Intel Core i5-2435M

The Intel Core i5-2435M is a mobile processor from the Sandy Bridge generation, built on a 32 nm process with 624 million transistors on a 149 mm² die. It presents a dual-core, four-thread configuration with a 2.40 GHz base clock and a 35 W TDP, placing it firmly in the mainstream laptop segment of its era. The data positions this chip at the 14th percentile among all CPUs, indicating that its performance profile is modest by modern standards, yet its benchmark scores reveal a specific character worth examining.

Benchmark Performance

The benchmark results for the Core i5-2435M show a consistent, if unspectacular, level of throughput. In Cinebench R23, the processor achieves a multicore score of 1726 and a single-core score of 243. The multicore figure suggests that the dual-core design with Hyper-Threading can handle basic parallel workloads, but the single-core score of 243 is the more telling metric, as it reflects the processor's per-thread capability. This split is typical of a Sandy Bridge mobile part where the architecture's efficiency is constrained by both the 2.40 GHz clock ceiling and the thermal envelope.

Looking at the Cinebench R20 results, the multicore score of 724 and single-core score of 102 reinforce this pattern. The multicore-to-single-core ratio here is approximately 7:1, which is a significant gap and indicates that the processor scales reasonably well when additional threads are utilized, but each individual core is limited in its raw speed. The Geekbench results tell a similar story, with a multicore score of 890 and a single-core score of 455, giving a ratio of roughly 2:1. This discrepancy between the Cinebench and Geekbench ratios is interesting, as it suggests that the workload characteristics matter greatly—Cinebench's rendering tasks benefit more from the extra threads, while Geekbench's mixed workload is more dependent on single-thread performance.

When compared to its nearest rivals, the Core i5-2435M sits in a crowded field. Its average benchmark score of 616 is essentially identical to the Intel Core i7-840QM, which scores 616, resulting in a deltaPct of -0.1%. This is a statistical tie, meaning that despite the i7-840QM having four physical cores, the i5-2435M's newer architecture and higher clock speed per core offset the core count disadvantage. Against the Intel Core i7-640M, the i5-2435M holds a slim 0.3% lead, with scores of 616 versus 614. The AMD Phenom II X4 910e scores 619, which is 0.4% higher than the i5-2435M, while the AMD Phenom II X4 820 scores 612, a 0.6% deficit. These deltas are all within a very narrow band, suggesting that the i5-2435M is competitively positioned within its generation, but not a standout performer.

Who Should Consider It

The benchmark data suggests that the Core i5-2435M is best suited for users whose primary workloads are not heavily threaded or graphically intensive. For office productivity—word processing, spreadsheets, email, and web browsing—the single-core score of 455 in Geekbench is sufficient for smooth operation of these applications. The processor's ability to handle these tasks is grounded in its 2.40 GHz base clock and the presence of integrated Intel HD 3000 graphics, which can drive basic displays without a discrete GPU.

For content creation, the picture is more nuanced. The Cinebench R23 multicore score of 1726 indicates that light photo editing or batch processing tasks can be handled, but the processor will struggle with video editing or 3D rendering workloads that demand sustained multi-threaded performance. The dual-core design limits the processor to handling only two threads simultaneously, and while Hyper-Threading provides four logical threads, the physical core count is a bottleneck. Gamers should be cautious; the integrated Intel HD 3000 graphics are not designed for modern gaming, and the single-core performance, while adequate for older titles, will not support demanding games released after the processor's era.

The data indicates that the i5-2435M is a capable processor for everyday tasks and light productivity, but it is not a recommendation for heavy multitasking or professional-grade creation work. Its position at the 14th percentile of all CPUs further underscores that it is a low-to-mid-range part, suitable for basic use cases where the priority is battery life and adequate performance rather than raw speed.

Power and Thermals

The Core i5-2435M carries a TDP of 35 W, which is a standard figure for mobile processors of its generation. This TDP class implies that the processor requires a cooling solution designed for thin-and-light laptops, typically involving a small heat pipe and a low-profile fan. The 35 W envelope is modest enough to allow for fanless or semi-passive operation in some chassis, but in practice, the integrated Intel HD 3000 graphics and the CPU will generate enough heat to require active cooling under sustained load.

For a laptop manufacturer, a 35 W TDP means that the thermal solution does not need to be elaborate. A capable air cooler, such as a single heat pipe with a 40 mm fan, would suffice to keep the processor within its thermal limits. The 32 nm process node helps in this regard, as it reduces power leakage compared to older 45 nm parts, but the processor's 2.40 GHz base clock is not particularly aggressive, which keeps peak temperatures manageable. Users upgrading from a higher-TDP desktop processor will find the 35 W part to be significantly easier to cool, but the trade-off is the lower performance ceiling as evidenced by the benchmark scores.

The absence of a boost clock in the data suggests that the processor operates at a fixed 2.40 GHz frequency under all conditions, which simplifies thermal management. This fixed clock means that the processor does not have thermal headroom to exploit for temporary performance gains, so the benchmark scores represent the maximum sustained performance, not a peak burst. This is a predictable and stable setup, but it also means that the processor cannot adapt to short bursts of demanding work by increasing its clock speed.

Platform and Compatibility

The Core i5-2435M uses the Intel BGA 1023 socket, which is a ball-grid array package that is soldered directly to the motherboard. This means that the processor is not user-replaceable or upgradeable, and any system built around this chip is limited to the original configuration. The socket is specific to the Sandy Bridge mobile generation, so there is no upgrade path to a newer architecture without replacing the entire motherboard.

Memory support is limited to DDR3 with a dual-channel memory bus. This is a standard configuration for the era, and the dual-channel support is important for maximizing memory bandwidth, which is critical for integrated graphics performance. The processor does not support ECC memory, which is expected for a consumer mobile part. The integrated graphics, Intel HD 3000, is integrated into the processor die and shares system memory for its framebuffer, so the dual-channel memory configuration helps to mitigate bandwidth bottlenecks.

PCIe support is not listed in the data, but based on the Sandy Bridge architecture, the processor would provide PCIe 2.0 lanes for connecting a discrete GPU or other peripherals. However, since the data does not specify the number of lanes or the revision, it is not possible to state exact figures. The production status is end-of-life, and the release date of 2011-08-31 indicates that this is a legacy platform. For users looking at this processor, the primary consideration is that the system is fully integrated, with no possibility of upgrading the CPU or memory beyond what was originally installed.

How It Compares

Against the Intel Core i7-840QM, the i5-2435M is effectively a tie, with a deltaPct of -0.1%. The i7-840QM has four physical cores, which would suggest a significant advantage in multi-threaded workloads, but the i5-2435M's newer Sandy Bridge architecture and higher per-core efficiency compensate for the core deficit. The data shows that in average benchmarks, the two processors are indistinguishable, which is a notable result given the i7-840QM's higher tier designation.

The Intel Core i7-640M is a direct rival, being a dual-core part with Hyper-Threading like the i5-2435M, but from the older Arrandale generation. The i5-2435M holds a 0.3% lead in average score, which is marginal but consistent. This suggests that the Sandy Bridge architecture provides a small IPC (instructions per clock) improvement over its predecessor, but the i5-2435M's lower base clock of 2.40 GHz versus the i7-640M's 2.80 GHz likely narrows the gap. The benchmark data does not list clocks for the rival, but the score delta implies that the architectural advantage is real but not transformative.

The AMD Phenom II X4 910e is a quad-core processor, and it manages a 0.4% higher average score than the i5-2435M. This is a close contest, and the Phenom II's four physical cores give it an edge in heavily threaded benchmarks, but the i5-2435M's superior single-thread performance likely keeps the overall average in check. The AMD Phenom II X4 820 scores 0.6% lower than the i5-2435M, meaning that the Intel part is slightly ahead in this matchup. The 820 is a lower-clocked version of the 910e, so the delta is consistent with the clock speed difference.

FAQ

Q: What is the processor's socket type?

A: The Intel Core i5-2435M uses the Intel BGA 1023 socket.

Q: Does the processor support ECC memory?

A: No, the data indicates that ECC memory is not supported.

Q: What is the integrated graphics solution?

A: The processor includes Intel HD 3000 integrated graphics.

Q: What is the release date of this processor?

A: The release date is 2011-08-31, and the production status is end-of-life.

Q: How many cores and threads does the processor have?

A: It has 2 cores and 4 threads, enabled by Hyper-Threading.

Q: What is the processor's average benchmark score relative to the Intel Core i7-840QM?

A: The average score is 616, which is 0.1% lower than the i7-840QM's 616, making them statistically equivalent.

Single-Thread vs Multi-Thread Behavior

The Core i5-2435M exhibits a pronounced difference between its single-thread and multi-thread performance, and this split has direct implications for real-world use. The Cinebench R23 single-core score of 243 is low in absolute terms, but it is the ratio to the multicore score of 1726 that is most revealing. The multicore score is approximately 7.1 times higher than the single-core score, which is a larger multiplier than the 2x physical core count would suggest. This indicates that the Hyper-Threading technology is effective in extracting additional throughput from the two physical cores, but it also means that the processor relies heavily on thread-level parallelism to achieve acceptable performance.

In Geekbench, the multicore score of 890 is only 1.96 times the single-core score of 455, which is almost exactly the 2x core multiplier. This suggests that Geekbench's workload is less scalable across threads, and the processor's performance in that benchmark is primarily limited by its single-thread capability. The contrast between Cinebench's 7:1 ratio and Geekbench's 2:1 ratio implies that the i5-2435M will excel in rendering or encoding tasks that can saturate all four threads, but will feel sluggish in applications that are dominated by a single thread, such as many legacy games or spreadsheet calculations.

The data shows that the processor's single-thread performance, with a Geekbench score of 455, is the weaker link. For a user, this means that the processor will respond quickly to simple commands and light app usage, but will show noticeable lag when a single application demands sustained CPU computation. The multi-thread performance, while stronger, is still constrained by the low base clock and the two physical cores, so the processor cannot compete with even entry-level quad-core parts from later generations. The i5-2435M is a processor that asks its software to use all available threads, and when that happens, it performs reasonably; when it does not, the limitations become apparent.