r5b.4xlarge by Amazon Web Services
r5b.4xlarge is a Memory optimized Gen5 4xlarge server offered by Amazon Web Services with 16 vCPUs, 128 GiB of memory and 0 GB of storage. The pricing starts at 0.1408 USD per hour.
16 vCPU
128 GiB Memory
Spare SCore
13989
(All-cores)
(All-cores)
1328
(Single-core)
(Single-core)
Specifications
Server Metadata
Vendor ID | aws |
Name | r5b.4xlarge |
Description | Memory optimized Gen5 4xlarge |
Family | r5b |
Status | active |
Observed At | 2026-05-02T04:31:37.190248 |
Availability
| REGION / ID | SPOT | ONDEMAND |
|---|---|---|
Ohio (US) / us-east-2 | 0.547867 USD/h | 1.192 USD/h |
Oregon (US) / us-west-2 | 0.753633 USD/h | 1.192 USD/h |
Northern Virgina (US) / us-east-1 | 0.78405 USD/h | 1.192 USD/h |
Stockholm (SE) / eu-north-1 | 0.32175 USD/h | 1.2635 USD/h |
Quebec (CA) / ca-central-1 | 0.7537 USD/h | 1.304 USD/h |
Dublin (IE) / eu-west-1 | 0.7101 USD/h | 1.336 USD/h |
Milan (IT) / eu-south-1 | 0.1641 USD/h | 1.4 USD/h |
London (GB) / eu-west-2 | 0.6222 USD/h | 1.4 USD/h |
Singapore (SG) / ap-southeast-1 | 0.6315 USD/h | 1.424 USD/h |
Frankfurt (DE) / eu-central-1 | 0.683067 USD/h | 1.424 USD/h |
Seoul (KR) / ap-northeast-2 | 0.629133 USD/h | 1.424 USD/h |
Tokyo (JP) / ap-northeast-1 | 0.4474 USD/h | 1.448 USD/h |
Sydney (AU) / ap-southeast-2 | 0.673667 USD/h | 1.448 USD/h |
Sao Paulo (BR) / sa-east-1 | 1.060933 USD/h | 1.896 USD/h |
Processor
vCPUs | 16 |
Hypervisor | nitro |
CPU Allocation | Dedicated |
CPU Cores | 8 |
CPU Speed | 3.1 GHz |
CPU Architecture | x86_64 |
CPU Manufacturer | Intel |
CPU Family | Xeon |
CPU Model | 8259CL |
CPU L1D Cache | 32 KiB |
CPU L1D Cache Total | 256 KiB |
CPU L1I Cache | 32 KiB |
CPU L1I Cache Total | 256 KiB |
CPU L2 Cache | 1 MiB |
CPU L2 Cache Total | 8 MiB |
CPU L3 Cache | 36 MiB |
CPU L3 Cache Total | 36 MiB |
CPU Flags | fpu, vme, de, pse, tsc, msr, pae, mce, cx8, apic, sep, mtrr, pge, mca, cmov, pat, pse36, clflush, mmx, fxsr, sse, sse2, ss, ht, syscall, nx, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, nonstop_tsc, cpuid, aperfmperf, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, pti, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, mpx, avx512f, avx512dq, rdseed, adx, smap, clflushopt, clwb, avx512cd, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, ida, arat, pku, ospke, avx512_vnni |
System Resources and Accelerators
| MEMORY | |
|---|---|
Memory Amount | 128 GiB |
Memory Generation | DDR4 |
Memory Speed | 2933 Mhz |
| GPU | |
|---|---|
GPU Count | 0 |
GPUs |
| STORAGE | |
|---|---|
Storage Size | 0 GB |
Storages |
| NETWORK | |
|---|---|
Network Speed | 5 Gbps |
Inbound Traffic | 0 GB/month |
Outbound Traffic | 0 GB/month |
IPv4 | 0 |
Economics
Performance
Memory Bandwidth
Compression
OpenSSL
Geekbench Single-Core
Score: 1,133
Geekbench Multi-Core
Score: 6,974
Passmark CPU Scores
| BENCHMARK | SCORE |
|---|---|
Mark | 14306 |
Compression | 201443 |
Encryption | 6239 |
Extended Instructions | 12272 |
Floating Point Maths | 24301 |
Integer Maths | 45361 |
Physics | 1407 |
Prime Numbers | 75 |
Single Threaded | 1812 |
String Sorting | 23430 |
Passmark Memory Scores
| BENCHMARK | SCORE |
|---|---|
Memory Mark | 2187 |
Database Operations | 5120 |
Memory Latency | 61 |
Memory Read Cached | 22120 |
Memory Read Uncached | 8459 |
Memory Write | 7839 |
Stress-ng Raw Scores
Stress-ng Relative Multicore Performance
LLM Inference Speed for Prompt Processing
LLM Inference Speed for Text Generation
Static Web Server
Redis
Alternatives
Servers of the Same Family
| INSTANCE | vCPUs | MEMORY | GPUs |
|---|---|---|---|
| r5b.large | 2 | 16 GiB | 0 |
| r5b.xlarge | 4 | 32 GiB | 0 |
| r5b.2xlarge | 8 | 64 GiB | 0 |
| r5b.8xlarge | 32 | 256 GiB | 0 |
| r5b.12xlarge | 48 | 384 GiB | 0 |
| r5b.16xlarge | 64 | 512 GiB | 0 |
| r5b.24xlarge | 96 | 768 GiB | 0 |
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