cache.r6g.4xlarge pricing and specs in EU (Ireland)
16 vCPU · 105.81 GiB · Up to 10 Gigabit · graviton Graviton
$1.8320/hour on-demand · $1,337/month (Redis, Default)
cache.r6g.4xlarge is a memory-optimized ElastiCache instance with 16 vCPU and 105.81 GiB, generation 6 of the r family on AWS Graviton (Arm). On-demand it costs $1.8320 an hour, about $1,337 a month if it runs all month. A one-year commitment with nothing up front works out at $1.2510 an hour and pays for itself above roughly 498 hours a month; below that, on-demand is cheaper. The three-year options go down to $0.8264 an hour, 55% below on-demand. The newer cache.r7g.4xlarge offers the same size for $1.9470 an hour, 6% more. Across regions the cheapest place to run cache.r6g.4xlarge is US East (N. Virginia) (us-east-1) at $1.6420 an hour, 10% below EU (Ireland).
Pricing by engine (hourly, USD, Default)
| Option | Redis | Valkey | Memcached |
|---|---|---|---|
| On-Demand | $1.8320 | $1.4656 | $1.8320 |
| 1y Std RI NU | $1.2510 | $1.0008 | $1.2510 |
| 1y Std RI PU | $1.1913 | $0.9531 | $1.1913 |
| 1y Std RI AU | $1.1668 | $0.9334 | $1.1668 |
| 3y Std RI NU | $0.9500 | $0.7600 | $0.9500 |
| 3y Std RI PU | $0.8796 | $0.7037 | $0.8796 |
| 3y Std RI AU | $0.8264 | $0.6612 | $0.8264 |
Newer generations of the same size
Same family letter and size in a newer generation, ranked by price. “vCPU per $” uses vCPU as the performance proxy — newer chips usually add more, so it is a floor.
Already Graviton| Type | $/h | Price Δ | vCPU per $ Δ | Saves / mo |
|---|---|---|---|---|
| cache.r7g.4xlarge Graviton | $1.9470 | +6% | -6% | $-84 |
| cache.r6gd.4xlarge Graviton | $3.4810 | +90% | -47% | $-1,204 |
Cheapest regions for cache.r6g.4xlarge
| Region | On-Demand $/h | vs eu-west-1 | Saves / mo |
|---|---|---|---|
| US East (N. Virginia) us-east-1 | $1.6420 | -10% | $139 |
| US East (Ohio) us-east-2 | $1.6420 | -10% | $139 |
| US West (N. California) us-west-1 | $1.6420 | -10% | $139 |
| US West (Oregon) us-west-2 | $1.6420 | -10% | $139 |
| Asia Pacific (Malaysia) ap-southeast-5 | $1.6740 | -9% | $115 |
| Asia Pacific (Thailand) ap-southeast-7 | $1.6740 | -9% | $115 |
Caveat: instance price is only part of the bill. Cross-region and internet data transfer, latency to your users, data-residency rules and service availability can outweigh a few percent on compute.
Price history (eu-west-1)
Daily snapshots since the catalog started tracking this type; a row is added whenever a headline price changes.
| Date | OD Redis | OD Windows | 1y RI | 3y RI | Spot p50 |
|---|---|---|---|---|---|
| 2026-09-22 | $1.8320 | — | $1.2510 | $0.9500 | — |
All attributes
- vCPU
- 16
- Cores / threads per core
- —
- Memory
- 105.81 GiB
- Memory per vCPU
- 6.61 GiB
- Processor
- graviton
- Architecture
- —
- Sustained clock
- —
- Hypervisor
- —
- Generation
- Current
- Burstable
- No
- Bare metal
- No
- Free tier eligible
- No
- Network performance
- Up to 10 Gigabit
- Network baseline / burst
- —
- Max ENIs × IPv4 per ENI
- —
- IPv6 / ENA / EFA
- — / — / —
- EBS optimized
- —
- EBS bandwidth (baseline / max)
- —
- EBS IOPS (baseline / max)
- —
- EBS NVMe
- —
- Instance storage
- EBS only
- GPU
- —
- Placement groups
- —
- Hibernation / Nitro Enclaves
- — / —
- Dedicated hosts
- —
- Boot modes
- —
- Spot supported
- —
Public AWS list prices (USD), refreshed nightly (catalog 2026-11-06). RI and Savings Plan rates are effective hourly (upfront amortised over the term) and are charged for every hour of the term. Excludes taxes, data transfer and storage. How these numbers are sourced and checked. Not affiliated with Amazon Web Services.
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