Intel Confidential QBFR ES 2.90GHz LGA2011 CPU Sandy Bridge-E Engineering Samp For Sale
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Intel Confidential QBFR ES 2.90GHz LGA2011 CPU Sandy Bridge-E Engineering Samp
Up for sale is a rare, vintage Intel Engineering Sample processor featuring the unique QBFR SPEC code. This pre-production chip was laser-etched with "INTEL CONFIDENTIAL" and "ES 2" at the factory in Costa Rica. It runs at a base clock speed of 2.90 GHz and is built on the Sandy Bridge-E architecture for LGA 2011 sockets.
Perfect for:
Hardware collectors and CPU museum enthusiasts.
Retro tech YouTubers and hardware reviewers.
Unique tech keychains, desk ornaments, or display cases.
⚠️ IMPORTANT COMPLIANCE & COMPATIBILITY NOTICE FOR BUYERS:
Collectible Item: This is a pre-production Engineering Sample (ES), not a final retail chip.
Compatibility: ES chips often require specific motherboard microcode or older BIOS versions to boot, and they may feature minor stability bugs or deactivated features compared to retail hardware. It may not work out-of-the-box on standard consumer X79 or server motherboards.
Sales Policy: Due to the experimental nature of pre-production silicon, this item is being sold AS-IS / For Parts or Collectible Use Only. Returns will not be accepted for motherboard incompatibility. Please ensure you know how to handle engineering samples before purchasing.
