Compute C3 virtual servers are suitable for most workloads, from production to development and testing. They feature high performance CPUs with balanced RAM configurations, all fully reserved and not shared between VMs. They are the best choice for production workloads due to their predictable behavior, performance, and reliability.
Compute C3
General purpose virtual servers for common workloads
Compute C3 Features
Intel Xeon 'Sapphire Rapids' Processors
C3 virtual servers are powered by Intel Xeon Platinum 'Sapphire Rapids' CPUs, providing modern CPU instructions such as AVX512-FP16 vector processing, and AMX for matrix processing used in AI/ML inferencing on CPUs. Fully supported by modern 64-bit x86 operating systems.
Fully dedicated resources
Virtual CPUs and memory are fully reserved and never shared with another VM, no oversubscription and no sharing of caches or execution. Virtual CPUs are "pinned" to specific physical CPUs to ensure low latency in execution.
Broad Virtual Server Sizing
Compute C3 covers sizing from 4 to 96 vCPU, with a consistent amount of memory per vCPU over the whole range.
High-speed Networking
All Compute C3 virtual servers have access to 25GBit/s networking, and benefit from all the features of our Networking services including Security Groups.
Billed By The Hour
All Compute C3 virtual servers are billed on an hourly basis, pay for what you use and you're not locked into long term commitments. Shelve unused servers and pay no compute charges, able to be unshelved to be used when needed.
Prices
General Images
Prices for Compute C3 virtual servers using community supported Linux images, images you have uploaded into Catalyst Cloud, and any images with "Bring Your Own Support" license terms.
| Flavour | vCPU | RAM | Price per hour (ex GST) | Price per month (ex GST) |
|---|---|---|---|---|
| c3.c4r16 | 4 | 16 | $0.4357 | $318.06 |
| c3.c8r32 | 8 | 32 | $0.8713 | $636.05 |
| c3.c16r64 | 16 | 64 | $1.7427 | $1,272.17 |
| c3.c32r128 | 32 | 128 | $3.4853 | $2,544.27 |
| c3.c64r256 | 64 | 256 | $6.9707 | $5,088.61 |
| c3.c96r384 | 96 | 384 | $10.4560 | $7,632.88 |
Notes:
- Monthly prices are based on an approximation of 730 hours per month. Actual price charged each month depends on the number of hours in the month.
- All licenses required are your responsibility to obtain and comply with where needed, whether the image is provided by Catalyst Cloud or you have uploaded an image.
- Prices correct as of 1 July 2025.
Windows Images
Compute C3 virtual servers using Windows images available via Catalyst Cloud, using bundled license and supported by Silicon Systems. These prices apply only to Windows OS images, not images that include SQL Server in any edition.
| Flavour | vCPU | RAM | License per hour (ex GST) | Total per hour (ex GST) | Total Per Month (ex GST) |
|---|---|---|---|---|---|
| c3.c4r16 | 4 | 16 | $0.0808 | $0.5165 | $377.05 |
| c3.c8r32 | 8 | 32 | $0.1616 | $1.0329 | $754.02 |
| c3.c16r64 | 16 | 64 | $0.3233 | $2.0660 | $1,508.18 |
| c3.c32r128 | 32 | 128 | $0.6466 | $4.1319 | $3,016.29 |
| c3.c64r256 | 64 | 256 | $1.2932 | $8.2639 | $6,032.65 |
| c3.c96r384 | 96 | 384 | $1.9397 | $12.3957 | $9,048.86 |
Notes:
- Discounts do not apply to licenses for Windows.
- Support for these images is provided by Silicon Systems, not Catalyst Cloud.
- You are responsible for ensuring all terms of the license is met at all times.
- Month pricing is an estimate based on 730 hours per month. Actual price charged will depend on the number of hours in the month.
- Prices correct as of 1 July 2025.
Windows Images with SQL Server Standard
Compute C3 virtual servers using Windows with SQL Server Standard Edition images, bundled license. These images are provided and supported by Silicon Systems.
| Flavour | vCPU | RAM | License per hour (ex GST) | Total per hour (ex GST) | Total per month (ex GST) |
|---|---|---|---|---|---|
| c3.c4r16 | 4 | 16 | $2.4013 | $2.8370 | $2,071.01 |
| c3.c8r32 | 8 | 32 | $4.8027 | $5.6740 | $4,142.02 |
| c3.c16r64 | 16 | 64 | $9.6055 | $11.3482 | $8,284.19 |
| c3.c32r128 | 32 | 128 | $19.2110 | $22.6963 | $16,568.30 |
| c3.c64r256 | 64 | 256 | $38.4220 | $45.3927 | $33,136.67 |
| c3.c96r384 | 96 | 384 | $57.6329 | $68.0889 | $49,704.90 |
Notes:
- Discounts do not apply to Windows or Windows SQL Server licenses.
- These images are supported by Silicon Systems, not Catalyst Cloud.
- The monthly price is an estimate based on 730 hours per month. Actual billed for a month depends on the number of hours in that month.
- Small instance sizes may not be fully supported by Windows SQL Server Standard.
- Prices correct as of 1 July 2025.
Windows Images with SQL Server Web Edition
Windows OS and SQL Server Web Edition images are provided and supported by Silicon Systems. The license bundled with these images is charged on the number of vCPU the C1 instance has, in increments of 2 vCPU, with a minimum of 4 vCPU charged, at $0.0339 per 2 vCPU per hour, in addition to the Windows Image charges above.
For example, a c3.c4r16 SQL Web image is charged $0.5165 for this instance with a Windows OS license per hour and a further $0.0678 per hour for SQL Server Web Edition licenses, for a total of $0.5843 per hour excluding GST.
Note: No discounts apply to the license part of these charges. These images are not supported by Catalyst Cloud, support is provided by Silicon Systems. There are minimum vCPU and RAM requirements for SQL Server Web Edition which need to be met, you will be charged even if the size you have chosen does not meet SQL Web Edition's minimum sizes.
Prices correct as of 1 July 2025.