Intel Core i7-2635QM

The Intel Core i7-2635QM is a 2011-era mobile processor built on the Sandy Bridge architecture, featuring 4 cores and 8 threads with a base clock of 2000 MHz and a boost clock of 2900 MHz. With an average benchmark score of 994, it sits at the 26th percentile of all CPUs, meaning roughly three-quarters of processors in the database outperform it. This is an end-of-life part, and the data shows it occupies a narrow performance band where tiny percentage swings separate it from its closest competitors.

How It Compares

Against the AMD Phenom II X6 1065T, the i7-2635QM is effectively tied, with a delta of just 0.1% in favor of the Intel part. The Phenom II brings six physical cores to the table, but the i7's hyper-threading and newer architecture let it match that core-count advantage in aggregate benchmark results. In practice, this means the two chips are interchangeable for multi-threaded workloads despite their different designs.

The AMD Opteron 4226 edges out the i7-2635QM by a razor-thin 0.1% margin. This server-oriented part is a direct peer in performance, though it targets a completely different platform. The data shows that for raw compute throughput, the mobile i7 holds its own against a chip designed for rack-mounted systems, which speaks to the efficiency of the Sandy Bridge architecture.

The Intel Core i3-4150 runs 0.2% ahead of the i7-2635QM. This is a fascinating comparison because the i3 is a desktop part with only 2 cores and 4 threads, yet it still slightly outpaces the mobile quad-core i7 in average scores. The i3's higher clock speeds and newer architecture compensate for its core deficit, making the older i7's position in the hierarchy clear.

The AMD Athlon Silver 7120U also sits 0.2% ahead of the i7-2635QM. This modern low-power mobile chip, despite having fewer cores, benefits from years of architectural improvements to match the aging Sandy Bridge design. The data suggests that the i7-2635QM's raw core count is its main asset, but it cannot overcome the clock-for-clock efficiency gains of newer silicon.

Single-Thread vs Multi-Thread Behavior

The benchmark results reveal a pronounced split between single-thread and multi-thread performance. In Cinebench R23, the i7-2635QM scores 422 in single-core and 2992 in multi-core, giving a multi-to-single ratio of roughly 7.1x from just 4 cores and 8 threads. This scaling is better than the theoretical 8x limit would suggest is possible, indicating that the boost clock of 2900 MHz applies effectively across all cores under sustained load.

The Geekbench results show a similar pattern with a single-core score of 442 and a multi-core score of 1371, a ratio of about 3.1x. The discrepancy between the Cinebench and Geekbench scaling ratios highlights how different workloads respond to the processor's thread topology. Cinebench scales aggressively with the 8 threads, while Geekbench's mixed workload sees less benefit from the additional logical processors.

For real-world use, this means the i7-2635QM is a decent multi-tasker but a weak single-thread performer. Applications that rely on one or two heavily-threaded tasks—like older games or lightly-threaded productivity apps—will feel sluggish because the single-core score of 422 in Cinebench R23 places it far behind modern processors. Conversely, video encoding, 3D rendering, and other parallel workloads will extract near-maximum benefit from all 8 threads.

The 2000 MHz base clock is the culprit for weak single-thread performance; the boost to 2900 MHz helps, but the architecture's per-clock efficiency is the limiting factor. Users should expect acceptable multi-threaded throughput but should not mistake this for a snappy desktop-class experience in latency-sensitive tasks.

Power and Thermals

The i7-2635QM carries a 45 W TDP, which classifies it as a standard-performance mobile processor for its era. This power envelope is moderate for a quad-core with 8 threads, and it requires a cooling solution capable of dissipating 45 watts of heat continuously under full load. The 32 nm process node from Intel keeps power density manageable, but this is not a chip that can run passively or in ultra-thin chassis.

For cooling, a capable air cooler with a heatpipe and fan is the minimum requirement. Laptop manufacturers typically paired this chip with dual-fan designs or large vapor chambers to handle the sustained multi-core loads that the benchmark scores suggest are possible. The 45 W TDP also implies that the processor will generate noticeable heat during extended rendering sessions, and thermal throttling could occur in poorly ventilated chassis.

The integrated HD 3000 graphics add to the thermal load, though the iGPU is not a performance part by modern standards. The die size of 216 mm² and 1,160 million transistors give some indication of the chip's complexity, but the 45 W rating is the key number for thermal design. Users repurposing this chip in a mini-PC or embedded application should plan for active cooling that can move air across the heatsink fins at moderate fan speeds.

Who Should Consider It

Gamers should avoid this chip for modern titles. The single-core performance in Cinebench R23 (422) is far too low to drive contemporary game engines, and the HD 3000 integrated graphics are not suitable for any 3D gaming beyond very old or esports titles at low settings. The multi-core scores do not compensate for the weak per-thread performance that games demand.

Content creators working with heavily parallel workloads could find some use for the i7-2635QM, provided they are running software that scales to 8 threads. The Cinebench R20 multi-core score of 1256 and R23 score of 2992 show reasonable throughput for basic video transcoding or batch photo processing. However, these scores are roughly one-tenth of what modern desktop processors achieve, so patience would be required for any serious project.

Office and productivity users doing spreadsheet work, document editing, and web browsing will find the i7-2635QM adequate for basic tasks. The 4 cores and 8 threads handle light multitasking without issue, and the 45 W TDP means it can run in a standard laptop. The catch is that the single-core performance will cause noticeable lag in complex web pages or spreadsheet calculations compared to even a modest modern chip.

This processor is best suited for retro computing enthusiasts, hobbyists building period-correct systems, or as a low-cost upgrade for a legacy laptop that already has a compatible socket. The 26th percentile ranking makes it clear that this is not a primary computing solution for any demanding workload in 2024.

Benchmark Performance

The Cinebench R15 multi-core score of 301 is the oldest benchmark in the set and shows the chip's baseline performance in a legacy test. Moving to Cinebench R20, the multi-core score jumps to 1256, and the single-core score is 177. The R23 results show 2992 multi-core and 422 single-core, confirming that the processor scales well with thread count but struggles in single-threaded tests.

Geekbench results are more conservative: 1371 multi-core and 442 single-core. This benchmark places more weight on memory latency and branch prediction, areas where the Sandy Bridge architecture shows its age. The average benchmark score of 994 is the headline number, and the nearest rivals confirm the tight clustering: the Phenom II X6 1065T at 993 (0.1% slower), the Opteron 4226 at 995 (0.1% faster), and both the i3-4150 and Athlon Silver 7120U at 996 (0.2% faster).

The percentile ranking of 26 means the i7-2635QM outperforms only about a quarter of all CPUs in the database. Relative to its nearest rivals, the deltas are all under 0.2%, which is within run-to-run variance for most benchmarks. This is a chip that is firmly average for its era but has been completely overtaken by subsequent generations. The data shows no scenario where the i7-2635QM wins decisively; it merely holds its own against peers that are similarly outdated.

Platform and Compatibility

The i7-2635QM uses the Intel BGA 1224 socket, meaning it is soldered to the motherboard and not upgradeable by the end user. This is a critical limitation: once the laptop or embedded board is purchased, the CPU is fixed. The Sandy Bridge architecture and 32 nm process node are from 2011, and the part number SR030 identifies this specific stepping.

Memory support is dual-channel, though the FACT PACK does not specify the exact memory types or speeds. ECC memory is not supported, which rules out this chip for error-correcting workloads like ZFS storage servers or scientific computing that demands data integrity. The integrated Intel HD 3000 GPU provides basic display output but is not a substitute for a discrete graphics card.

There is no PCIe information in the data, so the expansion options for this platform are unclear from the available facts. The lack of a launch MSRP means no pricing information is available. The production status is end-of-life, and the release date is January 2011, making this a fifteen-year-old platform. The upgrade path is nonexistent—users are limited to the BGA 1224 socket, and no faster chips are compatible with the same motherboard. For anyone considering this processor, the platform constraints are the deciding factor: it is a closed, non-upgradeable system that offers only the performance documented in these benchmarks.