Intel Xeon X3450

The Intel Xeon X3450 is a 4-core, 8-thread processor from Intel, built on the 45 nm Nehalem architecture with the Lynnfield codename. It was released on 2009-09-07, targets the server/workstation segment, and is now end-of-life. The base clock is 2.67 GHz, the boost clock is 3.20 GHz, and the TDP is 95 W. It has 8 MB of shared L3 cache, supports DDR3 memory in a dual-channel configuration, and carries an average benchmark score of 839. That score places the X3450 at the 22nd percentile of all CPUs in the database. Its launch MSRP was $241.

Benchmark Performance

The aggregate benchmark data shows a chip sitting well down the performance distribution. The X3450 scores 245 in Cinebench R15 multicore, 1024 in Cinebench R20 multicore, and 2440 in Cinebench R23 multicore. Single-core scores are 144 in Cinebench R20 and 344 in Cinebench R23. These are low absolute numbers, and the 22nd percentile overall standing reinforces that position.

Looking at the nearest rivals, the X3450 is essentially tied with all of them. Its 839 average score exactly matches the Intel Xeon X5470, which also scores 839 and has a 0% delta. It is 0.2% behind the Intel Core i7-3520M’s 841, 0.3% ahead of the Intel Core i7-920’s 836, and 0.4% behind the AMD FX-8800P’s 843. These are tiny margins; the data does not indicate a meaningful performance gap among this group.

For a CPU from the Nehalem generation, the Cinebench results are plausible for a 4-core/8-thread part, but the absolute scores are far below what the highest-scoring CPUs in the database achieve. The X3450’s position is defined less by a particular strong point than by an aged but functional balance of cores and clock speed.

How It Compares

• Intel Xeon X5470, The direct peer. Both have an average score of 839, and the delta is 0%. For workloads captured by this database average, moving from one to the other would produce no measurable change in CPU-bound performance.

• Intel Core i7-3520M, The X3450 trails by 0.2% against this rival’s 841 average. That margin is so small that it falls inside normal run-to-run variance. The two should be treated as equivalent in aggregate performance.

• Intel Core i7-920, The X3450 leads by 0.3%, with the i7-920 averaging 836. The edge exists in the data, but it is not large enough to be a deciding factor in any real workload.

• AMD FX-8800P, The largest separation in this rival group is a 0.4% deficit, with the FX-8800P averaging 843. Even the biggest delta here is negligible. All four nearest rivals occupy the same performance band, and the X3450 is not an outlier in either direction.

Power and Thermals

The X3450 is a 95 W part. On a 45 nm process with 774 million transistors and a 296 mm² die, that TDP represents a moderate thermal load. The architecture is old, but the power envelope is manageable by a standard air cooler; no exotic cooling is necessary.

Because the chip has no integrated graphics listed in the data, the system must carry a discrete GPU. That adds its own heat, but it does not change the CPU cooler requirement. For a small server or workstation, a tower-style CPU cooler or a decent cooling solution in a chassis with airflow should be enough. Sustained all-core workloads will still produce meaningful heat, but the 95 W TDP keeps the X3450 in a mainstream cooling tier.

Who Should Consider It

The X3450 is an end-of-life server/workstation chip with a 22nd-percentile aggregate score. It is not the right starting point for a modern performance desktop. Gamers should look elsewhere: the single-core scores are low, at 144 in Cinebench R20 and 344 in Cinebench R23, and the lack of integrated graphics means a discrete card is required. Older or less frame-rate-sensitive games may run, but the CPU will hold back newer titles.

Creation workloads are also constrained. Cinebench R23 multicore at 2440 and R20 multicore at 1024 show modest rendering throughput. Small, infrequent encodes or lightweight photo editing are acceptable, but sustained 3D rendering or heavy video work would be slow. Office workloads, by contrast, are within reach: web browsers, email, document editing, and spreadsheet work do not demand high core counts or strong single-thread speed. The X3450’s 4 cores and 8 threads can handle that kind of usage.

The best use case is a legacy server or workstation where the platform is already present and ECC memory support is useful. With ECC memory enabled, the X3450 is a reasonable fit for a small storage server, a modest virtual-machine host, or a test workstation. Its production status and DDR3 memory standard mean it should be considered only for existing Socket 1156 systems, not for a new build.

Single-Thread vs Multi-Thread Behavior

The X3450 presents a clear split. Single-core Cinebench scores are 144 in R20 and 344 in R23. Multi-core scores are 1024 in R20 and 2440 in R23. The multi-core numbers are much higher, which confirms that the 4-core/8-thread design extracts a large advantage from threaded workloads.

However, the single-core numbers are still low in absolute terms. Applications that rely on one primary thread, older games, some productivity tools, or interactive scripts, will feel that weakness. A workload that spreads across all eight threads will get closer to what the multi-core scores suggest, but the low single-core baseline limits responsiveness in lightly threaded tasks.

The consistency between the R20 and R23 result patterns suggests the relative behavior holds across both benchmark versions. Users should not expect high per-core speed from this chip. It is an old multi-threaded part, best suited to tasks that can use multiple threads rather than tasks that need a single very fast core.

Platform and Compatibility

The X3450 uses Intel Socket 1156. Memory support is DDR3 with a dual-channel memory bus and 21.3 GB/s of bandwidth; ECC memory is supported. On the CPU side, PCIe is Gen 2 with 16 lanes available from the CPU only. There is no integrated graphics, so a discrete GPU is mandatory for display output.

The multiplier is locked, and the part number is SLBLD. Released on 2009-09-07, the processor is classified as end-of-life, so the practical upgrade path is limited to what the existing Socket 1156 motherboard can accept. Anyone building around this chip today should be aware that the DDR3 memory, PCIe Gen 2 lanes, and older CPU socket all represent a closed platform. The data shows a hardware generation with no forward path; it is a compatibility match for vintage systems rather than a growth platform.