StarTech.com
StarTech 6in LP4 to 8 Pin PCIe Video Power Adapter Cable (LP4PCIEX8ADP) | Molex to 8 pin PCIe Power
Bottom line: The StarTech.com StarTech 6in LP4 to 8 Pin PCIe Video Power Adapter Cable: Powers 8-pin PCIe GPUs from a single LP4 Molex, no PSU upgrade needed; main trade-off: draws 8-pin PCIe load from one LP4 line, unsafe for high-wattage GPUs.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Pros & Cons
Pros
- ✓ Powers 8-pin PCIe GPUs from a single LP4 Molex, no PSU upgrade needed
- ✓ 6-inch length keeps cable runs tidy inside compact cases
- ✓ StarTech.com-branded with clear LP4PCIEX8ADP part number
- ✓ Plug-and-play install, no tools or splicing required
Cons
- ✗ Draws 8-pin PCIe load from one LP4 line, unsafe for high-wattage GPUs
- ✗ Single-connector adapter, no daisy-chain or dual-rail balancing
- ✗ Only 6 inches, may not reach top-mounted card connectors
- ✗ No 6+2 pin split, locks you to full 8-pin cards
Manufacturer description
The LP4PCIEX8ADP 6-inch LP4 to 8-Pin PCI Express Power Adapter converts a standard LP4 power connector on your existing power supply to an 8-pin PCI Express video card power connector, allowing you to install a PCIe graphics card without having to upgrade the computer power supply.
SpecPicks Verdict
SpecPicks scored StarTech.com StarTech 6in LP4 to 8 Pin PCIe Video Power Adapter Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the retro graphics & video category. StarTech.com's retro graphics & video lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for retro graphics & video of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Powering a PCI Express video card with an older power supply that doesn't feature a PCIe power connection
- Eliminates the need to upgrade your power supply with an 8-Pin power connector for PCI-Express Video Cards
- Easy to use and install
Full Specifications
| Brand | StarTech.com |
|---|---|
| Color | Black |
| Model | LP4PCIEX8ADP |
| Cable Type | VGA |
| Item Shape | Round |
| Model Name | LP4 to PCIe Power Cable Adapter |
| Unit Count | 1 Count |
| Part Number | LP4PCIEX8ADP |
| Connector Type | 8-pin |
| Number of Pins | 8 |
| Maximum Voltage | 12 volts |
| Number of Items | 1 |
| Special Feature | Not_Performance_Used |
| Connector Gender | Male-to-Female |
| Specification Met | RoHS |
| Compatible Devices | PC |
| Indoor Outdoor Usage | Indoor |
| Warranty Description | Lifetime warranty |
| Customer Package Type | box |
| Compatible Phone Models | No Compatible Phone Models |
Ready to buy?
StarTech 6in LP4 to 8 Pin PCIe Video Power Adapter Cable (LP4PCIEX8ADP) | Molex to 8 pin PCIe Power is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related Retro Graphics & Video
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- How to Build a Windows 98 Retro PC in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Homelab Month One: Raspberry Pi 4 or a Ryzen 5 Mini-PC?
- 1440p High-Refresh vs 4K for Gaming in 2026: ASUS TUF 27" QHD vs SANSUI/KOORUI 4K
- Linux 7.3: 'Flatten the Pick' Scheduler Gains for Gaming
- Best Mouse and Mousepad for FPS Aim Training in 2026
- Legion Go vs Steam Deck vs ROG Ally: 2026 Buying Guide
- Gemini-SQL2 Tops Text-to-SQL: Can an RTX 3060 Run a Local SQL Model?
- Jan.ai vs LM Studio vs Ollama: Easiest Local-LLM App for a 12GB Card in 2026
- Running Gemma 4 31B Finetunes Locally: Dual RTX 3060 12GB vs Single 24GB Card
- Best GPU for Local LLMs by VRAM: 2026 Reddit Consensus
- Running DeepSeek Distills Locally on a Ryzen 7 5800X + RTX 3060
- Best 4K Monitor for an RTX 3060 12GB: KOORUI vs Samsung Odyssey
- Ollama vs llama.cpp vs vLLM — which local LLM runtime wins in 2026?
- Best SATA SSDs for Gaming and Retro PC Builds in 2026
- 8BitDo Pro 2 vs GameSir G7 SE for Raspberry Pi Emulation
- Asus ROG Xreal R1: 240Hz AR gaming glasses land
- 9800X3D Build: RTX 5080 vs 5070 Ti vs 9070 XT at 1440p
- Raspberry Pi AI HAT+ 2025: TOPS, Price, Setup Guide
- Best Streaming Microphone for Twitch and YouTube in 2026
- Sound Blaster Audigy 2 ZS vs Live! 5.1: WinXP Gaming Audio in 2026
- Llama 4 Scout: RTX 3060 12GB Expert Offload vs Ryzen 7 5800X CPU-Only (2026)
- Best GPU + Monitor Pairings for 1440p QD-Mini-LED Gaming in 2026
- Save $550 on iBuyPower RTX 5070 + 7800X3D 4K Gaming PC
- Prime Intellect Raises $130M to Help Enterprises Build Their Own AI Agents
- Is the RTX 3060 12GB Still Worth Buying in 2026?
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090