Intel Core i5-2310 vs Intel Xeon W3580 Comparison

Where Each One Wins

The benchmark data is unusually one-sided here. The Intel Core i5-2310 wins all five recorded head-to-head comparisons, though the margins are consistently narrow. In the Cinebench R15 multicore test, the i5-2310 scores 314 against the Xeon W3580's 311, a 1% lead. The R20 multicore test shows a 1309 versus 1298 result, good for a 0.8% advantage. The R23 multicore test follows the same pattern, with the i5-2310 at 3118 and the Xeon at 3092, again 0.8% ahead.

Single-core results are similarly tight. The R20 single-core test gives the i5-2310 a 184 to 183 win, a 0.5% margin. The R23 single-core test shows 440 versus 436, a 0.9% edge for the i5-2310. Every recorded benchmark lands in the same direction, meaning the i5-2310 holds a slight but consistent lead across both multi-threaded and single-threaded workloads.

The Xeon W3580 does not take a single win in the database. However, its performance is close enough that in real-world use the difference would often be lost in run-to-run variance. The data indicates a near-tie in raw throughput, with the i5-2310 holding a marginal but repeatable advantage. For users deciding between these two, the i5-2310 is the faster part in every measured scenario, but the magnitude of that advantage is small, around 0.5% to 1% depending on the test.

Architecture Differences

These two processors represent different generations and design philosophies from Intel. The Core i5-2310 is based on the Sandy Bridge architecture, built on a 32 nm process node. It packs 1,160 million transistors into a 216 mm² die. The Xeon W3580 uses the older Nehalem architecture, codenamed Bloomfield, on a 45 nm process. It contains 731 million transistors spread across a larger 263 mm² die. The newer process node allows the i5-2310 to fit more transistors into a smaller physical area, which is a major factor in its efficiency and performance parity despite lower clock speeds.

Thread counts differ. The i5-2310 offers 4 cores and 4 threads, with no simultaneous multithreading. The Xeon W3580 also has 4 cores but doubles the thread count to 8 through Hyper-Threading. This means the Xeon can handle more concurrent software threads, yet it still loses in multi-threaded benchmarks, an indication that the newer architecture's per-core efficiency outweighs the extra logical threads in these Cinebench workloads.

Clock speeds favor the Xeon. Its base clock is 3.33 GHz with a boost clock of 3.60 GHz. The i5-2310 runs at 2.90 GHz base and 3.20 GHz boost. Despite the lower frequencies, the i5-2310 still manages to win all tests, which shows how much architectural progress was made between Nehalem and Sandy Bridge. The newer design extracts more instructions per clock, making raw frequency less decisive.

Cache layouts differ. Both have 64 KB of L1 cache per core and 256 KB of L2 per core, but the shared L3 cache is larger on the Xeon: 8 MB versus 6 MB on the i5-2310. The Xeon's extra L3 capacity does not translate into a benchmark victory, which suggests the i5-2310's memory subsystem and prefetchers are more effective despite less shared cache.

Memory support diverges significantly. The i5-2310 runs dual-channel DDR3, while the Xeon W3580 runs triple-channel DDR3. The Xeon also supports ECC memory, making it suitable for error-sensitive workstation tasks. The i5-2310 has no ECC support. The Xeon is a server/workstation part, the i5-2310 is a desktop part. The Xeon has no integrated graphics, whereas the i5-2310 includes Intel HD 2000. PCIe generation also differs: the i5-2310 supports Gen 3 with 16 lanes (CPU only), while the Xeon offers Gen 2.

Head-to-Head Benchmarks

The most lopsided result is the Cinebench R15 multicore test, where the i5-2310 leads by a full 1.0%. That is the largest delta in the entire set. Scores are 314 versus 311, a difference of 3 points. This is the only test where the margin reaches the 1% mark.

The R23 single-core test shows the second-highest delta at 0.9%. The i5-2310 scores 440, the Xeon scores 436. This is particularly notable because the Xeon runs at a much higher boost clock of 3.60 GHz, yet still trails the slower-clocked i5-2310 in single-threaded work. The extra frequency cannot overcome the architectural gap.

The R20 multicore test results in a 0.8% delta, with scores of 1309 and 1298. The R23 multicore test also shows a 0.8% delta (3118 versus 3092). The R20 single-core test is the closest, a 0.5% delta, with 184 points for the i5-2310 and 183 for the Xeon. This is the smallest edge in the comparison.

Across the entire test suite, the i5-2310 wins every scenario. The Xeon's additional threads and higher clocks are not enough to overcome the per-core efficiency of Sandy Bridge. In both single-core and multi-core results, the newer architecture delivers a measurable, if modest, performance gain. The data does not show any scenario where the Xeon's triple-channel memory or larger L3 cache provides an advantage in these workloads.

FAQ

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

The Intel Core i5-2310 wins all multi-core tests. It scores 314 in Cinebench R15, 1309 in R20, and 3118 in R23, while the Xeon W3580 scores 311, 1298, and 3092 respectively. The i5-2310 is 0.8% to 1.0% ahead.

Q: Does the Xeon's higher clock speed make it better for single-threaded work?

No. Despite the Xeon's 3.33 GHz base and 3.60 GHz boost clocks, the i5-2310 at 2.90 GHz base and 3.20 GHz boost still wins the single-core tests. The i5-2310 scores 184 in R20 single-core and 440 in R23 single-core, versus 183 and 436 for the Xeon.

Q: Does the Xeon W3580 support ECC memory?

Yes. The Xeon W3580 has ECC memory support and uses triple-channel DDR3. The Core i5-2310 does not support ECC and uses dual-channel DDR3.

Q: Which CPU has more threads?

The Xeon W3580 has 8 threads from its 4 cores, using Hyper-Threading. The i5-2310 has 4 threads from 4 cores, with no Hyper-Threading.

Q: Is the better process node the reason for the i5-2310's performance?

The data suggests so. The i5-2310 is built on a 32 nm process with 1,160 million transistors on a 216 mm² die. The Xeon W3580 uses a 45 nm process with 731 million transistors on a 263 mm² die. The newer node yields better performance per clock and efficiency, despite lower clocks and fewer threads.

Q: Which has a larger L3 cache?

The Xeon W3580 has 8 MB shared L3 cache, while the i5-2310 has 6 MB. Despite this disadvantage, the i5-2310 still wins all benchmarks, implying the Xeon's larger cache does not translate into a performance lead here.

Specification Differences

| Specification | Intel Core i5-2310 | Intel Xeon W3580 |

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

| Cores / Threads | 4 / 4 | 4 / 8 |

| Base Clock | 2.90 GHz | 3.33 GHz |

| Boost Clock | 3.20 GHz | 3.60 GHz |

| TDP | 95 W | 130 W |

| Socket | Intel Socket 1155 | Intel Socket 1366 |

| Architecture | Sandy Bridge | Nehalem (Bloomfield) |

| Process Node | 32 nm | 45 nm |

| Transistors | 1,160 million | 731 million |

| Die Size | 216 mm² | 263 mm² |

| L3 Cache | 6 MB (shared) | 8 MB (shared) |

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

| ECC Memory | No | Yes |

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

| Integrated Graphics | Intel HD 2000 | None |

| Market Segment | Desktop | Server/Workstation |

| Part Number | SR02K | SLBET |

The Verdict

From the recorded data, the Intel Core i5-2310 is the better processor in every measured test. It holds a 0.5% to 1.0% lead over the Xeon W3580 across Cinebench R15, R20, and R23, in both single-core and multi-core workloads. The scores are close enough that most users will not feel a big difference, but the direction is clear: the i5-2310 is faster in all cases.

The i5-2310 achieves this despite having fewer threads (4 versus 8), a lower base clock (2.90 GHz versus 3.33 GHz), a lower boost clock (3.20 GHz versus 3.60 GHz), and a smaller L3 cache (6 MB versus 8 MB). The advantage comes from its Sandy Bridge architecture on a 32 nm process, which is more efficient than the Xeon's Nehalem on 45 nm. It also has a much lower TDP of 95 W against the Xeon's 130 W, making it a more power-efficient choice.

The Xeon W3580 is not without its merits. It supports ECC memory, uses triple-channel DDR3, and is a server/workstation part. For a system that requires ECC or a triple-channel memory setup, the Xeon is the only option among these two. Its larger L3 cache and higher clocks are real features, but they do not yield a win in any recorded benchmark.

Users should pick the Intel Core i5-2310 for any pure performance scenario, especially if the integrated graphics of the HD 2000 and the modern PCIe Gen 3 interface are useful. The Xeon W3580 makes sense only for platform-specific needs like ECC memory or a Socket 1366 workstation board where those features matter more than the slight benchmark gap. In terms of raw computing performance, the newer desktop part outperforms the older workstation chip across the board.