AMD EPYC 7773X 'Milan-X' dual-CPU: 128C/256T OC'd @ 4.8GHz

AMD's new EPYC 7773X 'Milan-X' CPU with 3D V-Cache tested with some overclocking, but it's not real overclocking... say what?

@anthony256
Published Tue, Feb 8 2022 10:21 PM CST

AMD's new EPYC 7773X "Milan-X" processors with 3D V-Cache technology are now out on the market, with some "overclocking" performed on the dual-CPU powerhouse 128-core, 256-thread monster.

AMD EPYC 7773X 'Milan-X' dual-CPU: 128C/256T OC'd @ 4.8GHz 01 | TweakTown.com
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A dual-socket SuperMicro motherboard was used, with dual AMD EPYC 7773X "Milan-X" processors with 64 cores and 128 threads each, so with a dual-CPU configuration, we're looking at 128 cores and 256 threads -- as well as AMD's new 3D V-Cache technology -- and now some overclocking.

One of the AMD EPYC 7773X processors was detected as the "100-000000504-04 CPU" which is an OPN core for the AMD engineering sample. This processor in particular has a 2.2GHz base CPU clock and up to 3.5GHz boost CPU clock -- but this engineering sample had its CPU clocks at 100MHz lower -- 2.1GHz and 3.4GHz, respectively. But there's also the special 3D V-Cache technology that dollops a special layer of L3 cache right on top of the compute dies.

Each of AMD's new EPYC 7773X "Milan-X" processors has 8 x chiplets with an additional 96MB of cache -- in total, the CPU has a huge 788MB of 3D V-Cache -- and now, it's time for the Milan-X chips to be "overclocked".

AMD EPYC 7773X 'Milan-X' dual-CPU: 128C/256T OC'd @ 4.8GHz 02 | TweakTown.com
AMD EPYC 7773X 'Milan-X' dual-CPU: 128C/256T OC'd @ 4.8GHz 03 | TweakTown.com

Chinese Bilibili content creator "kenaide" used the two AMD EPYC 7773X "Milan-X" CPUs with the special EPYC Milan/Rome ES/QS overclocking tool created by Uat4 and ExecutableFix. The tool unlocks the power limits and increases the maximum all-core frequencies and voltages much higher than AMD allows.

AMD EPYC 7773X 'Milan-X' dual-CPU: 128C/256T OC'd @ 4.8GHz 04 | TweakTown.com

But... this is solely for engineering samples.

This is where things get tricky with the wording of "overclocked" when it comes to the AMD EPYC 7773X "Milan-X" processors... as ExecutableFix told VideoCardz that the CPU frequency that CPU-Z software is detecting is "not a real frequency, but rather a target".

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Anthony joined the TweakTown team in 2010 and has since reviewed 100s of graphics cards. Anthony is a long time PC enthusiast with a passion of hate for games built around consoles. FPS gaming since the pre-Quake days, where you were insulted if you used a mouse to aim, he has been addicted to gaming and hardware ever since. Working in IT retail for 10 years gave him great experience with custom-built PCs. His addiction to GPU tech is unwavering.

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