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68040 Engineering Sample CPU

 
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Nitro
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Joined: 22 Oct 2005
Posts: 421
Location: Littleton, Colorado USA

PostPosted: Mon Dec 03, 2007 10:00 am    Post subject: 68040 Engineering Sample CPU Reply with quote

Here’s a few pictures of an early 25Mhz 68040 Cube motherboard that I recently acquired that shipped from the NeXT factory with an engineering sample CPU. I noticed the odd markings on the CPU and decided to look into what it meant. According to CPU World the “PC” prefix of the part number indicates a Motorola engineering sample. I also noticed that the part number is missing the CPU speed rating. I’ve seen pictures of another cube that had a sample CPU, so the NeXT technicians must have used engineering samples occasionally for production units.








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kb7sqi



Joined: 24 Sep 2007
Posts: 488
Location: Winston Salem, NC

PostPosted: Mon Dec 03, 2007 10:41 am    Post subject: Reply with quote

Nice pics! Thanks for sharing.
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Mike_H



Joined: 04 Jan 2006
Posts: 36
Location: USA

PostPosted: Tue Dec 04, 2007 7:53 am    Post subject: Reply with quote

Using up engineering samples was probably one of the few cost-saving measures that NeXT ever implemented. Smile
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sdinet



Joined: 25 Jun 2008
Posts: 184

PostPosted: Fri Sep 05, 2008 6:56 am    Post subject: Reply with quote

Is a cube with an engineering sample "worth" more then a regular cube? Are they pretty rare and sought after? Reason I ask is because I found one but they are asking quite alot for it... Wanted to know if they are RARE
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pergamon



Joined: 30 Dec 2005
Posts: 211
Location: Indiana

PostPosted: Fri Sep 05, 2008 3:38 pm    Post subject: Reply with quote

sdinet wrote:
Is a cube with an engineering sample "worth" more then a regular cube? Are they pretty rare and sought after? Reason I ask is because I found one but they are asking quite alot for it... Wanted to know if they are RARE


I would doubt it - I think I have a couple, although I'd have to check to make sure. The cubes tend to be expensive no matter what CPU is in them...
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gtnicol



Joined: 27 Dec 2005
Posts: 525
Location: Rhode Island, USA

PostPosted: Sat Nov 27, 2010 10:17 am    Post subject: Reply with quote

I was going through my cubes and I found something similar, though the mounting is unusual because it has a clip-on heatsink that actually rubs on the power supply when installed.

[img]http://www.flickr.com/photos/15578792@N02/5212082020/[/img]
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