Intel Core i5-4440S vs Intel Xeon W3580 Comparison

Head-to-Head Benchmarks

The recorded data shows a consistent and decisive pattern: the Intel Core i5-4440S wins every single benchmark in this comparison. Across five Cinebench tests, the i5-4440S takes all five, while the Xeon W3580 records zero wins. This is not a narrow margin either; the deltas are remarkably uniform, hovering around 20% in favor of the newer chip.

In Cinebench R15 multicore, the i5-4440S scores 375 against the Xeon's 311, a 20.6% advantage. The same 20.6% delta appears in Cinebench R20 multicore, where the i5-4440S posts 1566 versus 1298. The R23 multicore test repeats the pattern almost exactly: 3729 for the i5-4440S, 3092 for the Xeon, again a 20.6% gap. The consistency across these three multicore tests is striking; it suggests the performance difference is structural, not workload-specific.

Single-core results tell the same story. In Cinebench R20 single-core, the i5-4440S scores 220 while the Xeon W3580 manages 183, a 20.2% lead. Cinebench R23 single-core shows the i5-4440S at 526 against 436 for the Xeon, once more a 20.6% delta. The fact that the single-core margins so closely mirror the multicore margins is revealing. It implies the i5-4440S simply has a higher per-thread performance ceiling, and its four threads are each more capable than any of the Xeon's eight threads.

The average benchmark scores in the database reinforce this hierarchy. The i5-4440S carries an average benchmark score of 1078, placing it in the 30th percentile of all CPUs tracked. The Xeon W3580 averages 1064, sitting at the 29th percentile. The raw average difference is small, but the head-to-head deltas are what matter here, and those are unambiguously in favor of the i5-4440S.

Looking at the nearest rivals for each chip provides additional context. The i5-4440S is bracketed by the AMD A12-9800 (average score 1081, delta -0.2%), the Intel Pentium Gold G6505T (1082, -0.3%), the Intel Pentium Gold G6505 (1074, +0.4%), and the Intel Core i5-3335S (1083, -0.4%). These are all very close scores, meaning the i5-4440S sits in a tightly packed cluster of similarly performing CPUs. The Xeon W3580's nearest rivals include the Intel Core i3-9100HL (1065, -0.1%), Intel Core i5-2380P (1063, +0.1%), Intel Core i5-4570TE (1062, +0.2%), and AMD Opteron 4376 HE (1061, +0.3%). The Xeon is also in a tight cluster, but its cluster sits slightly below the i5-4440S's cluster.

FAQ

Q: Which processor wins more benchmarks in the head-to-head comparison?

A: The Intel Core i5-4440S wins all five recorded head-to-head benchmarks. The Xeon W3580 wins none. The wins cover Cinebench R15 multicore, R20 multicore, R20 single-core, R23 multicore, and R23 single-core.

Q: What is the largest performance gap between the two CPUs?

A: The largest delta is 20.6%, which appears in four tests: Cinebench R15 multicore, R20 multicore, R23 multicore, and R23 single-core. The single-core R20 test shows a slightly smaller delta of 20.2%.

Q: How do the average benchmark scores compare?

A: The i5-4440S has an average benchmark score of 1078, while the Xeon W3580 averages 1064. This places the i5-4440S in the 30th percentile of all CPUs, one point above the Xeon's 29th percentile.

Q: Does the Xeon W3580 have any advantage in thread count?

A: Yes, the Xeon W3580 has 8 threads versus 4 threads on the i5-4440S. However, the benchmark data shows this does not translate into a performance win. The i5-4440S still leads in every multicore test by roughly 20%.

Q: What do the nearest rival scores indicate about each CPU's competitive position?

A: The i5-4440S's nearest rivals (AMD A12-9800, Pentium Gold G6505T, Pentium Gold G6505, Core i5-3335S) all have average scores within 0.4% of its own. The Xeon W3580's rivals (Core i3-9100HL, Core i5-2380P, Core i5-4570TE, Opteron 4376 HE) are similarly close, within 0.3%. Both chips are competitive within their immediate peer groups, but the i5-4440S's peer group sits at a slightly higher performance level.

Q: Is there any benchmark where the Xeon W3580 comes close to the i5-4440S?

A: The closest result is in Cinebench R20 single-core, where the Xeon scores 183 versus 220 for the i5-4440S. That is still a 20.2% gap, so even the closest result is a substantial loss for the Xeon.

Architecture Differences

The two processors come from fundamentally different eras of Intel design. The i5-4440S is built on the Haswell architecture, a 22 nm process with 1,400 million transistors on a 177 mm² die. The Xeon W3580 uses the Nehalem architecture, specifically the Bloomfield codename, on a 45 nm process with 731 million transistors and a 263 mm² die. The node difference alone explains a great deal: 22 nm versus 45 nm means the i5-4440S packs nearly twice the transistors into a smaller physical area, which directly contributes to its higher efficiency and performance per clock.

Cache configurations also differ. Both have 64 KB of L1 per core and 256 KB of L2 per core, but the shared L3 cache is larger on the Xeon: 8 MB shared versus 6 MB shared on the i5-4440S. Despite having more L3 cache, the Xeon cannot overcome the architectural deficit. The Haswell design's superior instruction handling and memory subsystem appear to outweigh the raw cache size advantage.

Memory support shows another divergence. Both support DDR3, but the i5-4440S uses a dual-channel memory bus while the Xeon W3580 uses triple-channel. The Xeon's wider memory bus is a legacy workstation feature, but the recorded data indicates it does not compensate for the older core design. The i5-4440S also features integrated graphics in the form of Intel HD 4600, while the Xeon W3580 has no integrated graphics at all. PCIe generations differ as well: the i5-4440S supports Gen 3, the Xeon only Gen 2.

ECC memory support is a notable differentiator. The Xeon W3580 supports ECC memory, a hallmark of server and workstation parts, while the i5-4440S does not. This is a meaningful feature for reliability-focused workloads, even though it does not show up in the Cinebench scores. The market segments reflect this: the i5-4440S is a desktop part, while the Xeon W3580 is classified as a server/workstation processor.

Specification Differences

The core and thread counts differ: the i5-4440S has 4 cores and 4 threads, while the Xeon W3580 has 4 cores and 8 threads. This means the Xeon supports Hyper-Threading, effectively doubling its thread count, while the i5-4440S does not. Clock speeds favor the Xeon on paper: its base clock is 3.33 GHz with a boost of 3.60 GHz, versus 2.80 GHz base and 3.30 GHz boost for the i5-4440S. Despite lower clocks, the i5-4440S wins every benchmark, which speaks to the IPC (instructions per clock) advantage of the newer Haswell architecture.

Thermal design power is a major gap. The i5-4440S is rated at 65 watts TDP, while the Xeon W3580 draws 130 watts. That is exactly double the power envelope for a chip that loses by 20% in every test. The sockets are incompatible: the i5-4440S uses Intel Socket 1150, the Xeon W3580 uses Intel Socket 1366. Process nodes differ as noted: 22 nm for the i5-4440S, 45 nm for the Xeon. The i5-4440S has a smaller die (177 mm² vs 263 mm²) but more transistors (1,400 million vs 731 million).

Release dates are far apart. The i5-4440S was released on 2013-08-31, while the Xeon W3580 came out on 2009-08-08, a gap of roughly four years. The Xeon is marked as end-of-life in production status, while the i5-4440S has no such designation. Part numbers differ (SR14L for the i5-4440S, SLBET for the Xeon), and neither has a recorded launch MSRP in the database. Both have locked multipliers, so neither is intended for overclocking.

The Verdict

The data is unambiguous. The Intel Core i5-4440S outperforms the Intel Xeon W3580 in every recorded benchmark, with a consistent margin of about 20%. The i5-4440S achieves this with half the threads, lower clock speeds, less L3 cache, and half the TDP. The architectural leap from Nehalem to Haswell, combined with the process shrink from 45 nm to 22 nm, is the decisive factor. The Xeon's triple-channel memory and ECC support are workstation features, but they do not translate into Cinebench performance.

For anyone choosing between these two based on the recorded data, the i5-4440S is the clear performance pick. It wins all five head-to-head tests, has a higher average benchmark score (1078 vs 1064), and sits at a higher percentile (30th vs 29th). The Xeon W3580's only theoretical advantages are its 8 threads and ECC support, but the benchmarks show the 8 threads do not help in these workloads. The Xeon is also end-of-life, which may matter for long-term availability.

The verdict from the data: the i5-4440S is the faster processor in every measurable way within this comparison. The Xeon W3580's higher thread count and ECC capability are real features, but they are not reflected in any performance win.

Where Each One Wins

The Intel Core i5-4440S wins in every benchmark category recorded. That includes all multicore tests (Cinebench R15, R20, R23) and all single-core tests (R20, R23). Its wins are consistent at roughly 20.6% across the board. If the workload is Cinebench rendering, which is what these scores represent, the i5-4440S is the superior choice without exception.

The Xeon W3580 does not win any benchmark in this dataset. However, its specifications suggest contexts where it might still be relevant. It supports ECC memory, which the i5-4440S does not, making it potentially suitable for error-sensitive server or workstation tasks that require data integrity. It also has 8 threads, which could theoretically benefit workloads that scale well with thread count, even though Cinebench does not show such a benefit here. Its triple-channel memory bus is another legacy feature that could aid memory-bandwidth-heavy applications, though no benchmark data confirms this.

In practical terms, the i5-4440S is the pick for any performance-sensitive task represented by these benchmarks. The Xeon W3580's niche would be limited to scenarios where ECC support is mandatory, or where the existing Socket 1366 platform is already in place. The data does not support choosing the Xeon for raw speed. For that, the i5-4440S is the winner in every recorded test, and the margin is substantial enough to make the decision straightforward.