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AMD has introduced the latest member of the EPYC CPU line , the 4005 series. The new series comes with six to 16 Zen 5 cores running from 3 GHz up to 5.7 GHz and up to 128 MB of L3 cache. I/O comes in the form of two-channel DDR5 ECC and up to 28 lanes of Gen 5 PCIe. As AM5 socket devices, the 4005 series enables easier migration from the prior EPYC 4004 series CPUs.
AMD EPYC 4005 CPU.
The 4005 targets small businesses and hosted IT server applications. To best meet the needs of these markets, the series balances power, economy, and performance.
A 'Best-in-Class,' Entry-Level Device
Not everyone needs top-end, data center-class servers. Small businesses still need general networking, hosted apps, email, and hosted storage. Past solutions for this class of equipment made the tradeoff of lower core counts and fewer features. With the 4005 series , AMD endeavors to tailor to the needs of this market while respecting the financial boundaries present in the small business world.
The same balance makes the CPU useful for hosted IT services. Small hosted IT service providers take on the networking and IT burden from businesses that have the resources to justify in-house IT staff. Even a few PCs and laptops create a support burden greater than a small company can manage. The hosted service providers step in and manage the devices as well as all networking-related tasks. With a low price, generous I/O, high-core count, and low power requirements, the EPYC 4005 series is positioned as a strong candidate to meet these needs.
| Model | “Zen 5” Cores/Threads | L3 Cache (MB) | Default TDP (W) | F Base (GHz) | F Max Boost (GHz) 2 | Price (1KU, USD) |
| 4565P |
16/32 |
64 | 170 | 4.3 | 5.7 |
$589 |
| 4545P |
16/32 |
64 | 65 | 3.0 | 5.4 |
$549 |
| 4465P |
12/24 |
64 | 65 | 3.4 | 5.4 |
$399 |
| 4345P |
8/16 |
32 | 65 | 3.8 | 5.5 |
$329 |
| 4245P |
6/12 |
32 | 65 | 3.8 | 5.4 |
$239 |
| 4585PX |
16/32 |
128 | 170 | 4.3 | 5.7 |
$699 |
EPYC 4005 series model comparison.
Going Toe to Toe With Xeon
AMD pits the EPYC 4005 CPUs most directly against Intel Xeon E-2400 and 6300P CPUs. While the Intel CPUs are price competitive with the EPYC 4005, the 4005 cuts the price per core to $40–$44 compared to the Xeon’s $53–$84 per core. The EPYC 4005 series contains between six and 16 cores compared to the Xeon E-2400 and 6300P’s four to eight cores. According to AMD, tests run on the Phoronix test suite showed the EPYC 4565P's 16-core besting the top-of-stack, sixth-generation Intel Xeon 6300P by 1.83x1.
Performance benchmarks vs. comparable Intel Xeon CPU.
AMD also reports 4005 performance gains over Xeon’s AVX2. AVX is a multiprocessing taxonomy that allows a single instruction to act on multiple data (SIMD) points simultaneously. AVX2 delivers 256 bits of SIMD while the EPYC 4005 ups that to AVX-512. This AVX-512, along with simultaneous multi-threading (SMT), gives the AMD processors an advantage in memory and I/O intensive operations.
Born and Bred for Hosting Applications
While small business servers and hosting servers don’t get as much attention as AI data centers, they are still a critical component of the world’s computing infrastructure. General IT hosting servers must be high performing, versatile, reasonably priced, and low power-consuming.
AMD EPYC 4005 series CPU block diagram.
The 4005 is also well-suited to data-intensive applications such as web server hosting, content creation, and small business AI applications, with its high core count, generous PCIe I/O, and DDR5 at up to 5,600 MHz. The series' multi-threaded operation can also serve computationally intensive applications such as code compiling and computer vision applications.
The EPYC 4005 CPUs are shipping now and are available in servers from vendors including Altos, ASRock Rack, Gigabyte, Lenovo, MiTAC, MSI, New Egg, OVHcloud, Supermicro, and Vultr.
