- Benchmarks shows AMD’s new EPYC 4005 series that surpasses older eight-channel EPYC 7601 memory systems with only two DIMMs
- Performance-Per-Watt improvements put AMDS 4005 chip in a new league of server efficiency
- Grado evidence newer designs beating older bulk – less memory, lower effect, even more performance
In an eight-year jump, AMD’s new EPYC 4585PX processor from the EPYC 4005 “Grado” series has shown performance improvements that almost triple output from AMD’s original flagship server chip, EPYC 7601.
Interestingly, the EPYC 4585PX processor is not part of the advanced EPYC 9005 family, but rather a lower cost-effective alternative.
According to Phoronix, over 200 benchmarks were run on Ubuntu 25.04 across different workloads, server tasks, HPC, scripting, media coding and collection.
Benchmarks highlights a dramatic efficiency jump
On average, the EPYC 4585PX provided 2.69 times the performance of the original 7601 despite fewer memory channels and a more compact setup.
When adjusted for power, the improvement looks even more striking: On a performance-per-watt basis, the newer chip 2.85x is more effective thanks to more refined architecture and improved design efficiency.
These results are likely to interest enthusiasts for the best server hardware, and they raise questions about how much older corporate systems have fallen afterwards.
It also puts AMD’s cheaper chips contrary to more expensive processors, typically used by top-tier web hosting providers.
However, not everything is a pure victory. While the use of wall power in the full system was significantly improved – 225W for the newer platform compared to 238W for the older Naples server – the measurements at CPU level were less crucial.
The average CPU consumption was 153W for EPYC 4585PX and 141W for the older 7601 with highest values of 204W and 195W respectively.
These numbers suggest that although the system as a whole has become more efficient, the processor alone has not cut energy consumption so dramatically.
For those seeking green infrastructure, especially small business operators or Soho setups, the lower idle output may be more relevant than comparisons with full load.
Run on a modern super micro platform with only two DDR5 DIMMs, the EPYC 4585PX system still managed to beat the eight-channel memory performance of the EPYC 7601 in most workloads.
It suggests that memory bandwidth is no longer the only performance determining.
With support for newer chipset and more effective memory, the “Grado” system seems to offer real ceiling height to infrastructure installations on entry-level, especially for NAS buildings where power efficiency and thermal boundaries matter.
The data shows AMD’s cheap EPYC 4005 chips can now surpass former flagships without breaking the bank or power budget.
The upcoming comparison with the EPYC 9005 chips promises even bigger gains, although takeaway for now is that you no longer need a premium part to get premium evil.
