AMD EPYC 4585PX vs AMD EPYC 7513 Comparison

The AMD EPYC 7513 and AMD EPYC 4585PX occupy different corners of the server/workstation market, yet their average benchmark scores sit remarkably close: the EPYC 7513 posts an average of 102244, while the EPYC 4585PX trails by 1.4% at 100819. Both processors rank in the 98th percentile against all CPUs, placing them in the same performance tier overall. The 4585PX wins 13 of 17 head-to-head benchmarks, but the 7513 counters with decisive victories in specific workloads, particularly encryption and data compression. The data suggests these are not direct competitors but rather tools optimized for different task profiles, with the 4585PX leveraging a newer architecture and far higher clocks to overcome a 2x core-count disadvantage in most tests.

Where Each One Wins

The EPYC 4585PX dominates in raw compute throughput across rendering and simulation workloads. In Cinebench testing, the 4585PX wins every single-core and multi-core iteration: R15 multi-core shows a 16.6% lead (6093 vs 5083), R20 multi-core shows the same 16.6% gap (25389 vs 21181), and R23 multi-core delivers 60451 versus 50431. Single-core advantages are consistent at 16.6% in R15 (860 vs 717), R20 (3584 vs 2989), and R23 (8534 vs 7119). The PassMark multithread test reinforces this pattern with a 17.1% win for the 4585PX (71552 vs 59331). Physics simulation shows an even larger 28.3% gap (7140 vs 5118), indicating the newer architecture handles complex physical modeling substantially better. Floating-point math is nearly a tie, with the 4585PX ahead by just 1.9% (154641 vs 151713).

The EPYC 7513 wins in memory-sensitive and integer-heavy operations. Data encryption is its strongest category: a 28.9% lead (63628 vs 49374) suggests the 7513's eight-channel memory bus provides a significant advantage for cryptographic workloads. Data compression shows a 4.3% win (932240 vs 893899), while random string sorting yields a 5.9% edge (104660 vs 98839). Integer math goes to the 7513 by 6.3% (272145 vs 255898). These wins are narrower than the 4585PX's Cinebench margins, but they highlight that the 7513's 32 cores and 128 MB of shared L3 cache still matter for certain parallel tasks.

Architecture Differences

The two processors come from different generations and design philosophies. The EPYC 7513 uses Zen 3 architecture on a 7 nm TSMC process, codenamed Milan, while the EPYC 4585PX uses Zen 5 on a 4 nm TSMC process, codenamed Grado. This generational gap explains much of the performance divergence: the 4585PX's base clock of 4.30 GHz and boost clock of 5.70 GHz dwarf the 7513's 2.60 GHz base and 3.65 GHz boost. The 4585PX achieves these clocks with a 170 W TDP, lower than the 7513's 200 W TDP, indicating better power efficiency per clock.

Core counts differ dramatically. The 7513 offers 32 cores and 64 threads, double the 4585PX's 16 cores and 32 threads. Cache hierarchies also diverge: the 7513 provides 64 KB L1 and 512 KB L2 per core, while the 4585PX uses 80 KB L1 and 1 MB L2 per core. Both share 128 MB of L3, but the 7513's larger core count means each core has less L3 on average. Transistor counts reflect the design differences: the 7513 packs 33,200 million transistors across eight 81 mm² dies, while the 4585PX uses 16,630 million transistors on two 70.6 mm² dies.

Memory subsystems are fundamentally different. The 7513 supports DDR4 with an eight-channel bus delivering 204.8 GB/s bandwidth, whereas the 4585PX uses DDR5 with a dual-channel bus at 89.6 GB/s. The 7513's bandwidth advantage is stark, yet the 4585PX still wins most benchmarks, suggesting the newer memory architecture and higher clocks compensate. PCIe connectivity also differs: the 7513 provides Gen 4 with 128 lanes, while the 4585PX offers Gen 5 with 24 lanes. The 4585PX includes integrated Radeon Graphics; the 7513 has none. Sockets are incompatible (SP3 for the 7513, AM5 for the 4585PX), and both lack unlocked multipliers.

The Verdict

The data points to the EPYC 4585PX as the superior general-purpose processor, winning 13 of 17 head-to-head tests with particularly large margins in single-threaded work. The PassMark single-thread score of 4795 versus 2479 represents a 48.3% advantage, the largest gap in any benchmark. For workloads that rely on high clock speeds—rendering, physics simulation, extended instruction sets—the 4585PX is clearly the better choice. Its 16.6% lead across all Cinebench tests and 17.1% lead in multithreaded PassMark show that architectural efficiency can overcome a 2x core-count deficit.

The EPYC 7513 remains the pick for specific server workloads. Its 28.9% encryption advantage and 6.3% integer math win indicate that memory bandwidth and core count still matter for these tasks. The 7513's eight-channel memory bus provides 204.8 GB/s versus 89.6 GB/s, explaining its compression and sorting wins. For a database server handling encrypted traffic or a workload with heavy integer operations and large data sets, the 7513's profile is more suitable.

The choice depends on workload type. If the priority is maximum throughput across varied compute tasks, the 4585PX delivers more wins. If the workload is dominated by encryption, compression, or integer math, the 7513's advantages are measurable and meaningful. Both processors sit at the 98th percentile, but they achieve that position through different means.

FAQ

Q: Which processor has higher single-core performance?

A: The EPYC 4585PX wins single-core tests by 16.6% in Cinebench R15 (860 vs 717), R20 (3584 vs 2989), and R23 (8534 vs 7119), and by 48.3% in PassMark single-thread (4795 vs 2479).

Q: How does core count affect the comparison?

A: The EPYC 7513 has 32 cores and 64 threads, double the 4585PX's 16 cores and 32 threads. Despite this, the 4585PX wins most multi-core tests, including Cinebench R23 multi-core by 16.6% (60451 vs 50431).

Q: Which processor is better for encryption workloads?

A: The EPYC 7513 wins data encryption by 28.9% (63628 vs 49374), likely due to its eight-channel memory bus providing 204.8 GB/s bandwidth versus the 4585PX's dual-channel 89.6 GB/s.

Q: What are the memory support differences?

A: The 7513 uses DDR4 with an eight-channel bus, while the 4585PX uses DDR5 with a dual-channel bus. The 7513 offers 204.8 GB/s bandwidth versus 89.6 GB/s for the 4585PX.

Q: Do both processors support ECC memory?

A: Yes, both the EPYC 7513 and EPYC 4585PX list ECC memory support as true.

Q: Which processor has a higher boost clock?

A: The EPYC 4585PX boosts to 5.70 GHz, compared to the EPYC 7513's 3.65 GHz. The 4585PX also has a higher base clock at 4.30 GHz versus 2.60 GHz.

Head-to-Head Benchmarks

The most striking result is PassMark single-thread, where the 4585PX scores 4795 against 2479, a 48.3% margin that dwarfs every other difference. This is the clearest indicator of architectural advantage: the Zen 5 core at 5.70 GHz boost simply outclasses the Zen 3 design at 3.65 GHz. Physics simulation shows a 28.3% gap (7140 vs 5118), reinforcing that the newer core handles complex calculations more efficiently. Find prime numbers follows with a 26.1% edge (514 vs 380), and extended instructions shows a 16.5% lead (67572 vs 56451). These wins span different compute types, from general math to specialized instruction sets.

The 7513's wins are concentrated in memory-bound operations. Data encryption shows the largest margin at 28.9% (63628 vs 49374), a result that aligns with the 7513's 204.8 GB/s memory bandwidth versus 89.6 GB/s. Integer math gives the 7513 a 6.3% win (272145 vs 255898), while random string sorting yields 5.9% (104660 vs 98839). Data compression is closer at 4.3% (932240 vs 893899). These victories are smaller than the 4585PX's margins but consistent across memory-intensive categories, suggesting the 7513's bandwidth advantage is real but limited to specific operation types.

Cinebench results show perfect uniformity: the 4585PX wins every test by exactly 16.6%, from R15 single-core to R23 multi-core. This consistency indicates that the performance gap is fundamental to the core design rather than workload-specific. The PassMark multithread test shows a similar pattern at 17.1% (71552 vs 59331), while floating-point math is nearly tied at 1.9% (154641 vs 151713). The 7513's only multi-threaded wins come in the PassMark suite's compression, encryption, integer, and sorting tests, which are not represented in Cinebench.

Specification Differences

The core count difference is the most obvious spec gap: 32 cores and 64 threads for the 7513 versus 16 cores and 32 threads for the 4585PX. Clock speeds are equally divergent, with the 7513 at 2.60 GHz base and 3.65 GHz boost, while the 4585PX runs at 4.30 GHz base and 5.70 GHz boost. TDP favors the 4585PX at 170 W versus 200 W, despite its higher clocks, reflecting the efficiency of the 4 nm process.

Memory specifications show the 7513's server orientation: DDR4 with eight-channel support and 204.8 GB/s bandwidth, versus the 4585PX's DDR5 with dual-channel support and 89.6 GB/s. Both support ECC. PCIe lanes differ sharply: 128 lanes of Gen 4 for the 7513, 24 lanes of Gen 5 for the 4585PX. The 4585PX includes integrated Radeon Graphics; the 7513 has no integrated graphics. Sockets are incompatible, with the 7513 on AMD Socket SP3 and the 4585PX on AMD Socket AM5.

Process technology separates the generations: 7 nm for the 7513 versus 4 nm for the 4585PX, both from TSMC. Transistor counts reflect the die design: 33,200 million across eight 81 mm² dies for the 7513, versus 16,630 million on two 70.6 mm² dies for the 4585PX. L1 cache per core is 64 KB for the 7513 and 80 KB for the 4585PX; L2 is 512 KB per core versus 1 MB per core. Both share 128 MB of L3 cache. Neither processor has an unlocked multiplier, and both are listed as Active in production status.