Intel Xeon X5365

Intel Xeon X5365 is a server/workstation processor from the Clovertown generation, built on the Core 2 architecture with a 65 nm process node. It has 4 cores and 4 threads, running at a fixed 3.00 GHz base clock with no boost clock. Its average benchmark score is 682, placing it at the 17th percentile of all CPUs in the database, and its four nearest rivals are grouped tightly around that result with deltas of 0, -0.1, and -0.2 percent.

Platform and Compatibility

The X5365 uses Intel Socket 771, the platform socket associated with Intel's server and workstation Xeon line. The market segment is explicitly Server/Workstation, and the production status is end-of-life. The package is a dual-die Clovertown design with a die size of 2x 143 mm² and a total of 582 million transistors. The process node is 65 nm, and the architecture generation is described as Xeon (Clovertown). These platform details position the X5365 as a 2007-era dual-die server part rather than a modern socket design.

Memory support is DDR2 or DDR3, depending on the motherboard. The memory bus is dual-channel, and ECC memory is supported. This makes the platform suitable for reliability-oriented server workloads, but the exact memory type is not fixed by the processor itself; it depends on the motherboard chosen. Cache configuration consists of 64 KB of L1 per core and 4 MB of L2 per die, with no L3 cache listed. The absence of a boost clock and a locked multiplier mean the 3.00 GHz base clock is the defining frequency for the part.

The part number associated with this SKU is SLAC3SLAED, and the launch MSRP is $1172. For upgrade planning, the Socket 771 interface and end-of-life production status are the main constraints. A drop-in replacement would need to be a Socket 771 processor, and the motherboard must match the DDR2/DDR3 memory support requirement. The locked multiplier also removes frequency adjustment as an upgrade path, so the platform's performance is fixed by the selection of a compatible Socket 771 processor.

Power and Thermals

The X5365 has a TDP of 150 W. That is a high thermal load, especially for a 65 nm processor with a dual-die package. Since there is no boost clock in the available data, the thermal design has to sustain only the 3.00 GHz base clock across all 4 cores, but it must still do so under sustained multi-threaded operation. The 150 W TDP implies a cooler with enough capacity for continuous operation at that thermal class; this is not a low-power part that can be handled by minimal cooling.

For a server/workstation platform, the cooling expectation is an active solution with appropriate airflow for the chassis. The 150 W TDP places the X5365 in a category where cooling should be selected for high sustained load rather than intermittent or single-core bursts. The lack of a boost clock means there is no turbo headroom to manage, but it also means the processor cannot reduce thermal demand by falling back to a lower frequency during lightly threaded tasks; the base frequency is the operating point.

Single-Thread vs Multi-Thread Behavior

The X5365 has 4 cores and 4 threads, so the thread count matches the physical core count. In Cinebench R20, the single-core score is 117 and the multi-core score is 832. In Cinebench R23, the single-core score is 279 and the multi-core score is 1981. In Cinebench R15, the multi-core score is 199.

These results show a clear split between single-thread and multi-thread performance. The multi-core scores are substantially higher than the single-core scores in both R20 and R23, which indicates that the X5365 performs much better when all 4 cores are engaged. Workloads with enough parallelism can take advantage of the 4 physical cores, while single-threaded workloads are limited by the 3.00 GHz base clock and the older Core 2 architecture. The lack of a boost clock also means single-thread performance cannot be dynamically raised when only one core is active.

For real workloads, the practical implication is that the X5365 is better suited to multi-threaded batch processing than to lightly threaded interactive tasks. The multi-core results are the stronger part of the benchmark profile, while the single-core results anchor the processor's overall position in the database.

How It Compares

Intel Xeon E5472: The nearest rival in the data is another Xeon, the E5472. Its average score is 682, identical to the X5365's average score, and the deltaPct is 0. These two processors are tied in aggregate benchmark performance.

Intel Core i3-4000M: The Core i3-4000M also has an average score of 682, with a deltaPct of 0. Despite being a different type of Intel processor, it matches the X5365 exactly in the compiled benchmark average.

Intel Celeron G3950: The Celeron G3950 has an average score of 683, with a deltaPct of -0.1. This means the X5365 trails the Celeron by 0.1 percent in aggregate score.

Intel Core m5-6Y57: The Core m5-6Y57 has an average score of 684, with a deltaPct of -0.2. The X5365 is 0.2 percent behind this rival, the largest gap among the four nearest rivals.

Benchmark Performance

The benchmark profile for the X5365 includes Cinebench R15 multi-core at 199, Cinebench R20 multi-core at 832, Cinebench R20 single-core at 117, Cinebench R23 multi-core at 1981, and Cinebench R23 single-core at 279. The average benchmark score is 682, and the percentile rank of 17 places this processor in the lower portion of the database.

The exact deltas against the nearest rivals are 0 against the Intel Xeon E5472, 0 against the Intel Core i3-4000M, -0.1 against the Intel Celeron G3950, and -0.2 against the Intel Core m5-6Y57. These are extremely small margins. The X5365, the E5472, and the i3-4000M all share an average score of 682, while the Celeron G3950 and Core m5-6Y57 are only one and two tenths of a percent higher, respectively.

The multi-core Cinebench results are the strongest part of the X5365's performance profile. The R23 multi-core score of 1981 is much higher than the R20 multi-core score of 832, which is consistent with the different Cinebench versions, but both results are well above the corresponding single-core scores. The R20 multi-core score of 832 versus the R20 single-core score of 117 illustrates how dependent this processor is on parallel execution. Similarly, the R23 multi-core score of 1981 versus the R23 single-core score of 279 shows the same pattern in a newer workload. The R15 multi-core score of 199 rounds out the Cinebench records.

The 17th percentile rank means the X5365 sits below the large majority of CPUs in the benchmark database. The average benchmark score of 682 is the anchor for that rank, and the nearest rival cluster confirms that this score is common across several older and lower-power Intel processors. The X5365 is not an isolated performer at the bottom of the list; it is part of a dense grouping of CPUs with nearly identical average scores. The negative deltas against the Celeron G3950 and Core m5-6Y57 are small enough that benchmark variation could move the ordering, but the data as recorded places the X5365 just behind those two parts. Against the Xeon E5472 and Core i3-4000M, the X5365 is exactly level in aggregate score.