SC72

SC72 — 12-Core CFD Node with 128 GB RAM for Cost-Effective ANSYS Fluent Solves

The SC72 node offers accessible CFD with generous memory for ANSYS Fluent, pairing a 12-core AMD Ryzen™ 9 3900X (up to 4.6 GHz) with 128 GB of RAM and 4 TB of SATA SSD storage. It puts a solid clock speed and a generous memory budget behind moderate cases at a cost-effective price point — well suited to work that needs room in memory more than an extreme core count. When you want dependable solves with plenty of RAM without paying for a high-end server, SC72 is the choice.

It is the value, memory-comfortable tier in our range: a capable consumer-class CPU, a generous 128 GB memory budget, and ample SSD storage — with a clear path up to higher-core, higher-memory, and GPU nodes as your needs grow.

Specifications

SC72 uses a Ryzen 9 3900X: 12 cores boosting to 4.6 GHz with 64 MB of L3 cache. Behind it, a generous 128 GB of RAM holds moderate-to-large meshes — more memory than its core count alone would suggest — and two 2 TB SATA SSDs give you 4 TB for case files, solution data, and autosaves.

What's included with SC72

Every SC72 rental comes with extras to help you get the most from it:

• A comprehensive CFD course, free — a full training course to sharpen your simulation skills, included at no extra cost.

• One month of Claude AI Premium — AI assistance to support your engineering, scripting, and problem-solving.

• One hour of free CFD consultation — direct time with our CFD engineers to help set up, troubleshoot, or optimize your case.

These come standard with the node — practical support alongside the compute.

What this node is built for

SC72 is the value, memory-comfortable tier in our range. It suits:

• Moderate meshes that need memory headroom — 128 GB holds larger cases than the core count alone would suggest.

• Steady and lighter transient runs — wherever the case fits in 128 GB and turnaround needs are modest.

• Learning, prototyping, and everyday CFD — a capable, cost-effective node for routine work.

• Cost-conscious simulation — generous RAM and storage without the expense of a high-core server.

With 12 cores at up to 4.6 GHz, Fluent partitions your mesh across them for a solid speed-up, while 128 GB of RAM gives moderate-to-large cases comfortable room in memory.

Cores vs. memory: choosing SC72

SC72's balance leans toward memory: a modest core count paired with a generous 128 GB. In CFD, cores determine how fast a case solves, while memory sets the largest mesh you can run — roughly 1 GB of RAM per million cells for a typical steady, single-phase case. With 128 GB, SC72 can hold sizeable meshes; its 12 cores then solve them at a steady pace.

• Want the same memory but more cores? See SG14 (24-core, 128 GB) or SC58 (48-core EPYC, 128 GB).

• Need even more memory? Step up to SC56 (1 TB high-memory).

• Want fast per-core performance? See SC57 (high-clock 16-core).

• Want GPU acceleration? Our GPU tiers (GP1, GP2) run Fluent's native GPU solver.

Tell us your cell count and physics, and we'll match you to the tier that fits. SC72 is a strong choice when your case needs memory headroom and a cost-effective node more than maximum core count.

Fast SSD storage

The two 2 TB SATA SSDs give you 4 TB of responsive storage — quick read/write for loading case files, writing solution data, and handling autosaves, so a fast solve is never held up by slow disk I/O. The generous capacity is helpful for transient runs that write data at every timestep. (If you need the higher throughput of NVMe for very I/O-heavy work, ask us about our NVMe-equipped nodes.)

How parallel solving works on this node

When you run Fluent in parallel, the solver partitions your mesh across all 12 cores (using algorithms such as METIS), each core solving its share of cells and exchanging boundary data each iteration via MPI. On a single node, that communication runs through fast on-chip channels rather than a network, keeping parallel overhead low. For moderate cases that fit in 128 GB, those 12 cores deliver a solid speed-up.

Why rent instead of buy

For cost-effective CFD with generous memory, SC72 gives you a capable 12-core CPU and 128 GB of RAM — plus a free course, a month of Claude AI Premium, and a consultation hour — with an easy step up when your meshes or core needs grow.

How it works — you're in full control

SC72 is yours to drive directly. You connect to the node over a secure remote desktop connection and run everything yourself, exactly as you would on a local workstation:

1. Connect via remote desktop — you get full remote access to the SC72 node.

2. Set up your simulation — load your geometry and case, configure your solver settings, and run ANSYS Fluent with all 12 cores at your command.

3. Run and monitor in real time — start, pause, adjust, and watch the solution as it progresses, with complete control throughout.

4. Keep your results — post-process on the node or download your solution and data files whenever you're ready.

You have full authority over the node for the duration of your rental: we provide the hardware and the support, and you run the simulations your way.

Frequently asked questions

Who is SC72 for?
Anyone who wants a cost-effective node with generous memory for moderate CFD cases — work that benefits from 128 GB of RAM more than from a high core count.

How large a mesh can it handle?
With 128 GB of RAM, plan for moderate-to-large meshes — into the tens of millions of cells for simpler steady single-phase cases, fewer for transient or multiphase physics (about 1 GB of RAM per million cells is a good starting estimate). Send us your case for a precise answer.

Why 128 GB on a 12-core CPU?
The generous memory lets SC72 hold meshes larger than its core count alone would suggest — a good fit for cases that are memory-hungry but don't need maximum parallelism. The 12 cores then solve them at a steady pace.

Is my data kept confidential?
Yes. Your geometry, case files, and results stay private to you, treated as strictly confidential — and because you run everything yourself over remote desktop, your work stays under your control throughout.

Get started with SC72

If you want cost-effective CFD with generous memory for moderate cases — with a free CFD course, a month of Claude AI Premium, and a consultation hour included — SC72 is built for exactly that.

Contact MR CFD for remote-desktop access to SC72 — and we'll help you confirm it's the right tier for your simulation.