r8a.12xlarge vs r7iz.12xlarge

Accelerators
Instance Type	r8a.12xlarge	r7iz.12xlarge
Instance Family	Memory optimized	Memory optimized
Details	High-performance databases, data mining/analysis, in-memory databases, distributed large-scale caches, real-time processing apps for unstructured big data, Hadoop/Spark clusters, and other enterprise apps. r – RAM / memory optimized 8 – Generation a – AMD processor 12xlarge – Size	High-performance databases, data mining/analysis, in-memory databases, distributed large-scale caches, real-time processing apps for unstructured big data, Hadoop/Spark clusters, and other enterprise apps. r – RAM / memory optimized 7 – Generation i – Intel processor z – High performance 12xlarge – Size
vCPUs	48	48
Memory	384 GiB	384 GiB
CPU Architecture	x86_64	x86_64
Processor	AMD EPYC 9R45 Processor	Intel Xeon Scalable (Sapphire Rapids)
Clock Speed	4.5 GHz	3.9 GHz
Threads Per Core	1	2
GPU	no	no
Inference Accelerator	no	no
FPGA	no	no
Instances
Sizes	r8a.12xlarge, r8a.16xlarge, r8a.24xlarge, r8a.2xlarge, r8a.48xlarge, r8a.4xlarge, r8a.8xlarge, r8a.large, r8a.medium, r8a.metal-24xl, r8a.metal-48xl, r8a.xlarge	r7iz.12xlarge, r7iz.16xlarge, r7iz.2xlarge, r7iz.32xlarge, r7iz.4xlarge, r7iz.8xlarge, r7iz.large, r7iz.metal-16xl, r7iz.metal-32xl, r7iz.xlarge
Generations	r5a.12xlarge, r6a.12xlarge, r7a.12xlarge, r8a.12xlarge
Variants	r8g.12xlarge, r8gb.12xlarge, r8gd.12xlarge, r8gn.12xlarge, r8i-flex.12xlarge, r8i.12xlarge, r8id.12xlarge	r7a.12xlarge, r7g.12xlarge, r7gd.12xlarge, r7i.12xlarge
Free Tier	no	no
Burstable	no	no
Hibernation	no	no
Instance Storage	EBS only	EBS only
EBS (Elastic Block Store)
EBS Optimized	default	default
Encryption	supported	supported
NVMe	required	required
Dedicated Throughput	15000 MBps	19000 MBps
Optimized Baseline Bandwidth	15000 Mbps	19000 Mbps
Optimized Baseline Throughput	1875 Mbps	2375 Mbps
Optimized Baseline Performance	60000 IOPS	76000 IOPS
Optimized Max Performance	60000 IOPS	76000 IOPS
Optimized Max Bandwidth	15000 Mbps	19000 Mbps
Optimized Max Throughput	1875 Mbps	2375 Mbps
Networking
Networking Performance	22500 Megabit	25000 Megabit
Enhanced Networking	yes	yes
Max Interfaces	12	8
Max Cards	1	1
IPv4 Addresses per Interface	64	30
IPv6 Addresses per Interface	64	30
IPv6 Support	yes	yes
ENA Support	required	required
EFA Support	no	no
Encryption in Transit Support	yes	yes
ENA SRD Support	no	yes
Avg Price Diff	1.00x	1.18x

Regional Prices

Geography	Region	r8a.12xlarge	r7iz.12xlarge
Hidden	Hidden (hidden-1)	4.2905	4.9920
Hidden	Hidden (hidden-2)	4.2905	5.4000
Hidden	Hidden (hidden-3)	4.6253	5.4480
US	US East (Ohio) (us-east-2)	3.8342	4.4640
US	US East (Virginia) (us-east-1)	3.8342	4.4640
US	US West (Oregon) (us-west-2)	3.8342	4.4640