Intel Xeon E5530 vs Intel Xeon E5540 Comparison

The Verdict

The Intel Xeon E5540 is the clear winner across every recorded benchmark in the database. It outperforms the Intel Xeon E5530 in all five head-to-head tests, with margins ranging from 2.4% to 2.9%. The E5540 wins on both single-core and multi-core workloads, making it the stronger choice for any application that relies on raw processing speed.

The E5530, while slightly slower, shares the same core architecture, cache configuration, memory support, and power envelope. For workloads where the clock speed difference of 0.13 GHz base and 0.13 GHz boost does not matter, the E5530 remains functionally equivalent. However, the data consistently favors the E5540, and there is no benchmark category where the E5530 pulls ahead.

The average benchmark score reinforces this conclusion. The E5540 records an average score of 820, while the E5530 sits at 801, a gap of 19 points. The E5540 also holds a higher percentile ranking at 22 compared to 21 for the E5530. Buyers choosing between these two should select the E5540 unless the lower launch MSRP of the E5530 is a decisive factor.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Xeon E5540 wins every multi-core test. In Cinebench R15 multi-core, it scores 240 versus 234 for the E5530, a 2.6% advantage. In Cinebench R20 multi-core, the margin is 1001 versus 977, a 2.5% lead. In Cinebench R23 multi-core, the E5540 scores 2384 against 2328, a 2.4% difference.

Q: How do the two chips compare in single-core performance?

A: The E5540 also leads in single-core tests. Cinebench R20 single-core shows 141 versus 137, a 2.9% advantage. Cinebench R23 single-core shows 336 versus 328, a 2.4% lead. The single-core margin is slightly larger than the multi-core margin in R20, suggesting the clock speed difference has a measurable impact on lightly threaded tasks.

Q: Are these processors identical in architecture?

A: Yes. Both are built on the Nehalem architecture with the Gainestown codename, using a 45 nm process from Intel. Both have 4 cores and 8 threads, 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 8 MB of shared L3 cache. The transistor count is 731 million and the die size is 263 mm² for both.

Q: What memory support do they offer?

A: Both support DDR3 memory in a triple-channel configuration with a memory bandwidth of 25.6 GB/s. Both also support ECC memory, which is expected for server and workstation parts. PCIe support is Gen 2 for both.

Q: What is the power consumption of each processor?

A: Both have a TDP of 80 watts. The power envelope is identical, so the E5540 delivers higher performance without any additional power cost.

Q: When were these processors released?

A: Both were released on the same date, March 29, 2009. Both are now end-of-life products. The E5540 had a launch MSRP of $774, while the E5530 had a launch MSRP of $530.

Architecture Differences

The two processors share the same fundamental architecture. Both use the Nehalem microarchitecture under the Gainestown codename, fabricated on Intel's 45 nm process. The transistor count is identical at 731 million, and the die size is the same at 263 mm². There are no architectural differences in the core design, cache hierarchy, or memory controller.

The cache layout is identical across both parts. Each core has 64 KB of L1 cache and 256 KB of L2 cache, with a shared 8 MB L3 cache for the entire processor. This symmetric design means that performance differences come entirely from clock speed, not from any structural advantage.

Memory support is also identical. Both processors use DDR3 memory in a triple-channel arrangement, delivering 25.6 GB/s of memory bandwidth. Both support ECC memory, a critical feature for server reliability. PCIe support is Gen 2 for both.

The only meaningful distinction in the architecture data is the clock speed. The E5540 runs at a 2.53 GHz base clock and 2.80 GHz boost clock. The E5530 runs at a 2.40 GHz base clock and 2.67 GHz boost clock. This 0.13 GHz difference at both base and boost is the sole source of the E5540's benchmark advantage.

Both processors are unlocked? No, neither has an unlocked multiplier. The multiplier is locked on both parts, so users cannot overclock to close the gap. The part numbers differ, with the E5540 using SLBF6 and the E5530 using SLBF7.

Specification Differences

The specification sheet shows only two differences between these processors. The first is the clock speed. The E5540 has a base clock of 2.53 GHz and a boost clock of 2.80 GHz. The E5530 has a base clock of 2.40 GHz and a boost clock of 2.67 GHz. This is the only performance-relevant specification that differs.

The second difference is the launch MSRP. The E5540 launched at $774, while the E5530 launched at $530. The lower-priced E5530 also delivers slightly lower performance, as the benchmark data confirms.

All other specifications match exactly. Core count is 4 with 8 threads for both. TDP is 80 watts for both. Socket is Intel Socket 1366 for both. The process node, foundry, transistor count, die size, cache sizes, memory support, memory bus, memory bandwidth, ECC support, PCIe generation, market segment, production status, and release date are all identical.

The integrated graphics field is null for both, indicating neither processor includes a GPU. Both are intended for server and workstation use, where discrete graphics or no graphics are the norm.

Head-to-Head Benchmarks

The head-to-head benchmark data shows a consistent victory for the E5540 across all five tests. The margins are narrow but uniform, ranging from 2.4% to 2.9%.

In Cinebench R15 multi-core, the E5540 scores 240 versus 234 for the E5530, a 2.6% advantage. This is the second-largest margin in the dataset. The R15 test is an older benchmark, but it still reflects the real-world performance gap between the two clock speeds.

Cinebench R20 multi-core shows a similar pattern. The E5540 scores 1001, while the E5530 scores 977. The delta is 2.5%. This test scales with core count and clock speed, so the 0.13 GHz advantage translates directly into a proportional score increase.

The single-core R20 test reveals the largest margin. The E5540 scores 141 against 137 for the E5530, a 2.9% lead. This larger delta suggests that the boost clock difference is especially impactful when only one core is active. The E5540's 2.80 GHz boost versus the E5530's 2.67 GHz boost gives it a clear edge in lightly threaded workloads.

Cinebench R23 multi-core shows the smallest margin at 2.4%. The E5540 scores 2384, and the E5530 scores 2328. The R23 multi-core test is the most demanding in the set, and the relative gap narrows slightly as the workload scales.

Cinebench R23 single-core shows another 2.4% lead. The E5540 scores 336, and the E5530 scores 328. This confirms that the single-core advantage persists even in the newer benchmark version.

The total win count is 5 for the E5540 and 0 for the E5530. There is no benchmark in the database where the E5530 matches or exceeds the E5540.

Where Each One Wins

The E5540 wins in every measured category. It is the better choice for any workload that benefits from higher clock speeds, including both single-threaded and multi-threaded applications. The data shows a 2.4% to 2.9% advantage depending on the specific test, which translates to faster rendering, compilation, and general server processing.

The E5530 does not win any benchmark category, but it remains a viable alternative in specific contexts. Its identical architecture, cache hierarchy, memory support, and TDP mean that it behaves like a slightly slower E5540. For workloads that are not clock-sensitive, such as memory-bandwidth-bound tasks or I/O-heavy server operations, the practical difference may be negligible.

The E5530 also holds a price advantage at launch, with a launch MSRP of $530 compared to $774 for the E5540. For system builders who need the same core count, memory bandwidth, and power envelope at a lower initial cost, the E5530 offers a path to similar capability with reduced performance in compute-bound scenarios.

The percentile ranking shows the E5540 at the 22nd percentile of all CPUs, while the E5530 sits at the 21st percentile. This one-percentile gap reflects the narrow but real performance difference. In the nearest rival comparisons, the E5540 matches the AMD PRO A10-8750B at a 0.1% negative delta, while the E5530 ties with both the AMD A10-7700K and Intel Pentium Silver J5040 at 0% delta.

For users upgrading from older platforms, the E5540 is the safer recommendation. It wins all five head-to-head tests, holds a higher average score, and achieves a higher percentile ranking. The E5530 is the choice only when the launch price difference matters more than the consistent, if modest, performance advantage of the E5540.