What's New on RigSync - July 2026

What's New on RigSync: July 2026

Compatibility checkers answer one question: will this part work? Socket match, memory type, PSU wattage — the basics. That's the right place to start, but it's not the whole story.

The harder question is whether parts work together well. A GPU and an NVMe adapter might both install without error on the same board, then quietly share PCIe lanes in a way that cuts the GPU's electrical bandwidth in half. A multi-drive NVMe expansion card might seat physically in a slot that doesn't support the bifurcation it needs — and half its drives will be inaccessible. Both scenarios pass a basic compatibility check. Neither one is a build you want to buy.

That gap between compatible and optimal is what this update addresses.

This update includes:

• Live PCIe topology visualizer
• Manual PCIe slot selection
• New PCIe warning system
• Expansion card support
• Physical fit checks
• Multi-instance components
• Newegg pricing integration

The Build Topology Visualizer

The Component Browser now includes a Build Topology panel. It's a live diagram of every PCIe slot, M.2 slot, DIMM slot, and SATA port on your selected motherboard, updated in real time as you add or remove components.

Color tells you the state at a glance: empty slots are neutral, occupied slots display their effective bandwidth, disabled slots (sharing lanes with something you've already installed) are flagged, and physically blocked slots — where a GPU's body physically covers an adjacent slot — are marked too. Hover over any occupied slot to see exactly which component is installed there.

This isn't a static marketing diagram of the board. It's the actual lane assignment the system uses internally, made visible. When you add a second GPU and slot assignments shift, you see it happen. When an NVMe adapter competes with a GPU for CPU-routed lanes, you see which one moved to the chipset. The topology panel makes those interactions visible before you've bought anything.

The topology panel currently supports sTR5, AM5 and LGA1851 platforms. Support for additional platforms is in progress.

The PCIe Warning System

Alongside the visualizer, the Component Browser now surfaces topology warnings — a separate category of checks that run after basic compatibility passes.

These are different from compatibility errors. An error means something won't work. A topology warning means something works, but not the way you'd expect — or works, but only if you understand a constraint the part itself won't tell you about.

Six checks run automatically for every build:

PCIe bandwidth reduction — If your GPU or expansion card is running at fewer lanes or a lower PCIe generation than it was designed for (x8 instead of x16, or PCIe 4 instead of PCIe 5), the warning identifies what's limiting it, calculates the bandwidth loss percentage, and distinguishes whether the CPU or the motherboard is the constraint.

M.2 slot downshift — Some CPUs reduce the PCIe generation available to M.2 slots below what the motherboard's native spec would provide. If your NVMe drive is running slower than it should because of a CPU-specific lane limitation, this flags it.

Slot conflicts — PCIe slots frequently share electrical lanes. Installing a GPU can disable an M.2 slot, reduce an adjacent PCIe slot from x4 to x1, or take a SATA port offline. The warning surfaces all of those interactions — both the slot that was disabled and the component that caused it.

Chipset uplink saturation — The chipset connects to the CPU through a fixed-bandwidth link. Fill enough chipset-routed slots and that link becomes the bottleneck for all of them simultaneously. When your installed devices have a combined throughput that significantly exceeds the uplink, the warning appears with context on how heavy real-world usage would need to be before you'd feel it.

PCIe bifurcation — NVMe adapters that support multiple M.2 drives without a PLX switch require the motherboard slot to support bifurcation — splitting one x16 connection into multiple independent x4 channels. Not every slot supports it, and some that do require a specific CPU generation. This checks both the slot and the CPU before you buy.

Expansion card bandwidth — An expansion card running at fewer lanes than its design spec — because it was pushed to a chipset slot after a GPU claimed the CPU-routed ones — is flagged with the lane loss percentage. For NVMe adapters, the warning notes that drives installed on the card may not reach their rated speeds.

Every topology warning now includes a Learn More button that links directly to the relevant section of Understanding PCIe Topology Warnings — a standalone guide covering PCIe lanes, lane sources, generations, slot conflicts, bifurcation, and chipset uplinks in plain language. The button is contextual: a bifurcation warning links to the bifurcation section, a slot conflict links to the slot conflict section, and so on. The goal is to make the warning self-explanatory for builders who want to go deeper, without cluttering the panel for those who don't.

Expansion Cards

The Component Browser now includes a dedicated Expansion Card category. Currently this covers PCIe NVMe adapters — cards that add M.2 drive slots when the motherboard's native slots are full.

These are particularly relevant for workstation and content creation builds where storage capacity matters. A board with two native M.2 slots can become a board with six when you add a four-drive NVMe adapter in a PCIe x16 slot. The topology system validates the placement fully: lane availability, bifurcation support, effective bandwidth, and whether the card ends up in a slot that can actually service what's installed on it.

Cards with a PLX switch chip (PCIe switch) are handled differently — a PLX switch multiplexes lanes internally and removes the bifurcation requirement entirely, which the system accounts for automatically.

More expansion card types will follow as the catalog grows.

Physical Fit Checks

Alongside the topology panel, the compatibility checker now validates the physical footprint of every PCIe device — not just whether there's an electrical slot available, but whether the card's body actually fits on the board.

Two specific checks run whenever GPUs or expansion cards are in the build:

Physical slot blocking — A wide GPU (2.5-slot, 3-slot, 3.5-slot) covers the slot openings immediately below it on the motherboard. Any component that would need one of those blocked slots gets a warning that it can't be physically installed alongside the GPU already in the build. The topology visualizer shows blocked slots in a distinct state; the compatibility panel names the cause.

Board edge extension — When a GPU or expansion card is assigned to a slot where its physical body would extend past the last slot on the board, the compatibility checker calls it out by name and tells you which slot the device landed in. This matters most on boards where a wide GPU ends up in the lower-half slot after a second GPU claims the primary one. The system detects this automatically from the slot placement simulation.

Both checks run before you look at the topology panel, so the compatibility tab surfaces the problem and the topology panel shows you exactly where the affected slots are.

Multi-Instance Components

Building a dual-GPU workstation? A build with multiple SSDs and an NVMe adapter? RigSync now supports multiple instances of the same component within a single build.

Memory kits, GPUs, storage drives, and expansion cards can all be added in multiples. Each instance is tracked independently — compatibility checks, slot assignments, and topology warnings account for all of them together, not just the first one added.

In practice this matters most when a dual-GPU setup causes one GPU to drop to x8 lanes, or when multiple NVMe adapters need to share chipset bandwidth. Both are now modeled correctly and surfaced through the warning system.

Expanded Pricing from Newegg

RigSync now pulls component prices from Newegg in addition to existing price sources. This brings broader coverage across product categories and better accuracy on components that are primarily or exclusively available through Newegg. Prices update regularly and feed directly into budget validation in both the optimizer and the Component Browser. Newegg pricing is rolling out progressively across the catalog — coverage will expand as products are updated.

Manual PCIe Slot Selection

Every GPU and expansion card row in the Component Table now includes a slot selector. Click the slot badge to open a panel showing every PCIe slot on the board — its lane count, PCIe generation, current occupant if any, and effective bandwidth. Select a slot and the topology updates immediately around it.

This is useful when the auto-assigner's recommendation doesn't match your physical build plan. If your case or cooling layout means the GPU has to go in a specific slot, or if you want to experiment with how a particular placement affects the rest of the build, you can set it directly rather than working around the optimizer.

When you select a slot already occupied by another component, that component gets displaced to the next best available slot. The topology, warnings, and bandwidth calculations all update in real time to reflect the new arrangement.

The Optimize button above the topology panel clears all manual slot assignments and reruns the auto-assigner from scratch — useful when you've been experimenting and want the system to find the best configuration again.

What looks like a simple dropdown is backed by a live model of electrical lane routing, physical slot blocking, chipset uplink behavior, and bifurcation rules — all recalculated the moment you make a change. For builders who want to understand exactly what their board is doing, or who have specific physical constraints to work around, this is the feature that makes the topology panel a tool rather than a display.

What's Next

More platforms, more component types, and deeper optimizer coverage. The slot assignment and warning systems are designed to extend to M.2 slot selection and additional PCIe device categories as the catalog grows. The direction is a tool that catches more of the non-obvious interactions before they become post-build surprises.

With this update, RigSync goes further than compatibility checking — it models how components interact electrically and physically, scores placement decisions against real-world bandwidth thresholds, and explains the tradeoffs before you buy. The goal has always been the same: not just a build that works on paper, but one where every component works well with everything around it.

Try the Component Browser to see the topology panel in action — Component Browser →

Want to understand what these warnings mean and why PCIe lanes work the way they do? Understanding PCIe Topology Warnings covers all of it — plain language, no assumed background.