The g6.48xlarge pairs 192 vCPU with 768 GiB of RAM, the 4.00 GiB-per-vCPU ratio that marks a GPU instance. In the name, "g" is graphics, "6" is the generation and "48xlarge" is the size within the g6 family. It runs on AMD EPYC 7R13 Processor at 2.6 GHz, and AWS introduced it in April 2024. AWS has since shipped g7; g7.48xlarge is the direct replacement at this size, scoring 5,701,982 CoreMark/s against this instance's 3,842,690 — roughly 48% more throughput for the same vCPU count. Rackspace Spot has no equivalent to offer: 8 × NVIDIA L4 wired together behind a high-speed interconnect is one tightly coupled machine, not 8 independent nodes — and that interconnect is usually what the instance was bought for. Spot's largest VM tops out at 16 vCPU and 128 GiB, and even that is not the missing piece here. The table below prices what AWS charges; the honest answer on the Spot side is that this workload stays where it is.
| Region | AWS on-demand | AWS Spot | 1-yr Reserved | 3-yr Reserved | Rackspace Spot | You save |
|---|---|---|---|---|---|---|
| US East, N. Virginia | $13.350 | $3.362 | $8.691 | $6.128 | ||
| US Central, Chicago | no AWS region | |||||
| US Central, Dallas | no AWS region | |||||
| Hong Kong | ||||||
| Sydney, Australia | $17.358 | $2.113 | $11.300 | $7.967 | ||
| London, UK | $16.947 | $4.666 | $11.032 | $7.779 | ||
| US West, San Jose | ||||||
| US Central, Dallas 2 | no AWS region | |||||
| US East, N. Virginia 2 | $13.350 | $3.362 | $8.691 | $6.128 |