Probably been done so many times before but I cannot find what I need to know.
Have just cleaned up an old Dell GX240 Optiplex for a friend that has a Pentium 4 1.7Ghz on an Intel board with a i845 chipset and A05 BIOS that states it can support up to and including 3.0Ghz CPU.
It's running ok but as I have some spare Pentium 4"s here ranging from 2.53 - 3.0Ghz thought I could just slip say the 2.53Ghz one in for a bit more speed. But did that and no go. Have Googled for reason and looked at Intel's comparison chart but I cant see why the faster one will not work. Mind you I suppose my spares might be dead:-(
Being that much faster than his old cpu plus it being a dell motherboard there are all kinds of things that could stop that cpu from working in it. That wattage could be different, the front side bus of the cpu could be to high for the motherboard to handle, those are the things that i would think would be the problem.
No dexter mate I don't get a thing just a blank screen (didn't even turn on) and I think you've answered my query - its all DDR1 RAM - although I think I took some of the other CPU's out of DDR1 machines - but wouldn't swear to that.
Never mind the machine that she gave me to fix up for her was running a 1.1Ghz Celeron and that really old two notch (don't know what that is called) RAM. Hence when I picked up this Optiflex at a local recycle centre and it has been really looked after I just put her HDD and optical in it and the difference was a 1000% increase in speed lol!!
Anyway she'll be pleased with it now as she could not afford a new machine (poorly paid assistant nurse) or go to a tech shop. Plus I just like the challenge with these things as a hobby ad retirement looming he he!!, and the only cost to friends and workmates is any new parts I have to buy .
Thanks for your help, time and patience you're a gent!
Hiyya both - found out after all that the board was "custom made" for Dell to only support up to a CPU - 1.7Ghz and 1GB PC133 RAM - hence that "i" in front of the 845 chipset which in it's 'unmodified' state will take up to a 3.0Ghz CPU and higher max RAM.
But it's all cleaned up now and running reasonably quickly - apart from putting another board in there which is more than it is probably worth - it gives her a bit more time for her or me to find a better option (or cheaper new machine - can get an eMachine brand i3 1Gb RAM running 7 Premium for $389AUD).
Anyway gotta give you both gold stars as you were both on track eh?