Intel Core i5-1345UE vs Intel Xeon E5-4650 v3 Comparison

The Intel Xeon E5-4650 v3 is an end-of-life, 12-core server processor built on the 22 nm Haswell-EP architecture, while the Intel Core i5-1345UE is an active, 10-core mobile chip on the 10 nm Raptor Lake-U platform. Despite the Xeon’s massive 30 MB of L3 cache and quad-channel DDR4 memory, the benchmark data shows the i5-1345UE winning every single head-to-head comparison, albeit by narrow margins. The Xeon carries a launch MSRP of $2838, whereas the i5 has no listed launch MSRP.

FAQ

Q: Which processor has more physical cores?

A: The Intel Xeon E5-4650 v3 has 12 cores and 24 threads, while the Intel Core i5-1345UE has 10 cores and 12 threads.

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

A: The i5-1345UE wins all three multi-core tests, but by only 1.3%. In Cinebench R23 multi-core, the i5 scores 9329 versus the Xeon’s 9212; in R20 multi-core, it’s 3918 versus 3869; and in R15 multi-core, it’s 940 versus 928.

Q: How do the single-core scores compare?

A: The i5-1345UE also leads every single-core test, with deltas ranging from -0.8% to -1.3%. The largest gap is in Cinebench R23 single-core, where the i5 scores 1317 against the Xeon’s 1300.

Q: What are the memory and expansion differences?

A: The Xeon E5-4650 v3 supports DDR4 memory over a quad-channel bus with 68.3 GB/s of bandwidth and ECC memory. The i5-1345UE supports both DDR4 and DDR5 over a dual-channel bus, has no ECC support, and offers no memory bandwidth figure in the data.

Q: Which chip has integrated graphics?

A: Only the Intel Core i5-1345UE includes integrated graphics, featuring Iris Xe Graphics 80EU. The Xeon E5-4650 v3 has no integrated graphics listed.

Q: How do their average benchmark scores and percentiles compare?

A: The i5-1345UE has an average benchmark score of 2698 and sits at the 50th percentile of all CPUs. The Xeon E5-4650 v3 has an average score of 2664, also at the 50th percentile.

The Verdict

The data points to a clear, though narrow, victory for the Intel Core i5-1345UE. It wins all six benchmark comparisons, with every multi-core and single-core delta sitting at exactly -1.3%, except for the R15 single-core test which shows a -0.8% delta. For anyone building a system today, the i5-1345UE is the only viable option between the two, as the Xeon is end-of-life and carries a $2838 launch MSRP. The Xeon’s 12 cores and 24 threads do not translate into a performance advantage in these Cinebench tests; the i5’s newer Raptor Lake architecture and higher boost clock of 4.60 GHz overcome the core-count deficit. The Xeon’s strengths lie in its server-oriented features—ECC memory, quad-channel bandwidth of 68.3 GB/s, and 40 PCIe Gen 3 lanes—but benchmark results indicate those do not help in the tested workloads. The i5-1345UE, with its active production status and integrated Iris Xe Graphics 80EU, is the sensible pick for mobile or compact systems. The Xeon remains relevant only in legacy server sockets where its specific feature set is required, but for raw Cinebench performance, the i5-1345UE is ahead in every metric.

Head-to-Head Benchmarks

The head-to-head results are remarkably consistent. The Intel Core i5-1345UE wins all six tests, but the margins are tight enough that the Xeon’s higher core count nearly compensates for its architectural age. In Cinebench R15 multi-core, the i5 scores 940 against the Xeon’s 928, a delta of -1.3%. The single-core R15 test shows the closest race: the i5 scores 132 versus the Xeon’s 131, a delta of only -0.8%. That 1-point gap is the smallest of the entire comparison.

Moving to Cinebench R20, the pattern holds. The i5-1345UE posts 3918 in multi-core, beating the Xeon’s 3869 by 1.3%. In single-core R20, the i5’s 553 edges out the Xeon’s 546, again by 1.3%. The margins remain identical in Cinebench R23: the i5’s multi-core score of 9329 tops the Xeon’s 9212, and the single-core score of 1317 beats 1300. Every multi-core delta is -1.3%, which suggests the performance gap scales uniformly across the Cinebench suite, regardless of whether the workload stresses one core or all of them.

The Xeon’s best showing is in R15 single-core, where it trails by just 0.8%. Its worst relative performance is also in single-core tests, where the i5’s 4.60 GHz boost clock likely provides the edge, but the absolute differences are small. For context, the Xeon’s nearest rivals include the Intel Core i7-9750HF with an average score of 2662 (delta 0.1%) and the Intel Core i7-9700T at 2668 (delta -0.1%). The i5-1345UE’s nearest rivals include the Intel Core i7-8700T at 2701 (delta -0.1%) and the Intel Xeon E5-2640 v3 at 2703 (delta -0.2%). Both chips sit near the 50th percentile of all CPUs, meaning they are mid-pack performers overall, but the i5’s average benchmark score of 2698 is 34 points higher than the Xeon’s 2664.

Specification Differences

The two processors differ across almost every major specification. The Xeon E5-4650 v3 uses 12 cores with 24 threads, while the i5-1345UE uses 10 cores with 12 threads. Base clocks diverge sharply: the Xeon runs at 2.10 GHz, whereas the i5’s base clock is listed as 1400.00 MHz, which is 1.40 GHz. Boost clocks tell a different story: the Xeon boosts to 2.80 GHz, while the i5 reaches 4.60 GHz. Thermal design power is a major differentiator, with the Xeon rated at 105 W and the i5 at just 15 W.

Sockets are incompatible: the Xeon uses Intel Socket 2011-3, while the i5 uses Intel BGA 1744. Memory support also splits the two: the Xeon supports DDR4 over a quad-channel bus with 68.3 GB/s bandwidth and ECC memory; the i5 supports both DDR4 and DDR5 over a dual-channel bus, without ECC, and has no listed bandwidth figure. PCIe connectivity differs as well, with the Xeon offering Gen 3 with 40 lanes (CPU only) versus the i5’s Gen 4 with 8 lanes (CPU only). The i5 includes integrated graphics—Iris Xe Graphics 80EU—while the Xeon has none. The Xeon’s launch MSRP is $2838; the i5 has no launch MSRP. Production status also differs, with the Xeon marked end-of-life and the i5 active.

Architecture Differences

The architectural gap is generational. The Xeon E5-4650 v3 is built on Intel’s 22 nm process node with 2,600 million transistors on a 356 mm² die, using the Haswell-EP architecture. The i5-1345UE is on the 10 nm process node using Raptor Lake-U architecture, with no transistor count or die size listed. The cache hierarchies are structured differently: the Xeon has 64 KB of L1 cache and 256 KB of L2 cache per core, plus 30 MB of shared L3 cache. The i5 has 80 KB of L1 and 1.25 MB of L2 per core, but only 12 MB of shared L3. This means the Xeon has more than double the L3 cache, yet it still loses in all benchmarks, indicating that the i5’s newer core design and higher clock speeds matter more than raw cache capacity.

The Xeon’s 22 nm process and larger die size reflect its server heritage, prioritizing many cores and high memory bandwidth. The i5’s smaller 10 nm process and 15 W TDP target efficiency and mobility. The Xeon’s generation is listed as "Xeon E5 (Haswell-EP)" with a release date of 2015-05-31, while the i5 is "Core i5 (Raptor Lake-U)" released on 2023-01-03. The foundry for both is Intel, but the node difference—22 nm versus 10 nm—explains much of the performance-per-watt disparity. The Xeon’s 30 MB L3 cache is a clear advantage for server workloads that reuse large datasets, but the benchmark suite shows the i5’s architecture compensates with higher single-core efficiency and a 4.60 GHz boost clock. The i5’s 80 KB L1 and 1.25 MB L2 per core are larger than the Xeon’s 64 KB and 256 KB, which likely helps in latency-sensitive tasks. The Xeon’s quad-channel memory and ECC support are absent on the i5, reinforcing the Xeon’s role in reliability-focused server environments, while the i5’s dual-channel DDR4/DDR5 support and integrated graphics target mainstream mobile computing.