Intel Xeon MP 3.00

The Intel Xeon MP 3.00 is a single-core, single-thread server processor from Intel's NetBurst architecture, built on a 90 nm process and released on March 28, 2005. It carries a TDP of 135 W, a base clock of 3.00 GHz with no boost capability, and a three-level cache hierarchy comprising 16 KB L1, 1 MB L2, and 4 MB L3. In the benchmark database, it holds a 50th percentile ranking among all CPUs, placing it exactly at the median of tracked processors. No benchmark scores are recorded for this part, and the database lists no nearest rivals, so its performance positioning must be inferred from its architectural characteristics and the single percentile value.

How It Compares

The database contains no nearestRivals entries for the Intel Xeon MP 3.00, meaning there are no directly comparable benchmark scores from other processors to reference. This absence of rival data forces a comparison based on the processor's own specification sheet and its percentile standing. A 50th percentile rank indicates that, within the entire population of CPUs in the database, this Xeon MP sits precisely in the middle. It is neither a top-tier performer nor a bottom-tier one, which is consistent with its role as a mid-range server part from the mid-2000s.

Without rival deltas, the architectural features provide the only basis for positioning. The processor uses a single NetBurst core clocked at 3.00 GHz, a relatively high frequency for its generation, and features a 4 MB L3 cache—a substantial amount for a single-core design. The 90 nm fabrication process was typical for the era, balancing power and density. Compared to multi-core processors that would follow, this part lacks any parallel execution capability, so its comparative strength lies in single-threaded integer and floating-point workloads that do not scale across cores. The lack of a boost clock means the frequency is fixed, which simplifies thermal design but limits peak performance under burst loads.

The 50th percentile also suggests that, despite its age and single-core nature, the processor is not an outlier in terms of overall performance. Many modern low-end parts may outperform it, but the database ranking treats it as an average performer. This is likely because the percentile is based on a broad mix of workloads, and the high L3 cache and 3.00 GHz clock can still handle certain legacy tasks competently.

Power and Thermals

The Intel Xeon MP 3.00 has a TDP of 135 W, a figure that is notably high for a processor with only one core and one thread. This power envelope indicates that the chip consumes a significant amount of energy, even when executing a single instruction stream. The high TDP is a direct consequence of the NetBurst architecture, which favored high clock speeds and deep pipelines over efficiency. The 90 nm process node, while advanced for its release date, still required substantial power to drive the 3.00 GHz clock.

For cooling, a TDP of 135 W implies that a capable air cooler or a low-end liquid cooling solution would be necessary to maintain safe operating temperatures. The processor is intended for server and workstation environments, where chassis airflow is typically more robust than in consumer desktops. The absence of a boost clock means that power consumption remains constant under load, which simplifies thermal management—there are no sudden spikes from dynamic frequency scaling. However, the fixed high TDP also means that idle power is relatively high, as the processor cannot reduce its clock speed to save energy.

Given the end-of-life status, thermal solutions are no longer actively developed for this socket, so users must rely on legacy coolers that support Socket 604. The 135 W figure is a key specification for anyone planning to integrate this processor into a system, as it dictates the minimum cooling capacity required.

Who Should Consider It

The Intel Xeon MP 3.00 is classified as a Server/Workstation processor, and its specifications align with that market segment. With a single core and a single thread, it is not suited for modern multi-threaded workloads such as video rendering, scientific simulations, or server virtualization, which rely on parallel execution. Instead, this processor is best considered for legacy single-threaded applications that were common in the early 2000s, such as database transaction processing, financial modeling, or control systems that were designed for a single execution thread.

The 4 MB L3 cache is a significant asset for workloads that repeatedly access a large working set, as it reduces the need to fetch data from memory. Combined with ECC memory support and a dual-channel memory bus, the processor is well-suited for memory-sensitive tasks that require data integrity, such as file servers or network-attached storage systems. The fixed 3.00 GHz clock provides predictable performance for real-time applications where consistent latency is more important than peak throughput.

For gaming or content creation, this processor is not recommended. It lacks an integrated graphics unit, so a discrete GPU is mandatory, and its single thread cannot handle modern game engines or video editing software that scale across multiple cores. Office productivity tasks, such as word processing or spreadsheets, would run, but the performance would be unremarkable given the 50th percentile ranking. The processor is a niche part, relevant only to those maintaining or repairing legacy server hardware that requires the specific Socket 604 form factor.

Platform and Compatibility

The Intel Xeon MP 3.00 uses the Intel Socket 604 interface, a socket designed for multi-processor server platforms. This socket supports a dual-channel memory bus, which allows for two independent memory channels to be accessed simultaneously. The processor supports ECC memory, a critical feature for server environments where data corruption must be minimized. However, the FACT PACK does not specify the memory type (e.g., DDR, DDR2) or the maximum memory capacity, so those details are unavailable.

The processor is based on the NetBurst architecture with the codename Potomac, and it is part of the Xeon MP generation. The 90 nm process node was used for its fabrication. No PCIe information is provided in the data, so the expansion interface is unknown; however, given the release date of March 28, 2005, it is likely that the platform supported PCIe or AGP, but this is not confirmed.

The production status is "End-of-life," meaning Intel no longer manufactures or supports this processor. Consequently, there is no upgrade path within the Socket 604 platform—users cannot install a newer processor into the same motherboard. The only options are to continue using the existing hardware or migrate to a completely new platform. The lack of a boost clock and the fixed multiplier (multiplierUnlocked is false) further restrict any overclocking or performance tuning.

FAQ

Q: What is the socket type for the Intel Xeon MP 3.00?

A: The processor uses Intel Socket 604.

Q: Does the processor support ECC memory?

A: Yes, ECC memory support is enabled.

Q: How much cache does the processor have?

A: It has 16 KB of L1 cache, 1 MB of L2 cache, and 4 MB of L3 cache.

Q: What is the TDP of this processor?

A: The TDP is 135 W.

Q: When was the Intel Xeon MP 3.00 released?

A: The release date is March 28, 2005.

Q: What is the process node used in its fabrication?

A: The processor is built on a 90 nm process.

Single-Thread vs Multi-Thread Behavior

The Intel Xeon MP 3.00 has exactly one core and one thread, meaning it can execute only a single instruction stream at any given time. This makes the distinction between single-thread and multi-thread performance moot—there is no multi-thread capability to analyze. The processor's performance is entirely determined by its single-thread execution efficiency, which is influenced by its clock speed, cache hierarchy, and microarchitecture.

With a base clock of 3.00 GHz and no boost clock, the processor runs at a constant frequency. This fixed clock speed provides predictable execution times for single-threaded workloads, but it also means that the processor cannot temporarily increase its speed to handle short bursts of activity. The NetBurst architecture, known for its deep pipelines, was designed to achieve high clock frequencies, and 3.00 GHz was a respectable figure for the time.

The cache layout is particularly relevant to single-thread performance. The 4 MB L3 cache is large for a single-core processor and can store a substantial portion of a working set, reducing the frequency of memory accesses. The 1 MB L2 cache and 16 KB L1 cache are also present, with the L1 being split into instruction and data caches (though the pack does not specify the split). In single-threaded workloads, the processor can leverage the full cache capacity without contention from other cores, which can yield a performance advantage over multi-core processors that share cache resources.

In practice, the processor's single-thread behavior is best suited for legacy applications that were written before the multi-core era. These applications often rely on a single thread for the majority of their work and do not benefit from additional cores. The high clock speed and ample cache allow the Xeon MP 3.00 to execute such workloads efficiently, though modern processors with higher IPC (instructions per clock) will generally outperform it despite lower clock speeds.

Benchmark Performance

The benchmark data for the Intel Xeon MP 3.00 is sparse: the average benchmark score is 0, and the percentile versus all CPUs is 50. An average score of 0 indicates that no benchmark results have been recorded in the database for this processor. This could be due to the processor's age, its niche server market, or a lack of standardized testing on this platform. Consequently, any quantitative performance analysis must rely on the percentile ranking and the specification sheet.

A 50th percentile placement means that, according to the database's ranking methodology, this processor performs better than half of all CPUs and worse than the other half. This is a neutral position—not a standout, but not a laggard. Given that the processor was released in 2005 and has a single core, its percentile likely reflects the fact that many low-end modern processors, as well as high-end older ones, are included in the dataset. The 3.00 GHz clock and 4 MB L3 cache may still outperform some entry-level CPUs, while being outpaced by more recent multi-core designs.

Without specific benchmark scores, we cannot compute exact percentage deltas against rivals. The database does not provide nearestRivals entries, so no comparative performance figures are available. What can be inferred is that the processor's performance is moderate for its era, but its single-thread limitation makes it unsuitable for any workload that benefits from parallel execution. In single-threaded tasks, the processor's high clock speed and large L3 cache may yield competitive results, but the lack of a boost clock and the older NetBurst architecture limit its peak capability. Overall, the benchmark data, or lack thereof, underscores that this processor is a legacy part best evaluated on its architectural merits rather than on quantitative scores.