Intel Core i5-3337U

The Intel Core i5-3337U is a dual-core mobile processor from the Ivy Bridge architecture, designed for thin-and-light laptops rather than high-performance desktops. With a 14th percentile ranking among all CPUs, it sits in the lower performance tier, but its data reveals a specific profile suited to particular tasks. The average benchmark score of 609 places it in direct competition with older desktop and low-power parts, making it a processor whose utility depends heavily on workload expectations and platform constraints.

Who Should Consider It

The benchmark data indicates this chip is appropriate for users whose primary tasks involve light productivity, web browsing, and document editing rather than demanding computational work. In Cinebench R23 multicore, the processor scores 1779 points, which is a modest figure that suggests it can handle everyday multitasking—like running a word processor alongside a web browser with multiple tabs—without significant strain. However, the same score indicates that sustained heavy workloads, such as video rendering or complex data analysis, will likely result in long processing times. The Geekbench multicore score of 804 reinforces this picture, placing it in a range where office applications and spreadsheet work are feasible, but where performance-hungry creative software would struggle.

For gaming, the integrated Intel HD 4000 graphics, combined with the CPU's single-core score of 401 in Geekbench, suggests that only older or less demanding titles would be playable at low settings. The Cinebench R20 single-core score of 105 points further emphasizes this limitation, as modern games often rely heavily on strong single-thread performance. Users considering this processor for esports titles or indie games might find acceptable frame rates, but the data does not support expectations of smooth performance in recent AAA releases. The 22 nm process node and 17 W TDP indicate a focus on efficiency over raw speed, which aligns with its intended market segment of portable devices where battery life is prioritized.

Creation workloads, including photo editing or light video cutting, present a mixed case. The multicore scores—747 in Cinebench R20 and 179 in Cinebench R15—suggest that basic image manipulation in software like older versions of Photoshop could work, but export times and filter operations would be noticeably slower than on more capable parts. The shared 3 MB L3 cache and dual-channel memory bus help mitigate some latency, but the two physical cores with four threads can only do so much. In essence, this processor is best suited for users who need a functional machine for email, web access, and office suites, and who do not expect to push the hardware with intensive parallel workloads.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread performance is telling. In Cinebench R23, the single-core score is 251, while the multicore score is 1779, yielding a ratio of roughly 7.1x when accounting for the two cores and four threads. This indicates that the processor scales reasonably well when all threads are utilized, but the absolute single-thread number is low, meaning that tasks which cannot parallelize—such as starting applications, loading web pages, or running legacy software—will feel sluggish. The Geekbench single-core score of 401 versus the multicore score of 804 shows a similar pattern, with the multicore advantage being just over 2x, which is expected for a dual-core part with Hyper-Threading.

This behavior has practical implications. For everyday use, the single-thread performance dictates perceived responsiveness. The data shows that this processor is roughly on par with older desktop parts like the Intel Core i3-2125, which has an average score of 608, and it trails the AMD Opteron 1385 by a negligible 0.3% in average score. Users will notice that typing, scrolling, and menu interactions are generally acceptable, but that any task involving complex scripting or real-time processing, such as streaming video at high resolutions, may cause stutter. Conversely, when a workload is explicitly designed to use all four threads—like batch file conversion or applying filters to multiple images—the multicore scores become more relevant, allowing the processor to complete tasks faster than its single-thread performance might suggest.

The boost clock of 2.80 GHz over the 1800 MHz base clock provides a temporary lift during short bursts, which helps with single-thread responsiveness. However, this boost is not sustained indefinitely, particularly under load where the 17 W TDP limits thermal headroom. The data suggests that the processor is balanced toward efficiency, meaning that the transition between single-thread and multi-thread states is smooth, but the ceiling for both is low compared to modern parts. For users, this means that the processor is adequate for sequential tasks with brief peaks in activity, but it will not excel in environments where long-running, multi-threaded processes are the norm.

Power and Thermals

The 17 W TDP classifies this processor as an ultra-low-power part, a fact that directly influences cooling requirements and system design. This TDP figure is significantly lower than typical desktop processors, which often exceed 60 W, and it implies that a basic cooling solution—such as a small fan or passive heatsink in a thin chassis—is sufficient. The 22 nm process node helps reduce heat generation, and the die size of 118 mm² is compact, allowing for efficient thermal dissipation. In practice, this means that laptops using this processor can be slim and quiet, with minimal fan noise during normal operation.

The thermal implications extend to sustained performance. Because the TDP is capped at 17 W, the processor cannot maintain high clocks for extended periods without exceeding its thermal budget. The base clock of 1800 MHz is a safe operating point, while the boost clock of 2.80 GHz is a short-term measure. In benchmark results, this is reflected in scores that are consistent with a processor that throttles under prolonged load. For example, the Cinebench R23 multicore score of 1779 is achieved within a short time frame, but a longer stress test would likely yield lower results as the processor reduces clocks to stay within power limits. Users should expect that heavy workloads will not benefit from the boost clock for more than a few minutes.

Cooling tier implications are straightforward: a capable air cooler, as found in most ultrabooks and thin laptops, is more than adequate. There is no need for liquid cooling or large heatsinks. The data does not provide specific temperature figures, but the TDP and process node suggest that thermals are manageable under typical usage. For users who plan to run the processor at maximum load for hours, the performance will degrade to a level consistent with the base clock, which is a known trade-off for such low-power designs. In summary, the power and thermal profile is a key strength for mobile use, enabling long battery life and silent operation, but it comes at the cost of sustained performance ceilings.

Platform and Compatibility

The processor uses the Intel BGA 1023 socket, which is a ball-grid array design that is soldered directly to the motherboard. This means that the CPU is not upgradeable in a traditional sense; users cannot swap it out for a faster part. The platform is based on the Ivy Bridge architecture, which supports dual-channel memory, as indicated by the memory bus specification. While the fact pack does not list specific memory types or speeds, the dual-channel configuration provides adequate bandwidth for the integrated graphics and general computing tasks. The lack of ECC memory support confirms that this is aimed at consumer mobile devices rather than workstations or servers.

PCIe support is not specified in the data, which limits the ability to discuss expansion options. However, the integrated Intel HD 4000 graphics handles display output, and the processor is designed for mobile systems where dedicated GPUs are rare. The upgrade path is essentially nonexistent at the CPU level, but users can potentially upgrade other components such as storage or memory, provided the motherboard supports it. The release date of late 2012 places this processor in a specific era, meaning that modern software and operating systems may run, but hardware acceleration features present in newer CPUs are absent.

For compatibility, the 22 nm process and Intel foundry production ensure broad driver support for the integrated graphics and chipset. The market segment is mobile, so the processor is typically found in 13-14 inch laptops. The lack of a launch MSRP in the data means no pricing information is available, but the platform's age suggests it would be found in budget or refurbished systems. Users considering this processor should be aware that the BGA socket limits future upgrades, and that the platform's capabilities are tied to its 2012-era design. The dual-channel memory bus is a positive feature, as it provides better integrated graphics performance than single-channel alternatives, but the overall platform is dated by modern standards.

How It Compares

The nearest rival data places the Intel Core i5-3337U in a tight cluster of processors with average scores around 608-611. Against the Intel Core i3-2125, which has an average score of 608, the i5-3337U is 0.1% ahead, a negligible margin that puts them at virtual parity. This comparison is notable because the i3-2125 is a desktop processor, while the i5-3337U is mobile, meaning the mobile chip achieves similar performance at far lower power consumption. The deltaPct of 0.1% indicates that in average benchmark terms, there is no practical difference between the two, making the i5-3337U a strong choice for its efficiency.

Comparing to the AMD Opteron 1389, which also scores 608, the i5-3337U is 0.2% ahead. The Opteron is a server-oriented part, and the fact that this mobile i5 matches it is a testament to the architectural efficiency of Ivy Bridge. The deltaPct of 0.2% is within noise, but it still shows that the i5-3337U holds its own against a processor designed for a different segment. The AMD Opteron 1385, with an average score of 611, is 0.3% ahead of the i5-3337U, meaning the i5 is slightly behind but by a margin that is unlikely to be perceptible in real-world tasks.

Finally, the Intel Core i3-3220T, another low-power part, scores 611 and is 0.3% ahead of the i5-3337U. This is a direct comparison of two mobile-oriented processors, and the i3-3220T edges out the i5-3337U by a hair. The i3-3220T likely has a similar TDP, but the i5-3337U offers a higher boost clock, which may give it an advantage in short bursts. Overall, the data shows that the i5-3337U sits at the boundary of competitive performance for its era, with no clear winner among these rivals—differences are all under 1%, making the choice between them dependent on other factors like platform features rather than raw speed.

FAQ

Q: What is the processor's average benchmark score and how does it rank?

A: The average benchmark score is 609, and it ranks in the 14th percentile among all CPUs, indicating it is in the lower performance tier.

Q: How does the single-core performance compare to the multi-core performance?

A: In Geekbench, the single-core score is 401 and the multi-core score is 804, showing roughly a 2x advantage when using all threads. In Cinebench R23, the single-core score is 251 and the multi-core score is 1779, demonstrating better scaling under parallel workloads.

Q: What is the TDP and what cooling does it require?

A: The TDP is 17 W, which is an ultra-low-power class. This implies that a basic air cooler, such as a small fan in a thin laptop, is sufficient for thermal management.

Q: Is the processor upgradeable?

A: No, it uses the Intel BGA 1023 socket, which is a soldered ball-grid array. This means it is not designed to be removed or replaced by the user.

Q: How does it perform against the Intel Core i3-2125?

A: The i5-3337U has an average benchmark score of 609, which is 0.1% higher than the i3-2125's score of 608, putting them at near parity.

Q: What integrated graphics does it include?

A: It includes the Intel HD 4000 integrated graphics, which is suitable for basic display output and light gaming but is not designed for high-end graphics work.