CPU upgrade

[BlueRoNe]

I have DV7 Pavilion with Compal 30F4 mainboard with BIOS ver. F2D. with 4 Gb DDR2 6400 RAM ;PM45 Ich-9 chipsets. In ussualy cycle of FAN replacement every 8 moths ( overheating problem - dust , fan getting issue) I have decided after some reserch to switch orginal T5800 CPU to T9600 CPU. Was concerned about diffrence 800 Hz to1066 Mhz FSB - but when switched everything went fine. Temperatures drops real low from normal 45 - 60 C with T5800 to 30 - 50 C with T9600. DDR`s start working faster with lower CL . Then without reason laptop reboot itself. I did switched one of DDRs to spare one with exact same CL cycle. Same problem occurs. Like some overheating in RAM ??. Next day didn`t boot up. No power - no diode LED indicator at power hub. Checked with multimeter whole power adapter - no jumps no lack of connection. After reconecting power cord power LED sign and try to boot. Laptop stand up but didn`t post anything. Num and Caps Lock indicators blinks 3 times. After DVD unconnect and power button and keyboard -recive a normal boot to a system. Closed - conected anything back and worked. After 6 hr of constant work with movies , internet acivities with 58 C at GPU and 40 C sudennly reeboot itself. There is not any known for me power issue at mainboard - checked some capacitators , condensators etc. The questions are  :
- does that problem occurs because of higher FSB rate and higher temp at DDR ?
- is possible to place DDR 2 with 512 Mhz speed insted of those wich 400 Mhz ? then temp should drop at RAM ( Im not sure that the mainboard will cooperate  )
- maybe I did miss something - what cause that problem ?

Thank you for all answers in advance 🙂 

 

[erico]

Honestly, I expect it is because the motherboard is ten years old.

I am amazed that it is still working.

Your mention of using a T5800 CPU caught my eye.

[BlueRoNe]

hmm for me nothing unusual - still got working older PC`s at my basement. Beside from my observation that Hp model is like Mercedes W123 - can do milions of  miles on one engine hehe. I got 3 Hp laptops at home. That with CPU changed is grandpa to rest. HP G3 is still working , other one after one rebaling of GPU got dead - using as spare parts. I do belive it will stay longer than those new one`s with diffrent solder material. Why you expected it from 10 yrs mainboard while before changed was working fine ? 

[erico]

There is a reason that businesses replace their  PCs and notebooks between three and five years.

PCs are not meant to last forever.

Those that last just happen to superior units.  Enjoy your oldtimer PCs.

🙂

[BlueRoNe]

Thank you for answer . I m aware of things being older etc. My question was about RAM at 533Mhz wil they work with that mainboard. Reason why Im still with HP Products is because of this laptop. So what about that RAM ?? 

[Huffer]

DDR2-800 is specified but DDR2-667 will work. I don't think running slower memory is going to make the system run cooler. The memory and FSB speeds are designed to work in tandem and if you install out of spec memory you create some conflicts that may perversely make it actually run hotter. 

[BlueRoNe]

Thank you for answer. Yes you are right about slower memory. Maybe I posted it wrong . I was courious about putting faster memory DDR 2 1066 ( PC2 8500, PC28600 ) - 533 Mhz for wich BUS speed  is 266 Mhz is normal one. 
 Right now I`m running DDR2 800 ( PC2 6400 ) - 400 Mhz for wich normal  BUS speed is 200 Mhz. AFter CPU upgrade they are working like in OC mode 🙂 with higer BUS speed  266 Mhz  - so I was concerned about higer temperatures on them.
 I can`t check it by replace them for faster - becuse I don`t own them yet. So I`m not sure it will resolve problem. 

[Huffer · Accepted solution]

I would not waste my money on faster memory. The memory bus on the motherboard won't run it faster than 400 mhz x 2. 

[Cheyenne4]

Huffer, on the subject of 'old' HP laptops, I'm regularly running Win 10 Pro Insider Releases on a 12 year old HP Compaq nx9420 with no problems.  Only upgrade was from 2 to 4 gigs RAM, which only recognizes 3.4 gigs.

[Huffer]

I did not call you out for the laptop's being "old". I collect vintage laptops so am fully understanding in this area. However, just because something can be done does not necessarily make it a good idea.