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| Thread ID: 15467 | 2002-02-07 18:37:00 | Adding RAM made my PC go slower | Guest (0) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 34812 | 2002-02-07 18:37:00 | I have an old 486 PC with only 16MB RAM in it. I'm running the very first Win95 edition. You know the FAT 16 one. It is not an upgrade. I found some 72 pin SIMMS which fitted into my PC so in they went. An extra 12 MB is better than nothing. Bios liked it, Windows liked, it was recognised. Only thing, my PC is now running slower than ever even after taking the extra RAM out reverting back to my original config. I defraged and checked for viruses and also deleted the Windows page file win386.swp so Windows could make a new one in conginous space after I defragged. No luck. Anyone have any ideas. | Guest (0) | ||
| 34813 | 2002-02-07 19:52:00 | Is it one of the ones with a turbo switch - might have been accidentally knocked or had the wires dislodged at the motherboard? | Guest (0) | ||
| 34814 | 2002-02-07 21:02:00 | I had the same trouble with an old 486 last year, it was traced to a ram incompatability, finding ram that worked was impossible. I wish you luck | Guest (0) | ||
| 34815 | 2002-02-07 22:08:00 | The big thing here is that in the day's of 72Pin SIMM's, you had two major types of Memory. Fast Page and EDO. These two RAM types do not work well together. Also mixing memory speeds can cause this issue if you have the BIOS trying to access the memory at the speed of the fastest SIMM rather than the slowest. | Guest (0) | ||
| 34816 | 2002-02-08 02:48:00 | But memory usually works. Or not. If is incompatible, the computer does not work. Again, memory too slow will normally crash the computer when it is read. You can check your memory for speed: the individual chips on the simms have a long 'type number' on them. the last digit normally is preceded by a hyphen, and there may be a couple of letters after it. Eg: '-6JP'. A '6' would indicate 60 nS, '7' 70 nS, '8' 80nS. A '1' would be 100 nS, which would be TOO slow. Most 486s would 'prefer' 60 nS, and 70 might be OK. 80 would probably be too slow. But the difference in wait states between 60 & 70 nS ram would not be noticable as slower operation. I agree you might have a bumped turbo switch -- also check the BIOS setting for 'boot up speed'. You will notice that it's slow if it's running at 8 or 10 MHZ rather than 33 or 66 or 100. |
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| 34817 | 2002-02-17 03:04:00 | Unfortunately it wasn't the turbo switch. Infact it doesn't even have a turbo switch. | Guest (0) | ||
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