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c8i-flex EC2 instance family

Intel Xeon 6975P-C at 3.9 GHz, x86_64, 2 to 64 vCPUs, 4 to 128 GiB

Prices Description Specs Performance ranking Available Regions Prices by region
Open c8i-flex in the finder →
c8i-flex prices per hour on Linux/UNIX, each type in its cheapest region
Type vCPU Memory Typical spot On-demand Cheapest region Per vCPU-hour
c8i-flex.large2 vCPU, 4 GiB 2 4 GiB $0.00890 $0.0890 ap-south-2 of 20 $0.00445
c8i-flex.xlarge4 vCPU, 8 GiB 4 8 GiB $0.0178 $0.1780 ap-south-2 of 20 $0.00445
c8i-flex.2xlarge8 vCPU, 16 GiB 8 16 GiB $0.0356 $0.3561 ap-south-2 of 20 $0.00445
c8i-flex.4xlarge16 vCPU, 32 GiB 16 32 GiB $0.0712 $0.7122 ap-south-2 of 20 $0.00445
c8i-flex.8xlarge32 vCPU, 64 GiB 32 64 GiB $0.1424 $1.424 ap-south-2 of 20 $0.00445
c8i-flex.12xlarge48 vCPU, 96 GiB 48 96 GiB $0.2136 $2.136 ap-south-2 of 20 $0.00445
c8i-flex.16xlarge64 vCPU, 128 GiB 64 128 GiB $0.3056 $3.056 eu-south-2 of 20 $0.00477

Per hour on Linux/UNIX, in each type's cheapest region. Typical spot: per pricing run of the last 7 days, the cheapest zone's spot price, averaged, as the finder shows it with that region selected. On-demand: the same region's price. Per vCPU-hour: the spot price, or without spot the on-demand price, per vCPU. Every region is under Prices by region.

The C8i-flex instance family, generally available since October 6, 2025, features custom Intel Xeon 6 processors with a sustained all-core turbo frequency of 3.9 GHz. These compute-optimized instances deliver up to 15% better price performance compared to previous generation instances. C8i-flex instances support up to 30 Gbps of networking bandwidth and up to 20 Gbps of EBS bandwidth. They do not offer instance storage and are built on the AWS Nitro System.

Written by Gemini from web sources and not checked: the specs and prices on this page come from AWS.

Instance Types
c8i-flex.large c8i-flex.xlarge c8i-flex.2xlarge c8i-flex.4xlarge c8i-flex.8xlarge c8i-flex.12xlarge c8i-flex.16xlarge
vCPUs
2 to 64
Memory
4 to 128 GiB
Architecture
x86_64
Processor
Intel Xeon 6975P-C
Sustained clock
3.9 GHz
Single-thread PassMark
3256 estimated from m8i (same CPU)
Specs of each type
Type vCPU Memory Local storage Network EBS
c8i-flex.large 2 4 GiB EBS only up to 12.5 (0.468 baseline) up to 10 (0.315 baseline)
c8i-flex.xlarge 4 8 GiB EBS only up to 12.5 (0.937 baseline) up to 10 (0.63 baseline)
c8i-flex.2xlarge 8 16 GiB EBS only up to 15 (1.875 baseline) up to 10 (1.25 baseline)
c8i-flex.4xlarge 16 32 GiB EBS only up to 15 (3.75 baseline) up to 10 (2.5 baseline)
c8i-flex.8xlarge 32 64 GiB EBS only up to 15 (7.5 baseline) up to 10 (5 baseline)
c8i-flex.12xlarge 48 96 GiB EBS only up to 22.5 (11.25 baseline) up to 15 (7.5 baseline)
c8i-flex.16xlarge 64 128 GiB EBS only up to 30 (15 baseline) up to 20 (10 baseline)

Network and EBS: peak bandwidth in Gbit/s, with the bandwidth the type sustains when it is lower. Local storage: the instance store, in decimal GB as AWS sizes it.

Ranked by PassMark single-thread score
All x86_64 arm64
#1
m8azn, x8aedz
4257
#3
m8a, c8a, hpc8a, r8a
3803 3801–3803
#7
m8i, m8ib, m8id, m8in, m8idb, m8idn, m8ine, m8i-flex, c8i, c8i-flex, c8ib, c8id, c8in, c8ine, r8i, r8i-flex, r8ib, r8id, r8idb, r8idn, r8in, t8i, x8i
3271 3243–3271
#30
i7i, r7iz
3115 3105–3115
#32
m7a, c7a, c7i, hpc7a, r7a
2955 2875–2955
#37
m7i, r7i
2816 2763–2816
#39
c7i-flex
2700
#40
m6a, m5zn, m7i-flex, c6a, hpc6a, i7ie, r6a, x2iezn
2596 2549–2596
#48
m6i, m6id, m6in, m6idn, c6i, c6id, c6in, hpc6id, i4i, r6i, r6id, r6idn, r6in, x2idn, x2iedn, z1d
2303 2269–2303
#64
c5a, c5ad, c5d
2034 1995–2034
#67
m5d, c5, c5n
1901 1853–1901
#70
m5dn, c4, r5dn, r5n, t2, t3
1777 1746–1777
#76
m5, m5n, i3en, r5, r5b, r5d
1703 1686–1703
#82
m4, c3, i3
1625 1582–1625
#85
r3, r4
1539 1525–1539
#87
m5a, m5ad, r5a, r5ad, t3a
1414 1388–1414

Not benchmarked yet 44

These families have no PassMark single-thread score yet, so they are not ranked.

c1, d2, d3, d3en, dl2q, f2, g4dn, g5, g6, g6e, g6f, g7, g7e, gr6, gr6f, h1, i2, inf1, inf2, m1, m2, m3, mac1, p3dn, p4d, p4de, p5, p5en, p6-b200, p6-b300, t1, trn1, trn1n, u-3tb1, u-6tb1, u7i-12tb, u7i-6tb, u7i-8tb, u7in-16tb, u7in-24tb, u7in-32tb, vt1, x1, x1e

20 regions with a price in the last 7 days. Select up to 4 to compare them in the price history charts under Prices by region.

Atom feed for new regions

Each type's regions on Linux/UNIX, cheapest first, with the same figures as the Prices table, and its price history: the daily mean of every zone and pricing run, over the last 15 UTC days. Each price column is tinted from its cheapest region (green) to its most expensive (red).

c8i-flex.large2 vCPU, 4 GiB, 20 regions
c8i-flex.large prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
ap-south-2 Hyderabad $0.00890 $0.0890 90%
ap-northeast-2 Seoul $0.0101 $0.1006 90%
eu-south-2 Spain $0.0121 $0.0955 87%
ap-south-1 Mumbai $0.0187 $0.0890 79%
us-east-2 Ohio $0.0211 $0.0890 76%
ap-southeast-5 Malaysia $0.0246 $0.0872 72%
sa-east-1 São Paulo $0.0255 $0.1372 81%
us-west-2 Oregon $0.0278 $0.0890 69%
af-south-1 Cape Town $0.0279 $0.1194 77%
us-east-1 N. Virginia $0.0283 $0.0890 68%
us-west-1 N. California $0.0294 $0.1110 73%
eu-west-2 London $0.0299 $0.1058 72%
ca-central-1 Canada Central $0.0344 $0.0974 65%
ap-southeast-6 New Zealand $0.0358 $0.1221 71%
eu-west-3 Paris $0.0366 $0.1058 65%
eu-central-1 Frankfurt $0.0385 $0.1016 62%
ap-southeast-1 Singapore $0.0401 $0.1026 61%
ap-northeast-1 Tokyo $0.0418 $0.1121 63%
eu-west-1 Ireland $0.0421 $0.0955 56%
ap-southeast-2 Sydney $0.0448 $0.1163 61%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
c8i-flex.xlarge4 vCPU, 8 GiB, 20 regions
c8i-flex.xlarge prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
ap-south-2 Hyderabad $0.0178 $0.1780 90%
ap-northeast-2 Seoul $0.0236 $0.2011 88%
eu-south-2 Spain $0.0243 $0.1910 87%
us-east-2 Ohio $0.0477 $0.1780 73%
ap-southeast-5 Malaysia $0.0482 $0.1745 72%
ap-south-1 Mumbai $0.0550 $0.1780 69%
sa-east-1 São Paulo $0.0615 $0.2744 78%
us-west-1 N. California $0.0628 $0.2220 72%
ap-southeast-6 New Zealand $0.0681 $0.2441 72%
us-west-2 Oregon $0.0709 $0.1780 60%
us-east-1 N. Virginia $0.0713 $0.1780 60%
eu-west-2 London $0.0728 $0.2116 66%
ca-central-1 Canada Central $0.0743 $0.1948 62%
af-south-1 Cape Town $0.0769 $0.2388 68%
eu-west-3 Paris $0.0838 $0.2116 60%
ap-southeast-1 Singapore $0.0919 $0.2053 55%
ap-northeast-1 Tokyo $0.0944 $0.2241 58%
eu-west-1 Ireland $0.0944 $0.1910 51%
ap-southeast-2 Sydney $0.0955 $0.2325 59%
eu-central-1 Frankfurt $0.0990 $0.2032 51%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
c8i-flex.2xlarge8 vCPU, 16 GiB, 20 regions
c8i-flex.2xlarge prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
ap-south-2 Hyderabad $0.0356 $0.3561 90%
eu-south-2 Spain $0.0389 $0.3820 90%
ap-northeast-2 Seoul $0.0402 $0.4022 90%
ap-south-1 Mumbai $0.0673 $0.3561 81%
sa-east-1 São Paulo $0.0838 $0.5488 85%
us-east-2 Ohio $0.0893 $0.3561 75%
ap-southeast-5 Malaysia $0.0972 $0.3490 72%
af-south-1 Cape Town $0.1165 $0.4776 76%
eu-west-2 London $0.1221 $0.4231 71%
ca-central-1 Canada Central $0.1351 $0.3896 65%
ap-southeast-6 New Zealand $0.1363 $0.4883 72%
us-east-1 N. Virginia $0.1448 $0.3561 59%
us-west-1 N. California $0.1459 $0.4441 67%
eu-central-1 Frankfurt $0.1512 $0.4064 63%
us-west-2 Oregon $0.1540 $0.3561 57%
eu-west-3 Paris $0.1554 $0.4231 63%
ap-southeast-1 Singapore $0.1686 $0.4106 59%
ap-northeast-1 Tokyo $0.1724 $0.4483 62%
ap-southeast-2 Sydney $0.1734 $0.4650 63%
eu-west-1 Ireland $0.1932 $0.3821 49%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
c8i-flex.4xlarge16 vCPU, 32 GiB, 20 regions
c8i-flex.4xlarge prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
ap-south-2 Hyderabad $0.0712 $0.7122 90%
eu-south-2 Spain $0.0788 $0.7641 90%
ap-northeast-2 Seoul $0.1363 $0.8044 83%
us-east-2 Ohio $0.1385 $0.7122 81%
sa-east-1 São Paulo $0.1672 $1.098 85%
ap-northeast-1 Tokyo $0.1844 $0.8966 79%
ap-southeast-5 Malaysia $0.1931 $0.6980 72%
ap-south-1 Mumbai $0.2112 $0.7122 70%
us-west-1 N. California $0.2171 $0.8882 76%
af-south-1 Cape Town $0.2389 $0.9552 75%
ca-central-1 Canada Central $0.2542 $0.7792 67%
ap-southeast-6 New Zealand $0.2742 $0.9766 72%
eu-west-3 Paris $0.2793 $0.8462 67%
eu-west-2 London $0.2808 $0.8462 67%
us-west-2 Oregon $0.2908 $0.7122 59%
us-east-1 N. Virginia $0.2979 $0.7122 58%
ap-southeast-2 Sydney $0.3049 $0.9301 67%
ap-southeast-1 Singapore $0.3111 $0.8212 62%
eu-central-1 Frankfurt $0.3113 $0.8127 62%
eu-west-1 Ireland $0.4272 $0.7642 44%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
c8i-flex.8xlarge32 vCPU, 64 GiB, 20 regions
c8i-flex.8xlarge prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
ap-south-2 Hyderabad $0.1424 $1.424 90%
eu-south-2 Spain $0.1528 $1.528 90%
ap-northeast-2 Seoul $0.2127 $1.609 87%
us-east-2 Ohio $0.2940 $1.424 79%
sa-east-1 São Paulo $0.3776 $2.195 83%
af-south-1 Cape Town $0.3909 $1.910 80%
ap-southeast-5 Malaysia $0.3939 $1.396 72%
ca-central-1 Canada Central $0.5104 $1.558 67%
ap-south-1 Mumbai $0.5210 $1.424 63%
us-west-2 Oregon $0.5304 $1.424 63%
eu-west-2 London $0.5903 $1.692 65%
ap-southeast-6 New Zealand $0.5953 $1.953 70%
eu-west-3 Paris $0.6017 $1.692 64%
us-east-1 N. Virginia $0.6250 $1.424 56%
ap-northeast-1 Tokyo $0.6442 $1.793 64%
us-west-1 N. California $0.6483 $1.776 64%
ap-southeast-1 Singapore $0.6823 $1.642 58%
eu-central-1 Frankfurt $0.7216 $1.625 56%
ap-southeast-2 Sydney $0.7231 $1.860 61%
eu-west-1 Ireland $0.7860 $1.528 49%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
c8i-flex.12xlarge48 vCPU, 96 GiB, 20 regions
c8i-flex.12xlarge prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
ap-south-2 Hyderabad $0.2136 $2.136 90%
eu-south-2 Spain $0.2408 $2.292 89%
ap-northeast-2 Seoul $0.2413 $2.413 90%
sa-east-1 São Paulo $0.4285 $3.293 87%
af-south-1 Cape Town $0.4551 $2.866 84%
us-east-2 Ohio $0.5047 $2.136 76%
ca-central-1 Canada Central $0.5148 $2.338 78%
ap-southeast-5 Malaysia $0.5829 $2.094 72%
ap-south-1 Mumbai $0.6796 $2.136 68%
eu-west-3 Paris $0.6806 $2.539 73%
us-west-2 Oregon $0.6953 $2.136 67%
ap-northeast-1 Tokyo $0.7226 $2.690 73%
us-west-1 N. California $0.7482 $2.664 72%
us-east-1 N. Virginia $0.7653 $2.136 64%
ap-southeast-2 Sydney $0.8503 $2.790 70%
ap-southeast-1 Singapore $0.8662 $2.464 65%
eu-west-2 London $0.9047 $2.539 64%
ap-southeast-6 New Zealand $0.9227 $2.930 69%
eu-central-1 Frankfurt $1.003 $2.438 59%
eu-west-1 Ireland $1.043 $2.292 54%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
c8i-flex.16xlarge64 vCPU, 128 GiB, 20 regions
c8i-flex.16xlarge prices per hour on Linux/UNIX, by region, cheapest first
Region Typical spot On-demand Spot saving
eu-south-2 Spain $0.3056 $3.056 90%
ap-northeast-2 Seoul $0.3284 $3.218 90%
sa-east-1 São Paulo $0.6179 $4.391 86%
us-east-2 Ohio $0.6224 $2.849 78%
af-south-1 Cape Town $0.6812 $3.821 82%
ap-south-2 Hyderabad $0.6872 $2.849 76%
us-east-1 N. Virginia $0.7865 $2.849 72%
ca-central-1 Canada Central $0.7958 $3.117 74%
us-west-2 Oregon $0.8618 $2.849 70%
ap-south-1 Mumbai $0.9216 $2.849 68%
ap-southeast-5 Malaysia $0.9403 $2.792 66%
ap-southeast-1 Singapore $0.9773 $3.285 70%
eu-west-2 London $1.078 $3.385 68%
ap-southeast-6 New Zealand $1.095 $3.906 72%
us-west-1 N. California $1.216 $3.553 66%
eu-central-1 Frankfurt $1.336 $3.251 59%
eu-west-3 Paris $1.443 $3.385 57%
eu-west-1 Ireland $1.462 $3.057 52%
ap-northeast-1 Tokyo $1.560 $3.586 56%
ap-southeast-2 Sydney $2.352 $3.720 37%
Solid: spot, the daily mean of all zones (the typical spot above takes the cheapest zone). Dashed: on-demand. UTC days.
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