Intel Xeon E3-1515M v5

The Intel Xeon E3-1515M v5 is a 14nm Skylake-H part designed for mobile workstations, and its benchmark data reveals a processor that is heavily skewed toward multi-threaded throughput rather than single-core agility. With an average benchmark score of 1456, it sits at the 39th percentile of all CPUs, placing it in the lower-mid range of the modern landscape, yet its 4-core/8-thread configuration and 45W TDP class make it a specific tool for specific tasks. The data shows a clear split: this chip is a workhorse for parallel workloads, but it will not win any awards for responsiveness in lightly-threaded applications.

Single-Thread vs Multi-Thread Behavior

The most striking finding in the benchmark results is the disparity between single-core and multi-core performance in Cinebench. In Cinebench R23, the chip scores 711 points in single-core and 5036 points in multi-core, a ratio of roughly 7:1. This indicates that the multi-core score is not merely additive; the 8 threads are scaling effectively, suggesting that the Skylake architecture and the shared 8MB L3 cache are well-suited for parallel tasks. In contrast, the single-core score of 711 is modest, reflecting a base clock of 2.80 GHz and a boost clock of 3.70 GHz that, while respectable for a 45W part, does not push into high-frequency territory.

For real workloads, this means the Xeon E3-1515M v5 will excel in rendering, code compilation, and batch processing where all 8 threads can be saturated. However, in everyday tasks like web browsing, office document editing, or even older games that rely on one or two threads, the processor will feel no faster than a mid-range desktop chip from the same era. The Cinebench R15 results reinforce this: a single-core score of 71 versus a multi-core score of 507, again showing a roughly 7x scaling factor. The data suggests that users should not expect snappy single-threaded performance; the design priority was clearly multi-threaded throughput within a constrained thermal envelope.

Platform and Compatibility

The Xeon E3-1515M v5 is built for the Intel BGA 1440 socket, meaning it is soldered to the motherboard and is not user-upgradeable. This is a mobile workstation processor, and the platform is defined by its integration. It supports dual-channel DDR3 and DDR4 memory, which offers flexibility for system builders, but the memory bandwidth is capped at 34.1 GB/s, a figure that is modest by modern standards. The inclusion of ECC memory support is a key feature for workstation reliability, allowing for error correction in long-running compute tasks.

PCIe support is limited to Gen 3 with 16 CPU lanes, which is sufficient for a single discrete GPU or a couple of NVMe drives, but it does not offer the lane count of higher-end desktop platforms. The integrated graphics are Iris Pro Graphics P580, a capable iGPU for basic display output and light acceleration, but the presence of this GPU does not change the fact that this is a server/workstation part at heart. The production status is end-of-life, and the release date was January 2016, so any upgrade path is essentially non-existent; buyers are locked into the motherboard they have. The part number is SR2QT, and it is not multiplier-unlocked, so overclocking is off the table.

Benchmark Performance

Looking at the raw numbers, the Cinebench R23 multi-core score of 5036 places this chip in a specific performance tier. The nearest rival data shows that the Xeon E3-1515M v5 is essentially tied with the Intel Core i5-4590S and the Intel Core i5-7300HQ, with a deltaPct of 0% and 0.1% respectively. This means that for multi-threaded work, the Xeon offers no advantage over a mid-range desktop i5 from the Haswell era or a mobile i5 from the Kaby Lake generation. The average benchmark score of 1456 is identical to the i5-4590S, underscoring this parity.

In single-core tests, the picture is less flattering. The Cinebench R23 single-core score of 711 is not directly compared in the nearestRivals table, but the overall average score of 1456 versus the AMD Ryzen 3 PRO 2200GE’s 1461 (a deltaPct of -0.3%) shows that the Xeon is marginally behind that AMD part. The Xeon E3-1225 v5, which is the same generation and socket family, scores 1461 as well, putting the 1515M v5 at a -0.4% deficit. These deltas are within the noise of benchmark variation, but they indicate that this mobile chip does not punch above its weight class even against its own desktop sibling.

How It Compares

Intel Core i5-4590S: This is a 4-core, 4-thread desktop processor from the Haswell generation. The average scores are identical at 1456, with a deltaPct of 0%. The Xeon has the advantage of Hyper-Threading (8 threads vs 4), yet it still matches, not beats, the i5-4590S. This suggests that the Xeon’s higher thread count is offset by its lower clock speeds and mobile power limitations. In multi-threaded workloads, the Xeon’s extra threads should theoretically help, but the data shows no net gain.

Intel Core i5-7300HQ: This mobile quad-core from Kaby Lake scores 1455, a deltaPct of 0.1% behind the Xeon. The i5-7300HQ is a 45W part like the Xeon, and the near-identical scores indicate that the Xeon’s older Skylake architecture and ECC support do not translate into a performance lead. For gaming laptops, the i5-7300HQ is often the better choice due to its newer platform and similar output.

AMD Ryzen 3 PRO 2200GE: With an average score of 1461, this AMD part leads the Xeon by 0.3%. The Ryzen 3 PRO 2200GE is a 35W desktop APU with 4 cores and 4 threads, and it still edges out the Xeon. This shows that AMD’s Zen architecture was able to match or exceed Intel’s mobile Xeon with fewer threads and lower power, making the Xeon’s positioning less compelling.

Intel Xeon E3-1225 v5: The desktop version of this chip scores 1461, a -0.4% delta from the 1515M v5. The E3-1225 v5 has the same 4 cores but lacks Hyper-Threading (4 threads total). That the desktop chip without Hyper-Threading beats the mobile chip with it suggests that the 45W mobile power envelope severely limits sustained performance. The 1515M v5’s integrated Iris Pro graphics and BGA packaging are the trade-offs for lower power, but they do not improve compute performance.

Power and Thermals

The TDP of 45W places the Xeon E3-1515M v5 in the standard mobile workstation class. This is not an ultra-low-power part, but it is also not a desktop-class power hog. The 14nm process node and 2,300 million transistors on a 171 mm² die are typical for this generation. The thermal implications are that a capable air cooler or a small vapor chamber cooler in a laptop chassis is sufficient; no exotic liquid cooling is required. The 45W TDP allows for a thin-and-light workstation design, but sustained multi-threaded loads will generate significant heat, and the boost clock of 3.70 GHz is likely not sustainable under full load for long periods. The data does not provide specific thermal measurements, but the power class implies that users should expect fan noise under heavy rendering, and the chip will likely throttle to the base clock of 2.80 GHz if cooling is inadequate.

Who Should Consider It

The benchmark scores indicate that this processor is for specific professional workloads, not general-purpose use. For content creation, particularly video encoding or 3D rendering in Cinebench-like applications, the multi-core score of 5036 in R23 shows it can handle moderate parallel tasks, but it will not compete with modern 6- or 8-core chips. It is best suited for users who need ECC memory support in a mobile form factor, such as engineers running simulations or financial analysts with data integrity requirements.

For gaming, the single-core score of 711 in Cinebench R23 is a clear warning. Modern games often rely on 2-4 threads, and the modest single-thread performance will bottleneck mid-range and high-end GPUs. This is not a gaming CPU, and the integrated Iris Pro Graphics P580 is not designed for discrete-level gaming performance.

For office productivity, the 8 threads will handle spreadsheet calculations and multitasking without issue, but the low single-core score means that UI responsiveness will not feel snappy. The 39th percentile ranking among all CPUs reinforces that this is an outdated part by modern standards; it is only relevant for users who already own a device with this chip and need to understand its capabilities.

FAQ

Q: Does the Intel Xeon E3-1515M v5 support ECC memory?

A: Yes, ECC memory support is listed as a feature, making it suitable for error-sensitive workstation tasks.

Q: What is the average benchmark score of this CPU compared to its nearest rival?

A: The average benchmark score is 1456, which is identical to the Intel Core i5-4590S (deltaPct of 0%) and within 0.1% of the Intel Core i5-7300HQ.

Q: What is the TDP class and what does it imply for cooling?

A: The TDP is 45W, which implies a standard mobile workstation cooling solution is sufficient; it does not require exotic cooling.

Q: Can this processor be overclocked?

A: No, the multiplier is locked, so overclocking is not supported.

Q: What memory types are supported?

A: The chip supports both DDR3 and DDR4 memory in a dual-channel configuration, with a memory bandwidth of 34.1 GB/s.

Q: What is the single-core performance in Cinebench R23?

A: The single-core score is 711 points, which is modest and indicates limited responsiveness in lightly-threaded applications.