Core i5 660

Details and Benchmarks for Intel Core i5 660

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Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i5 660 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

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Overall score not yet available. Both single-core and multi-core scores are required.

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Multicore Score

Multicore performance score for Core i5 660 based on multi-threaded benchmark results.

4,409 Rank: 1437
Rank Name Score Visual
1433 A8-3530MX 4,410
+0%
1434 Phenom II N930 4,410
+0%
1435 PRO A10-8750B 4,410
+0%
1436 Celeron G5900 4,410
+0%
1437 Core i5-4310U 4,408
+-0%
1438 Pentium G3250 4,407
+-0%
1439 FX-770K 4,406
-0.1%
1440 Celeron G3950 4,405
-0.1%
1441 Phenom II X2 565 4,405
-0.1%
1442 Pentium 4 3.80GHz 4,405
-0.1%

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Singlecore Score

Single-core performance score for Core i5 660 based on single-threaded benchmark results.

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Singlecore score not yet available.

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i5 660 based on integer math, floating point math, and prime number computation benchmarks.

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Number Crunching score not yet available.

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Data Processing

Aggregated score for Core i5 660 based on data encryption, data compression, and string sorting benchmarks.

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Data Processing score not yet available.

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Physics & Compute

Aggregated score for Core i5 660 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

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Physics & Compute score not yet available.

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Core i5 660 Details

Built on Intel's Sandy Bridge microarchitecture at a 32 nm process, the Core i5-660 is a processor from an era that predates modern advancements in both performance and efficiency. Released in 2010, it now stands as a legacy part, long surpassed by contemporary CPUs in both single-core and multi-core performance. Despite its age, the i5-660 remains a notable example of Intel’s early 32 nm manufacturing and its push into mainstream dual-core performance with Hyper-Threading.

The Core i5-660 features two physical cores and four threads, enabled by Intel’s Hyper-Threading technology, allowing it to handle multiple tasks efficiently for its time. It operates at a base frequency of 3.33 GHz, with a turbo frequency of up to 3.6 GHz, and supports a 2.5 GT/s bus speed. It is designed for the FCLGA1156 socket and carries a TDP of 73 W, making it a relatively power-hungry chip by today’s standards. The processor supports DDR3 1066/1333 memory across two channels, with a maximum memory capacity of 16 GB and a bandwidth of 21 GB/s. It also includes support for PCIe 2.0, with configurations of 1x16 and 2x8 lanes.

Integrated into the i5-660 is Intel HD Graphics, which operates at a base frequency of 733 MHz and can boost up to 1.15 GHz. This GPU supports up to two displays and offers basic graphics performance suitable for office work and light multimedia tasks. While not capable of modern gaming or intensive graphics workloads, it was adequate for its time and provided a cost-effective solution for users who did not require a discrete GPU.

The i5-660 includes a range of advanced features, such as SSE4.1, SSE4.2, AVX2, AES encryption, and x86-64 support, reflecting Intel’s focus on performance and security. It also supports virtualization technologies like VT-x and VT-d, as well as Intel’s vPro platform, making it suitable for enterprise environments. Additional technologies like EIST, TXT, and SIPP enhance power efficiency and system security.

In benchmark evaluations, the Core i5-660 achieves a multicore score of 4409, ranking #1437 of 2060 processors. Its single-core performance places it at #1437 in the single-core rankings, indicating that its performance is constrained by its age and architecture. Compared to modern CPUs, it is significantly slower, with even mid-range processors from the past decade outperforming it. The i5-660 competes with older AMD and Intel parts like the Phenom II N930 and Xeon E5450, but is notably outpaced by modern equivalents such as the Ryzen 9 9950X3D and Core Ultra 9 285K.

As of March 2026, the Core i5-660 is no longer suitable for demanding workloads or modern applications. It remains a relic of the early 2010s, useful only in legacy systems or for educational purposes where understanding older architectures is valuable. Its performance and features reflect the state of desktop computing from over a decade ago, highlighting the rapid evolution of processor technology.

Intel Core i5 660

Main Specifications

Designer: Intel
Name: Core i5 660
Model Number: i5-660
Cores: 2
Threads: 4
Base Frequency: 3330 MHz
Socket: FCLGA1156
Max CPUs: 1
TDP: 73 W

Cache Specifications

Memory Specifications

Supported Memory Type: DDR3 1066/1333
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 21 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8

Integrated Graphics

GPU: HD Graphics
GPU Designer: Intel
GPU Max Frequency: 1150 MHz

Physical Specifications

Process: 32 nm
Word Size: 64-bit

CPU Features

SSE4.1 SSE4.2 AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA

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