Who can indentify the CPU?
https://steamcommunity.com/sharedfiles/filedetails/?id=1724859225

Well I bought a "new" CPU, however I struggle to know what CPU it exactly is. maybe you guys can help.
What I know for sure: It is an intel PGA i486. With the look and the IHS it should be an i486 DX2 which fits also with the bottom line.
Also the Voltage line of 3.0V does fit (though it is actually 3.3V).

However the top line says DX33 which heatspread does not fit.

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OLD 486
https://en.wikipedia.org/wiki/Intel_80486

Overdrive/upgrade processors for 80486 systems could be used to easily upgrade single or double clocked 80486 processors with double or triple clocked 80486 CPUs. Two different types of 80486 overdrive processors were offered:

Processors with "ODP" in their part number could only be used in special overdrive sockets. When inserted into the overdrive socket they would disable the original processor.
Processors with "ODPR" in their part number replaced the original processor.

Almost all overdrive processors were sold with integrated heatsink.
最近の変更はOLDMAN🎅が行いました; 2019年4月27日 6時13分
http://www.cpu-collection.de/?l0=co&l1=intel&l2=i486%20dx

I had one of those, wicked gaming machine for its time with a 1mb (yes, MB) diamond gpu.
最近の変更はCarlsbergが行いました; 2019年4月27日 6時15分
I had a standard DX2, non-heatsinked inside a Ali Magik chipset. If nothing else, Raptor Call of the Shadows worked like a charm.

Good find, v3.0 is quite rare.
NASA still use older processor
https://en.wikichip.org/wiki/microprocessors_used_in_spacecrafts

Many of the processors running today's spacecraft are the same that were found in our PCs and laptops. The only problem is that many of the processors powering essential spacecraft functions now date back to the 1990s
https://www.zdnet.com/article/why-todays-spacecraft-still-run-on-1990s-processors/

The Am486 is a 80486-class family of computer processors that was produced by AMD in the 1990s. Intel beat AMD to market by nearly four years, but AMD priced its 40 MHz 486 at or below Intel's price for a 33 MHz chip, offering about 20% better performance for the same price.

While competing 486 chips, such as those from Cyrix, benchmarked lower than the equivalent Intel chip, AMD's 486 matched Intel's performance on a clock-for-clock basis.

While the Am386 was primarily used by small computer manufacturers, the Am486DX, DX2, and SX2 chips gained acceptance among larger computer manufacturers, especially Acer and Compaq, in the 1994 time frame.

AMD's higher clocked 486 chips provided superior performance to many of the early Pentium chips, especially the 60 and 66 MHz launch products. While equivalent Intel 80486DX4 chips were priced high and required a minor socket modification, AMD priced low. Intel's DX4 chips initially had twice the cache of the AMD chips, giving them a slight performance edge, but AMD's DX4-100 usually cost less than Intel's DX2-66.

The enhanced Am486 series supported new features like extended power-saving modes and an 8 KiB Write-Back L1-Cache, later versions even got an upgrade to 16 KiB Write-Back L1-Cache.

The 133 MHz AMD Am5x86 was a higher clocked enhanced Am486.
https://en.wikipedia.org/wiki/Am486
最近の変更はrotNdudeが行いました; 2019年4月27日 10時44分
Intresting information here. I seen i486 DX2 befor but enevr a DX-33. Wasnt even ware of them.

Now I have to check if I can find a working motherboard for it and if it still runs :D
DX2 started with 66MHz if my memory serves correctly. There was even a DX40, but it wasn't very popular.
_I_ 2019年4月27日 10時07分 
the 486 sx needs the external fpu (called math co-processor at the time)
the 486 dx has the fpu built in it

the dx # was the cpu mulit it was capble of
dx2 multi is 2
dx4 multi is 3

the lowest dx2 was 40 (20mhz x 2)
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投稿日: 2019年4月27日 5時49分
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