CFD and finite element analysis · Ansys
Workstations for Ansys Fluent and Mechanical
Simulation sized by the licence you hold and the size of your mesh, where memory bandwidth per core matters as much as the core count.
Task by task
What Ansys actually needs
Fluent CFD
Needs: Memory bandwidth and licensed cores
Fluent scales with cores until memory bandwidth runs out, so all memory channels should be filled.
Fluent GPU solver
Needs: Video memory
When the mesh fits in the card's memory, the GPU solver runs a whole case far faster.
Mechanical FEA
Needs: Memory, then a fast drive
The direct solver is fastest when the whole problem fits in memory.
The same advice applies to Ansys CFX, Ansys Rocky and Ansys LS-DYNA.
Hardware at a glance
What to buy for Ansys
Our picks
Machines we recommend for Ansys
| Specification | |||
|---|---|---|---|
| Our take | For meshes in the low millions of cells and the licence tiers most departments hold. All eight memory channels filled. | The workstation we recommend for serious CFD. 32 cores, 256GB and a 48GB card that can run mid-size cases on the GPU solver. | A rack server for a team sharing one solver licence. 64 cores on 24 memory channels, running unattended in a server room. |
| Processor | AMD 24 Core Processor | AMD 32 Core Processor | AMD 64 Core Processor |
| Graphics | PNY 32 GB Vram graphics card | PNY 48 GB Vram graphics card | PNY 48 GB Vram graphics card |
| Memory | 128GB High speed memory | 256GB High speed memory | 384GB High speed memory |
| Storage | 3TB total | 4TB total | 5.76TB total |
| Form | Tower, desk-side | Tower, desk-side | 4U rack |
| Actions |
Questions
Ansys hardware questions
How many cores do I need for Ansys Fluent?
As many as your licence covers, and no more. Ansys licenses solver cores in steps, so buying 64 cores against a licence that covers 36 leaves the rest idle.
How much RAM for Fluent?
A rough planning figure is 1 to 2GB per million cells, more for double precision and complex physics. A 50 million cell case therefore wants 64 to 128GB.
Should I use the Fluent GPU solver?
For cases it supports, it can be many times faster than the CPU solver, as long as the mesh fits in the card's memory. That is why our CFD machines carry 32 to 48GB professional cards.
Workstation or server for simulation?
A workstation suits one engineer. A rack server suits a team sharing a licence, running long jobs overnight without tying up anyone's desk.
Why buy from us
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