Intel Core i7-640M
Intel processor specifications and benchmark scores
Integrated GPUAt a Glance
IntelIntel Core i7-640M Specifications
Core i7-640M Core Configuration
Processing cores and threading
The Intel Core i7-640M features 2 physical cores and 4 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.
i7-640M Clock Speeds
Base and boost frequencies
Clock speed is a critical factor in Core i7-640M benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Core i7-640M by Intel can dynamically adjust its frequency based on workload and thermal headroom.
Intel's Core i7-640M Cache Hierarchy
L1, L2, L3 cache sizes
Cache memory is ultra-fast storage built directly into the i7-640M processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Core i7-640M's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.
Westmere Architecture & Process
Manufacturing and design details
The Intel Core i7-640M is built on Intel's 32 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in i7-640M incorporate advanced branch prediction and out-of-order execution for optimal performance.
Westmere Instruction Set Features
Supported CPU instructions and extensions
The Core i7-640M by Intel supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.
i7-640M Power & Thermal
TDP and power specifications
The Intel Core i7-640M has a TDP (Thermal Design Power) of 35W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.
Intel Socket G1 Platform & Socket
Compatibility information
The Core i7-640M uses the Intel Socket G1 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.
Intel Socket G1 Memory Support
RAM compatibility and speeds
Memory support specifications for the i7-640M define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Core i7-640M determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.
Intel's Core i7-640M Integrated Graphics
Built-in GPU specifications
The Intel Core i7-640M includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the i7-640M provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.
Core i7-640M Product Information
Release and pricing details
The Intel Core i7-640M is manufactured by Intel and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Core i7-640M by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.
Core i7-640M Benchmark Scores
cinebench_cinebench_r15_multicoreSource
Cinebench R15 multi-core renders a complex 3D scene using all CPU threads simultaneously. This test reveals how Intel Core i7-640M performs in parallel rendering workloads like video production and 3D animation. The R15 version remains useful for comparing against older hardware benchmarks. Higher scores directly correlate with faster render times in Cinema 4D and similar 3D applications.
Top 5 Performers
Top 5 PerformersNearby Performers
Nearby Performerscinebench_cinebench_r20_multicoreSource
Cinebench R20 multi-core uses a scene requiring 4x more computational power than R15. This test better reflects modern CPU capabilities for professional rendering on Intel Core i7-640M. The more demanding workload provides better differentiation between current-generation processors.
Top 5 Performers
Nearby Performers
cinebench_cinebench_r20_singlecoreSource
Cinebench R20 single-core tests one thread against a more demanding scene than R15. This reveals the true single-thread rendering capability of Intel Core i7-640M. The increased complexity provides more accurate performance differentiation between modern CPUs.
Top 5 Performers
Nearby Performers
cinebench_cinebench_r23_multicoreSource
Cinebench R23 multi-core is the current standard for CPU rendering benchmarks with a 10-minute minimum runtime. This extended test reveals sustained performance of Intel Core i7-640M after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss.
Top 5 Performers
Nearby Performers
cinebench_cinebench_r23_singlecoreSource
Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how Intel Core i7-640M maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance.
Top 5 Performers
Nearby Performers
geekbench_multicoreSource
Geekbench multi-core tests Intel Core i7-640M across real-world workloads including image processing, machine learning, and data compression. All available threads are utilized to measure parallel performance. Higher scores indicate better capability in multitasking and content creation.
Top 5 Performers
Nearby Performers
geekbench_singlecoreSource
Geekbench single-core measures how fast one thread of Intel Core i7-640M can process tasks like web browsing and document editing. This score correlates with how snappy the system feels during normal use. Many applications still depend primarily on single-thread performance.
Top 5 Performers
Nearby Performers
About Intel Core i7-640M
The Intel Core i7-640M is a mobile dual-core processor from the Westmere (Arrandale) family, released on 2010-09-25 with a launch MSRP of $346. It operates at a base clock of 2.80 GHz and a boost clock of 3.47 GHz, with 2 cores and 4 threads. Built on Intel's 32 nm process, the chip contains 382 million transistors on an 81 mm² die. Its cache hierarchy includes 64 KB L1 per core, 256 KB L2 per core, and 4 MB of shared L3. Memory support is dual-channel DDR3 with a bandwidth of 17.1 GB/s. The processor is now end-of-life and occupies the 14th percentile among all CPUs in the database, with an average benchmark score of 614. Benchmark results show a Cinebench R15 multi-core score of 178, R20 multi-core of 743, R20 single-core of 105, R23 multi-core of 1771, R23 single-core of 250, Geekbench multi-core of 818, and Geekbench single-core of 432.
Who Should Consider It
The i7-640M is a legacy mobile processor whose performance profile suits only the lightest of computing tasks. Its single-core scores — 105 in Cinebench R20, 250 in R23, and 432 in Geekbench — are far below what modern software expects. For office work such as word processing, spreadsheet manipulation, and web browsing, the processor can handle these activities without severe strain, provided the operating system and applications are not too resource-hungry. The multi-core results, while higher in absolute terms (743 in R20, 1771 in R23, 818 in Geekbench), still place it near the bottom of current CPU rankings. Thus, any workload that involves video encoding, 3D rendering, or heavy multitasking will likely produce sluggish performance.
Given its integrated graphics capability — available on certain motherboards as a chipset feature — the i7-640M can drive basic display output for everyday use. However, it is not suited for gaming, as even low-end modern titles require far more graphics and CPU horsepower than this chip can deliver. Similarly, creative professionals working with photo editing, audio production, or software compilation would find the processor inadequate. The only realistic scenario for considering this CPU is if you are maintaining an old laptop for basic tasks or require a replacement part for a system that already uses this socket. In that context, the i7-640M provides functional, if dated, performance.
How It Compares
The i7-640M sits in a tight performance cluster with four rival processors, all within 0.5% of its average score of 614. Against the AMD Phenom II X4 820, which scores 612, the i7-640M is 0.3% faster. This difference is negligible in real-world use, meaning the two chips are effectively interchangeable for most tasks. The Phenom II X4 820 is a desktop part, but the benchmark average suggests that the mobile i7-640M holds its own against that older quad-core.
The Intel Core i5-2435M, with an average score of 616, is 0.3% faster than the i7-640M. This is a second-generation mobile chip, and the margin is so small that it would not be noticeable outside synthetic benchmarks. The i7-640M's higher boost clock (3.47 GHz) likely helps it stay close to the newer i5.
The Intel Core i7-840QM, also scoring 616, is 0.4% ahead of the i7-640M. The 840QM is a quad-core mobile part, yet its average score is only marginally higher. This indicates that the i7-640M's dual-core design with four threads competes well against a true quad-core in the same generation, at least in the aggregated benchmark average.
Finally, the Intel Core i3-3220T, a desktop low-power chip, scores 611, putting it 0.5% behind the i7-640M. The i7-640M thus leads this rival by a slim margin. Overall, the i7-640M's position is firmly in the middle of this group, with no clear advantage or disadvantage beyond statistical noise. The data shows that these five processors are essentially peers, and the i7-640M's performance is neither a standout nor a laggard within its immediate competitive set.
Power and Thermals
The i7-640M has a thermal design power (TDP) of 35 watts. This is a moderate figure for a mobile processor, typical of the thin-and-light laptop segment of its era. A 35 W TDP implies that a basic cooling solution — a small heat sink with a low-profile fan — is sufficient to manage thermals under sustained load. The 32 nm manufacturing process helps keep power consumption in check, and the 81 mm² die size is compact, contributing to lower thermal density.
Because the multiplier is locked, users cannot overclock the processor to increase performance, which also keeps thermal requirements predictable. The integrated graphics, when enabled on compatible motherboards, add a small amount of heat but remain within the same cooling envelope. For a system builder or repair technician, a standard mobile cooler designed for 35 W-class CPUs will suffice. There is no need for exotic liquid cooling or oversized heatsinks. The processor's end-of-life status means that replacement cooling parts may be scarce, but the thermal characteristics are unremarkable and easily managed.
FAQ
Q: What socket does the Intel Core i7-640M use?
A: The processor uses the Intel Socket G1.
Q: Does the i7-640M support ECC memory?
A: No, ECC memory is not supported.
Q: What memory type and configuration does it support?
A: It supports dual-channel DDR3 memory with a bandwidth of 17.1 GB/s.
Q: Is the multiplier unlocked for overclocking?
A: No, the multiplier is locked.
Q: When was the i7-640M released?
A: It was released on 2010-09-25.
Q: What is the production status of this processor?
A: The production status is end-of-life.
Platform and Compatibility
The i7-640M is designed for the Intel Socket G1, a mobile platform that was common in laptops from around 2010. The memory controller supports dual-channel DDR3, which was the standard for that period. The processor also provides PCIe Gen 2 connectivity, allowing for discrete graphics and other expansion cards in systems that support them. Integrated graphics are available on certain motherboards as a chipset feature, meaning the processor itself does not include a GPU but can work with a chipset that provides one.
Because the socket is G1 and the processor is end-of-life, the upgrade path is essentially closed. There are no newer processors that use this socket, and any replacement would require a motherboard and memory change. The platform is further limited by its support for DDR3 memory, which has been superseded by DDR4 and DDR5. For someone maintaining an existing laptop, the i7-640M is a drop-in replacement for a faulty CPU, but it offers no headroom for future upgrades. The PCIe Gen 2 interface is also outdated, though it remains functional for older peripherals.
Single-Thread vs Multi-Thread Behavior
The benchmark data reveals an interesting split between single-thread and multi-thread performance. In Cinebench R20, the multi-core score of 743 is roughly seven times the single-core score of 105. That ratio is unusually high, suggesting that the processor's four threads (from two physical cores) scale very effectively in this workload. However, the absolute single-core score is extremely low, indicating that the chip's per-core performance is weak by modern standards. In contrast, Geekbench shows a multi-core score of 818 versus a single-core score of 432, a ratio of about 1.9. This lower ratio implies that the Geekbench multi-threaded test does not benefit as much from the additional threads, possibly due to memory bandwidth limitations or the nature of the workload.
The practical implication is that the i7-640M can show respectable scaling in heavily threaded tasks, but its single-thread performance is the bottleneck for most everyday applications. Office software, web browsers, and many legacy applications are primarily single-threaded, so they will run at the pace set by the 105–250 single-core scores. Multi-threaded tasks like video transcoding or batch image processing will use all four threads, but the low per-thread speed still caps overall throughput. The data suggests that the processor's architecture favors parallelism over raw single-core speed, yet the absolute performance level is too low to satisfy demanding modern software. For a system that is already constrained to basic use, the thread behavior does not change the fundamental limitation: the i7-640M is a product of its time and best suited to lightweight, legacy workloads.
The AMD Equivalent of Core i7-640M
Looking for a similar processor from AMD? The AMD Ryzen 7 1700 offers comparable performance and features in the AMD lineup.
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