Intel Pentium G4560T vs Intel Xeon X5550 Comparison

# Intel Xeon X5550 vs Intel Pentium G4560T

The Intel Xeon X5550 and Intel Pentium G4560T are separated by nearly eight years of silicon evolution, yet their average benchmark scores sit almost exactly level: the Xeon averages 888 points to the Pentium's 887, a 0.1% gap. Despite that statistical tie, these processors serve completely different workloads. The Xeon X5550 wins all five head-to-head Cinebench tests, but by margins of just 1.2% to 1.4% — a razor-thin spread that reflects its 4-core/8-thread advantage against the Pentium's 2-core/4-thread design, with the newer architecture making up the deficit. The data suggests a clear split: the Xeon for legacy multi-threaded server tasks on a dead platform, the Pentium for modern, power-efficient single-thread and light desktop workloads.

Where Each One Wins

The Xeon X5550 takes every benchmark in the head-to-head comparison, but the wins are narrow. In Cinebench R15 multi-core, it scores 259 against the Pentium's 256 — a 1.2% margin. The R20 multi-core test shows 1083 versus 1068, a 1.4% lead. R23 multi-core follows the same pattern: 2580 to 2544, again 1.4%. Even single-core tests favor the Xeon, with R20 single-core at 152 versus 150 (1.3%) and R23 single-core at 364 versus 359 (1.4%). The Xeon's consistent edge across both multi-threaded and single-threaded workloads indicates that its 8 threads provide a genuine, if modest, throughput advantage in Cinebench's rendering workloads.

The Pentium G4560T's wins are not in raw Cinebench scores but in efficiency and platform modernity. It draws 35W TDP against the Xeon's 95W, a massive reduction that makes it suitable for compact, passively cooled or low-noise builds. It also supports DDR4 memory with 38.4 GB/s bandwidth on a dual-channel bus, whereas the Xeon is limited to DDR3 with triple-channel support. The Pentium includes Intel HD 610 integrated graphics, which the Xeon lacks entirely — a decisive feature for systems without a discrete GPU. Its production status is Active, while the Xeon is End-of-life, meaning availability and driver support favor the Pentium.

Neither processor dominates the other by meaningful performance margins. The Xeon's 5-0 benchmark sweep is real but narrow, and the Pentium counters with architectural advantages that no Cinebench score can capture.

Architecture Differences

The Xeon X5550 belongs to the Nehalem architecture, specifically the Gainestown codename, built on a 45 nm process with 731 million transistors on a 263 mm² die. It uses the Intel Socket 1366 platform and supports triple-channel DDR3 memory. Its cache hierarchy consists of 64 KB L1 per core, 256 KB L2 per core, and 8 MB of shared L3. It also supports ECC memory, reflecting its server/workstation heritage.

The Pentium G4560T is a Kaby Lake part on a 14 nm process, using Socket 1151. It supports dual-channel DDR4 memory with a rated bandwidth of 38.4 GB/s, features PCIe Gen 3 with 16 CPU lanes, and includes Intel HD 610 integrated graphics. Its cache is smaller: 64 KB L1 per core, 256 KB L2 per core, but only 3 MB of shared L3. It does not support ECC memory, and its market segment is Desktop rather than Server/Workstation.

The process node difference — 45 nm versus 14 nm — is the most fundamental architectural gap. Three generations of lithography improvements allow the Pentium to nearly match the Xeon's eight-thread performance using just four threads, while consuming less than a third of the power. The Xeon compensates with twice the cores and threads, plus a much larger L3 cache (8 MB versus 3 MB). The Pentium's higher base clock of 2.90 GHz versus the Xeon's 2.67 GHz (with 3.07 GHz boost) helps close the per-thread gap, but the Xeon's extra threads still edge ahead in every Cinebench test.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon X5550 has 4 cores and 8 threads, while the Intel Pentium G4560T has 2 cores and 4 threads.

Q: Does the Pentium G4560T have integrated graphics?

A: Yes, the Pentium G4560T includes Intel HD 610 integrated graphics. The Xeon X5550 has no integrated graphics.

Q: Which CPU supports ECC memory?

A: The Xeon X5550 supports ECC memory, reflecting its Server/Workstation market segment. The Pentium G4560T does not support ECC memory.

Q: What is the performance difference in multi-core benchmarks?

A: The Xeon X5550 leads by 1.2% in Cinebench R15 multi-core (259 vs 256), 1.4% in R20 multi-core (1083 vs 1068), and 1.4% in R23 multi-core (2580 vs 2544).

Q: Which processor is more power-efficient?

A: The Pentium G4560T has a 35W TDP compared to the Xeon X5550's 95W TDP, making it significantly more power-efficient.

Q: What memory types do these processors support?

A: The Xeon X5550 supports DDR3 with a triple-channel memory bus. The Pentium G4560T supports DDR4 with a dual-channel memory bus and 38.4 GB/s bandwidth.

Specification Differences

| Specification | Intel Xeon X5550 | Intel Pentium G4560T |

|---|---|---|

| Cores | 4 | 2 |

| Threads | 8 | 4 |

| Base Clock | 2.67 GHz | 2.90 GHz |

| Boost Clock | 3.07 GHz | None |

| TDP | 95W | 35W |

| Socket | Intel Socket 1366 | Intel Socket 1151 |

| Architecture | Nehalem | Kaby Lake |

| Codename | Gainestown | Kaby Lake |

| Process Node | 45 nm | 14 nm |

| Transistors | 731 million | Not specified |

| Die Size | 263 mm² | Not specified |

| L3 Cache | 8 MB (shared) | 3 MB (shared) |

| Memory Support | DDR3 | DDR4 |

| Memory Bus | Triple-channel | Dual-channel |

| Memory Bandwidth | Not specified | 38.4 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 2 | Gen 3, 16 Lanes (CPU only) |

| Integrated Graphics | None | Intel HD 610 |

| Market Segment | Server/Workstation | Desktop |

| Production Status | End-of-life | Active |

| Release Date | 2009-03-29 | 2017-01-02 |

| Part Number | SLBF5 | SR35T |

Head-to-Head Benchmarks

The Xeon X5550 wins every Cinebench test in the comparison, but the margins are consistently slim. The largest single gap is 1.4%, appearing in three tests: R20 multi-core (1083 vs 1068), R23 multi-core (2580 vs 2544), and R23 single-core (364 vs 359). The R15 multi-core test shows the smallest margin at 1.2% (259 vs 256), and R20 single-core sits at 1.3% (152 vs 150).

What these numbers reveal is that the Xeon's 8-thread capability provides a real but limited advantage over the Pentium's 4 threads. In Cinebench R15, the Xeon's 259 points against the Pentium's 256 means the extra threads contribute only 3 points. In R20, the gap widens to 15 points (1083 vs 1068), and in R23 it reaches 36 points (2580 vs 2544). The scaling suggests that as the workload becomes more demanding, the Xeon's additional threads gain slightly more traction — but the Pentium's newer architecture and higher base clock (2.90 GHz vs 2.67 GHz) keep it remarkably close.

Single-core results follow the same pattern. The Xeon leads R20 single-core by 2 points (152 vs 150) and R23 single-core by 5 points (364 vs 359), both around 1.3-1.4%. This is notable because the Pentium has no boost clock, running at a fixed 2.90 GHz, while the Xeon boosts from 2.67 GHz to 3.07 GHz. Despite the Xeon's higher peak frequency, the Pentium's Kaby Lake architecture nearly closes the per-core gap.

The broader benchmark picture supports this parity. The Xeon's average benchmark score is 888, the Pentium's is 887. Both sit at the 24th percentile of all CPUs. Their nearest rivals are identical: the Intel Core i3-6100 (888, 0% delta), AMD PRO A8-8650B (887, 0.2% delta for the Xeon), and Intel Core i7-860 (886, 0.2% delta). The Pentium's closest rival list mirrors the Xeon's, with the two processors appearing as each other's second-nearest competitor at a 0.1% delta.

The Verdict

The data supports a clear conclusion: choose the Intel Xeon X5550 if you need maximum multi-threaded throughput on a legacy platform, and choose the Intel Pentium G4560T for modern efficiency and integrated functionality.

The Xeon X5550 wins all five head-to-head benchmarks, but its advantages are marginal — no more than 1.4% in any test. Its 8 threads and 8 MB of L3 cache provide a genuine edge in Cinebench rendering workloads, and its ECC memory support and triple-channel DDR3 make it suitable for server or workstation tasks where data integrity and memory bandwidth matter. However, its 95W TDP, End-of-life production status, and 2009 release date (March 2009) mean it belongs in legacy systems, not new builds. The lack of integrated graphics forces a discrete GPU, and its Socket 1366 platform offers no upgrade path.

The Pentium G4560T, released in January 2017, is the more practical choice for most modern applications. Its 35W TDP is a fraction of the Xeon's power draw, its DDR4 memory support with 38.4 GB/s bandwidth is current, and its integrated Intel HD 610 graphics eliminate the need for a separate GPU. The 14 nm process node versus 45 nm represents a massive efficiency leap. Its performance deficit is small enough to be nearly negligible — 1.2% to 1.4% across the board — and its Active production status ensures ongoing availability.

For users processing heavily multi-threaded workloads on existing Socket 1366 hardware, the Xeon X5550 remains a capable performer. For anyone building new, the Pentium G4560T delivers comparable Cinebench scores with dramatically lower power consumption, modern memory support, and integrated graphics. The benchmark data shows a statistical tie in raw scores; the real differences lie in platform, efficiency, and feature support, where the Pentium clearly leads.