Intel Xeon X3430

The Intel Xeon X3430 is a 45 nm Lynnfield server/workstation processor for Intel Socket 1156. It pairs four Nehalem cores with four threads, a 2.40 GHz base clock, a 2.80 GHz boost clock, and a 95 W TDP. The database’s average benchmark score is 676, which places the X3430 at the 17th percentile of all CPUs and immediately next to a group of rivals whose average scores are 678 and 682.

How It Compares

The nearest rival is the AMD A8-5500B, which posts an average score of 678. The deltaPct of -0.2% shows the X3430 is essentially tied with it in aggregate performance. In practical terms, the two CPUs should land in the same performance class for mixed workloads, with neither holding a meaningful overall advantage.

The Intel Xeon X5365 scores 682, leaving the X3430 0.8% behind. That is still a narrow gap, but it is the first sign that the X3430 is not the strongest chip in its own peer group. A 0.8% aggregate deficit is unlikely to produce visible differences in most applications, but it does mean the X5365 edges ahead in the database’s summary metric.

The Intel Core i3-4000M also scores 682 and carries a -0.9% deltaPct. Although the X3430 is a server/workstation part and the i3-4000M is a different processor in a different market segment, their average scores place them in the same tight performance cluster.

The Intel Xeon E5472 matches that pattern: 682 average and a -0.9% deltaPct. With the A8-5500B at 678 and the three other rivals at 682, the X3430’s 676 average is the lowest score in this nearest-rival group. The deltas are -0.2%, -0.8%, -0.9%, and -0.9%, so all four nearest rivals are slightly faster on aggregate, but none is dramatically faster.

Power and Thermals

The X3430 is rated for a 95 W TDP. That places it in a conventional air-cooling thermal envelope; a capable tower-style cooler should be enough, and the data does not indicate any exotic cooling requirement. The processor is built on a 45 nm process, with a 296 mm² die and 774 million transistors, so the power density is that of an older Nehalem-generation part rather than a modern high-core-count chip.

The lack of integrated graphics is worth factoring into system thermals: the CPU package itself does not include a display engine, which removes one potential heat source from the processor package. A discrete graphics card remains mandatory for any display output, and that card will add its own thermal load to the system.

The market segment is Server/Workstation, which aligns with the ECC memory support and the expectation of sustained workloads. A 95 W TDP under continuous multi-threaded load still requires reasonable case airflow, but this is not a thermal design point that demands high-end liquid cooling. The production status is End-of-life, so the X3430 should be treated as a legacy part with an established power and thermal profile.

Benchmark Performance

The Cinebench results give a clear performance snapshot. In Cinebench R15 multi-core, the X3430 scores 197. In Cinebench R20, it scores 824 multi-core and 116 single-core. In Cinebench R23, it scores 1964 multi-core and 277 single-core. The multi-core scores are far higher than the single-core scores on the same tests, which is expected from a 4-core/4-thread processor with no additional logical threads.

Against the nearest rivals, the aggregate picture is tight. The X3430’s average benchmark score is 676. The AMD A8-5500B is 0.2% higher, the X5365 is 0.8% higher, and both the i3-4000M and E5472 are 0.9% higher. These gaps are small enough that the X3430 is effectively competing in a dead heat with all four rivals, even though it sits at the bottom of that group.

The broader context is less favorable. A 17th percentile rank across all CPUs means the X3430 is positioned well below the majority of processors in the database. It may be nearly indistinguishable from its nearest rivals, but that entire cluster sits low in the overall performance distribution. The Cinebench R23 single-core score of 277 and the R20 single-core score of 116 both show that this is not a strong chip for lightly threaded tasks, while the multi-core results indicate that the processor’s four physical cores can still produce a measurable advantage over its own single-core numbers.

FAQ

Q: What socket does the Intel Xeon X3430 use?

A: It uses Intel Socket 1156.

Q: Does the X3430 have integrated graphics?

A: No. The integrated graphics field is null, so a discrete graphics solution is required for display output.

Q: What memory does the X3430 support?

A: It supports DDR3 memory in a dual-channel configuration, with a listed memory bandwidth of 21.3 GB/s and ECC support.

Q: How does the X3430 compare to its closest rival, the AMD A8-5500B?

A: The X3430 has an average benchmark score of 676, while the A8-5500B scores 678. The deltaPct is -0.2%, meaning the AMD part is slightly ahead in aggregate performance.

Q: Is the X3430 still in production?

A: No. Its production status is End-of-life, and it was released on 2009-09-07.

Q: What was the launch MSRP?

A: The launch MSRP was $189.

Single-Thread vs Multi-Thread Behavior

The X3430 has four cores and four threads, so each core handles exactly one thread. There is no extra thread count from simultaneous multithreading, which means the operating system will see four logical processors. In single-threaded workloads, the processor can move from its 2.40 GHz base clock toward its 2.80 GHz boost clock, providing a modest amount of frequency headroom. In multi-threaded workloads, all four cores are active, and the 95 W TDP defines the sustained thermal ceiling for that operation.

The benchmark split is stark. Cinebench R20 shows 116 single-core and 824 multi-core, while Cinebench R23 shows 277 single-core and 1964 multi-core. In both tests, the multi-core result is substantially larger than the single-core result, which confirms that the X3430 behaves like a parallel-friendly part. However, four threads is a limited amount of parallelism. Applications that can scale across many cores will still be constrained by the modest core count, and the 17th percentile overall ranking indicates that the single-thread scores are low relative to the wider CPU pool.

Cache layout plays a supporting role in this behavior. Each core has 64 KB of L1 cache and 256 KB of L2 cache, with a shared 8 MB L3 cache. The shared L3 gives all four cores a common pool for frequently accessed data, which can help multi-threaded workloads where cores need to exchange or share data. For single-threaded work, the main relevant factors are the 2.40 GHz base and 2.80 GHz boost clocks, since only one core can benefit from the full cache and frequency resources.

Platform and Compatibility

The X3430 is built for Intel Socket 1156 and belongs to the Nehalem architecture with the Lynnfield codename. It is classified as a Server/Workstation processor, and its production status is End-of-life. The part number is SLBLJ.

Memory support is DDR3 through a dual-channel interface, with a listed bandwidth of 21.3 GB/s. ECC memory support is present, which matters for workstation stability and error-resistant operation. The PCIe connection is Gen 2 with 16 lanes provided by the CPU only. That is enough for one discrete graphics card or a single high-bandwidth expansion device, but it does not provide additional integrated graphics.

Because the processor has no integrated graphics, any system built around it needs a separate graphics adapter. The 16 PCIe Gen 2 lanes are the only CPU-attached PCIe connectivity listed in the data, so expansion options are defined by that lane budget. The multiplier is locked, which means performance tuning is constrained to other methods rather than a free multiplier.

The upgrade path is limited by the socket and end-of-life status. Any motherboard change would need to be a Socket 1156 board, and the data set does not list specific compatible alternative processors beyond the socket designation. The X3430 is therefore best viewed as a complete platform decision around an older, low-percentile CPU with a conventional 95 W cooling requirement and ECC-capable DDR3 memory support.