Forum Home
Press F1
Thread ID: 26469	2002-10-28 05:39:00	CPU swap	SoniKalien (792)	Press F1

Post ID	Timestamp	Content	User
93800	2002-10-28 05:39:00	'lo Possibly thinking about putting a Compaq Presario laptop CPU (PI 266) into and older Compaq Presario desktop (PI 133) to beef things up a little. Just wondering if there was anything to watch or if it will / won't work for some stupid reason (like the laptop hard drive is gunna take some work with a hammer cos the standard IDE plug is a little too fat) so yeah... Also where do I find the FSB speed in Sandra? CIA (cheers in advance) SiK	SoniKalien (792)
93801	2002-10-29 07:04:00	Is this question too hard or do I smell bad?	SoniKalien (792)
93802	2002-10-29 07:32:00	I am not sure if it's possible as I haven't had much experience with older laptops but I would believe that the CPU is specifically made for the laptop so that is uses less voltage (since laptops run on batterys) and possibly a compact size so that it won't fit in desktop socket 7 motherboards.	~qwerty (2369)
93803	2002-10-29 08:05:00	Sonikalien, muumble muttter choke gurgle gasp... Ah that's better - without the gasmask. Say what? I guess you've checked the specs on the Compaq site for each of the laptop and desktops (or newHP or whatever they call themselves today). I wasn't sure it could be done as a straight cpu swap... I may be wrong... it has happened. Cheers, Babe.	Babe Ruth (416)
93804	2002-10-29 09:38:00	OK thanks guys, I just had a shower so the smell shouldn't be a problem now. Just been trawling thru Intel's and Compaq's archives, amoung others, and there seems to be a bit of confusion. Some tout the P55C as having 3.3v as I understand this may the IO voltage. However, Intel say the mobile version has 2.45v (versus 2.8v for the desktop) yet Sandra is reporting 1.8v. Makes me wonder, why the battery and power supply run on around 14v yet I've successfully run it at 12v (off a car battery). Anyway, I take it that if I chuck it in a desktop, it'll fry...	SoniKalien (792)
93805	2002-10-29 09:58:00	umm..... the cpu's are of two designs. a lot are fixed onto the mobo.... diff voltage, heat... just how the heck do u fit a heatsink/fan?? i do not know honestly. the ones i have seen at the v past were packages from manufacturers ie.. Compaq/IBM ie.. can upgrade 486 33 to 75. u can always look inside ur laptop. this i will enjoy!! great sight seeing. u can also try to take out cpu and compare (a lot are soldred onto mobo). but to actually switch cpu..... i suggest u get more info first. no liability to Press F1ers'.	rayonline (2134)
93806	2002-10-29 10:09:00	SoniKalien, Ahhh that's better... yes the voltages are quite different I always thought the P55c was 3.3 and the mobile 2.5 (ish) ... so there you go. It might run quicker... for a short time.!! Babe.	Babe Ruth (416)
93807	2002-10-29 10:09:00	"Possibly thinking about putting a Compaq Presario laptop CPU (PI 266) into and older Compaq Presario desktop (PI 133) to beef things up a little." are you certain that your laptop has a pentium 1 266 in it or am i reading it wrong? I'm no expert on laptop cpu's but I would have thought it would be a Pentium 2 based chip which even if the pin layout was the same as a standard chip (which i doubt) is going to be rather difficult cramming into a socket 7.	the highlander (245)
93808	2002-10-29 20:39:00	This is getting fun.. ::Rayonline:: >umm..... the cpu's are of two designs. a lot are fixed onto the mobo.... Neither of these are. I wouldn't have bothered thinking in the first place if either one was. >diff voltage, heat... just how the heck do u fit a heatsink/fan?? Mobile processors are designed to run on a lower voltage to reduce current -> watts -> heat. The heatsink on the laptop consists of a large thin plate that covers the entire m/board and is attached to the CPU with double sided tape! >i do not know honestly. the ones i have seen at the v past were packages from manufacturers ie.. Compaq/IBM ie.. can upgrade 486 33 to 75. Things were quite different with pentium tho. The laptop is upgradable to 333 and the desktop is upgradable. But the mobile processor doesn't like the desktop voltage! >u can always look inside ur laptop. Put it this way, this laptop is so knackered, I can get to the CPU in 30 seconds... lift off top panel, lift off keyboard and unplug, undo 2 screws holding heatsink plate in, voila! >this i will enjoy!! great sight seeing. What? the resulting explosion? :p ::Babe:: >>Ahhh that's better... yes the voltages are quite different I always thought the P55c was 3.3 and the mobile 2.5 (ish) ... so there you go. It might run quicker... for a short time.!! Ahh but apparently 3.3 is the IO voltage and the core voltage is 2.8! For some daft reason I was thinking perhaps the mobile CPU might run extremely well (and cool) in a desktop. Oh well, it was late... :D ::Highlander:: >>>are you certain that your laptop has a pentium 1 266 in it or am i reading it wrong? Yes. Yes. Intel were not going to make anymore PI's after the 133 but decided to make a 233 version. Then they called it quits to concentrate on PII's, but unfortunately a few 266 PI's (Tillamook) slipped out the factory door and quickly run off down the road into Compaq's assembly line. There's plenty of info on PII 266 but rare on PI 266. >>>I'm no expert on laptop cpu's I am now :D >>>but I would have thought it would be a Pentium 2 based chip which even if the pin layout was the same as a standard chip (which i doubt) is going to be rather difficult cramming into a socket 7. Correct. But there are different versions for laptops as well eg PPS packaging. but it's definately a PI. C4T SiK	SoniKalien (792)
93809	2002-10-30 01:34:00	yes, u can def get 266 PI's. think that was the last on PI laptops.... or maybe even 300. 300 not sure. Ray	rayonline (2134)
1 2