Instances›AWS EC2›m8id›m8id.metal-48xl
Compute
vCPUs192
Memory768 GiB
Mem / vCPU4.00 GiB
ProcessorXeon Scalable
Clock speed3.9 GHz
Architecturex86_64
Storage
Type3 × 3,800 GB NVMe SSD
Bandwidth60,000 Mbps
Throughput7500 MB/s
IOPS240,000
Networking
Performance75 Gigabit
Max ENIs24
IPv6Yes
GPUNone
Family sizes
m8id.large2 vCPU · 8 GiB
m8id.xlarge4 vCPU · 16 GiB
m8id.2xlarge8 vCPU · 32 GiB
m8id.4xlarge16 vCPU · 64 GiB
m8id.8xlarge32 vCPU · 128 GiB
m8id.12xlarge48 vCPU · 192 GiB
m8id.16xlarge64 vCPU · 256 GiB
m8id.24xlarge96 vCPU · 384 GiB
m8id.32xlarge128 vCPU · 512 GiB
m8id.48xlarge192 vCPU · 768 GiB
m8id.metal-48xl192 vCPU · 768 GiB
m8id.96xlarge384 vCPU · 1536 GiB
m8id.metal-96xl384 vCPU · 1536 GiB
m8id.metal-48xl

The m8id.metal-48xl pairs 192 vCPU with 768 GiB of RAM, the 4.00 GiB-per-vCPU ratio that marks a general-purpose instance. In the name, "m" is the general-purpose line, "8" is the generation, "id" marks Intel processors and local NVMe storage and "metal-48xl" is the size within the m8id family. It runs on Intel Xeon Scalable (Granite Rapids) at 3.9 GHz, and AWS introduced it in February 2026. AWS has since shipped m9g; m9g.metal-48xl is the direct replacement at this size. Spot's node ladder tops out below this size, so m8id.metal-48xl becomes 12 × gp.vs2.2xlarge (192 vCPU, 768 GiB combined), $12.53/hr on AWS in US East (N. Virginia), from $0.492/hr on Rackspace Spot. Spot delivers compute as managed Kubernetes, so a node pool of that size is the native shape of the answer rather than a workaround — provided the workload scales horizontally.

Match qualityVirtualised, not bare metal

m8id.metal-48xl is a full physical server — no virtualisation layer in the way, direct access to the hardware, and a socket count that licensing can verify.

Rackspace Spot no longer sells bare metal; everything in the catalog is a virtual machine. You get the same cores and memory (12 × gp.vs2.2xlarge, 192 vCPU, 768 GiB), but not the dedicated hardware. If you picked m8id.metal-48xl because you needed the real machine — nested virtualisation, per-socket licensing, low-level profiling — this is not a replacement at any price. If you picked it because it is the biggest m8id, it is the same compute for a lot less.

Runs as a fleetNo single Spot node has 192 vCPU; the largest comparable one has 16. So this runs as 12 nodes. That works if your workload already spreads across machines, and doesn't if one process needs all the cores together.
No local diskm8id.metal-48xl comes with 3 × 3,800 GB NVMe SSD attached to the machine. Spot nodes use network storage only, so that disk doesn't come with it. If you were using it as fast scratch space, you'd move to a persistent volume or object storage, which are slower to read.
Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$12.530$2.585$0.492
$12.038 savings
US Central, Chicagono AWS region$0.492
US Central, Dallasno AWS region$0.612
Hong Kong$0.132
Sydney, Australia$15.745$3.816$1.932
$13.813 savings
London, UK$14.526$1.730$2.652
$11.874 savings
US West, San Jose$1.812
US Central, Dallas 2no AWS region$0.012
US East, N. Virginia 2$12.530$2.585$1.812
$10.718 savings
When to use it
Good for
  • ●Development, staging and CI environments
  • ●Small to mid-size relational databases
  • ●Backend services with no single dominant resource
  • ●Workloads that fit inside 768 GiB of RAM
  • ●Jobs that want 3 × 3,800 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at 75 Gigabit
  • ●Anything that shards cleanly across 12 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●The working set needs more than 768 GiB of RAM
  • ●You need dedicated hardware. Rackspace Spot sells virtualised compute only.
  • ●Sustained full-core CPU load. A compute-optimized family costs less per unit of work.
  • ●More than 4.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●The work is single-threaded. Most of these 192 vCPU would sit idle.
  • ●GPU or FPGA acceleration is needed
$9,147/mo on AWS on-demand against $359/mo on Rackspace Spot for the 12-node equivalent — market-priced, not list-priced.
  • Spot sells spare capacity at market prices. It is the cheapest compute on the internet.
  • Prices are set by supply and demand. You pay what the market decides.
  • Compute is delivered as fully managed Kubernetes. All infrastructure is taken care of.
  • Egress costs $0.01/GB after the free allowance. AWS charges $0.09/GB.
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