Intel Core i5-3320M vs Intel Xeon X3440 Comparison

The Intel Xeon X3440 and Intel Core i5-3320M represent two very different design philosophies from Intel, separated by nearly three years of architectural evolution. The Xeon is a quad-core server part built for sustained throughput on the now-legacy LGA1156 platform, while the i5-3320M is a dual-core mobile processor focused on efficiency and portability. Despite their divergent roles, benchmark data shows they land in remarkably similar performance territory, with the older, larger Xeon holding a narrow but consistent edge across every Cinebench test recorded.

Head-to-Head Benchmarks

The benchmark results are strikingly one-sided. The Xeon X3440 wins all five head-to-head comparisons, though the margins are consistently slim, ranging from 4.8% to 5.3%. In the Cinebench R15 multicore test, the Xeon scores 238 against the i5-3320M's 227, a 4.8% advantage. That gap widens only slightly in Cinebench R20 multicore, where the Xeon posts 994 versus 948, a 4.9% delta.

The single-core results tell a similar story. In Cinebench R20 single-core, the Xeon leads 140 to 133, a 5.3% margin — the largest of any test. The R23 single-core run shows the Xeon ahead at 334 versus 318, a 5.0% difference. Interestingly, the Xeon's age and lower boost clock do not prevent it from winning these single-threaded tests, which is notable given that the i5-3320M has a higher boost clock of 3.30 GHz compared to the Xeon's 2.93 GHz.

The multicore results are particularly telling. The Xeon's 4-core/8-thread configuration gives it a structural advantage over the i5-3320M's 2-core/4-thread design, yet the margin remains under 5%. This suggests that the i5's newer Ivy Bridge architecture and higher clock speeds partially compensate for having half the physical cores. The R23 multicore scores — 2368 for the Xeon and 2258 for the i5 — show the Xeon maintaining its lead even in a modern, heavily threaded workload.

What is absent from the data is any benchmark where the i5-3320M wins. The winsA count sits at 5, with winsB at 0. This does not mean the i5 is without merit — its Geekbench scores (1146 multicore, 589 single-core) are not directly compared here — but within the Cinebench suite, the Xeon is uniformly ahead.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Xeon X3440 averages 815 across all benchmarks, while the i5-3320M averages 803. This places the Xeon 1.5% higher overall, a small but measurable gap.

Q: How does the Xeon X3440 compare to its nearest rivals?

A: The Xeon's average score of 815 puts it within 0.7% of the Intel Xeon E5540 (820), essentially tied with the Intel Core i5-L16G7 (816), and slightly ahead of the Intel Core 2 Extreme QX9775 and Intel Core i7-5550U, both at 813.

Q: What is the i5-3320M's position relative to other CPUs?

A: The i5-3320M's average of 803 places it just below the AMD Ryzen 3 2200U (805) and just above the AMD A10-7700K (801), the Intel Xeon E5530 (801), and the Intel Pentium Silver J5040 (801). Its percentile ranking is 22nd, identical to the Xeon X3440.

Q: Does the i5-3320M have integrated graphics?

A: Yes, the i5-3320M includes Intel HD 4000 integrated graphics. The Xeon X3440 has no integrated graphics, which is typical for a server-oriented part.

Q: Which processor supports ECC memory?

A: The Xeon X3440 supports ECC memory, while the i5-3320M does not. This is a key differentiator for reliability-focused server workloads.

Q: What is the release date difference between the two?

A: The Xeon X3440 was released on September 7, 2009, while the i5-3320M arrived on May 31, 2012 — a gap of roughly two years and nine months.

Architecture Differences

The architectural gap between these two parts is substantial. The Xeon X3440 uses the Nehalem architecture on the Lynnfield codename, fabricated on Intel's 45 nm process. It packs 774 million transistors onto a 296 mm² die. The i5-3320M, by contrast, uses the Ivy Bridge architecture, built on a 22 nm process with a much smaller 118 mm² die. This process shrink is the primary reason the i5 can achieve its efficiency numbers.

Core topology differs fundamentally. The Xeon has 4 physical cores with Hyper-Threading, yielding 8 threads. The i5-3320M has 2 physical cores with Hyper-Threading, yielding 4 threads. Cache hierarchies reflect this: the Xeon carries 8 MB of shared L3 cache, while the i5 has only 3 MB of shared L3. Both share the same per-core L1 (64 KB) and L2 (256 KB) allocations.

Memory architecture also diverges. The Xeon supports DDR3 with dual-channel memory and a rated bandwidth of 21.3 GB/s. The i5-3320M also uses dual-channel DDR3 but its memory bandwidth is not listed in the available data. ECC support is exclusive to the Xeon, reinforcing its server pedigree. PCIe connectivity is only specified for the Xeon, which provides Gen 2 with 16 CPU-only lanes.

The socket situation is completely different. The Xeon uses Intel Socket 1156 (LGA1156), while the i5-3320M is soldered to Intel BGA 1023 (a laptop-style socket). This alone determines upgrade paths: the Xeon can be swapped on a desktop board, while the i5 is effectively permanent in its mobile platform.

Specification Differences

The specifications show a clear split between a high-power desktop/server part and a low-power mobile part. The Xeon X3440 has a TDP of 95 watts, while the i5-3320M draws just 35 watts — a 60-watt difference that makes the i5 more suitable for thin laptops and the Xeon better for desktops with adequate cooling.

Clock speeds tell a nuanced story. The Xeon has a base clock of 2.53 GHz and a boost clock of 2.93 GHz. The i5-3320M has a higher base clock of 2.60 GHz and a significantly higher boost clock of 3.30 GHz. Despite the i5's clock advantage, the Xeon wins all Cinebench tests, indicating that the extra cores and larger cache outweigh the frequency deficit.

The core and thread counts differ as expected: 4 cores/8 threads for the Xeon versus 2 cores/4 threads for the i5. L3 cache is 8 MB versus 3 MB. Memory bandwidth is listed only for the Xeon at 21.3 GB/s. ECC memory support is present on the Xeon but absent on the i5. Integrated graphics appear only on the i5 (Intel HD 4000); the Xeon has none.

The manufacturing details differ significantly. The Xeon uses a 45 nm process with 774 million transistors on a 296 mm² die. The i5 uses a 22 nm process with no transistor count listed and a 118 mm² die. The release dates are September 7, 2009, for the Xeon and May 31, 2012, for the i5.

The Xeon has a launch MSRP of $215; the i5-3320M has no launch MSRP listed. The Xeon's production status is end-of-life, while the i5's production status is not specified. Both have locked multipliers.

Where Each One Wins

The Xeon X3440 wins in raw compute throughput across all tested Cinebench workloads. Its 4-core/8-thread arrangement with 8 MB of L3 cache makes it the stronger choice for multithreaded rendering, data processing, or any workload that scales with core count. The 4.8% to 4.9% multicore margins in R15, R20, and R23 are consistent, suggesting that the Xeon's advantage is stable across different Cinebench versions. Its ECC memory support and server market segment make it suited for budget workstations or home servers where data integrity matters more than energy consumption. The 95-watt TDP is manageable in a desktop chassis with a capable air cooler, and the LGA1156 socket offers upgrade flexibility.

The i5-3320M wins in efficiency and mobility. Its 35-watt TDP makes it ideal for laptops and compact systems where heat dissipation and battery life are paramount. The higher boost clock of 3.30 GHz provides snappy single-threaded responsiveness for everyday tasks like web browsing, office productivity, and light media playback. While it loses to the Xeon in every Cinebench test, the margins are small — under 5.3% — which means the performance difference is nearly imperceptible in real-world use. The integrated Intel HD 4000 graphics eliminate the need for a discrete GPU in basic systems, reducing cost and power draw. The i5's 22 nm process gives it a significant efficiency advantage: it delivers roughly 95% of the Xeon's multicore performance at less than 37% of the power draw.

For users who prioritize raw compute and server features like ECC memory, the Xeon X3440 is the clear winner. For those who need a low-power mobile processor with integrated graphics and adequate performance for daily use, the i5-3320M is the logical choice. The data shows two processors that achieve similar performance through different means: the Xeon through more cores and cache, the i5 through a newer architecture and higher clocks. Both sit at the 22nd percentile among all CPUs, indicating that they are entry-level performers in the modern landscape, but they serve distinctly different markets with equal competence.