TimesTen Scaleout is Linux software that runs on x8664 hardware. The performance of TimesTen Scaleout is dependent on the performance of the hardware components - you get what you pay for.
Given well balanced hardware, you can expect the performance of TimesTen Scaleout to be proportional to the performance of the hardware. For example even though TimesTen Scaleout performs well on older hardware or small VMs, it will tend to perform much better on the latest hardware, larger VMs or bare metal machines.
Well balanced hardware means that the critical components (ie CPU, network cards, persistent storage and DRAM) are equivalent. There is no point having really fast disk and a slow network or a really fast network and slow CPUs.
TimesTen Scaleout is an In-Memory database which ideally will be CPU bound, so the faster your CPU the better:
TimesTen Scaleout databases still need to persist their data, so storage devices with high bandwidth and low latency are best:
You can choose whatever x8664 hardware that you want on premise. The following vendors all make good server class x8664 hardware:
In the Oracle Cloud, dedicated Bare Metal DenseIO systems give the best performance, eg BM.DenseIO1.36 or BM.DenseIO2.52
For other clouds, you will tend to get optimal performance based on dedicated shapes with a good balance of memory density, CPU cores, disk and network performance.
You can run TimesTen Scaleout using multipe small VMs in your favorite cloud (eg VM.Standard1.1), however you will be limited by the CPU, DRAM, disk IO and networking of those VMs. You get what you pay for!
Disclaimer: These are my personal thoughts and do not represent Oracle's official viewpoint in any way, shape, or form.