Intel Xeon E5-1691 v3

The Intel Xeon E5-1691 v3 is a 14-core, 28-thread Haswell-EP processor designed for server and workstation platforms, holding a 50th percentile ranking among all CPUs in the database. Its benchmark scores are normalized to zero due to a lack of direct benchmark entries, yet the architectural data reveals a chip built for sustained multi-threaded throughput rather than single-core agility. This analysis draws solely on the provided specifications to interpret its position in the market.

Benchmark Performance

The E5-1691 v3 does not have recorded benchmark scores in the FACT PACK, and its `avgBenchmarkScore` is listed as 0, with `nearestRivals` empty. Consequently, the data offers no direct percentage deltas against competing processors. What can be derived is the processor’s percentile rank: at 50, it sits exactly at the median of all CPUs tracked, indicating that half of the processors in the database outperform it and half underperform it. This is a neutral position, not a leading or trailing one, but the absence of scores means the percentile is a static label rather than a computed result from tested workloads.

Given the core and thread counts, 14 cores and 28 threads, the chip’s theoretical multi-threaded capability is substantial for its era. The base clock of 2.50 GHz and boost clock of 3.40 GHz suggest a modest frequency range, which limits raw single-core performance but allows for consistent throughput across many threads. Without rival scores, the data cannot state that the E5-1691 v3 is “30% ahead” or “20% behind” any specific processor. Instead, the benchmark section must rely on the percentile as the sole numeric comparison: a 50th percentile placement implies balanced, mid-pack performance in the aggregate database, but the lack of individual scores means this ranking is not backed by measured deltas.

The 35 MB of shared L3 cache is large for a 14-core design, which can reduce memory latency in cache-resident workloads. However, the data does not provide a benchmark score to quantify this benefit. The key takeaway is that the E5-1691 v3 is positioned as a mid-tier server chip, not a flagship, and its performance profile is inferred from core count and cache size rather than verified by test results.

Power and Thermals

The processor has a TDP of 135 watts, which classifies it as a high-power part intended for servers and workstations with robust cooling solutions. A 135-watt TDP demands a capable air cooler or a low-end liquid cooler; the data does not specify a particular cooler size, but the thermal load is significant enough that stock Intel coolers for mainstream desktop CPUs would be inadequate. The 22 nm process node and 2,600 million transistors on a 356 mm² die contribute to this power draw, with the die size being relatively large, which aids in heat spreading but does not reduce the absolute thermal output.

For server chassis, this TDP is within the range of standard dual-socket configurations, where airflow is designed for multiple high-wattage processors. The lack of an integrated GPU means all thermal dissipation is dedicated to the CPU cores and uncore, simplifying cooling design. In a workstation context, users would need to ensure their case has adequate exhaust and intake airflow. The data does not provide thermal throttling behavior or power draw under load, so the analysis is limited to the TDP figure itself: 135 watts is a clear indicator of a processor that prioritizes multi-core performance over energy efficiency, and cooling solutions must be selected accordingly.

How It Compares

The FACT PACK lists no `nearestRivals`, so there are no direct competitor names, scores, or deltaPct values to cite. This absence means the E5-1691 v3 cannot be positioned against specific alternative processors in this analysis. Without rival data, the comparison section is restricted to noting that the processor’s 50th percentile ranking places it in the middle of the database, but no individual rival can be named or quantified. The data simply does not support statements like “the E5-1691 v3 is X% faster than the Y” because no Y exists in the provided information.

In lieu of specific rivals, the analysis can note that the E5-1691 v3’s 14 cores and 28 threads place it in a category where many competitors would offer similar core counts, but without scores, any performance equivalence is speculative. The empty `nearestRivals` field is a factual limitation, and the section must reflect that by stating the absence of comparable data rather than inventing comparisons.

FAQ

Q: What is the core and thread count of the Intel Xeon E5-1691 v3?

A: The processor has 14 cores and 28 threads, as listed in the FACT PACK.

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

A: The TDP is 135 watts, which implies a capable air cooler or better for adequate thermal management in a workstation or server chassis.

Q: Does the processor support ECC memory?

A: Yes, ECC memory support is enabled, which is typical for server and workstation processors.

Q: What is the memory bus configuration?

A: The E5-1691 v3 supports DDR4 memory with a quad-channel bus, providing a memory bandwidth of 68.3 GB/s.

Q: What socket does the processor use?

A: It uses Intel Socket 2011-3, which is compatible with Haswell-EP server platforms.

Q: Is the processor overclockable?

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

Q: What is the market segment and production status?

A: It is aimed at the server/workstation segment and is end-of-life, having been released in September 2014.

Q: How many PCIe lanes does it provide?

A: It offers 40 PCIe Gen 3 lanes from the CPU only, which is a high count for multi-GPU or NVMe configurations.

Who Should Consider It

Workloads that benefit from high core counts and multi-threading are the primary fit for the E5-1691 v3. Its 14 cores and 28 threads, combined with a 35 MB L3 cache, make it suitable for rendering, scientific simulations, and virtualization where parallel processing is dominant. The quad-channel DDR4 memory with 68.3 GB/s bandwidth supports memory-intensive tasks like large database queries or data analytics, where the memory bandwidth can keep multiple cores fed. For gaming, the processor’s 2.50 GHz base and 3.40 GHz boost clocks are modest by modern standards, and the 50th percentile ranking suggests mid-level performance, so it would not be a top choice for high-refresh-rate gaming, but it can handle gaming alongside streaming or background tasks due to its thread count.

Creation workloads, such as video editing or 3D rendering, would see solid performance from the 28 threads, though the lack of benchmark scores means the data cannot quantify the exact gains. Office productivity, which is often single-threaded, would not fully utilize the core count, and the lower clock speeds would make it less responsive than higher-clocked desktop processors. The E5-1691 v3 is best suited for users who run parallel, CPU-bound workloads in a server or workstation environment, not for users seeking maximum single-core speed.

Single-Thread vs Multi-Thread Behavior

The E5-1691 v3’s base clock of 2.50 GHz and boost clock of 3.40 GHz indicate a moderate single-thread performance ceiling. A 0.9 GHz difference between base and boost is substantial, but the absolute boost frequency is not high, so single-threaded tasks like web browsing, word processing, or light scripting would not see exceptional responsiveness. In contrast, the 14 cores and 28 threads provide a strong multi-threaded foundation, with the 35 MB shared L3 cache helping to reduce cross-core communication overhead. The processor’s 50th percentile ranking reflects this balance: it is neither a single-thread leader nor a multi-thread laggard, but the data does not provide a specific split between single-core and multi-core scores.

For real workloads, this means that applications that scale well with threads, such as video encoding, 3D rendering, or compiling large codebases, will leverage the full 28 threads, while single-threaded applications will be limited by the 3.40 GHz boost. The memory bandwidth of 68.3 GB/s over quad-channel DDR4 is sufficient to feed all cores in memory-bound scenarios, but the lack of benchmark results prevents a quantitative assessment of how the multi-thread performance compares to rivals. The data suggests a processor that excels in throughput rather than latency-sensitive tasks, making it a better fit for batch processing than interactive responsiveness.

Platform and Compatibility

The E5-1691 v3 uses Intel Socket 2011-3, which is the platform for Haswell-EP processors. It supports DDR4 memory with a quad-channel bus, providing a theoretical memory bandwidth of 68.3 GB/s, and ECC memory is enabled, making it suitable for error-sensitive server workloads. The processor offers 40 PCIe Gen 3 lanes from the CPU, which is a high count for connecting multiple GPUs, NVMe SSDs, or high-speed network cards. The memory support is limited to DDR4, and the architecture is Haswell-EP, fabricated on a 22 nm process with 2,600 million transistors on a 356 mm² die.

The production status is end-of-life, with a release date of September 2014, meaning the platform is legacy. Upgrade paths would involve moving to newer sockets and architectures, which the data does not specify. The 40 PCIe lanes are a notable feature, but the lack of integrated graphics means a discrete GPU is required for display output. The socket 2011-3 platform typically supports high-end desktop and server boards, but the data does not list chipset compatibility or additional platform details, so the analysis is limited to the specified facts: DDR4, quad-channel, ECC, and 40 PCIe Gen 3 lanes. The locked multiplier confirms that overclocking is not a consideration, and the TDP of 135 watts means the platform must provide adequate power delivery and cooling.