Intel Core i7-4500U vs Intel Xeon X3460 Comparison

The Intel Xeon X3460 and Intel Core i7-4500U represent two fundamentally different design goals from Intel, separated by nearly four years of architecture evolution. The X3460 is a Lynnfield-based server/workstation part from 2009, built on a 45 nm process, while the i7-4500U is a Haswell-ULT mobile processor from 2013 on a 22 nm node. They both land at the 23rd percentile of all CPUs in the database, with average benchmark scores of 866 and 859 respectively, making them remarkably close overall performers despite their different shapes. The data shows a clear pattern: the Xeon wins every single head-to-head benchmark, but the margin is consistent and relatively narrow, hovering around 19% across all tests.

Head-to-Head Benchmarks

The most striking result is the uniformity of the Xeon X3460's advantage. Across five Cinebench tests, the deltaPct never deviates far from 19%. In Cinebench R15 multicore, the Xeon scores 253 against the i7-4500U's 212, a 19.3% lead. That same pattern holds in Cinebench R20 multicore, where 1057 beats 887 by 19.2%. The R23 multicore test shows 2518 versus 2113, again a 19.2% gap. This consistency suggests the performance difference is structural rather than workload-specific.

Single-core results tell the same story. In Cinebench R20 single-core, the Xeon posts 149 against 125, a 19.2% margin. Cinebench R23 single-core shows 355 versus 298, a 19.1% lead. The i7-4500U never wins a single test in this comparison, but it also never gets blown out. The Xeon's advantage is real but capped at roughly one-fifth across the board.

What makes this interesting is the architectural gap. The i7-4500U has a newer Haswell core, a 22 nm process, and a much smaller die size of 118 mm² versus the Xeon's 296 mm². Yet the older, larger, more power-hungry Xeon consistently outpaces it. The Xeon's 4 cores and 8 threads give it a structural advantage over the i7's 2 cores and 4 threads, and that advantage shows up at every clock speed and workload level. The Xeon's base clock of 2.80 GHz and boost of 3.47 GHz also outpace the i7's 1800.00 MHz base and 3.00 GHz boost, though the i7's lower clocks are partly offset by its newer architecture.

When placed against their respective nearest rivals, both CPUs sit in a tight performance cluster. The Xeon X3460's nearest rival is the Intel Core i7-3540M, which scores 867 with a deltaPct of -0.1, meaning the Xeon is essentially tied with it. The Xeon W3520 is another close competitor at 862, just 0.5% behind the Xeon. The i7-4500U's nearest rival is the AMD A8-7650K at 860, a -0.1% delta, and the Intel Core i5-2500T at 856, which is 0.3% behind. Both CPUs are thus surrounded by similarly performing parts, but the Xeon edges out its mobile counterpart in every direct comparison.

The Verdict

The data is unambiguous: if you need raw compute performance, the Intel Xeon X3460 is the stronger processor. It wins all five head-to-head benchmarks with a consistent 19% margin, driven by its 4-core/8-thread configuration and higher clock speeds. The Xeon's 8 MB of shared L3 cache also doubles the i7-4500U's 4 MB, which helps in multi-threaded workloads that can exploit the larger pool of fast memory.

However, the i7-4500U is not without its own case. It consumes 15 watts of TDP versus the Xeon's 95 watts, a six-fold difference that makes the mobile part viable in compact systems and battery-powered devices. The i7 also packs integrated graphics in the form of Intel HD 4400, while the Xeon has none, so the i7 can run a basic display output without a discrete GPU. The i7's die size of 118 mm² is less than half the Xeon's 296 mm², and its 22 nm process is more modern than the Xeon's 45 nm, meaning it generates less heat and is easier to cool.

For a builder choosing between these two today, the decision hinges on the platform. The Xeon X3460 uses Intel Socket 1156, supports ECC memory, and targets server/workstation use. The i7-4500U uses Intel BGA 1168, is soldered down, and targets mobile designs. If you have a desktop motherboard that supports Socket 1156 and need ECC memory or maximum multi-threaded throughput, the Xeon is the clear choice. If you are building a low-power, compact system where integrated graphics and minimal cooling are priorities, the i7-4500U is the only practical option despite its lower scores.

FAQ

Q: Which CPU has better multi-core performance?

A: The Intel Xeon X3460 wins in every multi-core test. In Cinebench R23 multicore, it scores 2518 versus the i7-4500U's 2113, a 19.2% advantage. The Xeon's 4 cores and 8 threads outperform the i7's 2 cores and 4 threads in all scenarios.

Q: Is the i7-4500U ever faster than the Xeon X3460?

A: No. In the head-to-head benchmark data, the Xeon wins all five tests, and the i7-4500U has zero wins. The closest margin is 19.1% in Cinebench R23 single-core, still favoring the Xeon.

Q: What is the power consumption difference?

A: The i7-4500U has a TDP of 15 watts, while the Xeon X3460 has a TDP of 95 watts. The i7 uses significantly less power, making it suitable for mobile and low-power applications.

Q: Do these CPUs support ECC memory?

A: Yes, the Xeon X3460 supports ECC memory. The i7-4500U does not support ECC, as noted in its specifications.

Q: Which CPU has integrated graphics?

A: Only the i7-4500U has integrated graphics, specifically Intel HD 4400. The Xeon X3460 has no integrated graphics, requiring a discrete GPU for display output.

Q: How do these CPUs compare to their nearest rivals?

A: The Xeon X3460 has an average benchmark score of 866, placing it within 0.5% of the Xeon W3520 and 0.1% behind the Core i7-3540M. The i7-4500U scores 859, putting it 0.1% behind the AMD A8-7650K and 0.3% ahead of the Core i5-2500T.

Specification Differences

The two processors differ across nearly every specification field. The Xeon X3460 has 4 cores and 8 threads, while the i7-4500U has 2 cores and 4 threads. Base clocks are 2.80 GHz for the Xeon and 1800.00 MHz for the i7, with boost clocks of 3.47 GHz and 3.00 GHz respectively. TDP is drastically different: 95 watts for the Xeon versus 15 watts for the i7.

Socket types are incompatible: the Xeon uses Intel Socket 1156, while the i7 uses Intel BGA 1168. The Xeon supports dual-channel DDR3 memory with a bandwidth of 21.3 GB/s and ECC memory, whereas the i7's memory bus and bandwidth are not specified, and it lacks ECC support. The Xeon has PCIe Gen 2 with 16 lanes (CPU only), while the i7 has no PCIe specification listed. The Xeon has no integrated graphics, but the i7 includes Intel HD 4400. The Xeon's market segment is Server/Workstation, while the i7 is Mobile. Release dates also differ: the Xeon launched on 2009-09-07, and the i7 on 2013-06-03. The Xeon has a launch MSRP of $316, while the i7 has no listed launch MSRP. Both are multiplier-unlocked false.

Architecture Differences

The architectural divide is significant. The Xeon X3460 uses the Nehalem architecture with the Lynnfield codename, built on a 45 nm process at Intel's foundry. It packs 774 million transistors onto a 296 mm² die. Its cache hierarchy is 64 KB of L1 per core, 256 KB of L2 per core, and a shared 8 MB L3 cache. The i7-4500U uses the Haswell architecture with the Haswell-ULT codename, built on a 22 nm process. It contains 1,300 million transistors on a smaller 118 mm² die. Its cache is 64 KB L1 per core, 256 KB L2 per core, and a shared 4 MB L3 cache, half the Xeon's L3.

These differences reflect the generational leap. The 22 nm process allows the i7 to pack 1,300 million transistors into less than half the die area, indicating a denser design. The Haswell core is newer and more power-efficient, which is why the i7 can achieve a much lower TDP of 15 watts despite having fewer cores and threads. The Xeon's larger 8 MB L3 cache and 4-core/8-thread configuration are classic server features, while the i7's integrated HD 4400 graphics and smaller cache target mobile efficiency. The foundry is Intel for both, but the process node difference is the key architectural separator.

Where Each One Wins

The Intel Xeon X3460 wins in every compute benchmark measured. Its 19.2% lead in Cinebench R20 multicore and 19.3% lead in R15 multicore make it the stronger choice for multi-threaded rendering, encoding, and workstation tasks. Its 8 MB L3 cache and 8 threads allow it to handle parallel workloads with more agility. The Xeon's ECC memory support and server/workstation market segment also make it suitable for reliability-focused applications like file servers or compute nodes where data integrity is paramount. Its Socket 1156 platform, while older, offers a desktop form factor with upgrade potential.

The Intel Core i7-4500U wins in power efficiency and integration. Its 15-watt TDP means it can run in thin-and-light laptops or fanless mini-PCs where the Xeon's 95-watt TDP would be impossible to cool. The integrated Intel HD 4400 graphics eliminates the need for a discrete GPU, reducing system cost and complexity for basic display tasks. The i7's 22 nm process and smaller die size of 118 mm² make it a superior choice for battery-powered or thermally constrained environments. Its BGA 1168 socket is soldered, which is a disadvantage for upgradability, but it enables a compact footprint. For users who prioritize portability, silent operation, or low energy consumption over raw compute, the i7-4500U is the practical pick, even though the data shows the Xeon is faster in every test.