Interesting, I put a socket 7 Pentium MMX in my Dell. It's supposed to run at 233MhZ, but due to the motherboard limitations, shows up as only 200 in the bios/Windows. (I could also have set the jumpers wrong, I haven't played around with it recently.) I still have my Pentium 166 chip on my desk- want me to take a look/photo of it for reference?

yes please do.

i found some pics of mmx processors

http://www.cpu-collection.de/?l0=co&l1=Intel& … +MMX#FV80503233

the mmx i have looks closer to the 166mhz edition.

http://www.cpu-collection.de/showimage.php?i= … &s=big&tb=2&r=0

from what i see pink is ceramic and black is plastic. 233mhz is plastic package type, so should be black. also i couldn't find a SL27J cpu with 233 core frequency.

this leads me to believe that this must be a fake 233. must be around 133

Yes, SL27J should be a black plastic Pentium MMX 200MHz, I have one here.

I cannot find another Ceramic SL27J on the net so far.
The text on your CPU seems more clean and white then on the ceramic pentiums I have here.

gerwin wrote:

Yes, SL27J should be a black plastic Pentium MMX 200MHz, I have one here.

I cannot find another Ceramic SL27J on the net so far.
The text on your CPU seems more clean and white then on the ceramic pentiums I have here.

thank you for answering. is your heatsink/fan glued ontop the cpu? i can't get mine off. this doesnt seem like thermal paste....

Mine came without a heatsink... Maybe someone else can advise you on getting it removed.

I tried to get some decent shots of mine, pardon the terrible camera:

My old Pentium MMX 166MhZ

I would have taken photos of the 233, but it's currently installed in my Dell and coated with heatsink paste! Hope these help you.

a plastic mmx 166. ok thanks. i will need to find a way to get the heatsink off, otherwise i won't find out what's the real model of my cpu.

SL27J=200mhz Pentium MMX

I tried to clean off the die there as best I could. That thermal paste was baked on there since probably around 1995! It's got a passive heatsink.

sepultribe wrote:

a plastic mmx 166. ok thanks. i will need to find a way to get the heatsink off, otherwise i won't find out what's the real model of my cpu.

From the look of that picture it looks like you can remove the fan, or did you try that already? just removing the fan and not the whole heat sink. It kinda resembles a Pentium overdrive heat sink, those things usually had the CPU ID printed just under the fan.

Also I don't recommend trying to remove a heat sink that has been plastered on the CPU, more often then not the ceramic can end up getting a crack. It's a very delicate thing.

[EDIT]

Here is an example image of how an overdrive heat sink looks like under the fan. I'm not saying it will be the same, but it's worth a try before attempting to remove the whole thing 😀

sepultribe wrote:

a plastic mmx 166. ok thanks. i will need to find a way to get the heatsink off, otherwise i won't find out what's the real model of my cpu.

Is the cooler an oem style cooler like what Dell or Compaq would use for example or the stock retail package intel cooler. Small black painted aluminum cooler with integrated fan?

Ahcruna wrote:

From the look of that picture it looks like you can remove the fan, or did you try that already? just removing the fan and not t […]
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sepultribe wrote:

a plastic mmx 166. ok thanks. i will need to find a way to get the heatsink off, otherwise i won't find out what's the real model of my cpu.

From the look of that picture it looks like you can remove the fan, or did you try that already? just removing the fan and not the whole heat sink. It kinda resembles a Pentium overdrive heat sink, those things usually had the CPU ID printed just under the fan.

Also I don't recommend trying to remove a heat sink that has been plastered on the CPU, more often then not the ceramic can end up getting a crack. It's a very delicate thing.

[EDIT]

Here is an example image of how an overdrive heat sink looks like under the fan. I'm not saying it will be the same, but it's worth a try before attempting to remove the whole thing 😀

i didn't try to remove the fan, thought it was all one piece. i removed it now and took some pics. it says SL27J right there. i also wiped tha bottom of the chip with some acetone and the writing disappeared right away.

nforce4max wrote:

Is the cooler an oem style cooler like what Dell or Compaq would use for example or the stock retail package intel cooler. Small black painted aluminum cooler with integrated fan?

yes it is a black color aluminum one. isn't this a boxed version?

ps: on the heatsink side of the chip on the lower left there is a carved "233" mark but it is next to the carved circle not slightly upwards like this

I think that we might have one of the legendary remarked samples that people used to purchase then mill down the surfaces so that they can remark the cpu as a different model. There was a rash of these back in the mid 90s when the Pentium 1 still had a high price. You can freeze the cpu in a freezer then try to pull the cooler off with a flat tip screw driver, force it a little at a time then eventually it will pop. The cooler will fall free from the top of the cpu without any harm. Use 90+% rubbing alcohol to remove the old epoxy/glue.