core)
L2 cache3 MB256 KB (per core)
L3 cache3 MB L2 Cache4 MB (shared)
Chip lithography45 nm32 nm
Die size107 mm281 mm2
Maximum core temperature105 °C70 °C
Number of transistors410 Million382 million
64 bit support++
Windows 11 compatibility--
VID voltage range1V-1.25Vno data

Compatibility

Information on Core 2 Duo P8800 and Core i5-661 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
SocketBGA479,PGA478FCLGA1156
Power consumption (TDP)25 Watt87 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo P8800 and Core i5-661. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.2
AES-NI-+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology-1.0
Hyper-Threading Technology-+
Idle Statesno data+
Demand Based Switching--
PAEno data36 Bit
FDIno data+

Security technologies

Core 2 Duo P8800 and Core i5-661 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo P8800 and Core i5-661 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo P8800 and Core i5-661. 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 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel® HD Graphics for Previous Generation Intel® Processors
Clear Video HDno data+

Graphics interfaces

Available interfaces and connections of Core 2 Duo P8800 and Core i5-661 integrated GPUs.

Number of displays supportedno data2

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo P8800 and Core i5-661.

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 P8800 0.59
i5-661 1.56
+164%

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 P8800 937
i5-661 2470
+164%

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 P8800 330
i5-661 483
+46.4%

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 P8800 538
i5-661 953
+77.1%

Gaming performance

Pros & cons summary


Performance score 0.59 1.56
Recency 1 April 2009 7 January 2010
Threads 2 4
Chip lithography 45 nm 32 nm
Power consumption (TDP) 25 Watt 87 Watt

Core 2 Duo P8800 has 248% lower power consumption.

i5-661, on the other hand, has a 164.4% higher aggregate performance score, an age advantage of 9 months, 100% more threads, and a 40.6% more advanced lithography process.

The Core i5-661 is our recommended choice as it beats the Core 2 Duo P8800 in performance tests.

Be aware that Core 2 Duo P8800 is a notebook processor while Core i5-661 is a desktop one.


Should you still have questions on choice between Core 2 Duo P8800 and Core i5-661, 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 P8800
Core 2 Duo P8800
Intel Core i5-661
Core i5-661

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

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


4.2 25 votes

Rate Core 2 Duo P8800 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.6 195 votes

Rate Core i5-661 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core 2 Duo P8800 or Core i5-661, agree or disagree with our judgements, or report an error or mismatch.