AMD EPYC 4124P vs AMD Ryzen 5 7540U Comparison

The Verdict

The data splits this comparison into two clear domains. The AMD EPYC 4124P is the choice for sustained single-threaded and bursty multi-threaded workloads that favor its high boost clock and 32 MB of L3 cache. The AMD Ryzen 5 7540U, with its six cores and twelve threads, dominates the broader spectrum of PassMark productivity tests and the older Cinebench R15 metric.

Looking at the aggregate, the Ryzen 5 7540U holds a higher average benchmark score of 24,188 compared to the EPYC 4124P's 23,167, a lead of roughly 4.4%. It also wins 9 of the 15 head-to-head comparisons. However, the EPYC 4124P is not a clear loser. It wins 6 of those comparisons, including some of the most significant single-threaded and specific computational tests.

The EPYC 4124P is the pick for tasks that depend on raw single-core speed, such as lightly threaded server-side scripting, database queries that are latency-bound, or any application where the 5.10 GHz boost clock is fully utilized. The Ryzen 5 7540U is the pick for mixed productivity suites, floating-point math, and integer-heavy workloads, where its two extra physical cores provide a consistent advantage.

The EPYC 4124P's launch MSRP is $149. The Ryzen 5 7540U has no recorded launch MSRP in the database. The EPYC part is a server/workstation chip on the AM5 socket, while the Ryzen is a mobile chip on the FP7 socket. Their physical platforms are not interchangeable.

Architecture Differences

Both processors are built on AMD's Zen 4 architecture, but they are fundamentally different implementations. The EPYC 4124P uses the Raphael codename, which indicates a desktop-derived design, while the Ryzen 5 7540U uses the Phoenix codename, a dedicated mobile design.

The most striking difference is the fabrication node. The EPYC 4124P uses a 5 nm process from TSMC, while the Ryzen 5 7540U uses a more advanced 4 nm process from the same foundry. This helps explain the Ryzen's lower 28 W TDP versus the EPYC's 65 W TDP, despite the Ryzen having more cores.

Core counts differ significantly. The EPYC 4124P offers 4 cores and 8 threads, while the Ryzen 5 7540U offers 6 cores and 12 threads. This gives the Ryzen a 50% advantage in core and thread count. The EPYC counters with higher clock speeds: a 3.80 GHz base clock and a 5.10 GHz boost clock, versus the Ryzen's 3.20 GHz base and 4.90 GHz boost.

Cache allocation is another major split. The EPYC 4124P has 32 MB of shared L3 cache, while the Ryzen 5 7540U has only 16 MB. Both have the same 64 KB L1 and 1 MB L2 per core. The EPYC's larger L3 is a significant factor in its single-threaded benchmark wins.

Memory support is similar on the surface: both support DDR5 and dual-channel memory. However, the EPYC 4124P has a lower memory bandwidth of 83.2 GB/s, while the Ryzen 5 7540U reaches 89.6 GB/s. Both support ECC memory.

PCIe connectivity also differs. The EPYC 4124P provides PCIe Gen 5 with 28 CPU lanes, while the Ryzen 5 7540U provides PCIe Gen 4 with 20 CPU lanes. This makes the EPYC more suitable for expansion-heavy server roles.

The integrated graphics differ as well. The EPYC has generic Radeon Graphics, while the Ryzen 5 7540U has the Radeon 740M. The EPYC's transistor count is 6,570 million on a 71 mm² die, while the Ryzen 5 7540U has 25,000 million transistors on a 178 mm² die, reflecting the larger, more complex mobile SoC.

Head-to-Head Benchmarks

The most dramatic win for the EPYC 4124P comes in Cinebench R23 multi-core, where it scores 15,264 against the Ryzen's 10,383, a 47% advantage. This is a massive reversal of the core-count expectation, driven by the EPYC's higher boost clock and larger L3 cache in this specific test. The EPYC also leads Cinebench R23 single-core by 26.8%, scoring 2,154 versus 1,699.

The Ryzen 5 7540U takes the older Cinebench R15 tests. It wins multi-core with 1,676 against 1,538, an 8.2% margin, and single-core with 264 against 216, an 18.2% margin. This shows the Ryzen has an edge in legacy rendering benchmarks.

In PassMark tests, the Ryzen 5 7540U wins the majority. It leads in integer math with 60,152 versus 52,855, a 12.1% advantage. It leads in floating-point math with 36,077 versus 31,518, a 12.6% advantage. It also wins data compression by 3.1%, data encryption by 7.4%, extended instructions by 1.7%, random string sorting by 2%, and the multithread score by 2.4%.

The EPYC 4124P posts its other wins in PassMark single-thread with 3,897 versus 3,544, a 10% margin, and in PassMark physics with 1,087 versus 964, a 12.8% margin. The EPYC also wins the prime number finding test with 89 versus 66, a 34.8% margin.

The pattern is clear. The EPYC 4124P wins when the workload is short, single-threaded, or heavily dependent on cache and clock speed. The Ryzen 5 7540U wins when the workload spreads across many threads or involves sustained math operations.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD EPYC 4124P has a boost clock of 5.10 GHz, while the AMD Ryzen 5 7540U has a boost clock of 4.90 GHz.

Q: Does the Ryzen 5 7540U have more cores?

A: Yes, the Ryzen 5 7540U has 6 cores and 12 threads, while the EPYC 4124P has 4 cores and 8 threads.

Q: Which processor is better for Cinebench R23 multi-core?

A: The EPYC 4124P is significantly better, scoring 15,264 versus the Ryzen's 10,383, a 47% lead.

Q: What is the memory bandwidth difference?

A: The EPYC 4124P has a memory bandwidth of 83.2 GB/s, while the Ryzen 5 7540U has a higher 89.6 GB/s.

Q: Which chip supports ECC memory?

A: Both the AMD EPYC 4124P and the AMD Ryzen 5 7540U support ECC memory.

Q: Do both processors use the Zen 4 architecture?

A: Yes, both use Zen 4, but the EPYC 4124P is codenamed Raphael and the Ryzen 5 7540U is codenamed Phoenix.

Where Each One Wins

The EPYC 4124P wins in scenarios that reward its 5.10 GHz boost clock and 32 MB L3 cache. The Cinebench R23 multi-core result, with a 47% lead, suggests it excels in modern rendering workloads that are well-optimized for high-frequency cores. Its 26.8% lead in Cinebench R23 single-core makes it the better choice for any application where a single thread is the bottleneck. The PassMark single-thread score, 10% ahead, reinforces this. The physics test win of 12.8% and the prime number finding win of 34.8% further indicate strength in computational logic that does not scale perfectly with core count.

The Ryzen 5 7540U wins in general productivity and math-heavy scenarios. Its 12.1% lead in integer math and 12.6% lead in floating-point math show that its two extra cores provide a tangible benefit for number-crunching tasks. The wins in data compression, data encryption, and random string sorting, though smaller at 1.7% to 7.4%, are consistent. The multithread score advantage of 2.4% shows that for most parallel PassMark workloads, the Ryzen is slightly faster. Its Cinebench R15 wins, both multi and single core, indicate an advantage in legacy software that uses older instruction paths.

For a server or workstation role, the EPYC 4124P offers PCIe Gen 5 and 28 lanes, making it the better foundation for high-speed storage and expansion. For a mobile or power-constrained role, the Ryzen 5 7540U's 28 W TDP versus the EPYC's 65 W TDP is a definitive advantage.

Specification Differences

The core specification differences between the AMD EPYC 4124P and the AMD Ryzen 5 7540U are as follows:

• Series: EPYC 4004 series versus 7000 series.
• Cores: 4 versus 6.
• Threads: 8 versus 12.
• Base Clock: 3.80 GHz versus 3.20 GHz.
• Boost Clock: 5.10 GHz versus 4.90 GHz.
• TDP: 65 W versus 28 W.
• Socket: AMD Socket AM5 versus AMD Socket FP7.
• Codename: Raphael versus Phoenix.
• Process Node: 5 nm versus 4 nm.
• Transistors: 6,570 million versus 25,000 million.
• Die Size: 71 mm² versus 178 mm².
• L3 Cache: 32 MB shared versus 16 MB shared.
• Memory Bandwidth: 83.2 GB/s versus 89.6 GB/s.
• PCIe: Gen 5, 28 lanes versus Gen 4, 20 lanes.
• Integrated Graphics: Radeon Graphics versus Radeon 740M.
• Market Segment: Server/Workstation versus Mobile.
• Release Date: 2024-05-20 versus 2023-05-02.
• Launch MSRP: $149 versus not recorded.
• Part Number: 100-000001570 versus 100-000000957 (FP7r2) and 100-000000966 (FP7).