Intel Xeon E5345

The Intel Xeon E5345 is an end-of-life Server/Workstation processor from Intel's Core 2 architecture, codenamed Clovertown. It is a 4-core, 4-thread chip with a 2.33 GHz base clock and no boost clock, packaged for Intel Socket 771. The 65 nm design integrates 582 million transistors across a die size of 2x 143 mm², with an L1 cache of 64 KB per core and an L2 cache of 4 MB per die; no L3 cache is listed. It supports dual-channel DDR2 or DDR3 depending on the motherboard, and ECC memory is supported. The data set gives an average benchmark score of 546, an 11th-percentile ranking, and a launch MSRP of $851.

How It Compares

The Intel Core M-5Y70 is one of the nearest rivals. That chip has an average score of 547, while the E5345 has an average score of 546. The deltaPct of -0.3 means the E5345 trails the Core M-5Y70 by 0.3% in aggregate benchmark performance.

The AMD Athlon II X3 450 appears with the same 547 average and the same deltaPct of -0.3. The E5345 is therefore 0.3% behind this rival as well, putting the two CPUs in a statistical tie on the aggregate metric.

The Intel Core i5-540M is the rival that the E5345 leads. Its average score is 544, and the deltaPct of 0.4 places the E5345 0.4% ahead. This is the only positive delta among the four nearest rivals.

The AMD A6-9500 has the highest average score in the group at 549. The deltaPct of -0.5 makes this the largest gap in either direction among the listed nearest rivals, although the margin is still small.

Power and Thermals

The E5345 has an 80 W TDP, placing it in a modest thermal class for a 65 nm dual-die Xeon. The package is listed as 2x 143 mm², and the transistor count is 582 million. Those structural details, together with the 80 W envelope, imply a cooling tier that a conventional Socket 771 cooler can handle. The data lists no boost clock, so there is no turbo state to raise power demand above the base 2.33 GHz operating point. The multiplier is not unlocked, so the stock thermal envelope is also the practical operating envelope. As a Server/Workstation part that is end-of-life, the E5345 belongs to the legacy cooling ecosystem of its socket.

Single-Thread vs Multi-Thread Behavior

The E5345 has 4 threads and 4 cores, so there is no extra logical threading beyond the physical core count. Its base clock is 2.33 GHz, and no boost clock is listed, meaning individual cores cannot be pushed above that frequency automatically.

The Cinebench results show a wide split between single-core and multicore performance. In Cinebench R20, the multicore score is 666 and the single-core score is 94. In Cinebench R23, the multicore score is 1587 and the single-core score is 224. The R15 entry is multicore only, with a score of 159.

This split indicates that the E5345 delivers most of its throughput when all four threads are active. Multithreaded workloads can use the full 4-core design, while single-threaded or lightly threaded workloads are limited by the per-core performance of a 2.33 GHz Clovertown processor. The lack of a boost clock removes any temporary single-thread headroom.

FAQ

Q: What socket and release information is listed for the E5345?

A: It uses Intel Socket 771, was released November 13, 2006, and is listed as a Server/Workstation part with end-of-life production status.

Q: What memory support does the E5345 have?

A: The fact pack lists DDR2 and DDR3 support, depending on the motherboard. The memory bus is dual-channel, and ECC memory is supported.

Q: What is the cache hierarchy?

A: The L1 cache is 64 KB per core, the L2 cache is 4 MB per die, and no L3 cache is listed.

Q: Is the multiplier unlocked?

A: No. The multiplierUnlocked field is false, so the processor is not unlocked.

Q: Does it include integrated graphics?

A: No integrated graphics is listed in the data.

Q: What are the key benchmark figures?

A: The average benchmark score is 546, placing the E5345 at the 11th percentile. Cinebench R15 multicore is 159, Cinebench R20 multicore is 666 and single-core is 94, and Cinebench R23 multicore is 1587 and single-core is 224.

Benchmark Performance

The E5345's average benchmark score of 546 puts it at the 11th percentile of all CPUs in the database. That is a low aggregate position, but the nearest-rival data shows a very tight cluster. The Intel Core M-5Y70 and AMD Athlon II X3 450 both average 547, with deltaPct values of -0.3, so the E5345 sits 0.3% behind both. The Intel Core i5-540M averages 544, with a deltaPct of 0.4, meaning the E5345 is 0.4% ahead. The AMD A6-9500 averages 549, with a deltaPct of -0.5, meaning the E5345 is 0.5% behind. The rival average scores range from 544 to 549, and the E5345 sits inside that band at 546.

The Cinebench scores provide the workload-level detail behind that aggregate. The R20 multicore score is 666 and the single-core score is 94. The R23 multicore score is 1587 and the single-core score is 224. The R15 multicore score is 159. These results show a processor that scales well across its four threads but has limited per-core output. The 11th percentile confirms that, compared with the full database, most CPUs score higher on average. At the same time, the nearest rivals are separated from the E5345 by only 0.3% to 0.5% in aggregate score, so within its immediate peer group the E5345 is effectively level with the competition.