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‎docs/COMPATABILITY.md‎

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# Hardware Compatibility
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## Tested Systems
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| Manufacturer | Model | Windows 10 | Windows 11 | Notes |
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|--------------|-------|------------|------------|-------|
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| Dell | OptiPlex 7090 | ✅ | ✅ | Full compatibility |
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| HP | EliteDesk 800 | ✅ | ✅ | BIOS update recommended |
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| Lenovo | ThinkCentre M920 | ✅ | ⚠️ | Driver issues with Win11 |
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## Known Issues
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- Surface devices: Touch driver conflicts
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- Gaming laptops: Manufacturer software conflicts
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# Compatibility
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## Tested Configurations (v2.6)
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### Operating Systems
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| OS | Edition | Build | Status | Notes |
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|----|---------|-------|--------|-------|
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| Windows 11 | Pro Insider Preview | 26200 | Fully tested | Primary development platform |
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| Windows 11 | Pro | 22621+ | Compatible | Full test suite |
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| Windows 11 | Home | 22621+ | Compatible | Some tests require admin |
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| Windows 10 | Pro | 19041+ | Compatible | Full test suite |
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| Windows 10 | Home | 19041+ | Compatible | Some tests require admin |
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| Windows Server 2022 | Standard | — | Compatible | GPU tests may be limited |
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| Windows Server 2019 | Standard | — | Compatible | GPU tests may be limited |
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PowerShell 5.1 (ships with Windows 10/11) is the primary target. PowerShell 7 is supported but not required.
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---
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## Tested Hardware (v2.6 test run)
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### CPU
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| Model | Cores / Threads | Status |
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|-------|----------------|--------|
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| Intel Core i9-13900K | 24C / 32T | Tested |
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| Intel Core i7-12700K | 12C / 20T | Compatible |
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| AMD Ryzen 9 5900X | 12C / 24T | Compatible |
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### GPU
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| Model | VRAM | Status | Notes |
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|-------|------|--------|-------|
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| NVIDIA GeForce RTX 3080 | 10 GB | Tested | nvidia-smi, VRAM accurate |
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| Intel UHD Graphics 770 | 2 GB (shared) | Tested | iGPU detected correctly |
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| AMD Radeon RX 6800 XT | 16 GB | Compatible | Registry detection |
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| NVIDIA GeForce RTX 4090 | 24 GB | Compatible | VRAM via REG_BINARY fix |
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### Storage
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| Type | Interface | Status |
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|------|-----------|--------|
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| NVMe SSD | PCIe 4.0 | Tested (1373 MB/s write, 3996 MB/s read) |
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| SATA SSD | SATA III | Compatible |
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| HDD | SATA | Compatible |
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| USB Flash | USB 3.x | Compatible (script drive) |
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### Network Adapters
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| Type | Status | Notes |
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|------|--------|-------|
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| Intel / Realtek Gigabit Ethernet | Full support | Physical NIC check applies |
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| Wi-Fi (802.11n / ax) | Full support | Excluded from "slow NIC" recommendation (v2.6) |
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| VMware VMnet | Full support | Excluded from physical NIC check |
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| Mullvad VPN | Full support | Excluded from physical NIC check |
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| Tailscale | Full support | Excluded from physical NIC check |
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| WireGuard | Full support | Excluded from physical NIC check |
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---
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## Speed Test Compatibility
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The v2.6 engine uses a three-method cascade:
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| Method | TLS | VPN Compatible | Notes |
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|--------|-----|---------------|-------|
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| curl.exe (primary) | 1.3 | Yes | WinHTTP/Schannel; ships with Windows 10 1803+ |
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| BITS (fallback) | 1.3 | Yes | Background Intelligent Transfer Service |
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| Invoke-WebRequest (last resort) | 1.2/1.3 | Partial | .NET; may fail under TLS-intercepting proxies |
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curl.exe is available on Windows 10 version 1803 and later. On older systems, BITS is the primary method.
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---
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## Known Limitations
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| Area | Limitation | Workaround |
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|------|-----------|------------|
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| coreinfo output | CPU topology map lines may not survive the output cleaner (format variation) | View full coreinfo output manually |
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| GPU-OpenGL | OpenGL ICD registry entries not always present | Not a failure — entry is omitted if no data found |
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| DISM/SFC | Require admin; skipped otherwise | Run via SystemTester.bat as Administrator |
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| Energy report | Requires admin; 15-second scan | Run via SystemTester.bat as Administrator |
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| Non-English Windows | DISM/SFC text matching bypassed; relies on exit codes | Fixed in v2.6 via language-neutral exit code embedding |
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| Windows Server | Some GPU/display tests may return limited data | Expected — server SKUs often lack display hardware |
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---
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## VPN Compatibility (v2.6)
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Tested under Mullvad VPN (WireGuard protocol) with all tests passing. The following VPN software is excluded from the "slow physical NIC" recommendation engine:
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Mullvad, Tailscale, WireGuard, OpenVPN, TAP-Windows, Cisco AnyConnect, GlobalProtect, Fortinet/FortiClient, NordLynx, Pulse, ProtonVPN, Surfshark, ZeroTier

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