Intel Core i5-1230U vs Intel Xeon Gold 6348 Comparison

# Intel Xeon Gold 6348 vs Intel Core i5-1230U

The Intel Xeon Gold 6348 and Intel Core i5-1230U could hardly be more different in purpose. The Xeon is a 28-core, 56-thread server/workstation processor built for sustained multi-threaded workloads, while the i5-1230U is a 10-core, 12-thread mobile chip designed for power efficiency in thin-and-light laptops. The benchmark data shows a complete sweep: the Xeon Gold 6348 wins all 6 head-to-head comparisons, with margins ranging from 235.1% to 901%. Yet the i5-1230U holds its own in aggregate performance rankings, with both CPUs sitting at the 67th percentile among all processors. This is a tale of two entirely different design philosophies, and the data supports each for its intended role.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon Gold 6348 has 28 cores and 56 threads. The Intel Core i5-1230U has 10 cores and 12 threads. That is a 2.8x core advantage and a 4.7x thread advantage for the Xeon.

Q: What is the single-core performance difference?

A: The Xeon Gold 6348 wins every single-core Cinebench test. In Cinebench R23 single-core, it scores 6221 versus 1310 for the i5-1230U, a 374.9% advantage. In R15 single-core, the Xeon scores 626 versus 186.8, a 235.1% lead.

Q: Which processor has a higher boost clock?

A: The Intel Core i5-1230U has a higher boost clock at 4.40 GHz. The Xeon Gold 6348 boosts to 3.50 GHz. Despite the lower boost frequency, the Xeon still wins all single-core benchmarks by a wide margin.

Q: What memory configurations do these CPUs support?

A: The Xeon Gold 6348 supports DDR4 memory over an eight-channel bus with 204.8 GB/s of bandwidth and ECC support. The i5-1230U supports both DDR4 and DDR5 over a dual-channel bus with no ECC support.

Q: Do these processors have integrated graphics?

A: The Intel Core i5-1230U includes Iris Xe 80EU integrated graphics. The Xeon Gold 6348 has no integrated graphics listed in its specifications.

Q: How do their aggregate benchmark scores compare?

A: The Xeon Gold 6348 has an average benchmark score of 12746. The i5-1230U has an average benchmark score of 12559. That is a difference of roughly 1.5%, placing both at the 67th percentile of all CPUs.

Architecture Differences

The two processors come from different architectural families separated by a generation. The Xeon Gold 6348 uses Ice Lake-SP architecture, built on Intel's 10 nm process. It is a 28-core, 56-thread design with a base clock of 2.60 GHz and a boost clock of 3.50 GHz. The i5-1230U uses Alder Lake-U architecture, also on a 10 nm process, but with a hybrid core design that delivers 10 cores and 12 threads. Its base clock is listed at 1000.00 MHz, with a boost clock of 4.40 GHz.

Cache layouts differ substantially. The Xeon Gold 6348 has 64 KB of L1 cache per core, 1 MB of L2 per core, and 42 MB of shared L3 cache. The i5-1230U has 80 KB of L1 per core, 1.25 MB of L2 per core, and only 12 MB of shared L3. That means the Xeon has 3.5x more L3 cache, which matters for large working sets in server workloads.

Memory architecture is another major divergence. The Xeon supports DDR4 over an eight-channel bus, delivering 204.8 GB/s of memory bandwidth with ECC support. The i5-1230U supports both DDR4 and DDR5 over a dual-channel bus, but its memory bandwidth is not specified in the data. The Xeon also offers PCIe Gen 4 with 64 lanes from the CPU, while the i5-1230U has PCIe Gen 4 without a lane count specified. The Xeon's socket is Intel Socket 4189, while the i5-1230U uses Intel BGA 1781, reflecting the former's socketed server design and the latter's soldered mobile implementation.

Power envelopes could not be more different. The Xeon Gold 6348 has a TDP of 235 watts, while the i5-1230U sips just 9 watts. That 26x difference in thermal design power explains the i5-1230U's suitability for fanless or low-power mobile designs. The Xeon, by contrast, requires robust server-grade cooling and power delivery. Neither processor has an unlocked multiplier.

Where Each One Wins

The data paints a clear picture: the Xeon Gold 6348 wins every single benchmark in the head-to-head comparison. That includes all six Cinebench tests, covering both single-core and multicore workloads. The biggest win for the Xeon is in Cinebench R23 multicore, where it scores 44066 versus 4402 for the i5-1230U, a 901% advantage. The smallest win is in Cinebench R15 single-core, where the Xeon leads by 235.1%.

For the i5-1230U, there are no benchmark wins in this comparison. However, its aggregate performance tells a different story. With an average benchmark score of 12559, it sits just 1.5% behind the Xeon Gold 6348's 12746. That is remarkable given the massive core count disadvantage. The i5-1230U's nearest rivals include the AMD EPYC 9174F, Intel Core i3-1215U, Intel Atom x7809C, and Intel Core i3-10105F, with deltas ranging from 0.2% to -0.7%. This suggests the i5-1230U delivers competitive average performance in its own right, likely due to its high boost clock of 4.40 GHz and efficient Alder Lake architecture.

The Xeon Gold 6348's nearest rivals include the Intel Core i5-8400, AMD EPYC 7502, AMD Ryzen Threadripper 3990X, and Intel Core i3-1210U, with deltas of -0.2%, 0.3%, -0.3%, and -0.4% respectively. This placement among desktop and server processors highlights the Xeon's strong aggregate showing despite its age.

Specification Differences

The following specifications differ between the two processors:

• Cores: 28 (Xeon) vs 10 (i5-1230U)
• Threads: 56 vs 12
• Base Clock: 2.60 GHz vs 1000.00 MHz
• Boost Clock: 3.50 GHz vs 4.40 GHz
• TDP: 235 W vs 9 W
• Socket: Intel Socket 4189 vs Intel BGA 1781
• Architecture: Ice Lake vs Alder Lake
• Codename: Ice Lake-SP vs Alder Lake-U
• Generation: Xeon Gold (Ice Lake-SP) vs Core i5 (Alder Lake-U)
• L1 Cache: 64 KB (per core) vs 80 KB (per core)
• L2 Cache: 1 MB (per core) vs 1.25 MB (per core)
• L3 Cache: 42 MB (shared) vs 12 MB (shared)
• Memory Support: DDR4 vs DDR4, DDR5
• Memory Bus: Eight-channel vs Dual-channel
• Memory Bandwidth: 204.8 GB/s vs not specified
• ECC Memory: Yes vs No
• PCIe: Gen 4, 64 Lanes (CPU only) vs Gen 4
• Integrated Graphics: None vs Iris Xe 80EU
• Market Segment: Server/Workstation vs Mobile
• Release Date: 2021-04-05 vs 2022-02-22
• Part Number: SRKHPCD8068904572204 vs not specified

Both CPUs share the same 10 nm process node and are manufactured by Intel. Neither has an unlocked multiplier. Both have active production status.

Head-to-Head Benchmarks

The Cinebench suite reveals the scale of the performance gap. In Cinebench R15 multicore, the Xeon Gold 6348 scores 4441 against 514 for the i5-1230U, a 764% delta. That is over 8.6x the multicore performance in the older R15 test. In Cinebench R20 multicore, the Xeon scores 18507 versus 3903, a 374.2% advantage. The R23 multicore test shows the largest gap: 44066 versus 4402, a 901% delta. That means the Xeon delivers roughly 10x the multicore rendering performance of the i5-1230U in R23.

Single-core results are less lopsided but still heavily favor the Xeon. In Cinebench R15 single-core, the Xeon scores 626 versus 186.8, a 235.1% lead. In R20 single-core, it scores 2612 versus 550, a 374.9% advantage. The R23 single-core test shows the same 374.9% delta, with the Xeon at 6221 and the i5-1230U at 1310. Interestingly, the i5-1230U's boost clock is 4.40 GHz, nearly 1 GHz higher than the Xeon's 3.50 GHz boost, yet the Xeon still wins single-core by a wide margin. This points to architectural efficiency differences in the Ice Lake-SP core design versus the Alder Lake-U hybrid design, at least as measured by Cinebench.

The i5-1230U does have additional benchmarks beyond the Cinebench suite, including Geekbench and PassMark tests. Its Geekbench multicore score is 4875 and single-core is 1699. PassMark results include a multithread score of 10881, single-thread score of 2712, integer math at 38401, floating point math at 25340, and data compression at 114042. However, since the Xeon Gold 6348 has no corresponding scores in these tests, they cannot be used for direct comparison. The head-to-head data only includes the six Cinebench tests, and the Xeon wins all of them.

The Verdict

The data is unambiguous: the Intel Xeon Gold 6348 outperforms the Intel Core i5-1230U in every measured benchmark. For any workload that scales with core count or raw throughput, the Xeon is the clear choice. Its 28 cores, 56 threads, 42 MB of L3 cache, eight-channel DDR4 memory with 204.8 GB/s bandwidth, and ECC support make it a server/workstation part through and through. The 901% lead in Cinebench R23 multicore is the headline number — the Xeon is an order of magnitude faster in heavily threaded rendering workloads.

The i5-1230U, however, is not without merit. Its 9-watt TDP makes it suitable for ultra-portable devices where battery life and thermals matter more than raw performance. Its 4.40 GHz boost clock and modern Alder Lake architecture enable respectable single-threaded responsiveness for everyday tasks. The integrated Iris Xe 80EU graphics eliminate the need for a discrete GPU in basic systems. And its aggregate benchmark score of 12559 is only about 1.5% behind the Xeon's 12746, despite the massive core count disadvantage.

Who should pick which? The data supports the Xeon Gold 6348 for server rooms, data centers, and workstation builds that run multi-threaded workloads such as rendering, virtualization, or scientific computing. The i5-1230U suits thin-and-light laptops, fanless designs, and mobile workstations where power draw is the primary constraint. If you need raw compute, the Xeon wins outright. If you need a low-power mobile chip with integrated graphics, the i5-1230U is the only sensible option between these two. There is no scenario where the benchmark data suggests choosing the i5-1230U for performance reasons — but its existence is justified by its dramatically lower 9-watt power envelope and mobile form factor. The Xeon Gold 6348 wins every benchmark, but the i5-1230U wins the efficiency argument by a similar margin.