Intel Core i5-2405S

The Intel Core i5-2405S is a desktop processor from Intel's Sandy Bridge generation, produced on a 32 nm process at Intel with 1,160 million transistors on a 216 mm² die. It has four cores and four threads, a 2.50 GHz base clock, a 3.30 GHz boost clock, and a 65 W TDP. Integrated graphics are Intel HD 3000, and the CPU averages 954 in the benchmark database, placing it in the 25th percentile of all CPUs. The nearest rivals are all extremely close, with average scores from 952 to 955 and deltaPct values of -0.1% and +0.2%.

How It Compares

Intel Core i3-10110Y: The i3-10110Y posts an average score of 955, one point above the i5-2405S's 954, corresponding to a deltaPct of -0.1%. The two are effectively tied in the database's aggregate metric.

Intel Pentium Silver J5040: The Pentium Silver J5040 also averages 955 with a deltaPct of -0.1%. This places the Pentium exactly on par with the i3-10110Y and just ahead of the i5-2405S in average aggregate score.

Intel Xeon W3570: The Xeon W3570 has the same 955 average score and the same -0.1% deltaPct. Despite the workstation-class name, the data does not show any aggregate performance advantage over the i5-2405S.

Intel Core i7-5500U: The i7-5500U averages 952, giving a deltaPct of +0.2% for the i5-2405S. This rival is the only one in the nearest rivals group that trails the i5 in average score, and the margin is small.

Power and Thermals

At 65 W TDP, the i5-2405S sits in the standard desktop power envelope. A conventional air cooler is enough for this thermal class; no exotic cooling is indicated by the data. The 32 nm process and 216 mm² die are the physical design behind that rating. With four cores and four threads, the chip has four physical execution threads available, and the 65 W TDP bounds the sustained power draw. The base clock of 2.50 GHz and boost clock of 3.30 GHz operate within that envelope, and the implied cooling tier is mainstream desktop, not enthusiast or high-core-count workstation cooling.

Who Should Consider It

The i5-2405S is suited to office and general productivity work. The four cores and four threads keep everyday multitasking responsive, and the integrated HD 3000 provides display output without a separate graphics card. For creation workloads, the multi-core results are modest: Cinebench R23 multi-core 2740 and Geekbench multi-core 1425 indicate limited rendering throughput. Heavy video or 3D work would outpace this processor. For gaming, the single-core scores of 386 in Cinebench R23 and 541 in Geekbench suggest low-intensity use; the integrated HD 3000 is not a high-end gaming solution. Given the 25th percentile aggregate rank, users should match this CPU to basic productivity rather than demanding threaded applications.

FAQ

Q: What socket does the Intel Core i5-2405S use?

A: It uses Intel Socket 1155.

Q: What memory support does it have?

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

Q: Is the multiplier unlocked?

A: No. The multiplierUnlocked field is false, so multiplier-based overclocking is not available.

Q: What integrated graphics does it include?

A: Intel HD 3000.

Q: What PCIe support is provided?

A: PCIe Gen 3 with 16 lanes from the CPU only.

Q: Is the processor still in production?

A: No. Production status is end-of-life, with a release date of 2011-05-21.

Benchmark Performance

The benchmark data shows a full Cinebench and Geekbench profile. In Cinebench R15 multi-core, the i5-2405S scores 276. In Cinebench R20, it scores 1150 multi-core and 162 single-core. In Cinebench R23, it scores 2740 multi-core and 386 single-core. Geekbench results are 1425 multi-core and 541 single-core. The aggregate average benchmark score is 954, and the CPU is in the 25th percentile of all CPUs.

The nearestRivals data puts these scores in context. The Intel Core i3-10110Y, Intel Pentium Silver J5040, and Intel Xeon W3570 all average 955. Against those three, the i5-2405S's deltaPct is -0.1%, meaning the slight aggregate edge goes to the rivals. The Intel Core i7-5500U averages 952, and the i5-2405S's deltaPct is +0.2%, meaning the slight edge goes to the i5. The entire group is separated by only 3 points between the highest average (955) and the lowest (952). In practical terms, the deltaPct values are too small to give any of these chips a meaningful aggregate superiority over the i5-2405S.

Platform and Compatibility

The i5-2405S is built for Intel Socket 1155 and belongs to the Sandy Bridge architecture. The cache layout is 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. The L3 is shared, unlike the per-core L1 and L2 caches. Memory support is DDR3 over a dual-channel bus, and ECC memory support is false. The CPU provides PCIe Gen 3 with 16 lanes from the CPU only. Integrated graphics are Intel HD 3000, and the part number is SR0BB. This is a desktop-market part, and production status is end-of-life; the release date is 2011-05-21. On the manufacturing side, the processor uses a 32 nm process at Intel, with 1,160 million transistors and a 216 mm² die. With end-of-life status and no additional platform data in the fact pack, the upgrade path is limited to compatible Socket 1155 processors, none of which are enumerated in this data.

Single-Thread vs Multi-Thread Behavior

The i5-2405S has four cores and four threads, meaning there are no extra logical threads from simultaneous multi-threading. Single-thread performance appears in Cinebench R20 at 162, Cinebench R23 at 386, and Geekbench at 541. Multi-thread performance appears in Cinebench R15 at 276, Cinebench R20 at 1150, Cinebench R23 at 2740, and Geekbench at 1425. The multi-thread results are consistently higher than the single-thread results, but the scaling pattern is not uniform across benchmark generations. In a four-core, four-thread design, the practical meaning is that threaded workloads can engage all physical cores, while single-threaded workloads are capped by the per-core scores. Because thread count equals core count, running more than four threads requires time-slicing rather than additional hardware threads. The aggregate 25th percentile rank and 954 average score indicate that the processor remains below the majority of the database in both single-thread and multi-thread metrics.