Intel Core i7-5550U

Intel Core i7-5550U is a 15-watt dual-core Broadwell-U mobile processor from Intel, built on a 14 nm process with 1,900 million transistors and a 133 mm² die size. It operates at a 2.00 GHz base clock with a 3.00 GHz boost, supports dual-channel DDR3 memory with 29.9 GB/s bandwidth, and includes Intel HD 6000 integrated graphics. The chip is end-of-life, launched on February 28, 2015, with a launch MSRP of $426, and occupies the 21st percentile among all CPUs in the database.

Benchmark Performance

The average benchmark score for the Core i7-5550U is 813, placing it in a tightly contested cluster of older desktop and mobile parts. In Cinebench R23, the chip scores 2,363 points in multi-core and 333 points in single-core; in Cinebench R20, it scores 992 multi-core and 139 single-core; and in Cinebench R15, it posts 238 multi-core. These numbers reveal a processor that is fundamentally limited by its dual-core, four-thread configuration, with multi-threaded performance falling far below any modern mainstream desktop chip.

Against its nearest rivals, the deltas are razor-thin. The Intel Celeron G6900TE matches the i7-5550U exactly with an identical average score of 813 and a 0% delta. The Intel Pentium G4500 is marginally ahead at 816, a 0.3% advantage. The AMD A10-6800K and Intel Core i7-870S both score 809, putting the i7-5550U 0.5% ahead of each. These differences are statistically negligible — in real workloads, the i7-5550U and its rivals are interchangeable in raw computational output. The data shows that despite being a Core i7 part with a premium launch price, the 5550U offers no meaningful performance lead over low-end Celeron or Pentium desktop chips from similar eras.

The 21st percentile ranking underscores the processor's position in the broader market. Benchmark results indicate that the vast majority of CPUs — including virtually all modern desktop and laptop processors — outperform this chip by wide margins. The i7-5550U's scores are acceptable only for light, intermittent computing; sustained multi-core workloads will expose its limitations quickly.

Power and Thermals

The i7-5550U carries a 15-watt TDP, classifying it as an ultra-low-power mobile processor. This TDP class implies that a passive or low-profile active cooling solution — a small fan or a thin heat pipe assembly — is entirely sufficient. The chip is designed for thin-and-light laptops and 2-in-1 devices where thermal headroom is minimal and battery life takes priority over performance. The 14 nm process node helps keep power draw low, but the architecture is from the Broadwell generation, which means efficiency improvements over later Intel nodes are not present.

Given the 15 W TDP, the cooling tier required is minimal: a capable air cooler of the sort found in ultrabooks is more than adequate. The processor will not generate enough heat to require a heat spreader with a dedicated vapor chamber or dual-fan setups. However, the low TDP also means that boost clocks are likely to be short-lived under all-core loads, as the chip will quickly hit its thermal or power envelope. For a 15 W part, the 3.00 GHz boost clock is respectable, but sustained performance will settle closer to the 2.00 GHz base clock in demanding scenarios.

The 29.9 GB/s memory bandwidth is shared with the integrated graphics and CPU cores, so memory-intensive tasks may further constrain performance. Thermal management is not a challenge for this processor; instead, the design constraint is performance ceiling, not heat dissipation.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread performance is stark. In Cinebench R23, the single-core score of 333 is roughly 14% of the multi-core score of 2,363, which is expected for a 2-core/4-thread chip. The single-thread score is decent for its era — the 3.00 GHz boost clock helps — but it is far behind modern processors that routinely exceed 1,000 points in the same test. The multi-thread score of 2,363 is low because only two physical cores are available, and Hyper-Threading adds only marginal throughput.

This behavior means the i7-5550U is best suited for workloads that are lightly threaded and bursty. Office productivity, web browsing, email, and document editing will feel responsive because these tasks rely on single-thread speed and can burst to the boost clock. Conversely, video encoding, 3D rendering, software compilation, or any workload that scales across many threads will cause the processor to struggle. The 238-point Cinebench R15 multi-core score confirms this: it is roughly one-third of what a modern quad-core mobile chip would achieve.

The dual-channel memory bus and 4 MB shared L3 cache are adequate for single-threaded tasks, but the small cache and limited cores create a bottleneck for multi-threaded applications. Benchmark results indicate that the i7-5550U behaves like a premium ultra-low-power chip for its generation — it prioritizes responsiveness over throughput, which aligns with its intended market segment.

Who Should Consider It

The Core i7-5550U is not a processor for gamers, content creators, or anyone running heavy multi-threaded software. The 21st percentile ranking and low multi-core scores disqualify it for modern gaming, video editing, or 3D modeling. Even integrated-graphics gaming is limited by the Intel HD 6000 GPU, which is not designed for anything beyond casual titles.

Instead, this chip is appropriate for users whose workloads are dominated by single-threaded, low-intensity tasks. Office workers using word processors, spreadsheets, and email will find the i7-5550U adequate, provided they do not multitask heavily. Students taking notes, browsing the web, and streaming video will also be served, albeit with occasional stutters under load. The 15 W TDP makes it suitable for fanless or near-silent designs, so it fits in ultraportable laptops where battery life and quiet operation are paramount.

However, given that the chip is end-of-life and the performance is comparable to a low-end Celeron from the same era, there is no scenario where a buyer should actively seek out this processor today. It is a relic of a time when dual-core chips were acceptable for mainstream laptops; benchmark data shows that even modest modern processors will outperform it by a wide margin.

How It Compares

Intel Celeron G6900TE: This rival matches the i7-5550U exactly with an average score of 813 and a 0% delta. The two processors are performance twins in aggregate benchmarks, despite the i7-5550U carrying a Core i7 brand and a much higher launch MSRP. The Celeron achieves the same results with likely a simpler architecture and lower cost, making the i7-5550U's premium branding misleading.

Intel Pentium G4500: The G4500 scores 816, just 0.3% higher than the i7-5550U. This is a statistical tie, but the Pentium is a desktop part, meaning it likely has better sustained performance due to a higher TDP envelope. In practice, the i7-5550U's 15 W limit will cause it to throttle sooner under sustained load, so the G4500 may pull further ahead in longer multi-threaded runs despite the near-identical aggregate score.

AMD A10-6800K: The A10-6800K scores 809, putting the i7-5550U 0.5% ahead. This is a negligible difference. The A10 is a desktop APU with integrated Radeon graphics, so in gaming scenarios the A10 would likely be superior due to its stronger GPU, but in CPU-only benchmarks the two are effectively equal. The i7-5550U's advantage is within noise.

Intel Core i7-870S: This older desktop Core i7 scores 809, again 0.5% behind the i7-5550U. The i7-870S is a quad-core part from the Nehalem generation, but its lower clock speeds and older architecture bring it down to the same level as the dual-core Broadwell chip. The i7-5550U edges it out in aggregate, but the i7-870S has more physical cores, which may help in workloads that do not scale well with Hyper-Threading alone.