Both VPS Mart and InterServer are squarely U.S.-focused providers — no global node options, no Asia-Pacific presence, no multi-region failover. If that geographic limitation works for your use case, the comparison gets interesting. These two are solving similar problems from very different angles.
The Windows VPS Case for VPS Mart
This is where VPS Mart has the clearest advantage. Windows Server licensing is bundled into every Windows VPS plan — no separate license fee, no surprise line item at checkout. Promotional pricing starts around $5.99/month, standard at $8.99/month, running on Hyper-V with full Administrator access and RDP enabled.
To understand why this matters, consider the alternative. Most providers that offer Windows VPS charge for the Windows Server license separately — typically $16 to $19/month or more on top of the VPS cost. For anyone running RDP remote desktop, .NET applications, or Windows-native trading software, VPS Mart's all-in pricing meaningfully lowers the entry cost. InterServer also offers Windows VPS, but the license is billed additionally, which pushes the total higher. If Windows Server is a hard requirement, VPS Mart wins this comparison on price without much debate.
Linux VPS: Different Pricing Logic, Different Use Cases
On the Linux side the gap narrows, and the choice comes down more to how you prefer to buy resources.
VPS Mart's Linux plans start at $2.99/month for 2 vCores, 4GB RAM, and 60GB SSD — generous specs for the price, with unlimited bandwidth and a U.S. static IP included across all plans. At around $4.99/month you get 3 vCores, 6GB RAM, and 100GB SSD. The specs look strong on paper.
InterServer takes a different approach entirely with its Slice system. One Slice is $6/month: 1 vCPU, 2GB RAM, 30GB SSD, 1TB bandwidth. Need more? Buy more Slices — two Slices doubles the resources, and so on. The flexibility is real. If you need exactly 2 vCPU and 4GB RAM, you buy two Slices for $12/month and you're done. No hunting for a plan tier that happens to match your requirements.
At the $6/month comparison point, VPS Mart's spec sheet looks considerably better — 4GB RAM versus InterServer's 2GB. But raw specs on a pricing page don't tell the full story. Single-core performance, actual disk I/O, and network throughput need to be benchmarked on real instances to make a reliable comparison. The paper gap is large; the real-world gap requires testing to confirm.
Price Lock and Long-Term Stability
InterServer's Price Lock Guarantee is worth calling out separately. Founded in 1999, the company has operated for over two decades and commits to not raising prices on existing plans — what you pay at signup is what you pay going forward. For anyone who's been burned by introductory pricing that doubles at renewal, that's a meaningful commitment.
VPS Mart is a newer brand under Database Mart LLC, with data centers in Dallas and Kansas City. It offers a 24-hour free trial, which InterServer doesn't. The managed support claim is prominent in VPS Mart's marketing, though independent verification of actual support quality is limited — the 24/7 commitment is there on paper, but take it with the usual grain of salt.
Network Coverage and Geographic Limits
VPS Mart operates in Dallas and Kansas City. InterServer runs nodes in New Jersey and Los Angeles. All four locations are in the U.S. — good for North American users, acceptable for Europe, noticeably slow for Asia. Neither provider is a serious option if your audience is primarily in Asia or if you need multi-region deployment. Vultr or DigitalOcean are the right answer for those requirements, not these two.
The Decision
VPS Mart is the stronger choice when Windows Server is the requirement — the bundled licensing makes it the most cost-efficient option in this price bracket for RDP and Windows-native workloads. For Linux, InterServer's Slice system offers flexibility that fixed-tier plans can't match, and the price lock adds long-term predictability that matters for projects with stable resource needs. If your workload needs global nodes, Kubernetes, or cloud-native tooling, neither provider belongs in the conversation — that's Vultr, DigitalOcean, or Hetzner territory.