# Buying Guides — CapyToolkit Blog

For the full blog, see: [Blog](https://capytoolkit.com/blog/)

[Privacy-First Smart Home Cameras and Doorbells: Local Processing vs. Cloud, and What To Check](https://capytoolkit.com/blog/buying-guides/privacy-smart-home-cameras-doorbells-local-cloud-check/): How to read past camera marketing and buy a smart home camera or doorbell that keeps footage local, from on-device AI to open protocols.
[How to Tell If a microSD Card or External SSD Is Fake or Slower Than Advertised](https://capytoolkit.com/blog/buying-guides/tell-if-microsd-card-external-ssd-fake-slower-advertised/): How to catch counterfeit and underperforming storage before you lose data, using browser-based hash verification alongside native capacity and speed tools.
[Hall-Effect Controllers Still Drift: How to Verify the "Drift-Free" Claim in Your Browser](https://capytoolkit.com/blog/buying-guides/hall-effect-controllers-still-drift-verify-drift-free-claim-browser/): Paid extra for Hall-effect sticks? Read raw Gamepad API axis values in your browser to confirm whether your controller actually drifts.
[Power Bank and GaN Charger Capacity Claims: How to Verify the mAh-to-Wh Math Yourself](https://capytoolkit.com/blog/buying-guides/power-bank-charger-capacity-claims-verify-mah-wh-math-yourself/): Battery listings show mAh, not watt-hours. Learn to convert, spot inflated claims, and pick a power bank that delivers.
[Portable Second Monitors: How to Verify a Panel Before Your Return Window Closes](https://capytoolkit.com/blog/buying-guides/portable-second-monitors-verify-panel-before-return-window/): A browser-only checklist for testing dead pixels, backlight bleed, uniformity, USB-C connectivity, and defect documentation on delivery day.
[What NPU TOPS Doesn't Tell You: How Memory Bandwidth Bounds Local LLM Performance](https://capytoolkit.com/blog/buying-guides/npu-tops-vs-memory-bandwidth-local-llm-ai-pc/): Decode spec sheets to find memory bandwidth, not TOPS. Learn to evaluate NPU hardware for local LLM performance before you buy.
[What Mechanical Keyboard Specs Actually Matter and How to Verify Them in Your Browser](https://capytoolkit.com/blog/buying-guides/mechanical-keyboard-specs-actually-matter-how-to-verify-browser/): Which keyboard specs separate real improvements from marketing filler, and how to verify polling rate, debounce, and rollover claims before you buy.
[Wi-Fi 7 Router Buying Guide: What the Specs Actually Mean for Gaming and Streaming](https://capytoolkit.com/blog/buying-guides/wifi-7-router-buying-guide-specs-gaming-streaming/): Decode Wi-Fi 7 spec sheets and learn which router features affect gaming latency, streaming stability, and NAT behavior.
[What to Look for in a VPN That Actually Protects Your Privacy](https://capytoolkit.com/blog/buying-guides/what-to-look-for-in-a-vpn-that-actually-protects-your-privacy/): How to verify a VPN's privacy claims before subscribing, using browser-based network tools to test IP leaks, DNS routing, and tunnel integrity.
[What to Look for When Buying a Webcam, and How to Test It Before You Commit](https://capytoolkit.com/blog/buying-guides/what-look-buying-webcam-how-test-before-commit/): Which webcam specs predict video-call quality, which are marketing filler, and how to test any webcam in your browser before the return window closes.
[How to Shop for a Microphone: Specs That Matter, Specs That Don't, and How to Verify Before You Buy](https://capytoolkit.com/blog/buying-guides/shop-for-microphone-specs-that-matter-verify-before-buying/): Which microphone specs actually matter, which ones are marketing filler, and how to test any mic in your browser before you buy.
[Choosing an AI Model Based on Token Pricing and Context Window Fit](https://capytoolkit.com/blog/buying-guides/choosing-an-ai-model-based-on-token-pricing-and-context-window-fit/): Compare 37 AI models by token cost, context window size, and live pricing before your next API call. Stop guessing what your prompts actually cost.
[Monitor Buying Guide: Dead Pixels, Backlight Bleed, Motion Ghosting, and Color Uniformity Tests You Run in the Browser](https://capytoolkit.com/blog/buying-guides/monitor-buying-guide-dead-pixels-backlight-bleed-motion-ghosting/): Catch dead pixels, backlight bleed, ghosting, gradient banding, and contrast issues before your return window closes.
[Headphone Buying Guide: How to Test Frequency Response, Channel Balance, and Latency Before You Commit](https://capytoolkit.com/blog/buying-guides/headphone-buying-guide-test-frequency-response-channel-balance-latency/): How to decode headphone specs, what to listen for on first listen, and how to verify frequency response, channel balance, and latency in your browser.
[Gaming Peripheral Specs You Can Verify in the Mouse, Controller, and Webcam](https://capytoolkit.com/blog/buying-guides/gaming-peripheral-specs-you-can-verify-mouse-controller-webcam/): Gaming mice, controllers, and webcams ship with spec-sheet numbers measured in ideal lab conditions. Verify each one locally in your browser.