Browsing through random googled pictures, I stumbled upon this thingy. It looks like it was made to upgrade 486SX boards that did not have 487 socket! Must be a rare device.
It is a mistake to think you can solve any major problems just with potatoes.
I remember seeing a picture of a similar thing back in the days. Talk about "piggybacking" the original CPU 😁
I'd be worried about it coming off while the system is powered on though. Not sure I think it's such a good idea.
WinXP : PIII 1.4GHz, 512MB RAM, 73GB SCSI HDD, Matrox Parhelia, SB Audigy 2.
Win98se : K6-3+ 500MHz, 256MB RAM, 80GB HDD, Matrox Millennium G400 MAX, Voodoo 2, SW1000XG.
DOS6.22 : Intel DX4, 64MB RAM, 1.6GB HDD, Diamond Stealth64 DRAM, GUS 1MB, SB16.
What black magic is that? Looks very neat indeed - but like LunarG says, I'd be curious about the mechanical aspect of it.
Ahah that's genius 🤣
But yeah you must check and double check that some contacts aren't shorting (if it's not fitting perfectly or if the socket pins are not well aligned) and that you've firmly fixed it before powering up the computer 😵
I saw something like this on an episode of Computer Chronicles. Adapters are always cool.
I just looked this up, from what I can tell it looks like it was designed for a 486-based NEC PC 98 system, not a standard IBM-compatible PC. There might be a special mounting point on the motherboard for it, because it looks like it screws onto something. As well, the model name of the CPU upgrade itself sort of matches up with the model of the computer it upgrades, the PC-9821Ce2.
That thing looks scary. But I sympathize with anybody who wanted to upgrade a socketless CPU back then. I was desperate for our wimpy 386SX to go faster, and if I'd seen something like this I probably would have been trying to convince my dad to buy one.
So this disables the original CPU? I wonder how it accomplishes that - it seems like both processors would both be active and fighting for control of the bus.
wrote:I just looked this up, from what I can tell it looks like it was designed for a 486-based NEC PC 98 system, not a standard IBM-compatible PC. There might be a special mounting point on the motherboard for it, because it looks like it screws onto something. As well, the model name of the CPU upgrade itself sort of matches up with the model of the computer it upgrades, the PC-9821Ce2.
Could be, but one screw doesn't seem like a very convincing way to secure it. I guess it was the best kludge they could come up with for the particular board. Surely if NEC had intended such an upgrade to be possible, they would have just used a proper socket though.
wrote:That thing looks scary. But I sympathize with anybody who wanted to upgrade a socketless CPU back then. I was desperate for our wimpy 386SX to go faster, and if I'd seen something like this I probably would have been trying to convince my dad to buy one.
So this disables the original CPU? I wonder how it accomplishes that - it seems like both processors would both be active and fighting for control of the bus.
Scary indeed. I think that this thingy disables the CPU the same way 487 does. Probably shorting a couple of pins...
It's like a really big version of the Cyrix SRx2. I like it. Japanese people are very clever.
I have some of those japanese upgrade modules for various computers. Some of them actually work in regular PCs.
"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium
Looks like it snaps on once pushed down to me, likely pretty reliable if the socket is firm but very nice little upgrade.
On a far away planet reading your posts in the year 10,191.
Would be better to update to a socket machine than use this, i would not trust the reliability at all, even after some years that the cpu pins got oxidated a bit due to humidty and heat.
Would not do life saving number calculations with this kind of setup 😉
But still neat indeed.
I have a NEAT-470 that is neat also.
