Intel Core i7-4790K vs Intel Xeon Bronze 3408U Comparison

The Intel Xeon Bronze 3408U and the Intel Core i7-4790K represent two very different design philosophies: one is a modern, low-power server processor built for scalability and data integrity, while the other is a legacy, high-frequency desktop part from a previous era. The benchmark data shows a clear split, with the Xeon dominating in compute-heavy multithreaded tasks and the Core i7 retaining an edge in specific memory-latency-sensitive workloads. This analysis will walk through the head-to-head results, where each processor wins, and what the specification and architecture differences mean for potential buyers.

Head-to-Head Benchmarks

The most striking pattern in the data is the Xeon Bronze 3408U’s near-universal victory across the Cinebench suite. In Cinebench R15, R20, and R23, the Xeon wins both multicore and singlecore tests by a consistent margin of roughly 23.6% to 23.7%. For example, in Cinebench R23 multicore, the Xeon scores 8473 against the Core i7’s 6855, a 23.6% lead. Similarly, in Cinebench R23 singlecore, the Xeon’s 1196 beats the Core i7’s 967, a 23.7% advantage. This consistency across all Cinebench versions suggests a fundamental architectural efficiency advantage for the Sapphire Rapids Xeon, not just a raw core-count benefit.

The Xeon’s dominance extends into several PassMark sub-tests. The most extreme example is in `passmark_find_prime_numbers`, where the Xeon scores 119 versus the Core i7’s 34, a 250% delta. The Xeon also more than doubles the Core i7 in `passmark_physics` (1114 vs 548, a 103.3% win) and nearly doubles it in `passmark_floating_point_math` (29142 vs 14597, a 99.6% win). Data encryption is another massive win for the Xeon: 5274 versus 2264, a 133% advantage, which points to the presence of newer instruction set extensions. Extended instructions also favor the Xeon (10387 vs 7579, a 37% win), as does the overall `passmark_multithread` score (9969 vs 8062, a 23.7% lead).

However, the Core i7-4790K is not without its counterattacks. The most significant is in `passmark_single_thread`, where the Core i7 scores 2466 against the Xeon’s 1516, a 38.5% deficit for the Xeon. This is a direct reflection of the Core i7’s much higher clock speed (4.40 GHz boost vs 1.90 GHz boost). The Core i7 also wins in `passmark_data_compression` (121722 vs 95714, a 21.4% lead) and `passmark_integer_math` (29163 vs 22803, a 21.8% lead). The final win for the Core i7 is in `passmark_random_string_sorting` (16431 vs 12073, a 26.5% lead). It’s notable that the Core i7 wins 5 of the 17 head-to-head benchmarks, but the Xeon wins 12, including all of the Cinebench rendering tests.

Where Each One Wins

The data paints a clear picture of two distinct usage profiles. The Intel Xeon Bronze 3408U is the clear winner for any workload that scales with cores and modern instruction sets. Its wins in `passmark_physics`, `passmark_floating_point_math`, and `passmark_find_prime_numbers` indicate strength in scientific computing, simulation, and any task involving heavy mathematical computation. The 133% lead in encryption is particularly relevant for server-side security, database encryption, and secure communications. The consistent 23.6% lead across Cinebench R15, R20, and R23 (both multicore and singlecore) shows that even in lightly-threaded rendering tasks, the newer architecture holds a decisive edge. For a server or workstation handling virtualization, rendering, or data processing, the Xeon’s profile is overwhelmingly superior.

In contrast, the Intel Core i7-4790K wins specifically in workloads where high clock speed and low memory latency are critical. The 38.5% win in single-threaded PassMark is a classic indicator of strength in legacy applications, certain types of legacy games, and tasks that cannot utilize multiple cores effectively. Its wins in `passmark_data_compression` and `passmark_random_string_sorting` are unusual; these are often memory-bandwidth-sensitive, but the Core i7’s high frequency and lower-latency DDR3 memory architecture appear to give it a decisive edge here. The `passmark_integer_math` win (21.8%) suggests that for certain integer-heavy operations that are not vectorized, the high clock speed wins out over the Xeon’s additional cores. In short, the Core i7 is a specialist for high-frequency, latency-sensitive single-threaded tasks.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Xeon Bronze 3408U has an average benchmark score of 12019, while the Intel Core i7-4790K has an average score of 11745. The Xeon is approximately 2.3% higher.

Q: How much faster is the Xeon in Cinebench R23 multicore?

A: The Xeon Bronze 3408U scores 8473, while the Core i7-4790K scores 6855. This represents a 23.6% lead for the Xeon.

Q: Is the Core i7-4790K better at any single-threaded task?

A: Yes, in PassMark’s single-thread test, the Core i7-4790K scores 2466, which is 38.5% higher than the Xeon’s score of 1516.

Q: What is the difference in memory bandwidth?

A: The Xeon Bronze 3408U supports eight-channel DDR5 memory with a bandwidth of 256.0 GB/s, while the Core i7-4790K supports dual-channel DDR3 with a bandwidth of 25.6 GB/s. The Xeon has a 10x advantage in theoretical memory bandwidth.

Q: Which processor supports ECC memory?

A: Only the Intel Xeon Bronze 3408U supports ECC memory. The Intel Core i7-4790K does not.

Q: What are the nearest rivals for each processor based on average score?

A: The Xeon Bronze 3408U’s nearest rival is the Intel Xeon Gold 6314U (12026 avg score, -0.1% delta), while the Core i7-4790K’s nearest rival is the Intel Core i7-1185G7 (11697 avg score, 0.4% delta).

Specification Differences

The core specifications diverge sharply between the two. The Xeon Bronze 3408U has 8 cores and 8 threads, while the Core i7-4790K has 4 cores and 8 threads. The Xeon’s base clock is 1800 MHz and boost clock is 1900 MHz; the Core i7’s base clock is 4.00 GHz and boost clock is 4.40 GHz. Thermal design power differs, with the Xeon rated at 125W and the Core i7 at 88W. The Xeon uses the Intel Socket 4677, while the Core i7 uses the older Intel Socket 1150. The Xeon supports DDR5 memory over an eight-channel bus, while the Core i7 uses DDR3 over a dual-channel bus. The Xeon provides PCIe Gen 5 with 80 lanes, versus the Core i7’s PCIe Gen 3 with 16 lanes. Only the Core i7 has integrated graphics (Intel HD 4600); the Xeon has none. The Xeon is an active, server/workstation part with a launch MSRP of $425, while the Core i7 is an end-of-life desktop part with a launch MSRP of $350. The Core i7 has an unlocked multiplier; the Xeon does not.

Architecture Differences

The architectural gap is generational. The Xeon Bronze 3408U is built on the Sapphire Rapids architecture using a 10 nm process node, while the Core i7-4790K is Haswell on a 22 nm node. The Xeon’s cache hierarchy is per-core: 80 KB of L1 and 2 MB of L2 per core, with a 22.5 MB shared L3 cache. The Core i7 has 64 KB of L1 and 256 KB of L2 per core, with a much smaller 8 MB shared L3 cache. The Xeon has no integrated graphics, while the Core i7 includes Intel HD 4600. The Xeon’s memory support is eight-channel DDR5 with ECC, and it has a massive 80 PCIe Gen 5 lanes. The Core i7 is limited to dual-channel DDR3 without ECC and 16 PCIe Gen 3 lanes. The Xeon’s transistor count is not listed in the data, while the Core i7 has 1,400 million transistors on a 177 mm² die. The Xeon’s part number is SRMGB, while the Core i7’s is SR219.

The Verdict

The data dictates a clear verdict for distinct use cases. The Intel Xeon Bronze 3408U is the appropriate choice for server and workstation environments where multithreaded performance, memory bandwidth, and data integrity are paramount. Its 23.6% lead in Cinebench R23 multicore, 99.6% lead in floating-point math, and 133% lead in encryption, combined with support for ECC and eight-channel DDR5, make it the superior part for rendering, scientific computation, database encryption, and virtualized workloads. The 67th percentile ranking among all CPUs is identical for both, but the Xeon achieves this with a far more modern platform.

The Intel Core i7-4790K, despite being end-of-life, remains relevant only for very specific, high-frequency, single-threaded tasks. Its 38.5% lead in PassMark single-thread performance and its wins in data compression and integer math are noteworthy, but they are narrow victories in a landscape where the Xeon wins 12 of 17 benchmarks. The Core i7’s 88W TDP and unlocked multiplier make it a legacy enthusiast part, but its lack of ECC, limited memory bandwidth (25.6 GB/s vs 256.0 GB/s), and older 22 nm process place it at a significant structural disadvantage. For any new deployment, the Xeon Bronze 3408U is the data-backed winner; the Core i7-4790K is only justifiable for maintaining legacy systems that require its unique single-threaded characteristics.