Intel Pentium G4600T vs Intel Xeon X5550 Comparison

The Intel Pentium G4600T and the Intel Xeon X5550 represent two very different eras of Intel design, yet the benchmark data places them in a surprisingly tight contest. The G4600T is a modern, low-power Kaby Lake part, while the X5550 is a high-core-count Nehalem server chip from a previous generation. The data shows a consistent, albeit narrow, victory for the Pentium across every single test, making this a fascinating study in how architectural advancements can offset raw core-count disadvantages.

Head-to-Head Benchmarks

The head-to-head results are remarkable for their uniformity. The Intel Pentium G4600T wins all five benchmark comparisons, but the margins are consistently slim, ranging from a 0.8% advantage to a 1.3% advantage. This is not a case of one chip dominating another; rather, it is a photo finish in every discipline.

Looking at the multicore scores, the Pentium G4600T edges out the Xeon X5550 in Cinebench R15 with a score of 262 versus 259, a delta of 1.2%. This pattern repeats in Cinebench R20 multicore, where the Pentium scores 1092 against the Xeon's 1083, a 0.8% lead. The largest gap between the two comes in the Cinebench R20 single-core test, where the Pentium's 154-point score is 1.3% higher than the Xeon's 152 points. This is a significant finding, as it suggests the Pentium's architectural efficiency provides a per-thread advantage that the older Xeon cannot overcome.

The trend holds in the newer Cinebench R23 tests. In the multicore run, the G4600T scores 2602, while the X5550 scores 2580, a 0.9% difference. The single-core R23 test shows a similar 0.8% delta, with scores of 367 and 364, respectively. The data implies that despite having half the cores and threads, the Pentium's superior per-core performance is enough to keep it ahead in multi-threaded workloads. The average benchmark scores confirm this near-parity, with the Pentium at 895 and the Xeon at 888. Both processors sit at the 24th percentile of all CPUs, indicating they are in the same performance tier overall.

Architecture Differences

The architectural chasm between these two processors is vast, which makes the benchmark parity even more compelling. The Pentium G4600T is built on the Kaby Lake architecture using a 14 nm process node, while the Xeon X5550 uses the much older Nehalem architecture on a 45 nm process. This difference in process technology is a primary driver of the performance-per-watt and clock-speed advantages seen in the Pentium.

The core configurations are starkly different. The Pentium is a dual-core part with four threads, while the Xeon is a quad-core part with eight threads. The Xeon compensates for its older architecture with more raw silicon, featuring 731 million transistors on a 263 mm² die, whereas the Pentium's transistor count and die size are not listed. Cache configurations also differ significantly. The Pentium has a shared 3 MB L3 cache, while the Xeon has a much larger shared 8 MB L3 cache. Both share the same per-core L1 and L2 cache sizes of 64 KB and 256 KB, respectively.

Memory support is another clear differentiator. The Pentium supports DDR4 memory over a dual-channel bus with a stated memory bandwidth of 38.4 GB/s. The Xeon, from an earlier era, supports DDR3 over a triple-channel bus, though its memory bandwidth figure is not provided. The Pentium also integrates Intel HD 630 graphics, a feature completely absent from the server-oriented Xeon. The Xeon does include ECC memory support, a feature not available on the Pentium. Finally, the I/O capabilities differ: the Pentium offers PCIe Gen 3 with 16 lanes, while the Xeon is limited to PCIe Gen 2.

Where Each One Wins

Based strictly on the benchmark data, the Intel Pentium G4600T wins in every measurable category. It is the better choice for any workload that relies on single-threaded performance, as evidenced by its wins in both Cinebench R20 and R23 single-core tests. But its consistent lead in multicore tests is more surprising, given that the Xeon has double the cores and threads. This suggests that for the specific Cinebench workloads measured, the Pentium's superior instruction handling and clock speed are more impactful than the Xeon's additional cores.

The Intel Xeon X5550, despite losing every benchmark, still presents a case for specific use cases based on its feature set. Its support for ECC memory makes it applicable for error-sensitive computing environments, a capability the Pentium lacks. Its larger 8 MB L3 cache could theoretically benefit certain data-heavy workloads, although the benchmark results do not demonstrate this advantage. The Xeon's market segment is listed as Server/Workstation, implying it was designed for sustained multi-threaded throughput, yet in this direct comparison, it falls short.

The data implies that for general desktop tasks, the Pentium G4600T is the superior performer. For a user requiring ECC memory or a platform with triple-channel memory bandwidth, the Xeon X5550 would be the only option of the two, even if its raw processing speed is slightly lower.

FAQ

Q: Which processor has a higher single-core performance?

A: The Intel Pentium G4600T. It wins the Cinebench R20 single-core test with a score of 154 against the Xeon X5550's 152, a 1.3% difference, and also wins the R23 single-core test with 367 versus 364 (0.8%).

Q: Does the Xeon X5550 beat the Pentium in any benchmark?

A: No. The head-to-head data shows the Intel Pentium G4600T winning all five benchmark comparisons, with the Xeon X5550 recording zero wins.

Q: What is the difference in core and thread counts?

A: The Intel Pentium G4600T has 2 cores and 4 threads. The Intel Xeon X5550 has 4 cores and 8 threads. Despite having half the resources, the Pentium still achieves a higher benchmark score.

Q: Do these processors support the same memory type?

A: No. The Intel Pentium G4600T supports DDR4 memory in a dual-channel configuration. The Intel Xeon X5550 supports DDR3 memory in a triple-channel configuration.

Q: Which CPU has a higher thermal design power (TDP)?

A: The Intel Xeon X5550 has a TDP of 95 watts, which is significantly higher than the Intel Pentium G4600T's 35 watts. This indicates the Pentium is designed for much lower power consumption.

Q: What is the average benchmark score difference between the two?

A: The Intel Pentium G4600T has an average benchmark score of 895, while the Intel Xeon X5550 has an average score of 888. This puts the Pentium 0.7% ahead on average.

Specification Differences

The following specifications differ between the Intel Pentium G4600T and the Intel Xeon X5550:

• Cores: 2 (Pentium) vs 4 (Xeon)
• Threads: 4 (Pentium) vs 8 (Xeon)
• Base Clock: 3.00 GHz (Pentium) vs 2.67 GHz (Xeon)
• Boost Clock: None (Pentium) vs 3.07 GHz (Xeon)
• TDP: 35 W (Pentium) vs 95 W (Xeon)
• Socket: Intel Socket 1151 (Pentium) vs Intel Socket 1366 (Xeon)
• Architecture: Kaby Lake (Pentium) vs Nehalem (Xeon)
• Codename: Kaby Lake (Pentium) vs Gainestown (Xeon)
• Process Node: 14 nm (Pentium) vs 45 nm (Xeon)
• Transistors: Not listed (Pentium) vs 731 million (Xeon)
• Die Size: Not listed (Pentium) vs 263 mm² (Xeon)
• L3 Cache: 3 MB shared (Pentium) vs 8 MB shared (Xeon)
• Memory Support: DDR4 (Pentium) vs DDR3 (Xeon)
• Memory Bus: Dual-channel (Pentium) vs Triple-channel (Xeon)
• Memory Bandwidth: 38.4 GB/s (Pentium) vs Not listed (Xeon)
• ECC Memory: False (Pentium) vs True (Xeon)
• PCIe: Gen 3, 16 Lanes (Pentium) vs Gen 2 (Xeon)
• Integrated Graphics: Intel HD 630 (Pentium) vs None (Xeon)
• Market Segment: Desktop (Pentium) vs Server/Workstation (Xeon)
• Production Status: Active (Pentium) vs End-of-life (Xeon)
• Release Date: 2017-01-02 (Pentium) vs 2009-03-29 (Xeon)
• Part Number: SR35R (Pentium) vs SLBF5 (Xeon)

The Verdict

The benchmark data is unambiguous: the Intel Pentium G4600T is the faster processor in every test recorded. For any user prioritizing processing speed, whether single-threaded or multi-threaded, the Pentium is the clear choice based on the data. Its wins in all five Cinebench tests, coupled with a lower 35 W TDP, make it a more efficient and capable part for general computing tasks.

The Intel Xeon X5550, however, is not without its merits. Its support for ECC memory is a critical feature for systems where data integrity is paramount, such as in a home server or a workstation handling critical calculations. The larger 8 MB L3 cache and triple-channel memory bus suggest a design intent for high-bandwidth, multi-threaded server workloads, even if the measured Cinebench scores do not reflect an advantage. Ultimately, the choice depends on the specific requirements: the Pentium G4600T for pure performance and efficiency, or the Xeon X5550 for its server-grade features like ECC memory support, accepting its lower performance and higher power draw.