Intel Core i5-2500S

The Intel Core i5-2500S sits in a peculiar historical pocket. It is a 4-core, 4-thread desktop processor from the Sandy Bridge era, built on a 32 nm process with a 65 W TDP. Its average benchmark score of 1008 places it at the 27th percentile of all CPUs, meaning the data indicates it outperforms roughly a quarter of the processors tracked. This is not a performance leader by any modern standard, but its position against specific rivals reveals a more nuanced story than raw percentile suggests.

Benchmark Performance

The i5-2500S delivers an average benchmark score of 1008, which places it in a statistical dead heat with the Intel Processor N100 (1009) and the Intel Core i7-5600U (1009). The deltaPct figures show a negligible 0.1% deficit against both, a margin well within run-to-run variation. Against the Intel Core i7-2630QM, the i5-2500S leads by a razor-thin 0.2%, while it trails the Intel Xeon W5580 by 0.4%. These are not meaningful differences in real-world terms; the four chips effectively occupy the same performance tier despite their vastly different architectures and release eras.

Looking at specific workloads, the multi-core scores tell a consistent story. In Cinebench R15 multicore, the chip scores 290 points. In Cinebench R20 multicore, it reaches 1211, and in Cinebench R23 multicore, it produces 2884. The scaling between these versions is roughly linear, indicating the processor maintains its relative standing across benchmark generations. Geekbench multicore returns 1511, a figure that aligns with the Cinebench results when accounting for different scoring scales.

The single-core results are equally consistent. Cinebench R20 single-core yields 170, Cinebench R23 single-core yields 407, and Geekbench single-core yields 582. The ratio between single-core and multi-core scores in Geekbench (582 vs 1511) reveals a 2.6x scaling factor. For a 4-core/4-thread part, this is expected; the chip cannot leverage hyper-threading, so multi-threaded gains come purely from the four physical cores.

Single-Thread vs Multi-Thread Behavior

The performance split between single-thread and multi-thread workloads is the defining characteristic of this processor. With a 2.70 GHz base clock and 3.70 GHz boost clock, the i5-2500S relies on raw frequency rather than thread count flexibility. The absence of hyper-threading means each core handles exactly one thread, which helps single-thread performance by keeping the scheduler simple, but it caps multi-threaded throughput.

In Cinebench R23, the single-core score of 407 represents 14.1% of the multi-core score of 2884. That ratio is typical for a quad-core without SMT. For comparison, a hypothetical 4-core/8-thread chip would typically show a single-core score closer to 9-10% of the multi-core total. The implication is clear: the i5-2500S behaves predictably in multi-threaded workloads, scaling almost linearly with core count, but it offers no headroom beyond its physical core count.

For real workloads, this means the chip handles lightly threaded tasks, legacy office applications, basic web browsing, older games, with acceptable responsiveness thanks to the 3.70 GHz boost. Heavily threaded tasks like video encoding or 3D rendering will see full utilization of all four cores, but the absolute performance ceiling is low by modern standards. The 6 MB shared L3 cache helps mitigate some of the latency penalties from the older architecture, but it cannot compensate for the lack of additional threads.

Power and Thermals

The i5-2500S is a 65 W TDP part, which places it in the efficiency-oriented segment of the Sandy Bridge desktop lineup. This is a low-power variant, designed for compact systems and modest cooling solutions. The 32 nm process node, manufactured by Intel, keeps the thermal density manageable. The chip's die size is 216 mm², and it contains 1,160 million transistors, figures that reflect the architectural complexity of the era.

The 65 W TDP implies that a capable air cooler is sufficient for sustained operation. The data does not specify thermal limits, but the power envelope suggests the processor will not require exotic cooling. This is a chip that can operate quietly in a small form-factor desktop, and it will not stress a typical power delivery system. The locked multiplier (multiplierUnlocked: false) means there is no overclocking headroom, so the thermal profile remains predictable under all conditions.

The integrated graphics solution is Intel HD 2000. This is a basic iGPU, suitable for display output and light media playback, but it is not designed for gaming or graphics-accelerated workloads. For users pairing this chip with a discrete GPU, the iGPU is irrelevant; for those relying on integrated graphics, expectations must be minimal.

How It Compares

vs Intel Processor N100: The i5-2500S trails the N100 by 0.1% in average score (1008 vs 1009). This is a remarkable result given the N100 is a much newer, more efficient design. The N100 achieves parity with significantly lower power consumption, making the i5-2500S obsolete for new builds. The data shows no performance advantage for the older chip.

vs Intel Core i7-5600U: The i5-2500S matches the i7-5600U, also within 0.1%. The i7-5600U is a dual-core with hyper-threading, so it reaches the same average score with fewer physical cores. This indicates the i5-2500S's higher core count compensates for its older architecture, but only just. For battery-powered laptops, the i7-5600U is clearly the better choice; for desktops, the two are functionally equivalent.

vs Intel Core i7-2630QM: The i5-2500S edges out the i7-2630QM by 0.2% (1008 vs 1006). The i7-2630QM is a quad-core with hyper-threading, so it has eight threads versus the i5-2500S's four. Despite this thread disadvantage, the i5-2500S scores slightly higher, likely due to its higher boost clock (3.70 GHz vs the i7-2630QM's lower turbo). This is a narrow win, but it demonstrates that raw clock speed can offset thread count in this performance bracket.

vs Intel Xeon W5580: The i5-2500S trails the Xeon W5580 by 0.4% (1008 vs 1012). The W5580 is a server-oriented part with a different feature set, but the benchmark scores place them in the same class. The 0.4% gap is insignificant, and the i5-2500S offers a more modern platform with PCIe Gen 3 support, which the older Xeon lacks.

Platform and Compatibility

The i5-2500S uses the Intel Socket 1155 interface, which is exclusive to the Sandy Bridge and Ivy Bridge desktop generations. The chip is part of the Core i5 (Sandy Bridge) generation, released on 2011-01-08. It supports dual-channel DDR3 memory, with no ECC capability (eccMemory: false). The memory bus is dual-channel, which was standard for the era; the data does not specify a peak bandwidth figure.

For PCIe, the processor provides Gen 3 with 16 lanes, allocated to the CPU only. This means a single discrete GPU can run at full x16 bandwidth, but there are no additional lanes for multiple GPUs or high-speed NVMe drives without a chipset that provides them. The platform predates modern NVMe standards, so users are limited to SATA-based storage unless they use an add-in card that negotiates through the chipset.

Upgrade path is a critical limitation. Socket 1155 supports only Sandy Bridge and Ivy Bridge processors, and the i5-2500S is already near the top of the stack for its generation. Users cannot move to a newer architecture without changing the motherboard and memory. The production status is end-of-life, and the part number is SR009. There is no launch MSRP data available, so pricing cannot be discussed.

FAQ

Q: Does the Intel Core i5-2500S support hyper-threading?

A: No. It has 4 cores and 4 threads, meaning each core handles exactly one thread. This limits multi-threaded performance compared to chips with hyper-threading, such as the Intel Core i7-2630QM, which has 4 cores and 8 threads.

Q: What is the boost clock speed of the i5-2500S?

A: The boost clock is 3.70 GHz, up from a base clock of 2.70 GHz. This boost is available for single-thread and lightly threaded workloads.

Q: Can this processor be overclocked?

A: No. The multiplier is locked (multiplierUnlocked: false), so the clock speeds cannot be adjusted beyond the factory settings. The thermal design is fixed at 65 W TDP.

Q: What memory type does the i5-2500S use?

A: It uses DDR3 memory in a dual-channel configuration. ECC memory is not supported.

Q: Does the i5-2500S have integrated graphics?

A: Yes, it includes Intel HD 2000. This is a basic integrated GPU suitable for display output, but not for gaming or graphics-accelerated applications.

Q: How does the i5-2500S compare to the Intel Processor N100?

A: The i5-2500S scores 1008, which is 0.1% lower than the N100's 1009. The two are effectively tied in average benchmark score, despite the N100 being a much more recent and power-efficient design.

Who Should Consider It

The i5-2500S is not a chip for modern high-performance workloads. Its 27th percentile ranking and end-of-life status make it a poor choice for new builds. However, the benchmark data shows it remains viable for specific legacy scenarios.

For gaming, the i5-2500S can handle older titles and less demanding esports games, particularly when paired with a discrete GPU. The 3.70 GHz boost clock provides adequate single-thread performance for games that rely on one or two cores. The lack of hyper-threading will cause stuttering in newer games that expect at least 6 threads, but the chip's Cinebench R23 multicore score of 2884 indicates it can manage light multitasking alongside gaming.

For content creation, this processor is not recommended. The multi-core scores (1211 in R20, 2884 in R23) are far below what modern creators need for video editing or 3D rendering. A user working with 1080p video on legacy software might cope, but any serious rendering workload will expose the chip's age.

For office and general productivity, the i5-2500S is still functional. Word processing, spreadsheets, web browsing, and email all run comfortably within the single-thread capabilities. The 65 W TDP makes it suitable for quiet, low-power desktops where performance demands are modest. The dual-channel DDR3 support is adequate for these tasks, and the 6 MB L3 cache reduces memory latency.

The data suggests this chip is best suited for users who already own a Socket 1155 motherboard and need a low-power replacement for a failed processor, or for hobbyists building retro systems. For anyone else, the nearest rivals, particularly the Intel Processor N100, offer the same performance in a modern, more efficient package. The i5-2500S is a historical footnote, not a practical recommendation.