Netcup G12.5 Architecture Analysis: AMD EPYC 9005 & 9004, DDR5 ECC & NVMe RAID 10 Tests

Netcup Generation 12.5 server hardware features distinct CPU configurations across product lines:

• Root Server (RS G12.5): The entire RS G12.5 lineup (RS 500 through RS 12000) is powered by the latest AMD EPYC™ 9645 processors with clock speeds up to 3.7 GHz, from the flagship AMD EPYC 9005 series (Turin, Zen 5c architecture, 3nm process). Each vCPU corresponds to a 100% dedicated physical core via KVM core pinning with 0% CPU steal, offering top-tier IPC and native AVX-512 support.
• Cloud VPS (VPS G12.5): While Netcup does not officially specify a single fixed CPU model for VPS G12.5, actual delivery benchmarks and community telemetry indicate the latest host nodes run on AMD EPYC 9004 series enterprise processors (Zen 4 architecture), strongly suspected to be AMD EPYC 9634 CPUs (the previous generation RS G11 flagship CPU). Even in a shared-core model, this delivers immense single-core and multi-core throughput.

A key hardware update in G12.5 is standard DDR5 registered ECC memory running at 4800 MT/s across multi-channel configurations. Compared to DDR4 (usually around 3200 MT/s), DDR5 increases raw memory throughput substantially while maintaining lower operating voltages. ECC error correction guards against single-bit memory corruption, making these nodes suitable for production databases and in-memory caches like Redis.

G12.5 servers utilize enterprise PCIe 4.0 NVMe SSDs configured in hardware RAID 10 arrays. In standard fio 4K random read/write tests, G12.5 instances sustain consistent high IOPS with write latencies remaining low. Sequential read speeds routinely reach 2,500+ MB/s. The RAID 10 redundancy ensures that individual drive replacements can be handled transparently by datacenter staff without interrupting guest VM operations.

Netcup Root Server Generation 12.5 (RS G12.5) is built on cutting-edge enterprise hardware designed for demanding production workloads:

• AMD EPYC™ 9645 Dedicated Cores: Clock speeds up to 3.7 GHz with 1:1 KVM physical core pinning. Sustained stress testing confirms 0.0% CPU steal with zero neighbor interference.
• DDR5 ECC RAM: High-speed DDR5 registered ECC memory ensures maximum data integrity, bitflip protection, and top-tier memory bandwidth.
• Lightning-Fast NVMe Storage: Enterprise PCIe 4.0 NVMe SSDs in hardware RAID 10 deliver exceptional IOPS and low write latency.
• 2.5 Gbit/s Network Card: Every RS G12.5 instance comes equipped with a 2.5 Gbit/s high-speed uplink for ultra-fast, rock-solid connectivity and large-scale data transfers.

Netcup has unified its contract structure across all VPS G12.5 and Root Server (RS G12.5) lines, discontinuing the previous 0-month hourly billing model (*stundengenau*). Three standard commitment tiers are now offered:

• 1-Month Contract (1 Monat Laufzeit): The baseline flexible tier with zero long-term commitment. Monthly billing cycle.
• 12-Month Contract (12 Monate Laufzeit): Provides an automatic 13% discount off the standard monthly price. This is the default rate displayed across netcup.discount. Furthermore, all promotional vouchers (such as 1 or 2 months free) require selecting the 12-month commitment.
• 24-Month Contract (24 Monate Laufzeit): Provides a deeper 26% discount off the standard monthly price for long-term production deployments.
• Cancellation & Renewal Notice: Under the German Civil Code (BGB), all fixed contracts auto-renew unless formally terminated (*Kündigung*) via the Customer Control Panel (CCP) at least 31 days prior to the expiration date.