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I have an old 486 that I'm using for old sutff I used to tinker with. I've been going nuts lately though, because I have been trying to figure out what speed this box is. It's a 486slc2 processor, opti chipset, made by Patriot Computers, model number M466. I've searched all over the internet, but haven't come across anything definitively telling me what speed this comp is. I thought is was a 486 DX/66, but some pages suggest it's a dx2/66, others say it's a 50 mhz... please help.
Try this web page it should tell you what you need to know:
http://webpages.charter.net/ohlandl/CPU/855x-486SLC2_Upgrade.html
Graham Peat
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this is even another speed that this processor is supposed to be capable of. aren't there dif speeds for this cpu? How do I find out what mine is?
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When you turn your comp on you should see the true speed displayed in Mhz just before the total memory is displayed if you dont see this then you may be able to select it in the bios setup screen.
Graham Peat
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In some bios`s you get an option in the Bios Features Setup screen to Show CPU ID if this is enabled it will show the type & speed of the cpu.
Graham Peat
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486-25.. dx2 50 mhz dx4 75 mhz
486-33.. dx2 66 mhz dx4 100 mhz
486-40.. dx2 80 mhz dx4 120 mhzThe dx 4 is actually a clock trippler and not as the same suggests. The processor speed can be found under the fan / heat sink if it has one, or on the underside of the cpu.
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If you do open up your case and look at the chip I bet your cpu speed will be 40 Mhz.
Graham Peat
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If running MS-DOS, type MSD at the command prompt to get Microsoft Diagnostics.
Otherwise, dowload syschk from:
http://www.syschk.com
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If you download the Ultimate Boot Disk, it has syscheck on it and will give you an indication of processor speed. There are other good tools on it as well.
While your at it download the supplementle disk which has an anti-virus checker on it. I find these good for those times when there are problems with my PCs. You'll find it by doing a google search.
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I opened it up, but the heat sink, I think, is glued to the chip, so I can't see what it is, and the other chips are the ones that give me multiple cpu possibilities when I look them up.
The MSD told me it was simply a 486SX, I take it it doesn't have the ability to view it as an actual 486SLC2 (the dif being that the slc2 has no coprocessor, but 16k cache).
I'm going to try the boot disk suggestion, but I suspect that it won't narrow down the cpu speed, but who knows.
Is it possible to take the heat sink off and put it back on?
Thanks for all the ideas guys.
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Ok, syschk did the trick. It says this is a i486SX 66, but the chip set inside, and the bios both say this is a 486SLC2. I thought it would be able to distinquish between that. So what does this mean? A 486 Dx/2 is actually a 486 33 with 2 processors right? can someone tell me, if in fact this program is correct, what a 486SLC2 is? Is it basically a 486SX 66 mhz with 16k internal cache?
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No your comp is not a 486sx 66 basicaly what has happened is your comp was upgraded with the 486slc2 chip look a the web page I gave in response 1 carefully. A 486 dx2 is a 486 chip that`s had the clock speed doubled so its an overclocked cpu.From what I read on the web page your computers old chip before the the upgrade must have been 20 or 25 Mhz and after upgrade it increased to 40 Mhz. As for system check remember if the program you are using is older than the cpu then it wont recognise the cpu properly also in this case because it was an upgrade chip it probably doesn`t recognise it anyway.
The bottom line is you`ve basicaly got a 486SX/40
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What's left to discover? The SLC computer was an SX with an extra on board cache. Almost all times 2 computers were 66 Mcs and software told you you have an SX2-66. So it is very probable you have an SLC2-66.
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Here is a DOS utility for identifying a cpu and displaying the chip's speed and cache settings:
http://web.inter.nl.net/hcc/J.Steunebrink/chkcpu.htm
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