Converting brings my PC to its knees !! - Page 2

speakingtohe · 09-27-2010, 03:27 AM

Again interesting. My impression was that the cpu generated a lot of heat ergo the heatsinks. Probably I am behind the times in that?

Helen

MrPLD · 09-27-2010, 03:34 AM

Helen,

It depends on the system. Little systems using the Intel Atom don't generate a lot of heat (about 20W); however most "normal" computers still have their CPUs producing quite a lot of heat (45W and a lot more), as you say, hence the heatsinks

Paul.

itimpi · 09-27-2010, 04:25 AM

The amount of heat a CPU generates depends on how hard it is working. On a desktop large heatsinks can be used to handle sustained periods of maximum CPU usage without an excessive heat build-up. On notebooks where less space is a available compromises are often made on the heatsink on the basis that such machines do not use the CPU at its maximum for sustained periods. This is particularily the case on the lower-price notebooks/netbooks as providing more sophisticated heatsink solutions is expensive.

Lady Fitzgerald · 09-27-2010, 05:34 AM

Quote:

Originally Posted by MrPLD

As for the heat issue, that'll be the CPU + HDD probably, though your move to put it onto an elevated surface with an airgap underneath is a good idea, your drive will thank you by living for longer. Most things in laptops will die over time due to heat, a very big reason that I'm a lover of these Netbooks with very low power requirements

Paul.

They also make "cooling pads" that have little fans in them you can place under laptops to help keep them cooler.

MrPLD · 09-27-2010, 05:39 AM

Quote:

Originally Posted by Lady Fitzgerald

They also make "cooling pads" that have little fans in them you can place under laptops to help keep them cooler.

Yes, they help a lot. I'm not really a big laptop person, I do have my little 10" netbook which does a wonderful job when I'm on the road (which is exceedingly rare - too much of a hermit

). I remember a few times in the old days where my laptop would burn my legs if I left it on too long

uch:

Lady Fitzgerald · 09-27-2010, 06:08 AM

Quote:

Originally Posted by MrPLD

Yes, they help a lot. I'm not really a big laptop person, I do have my little 10" netbook which does a wonderful job when I'm on the road (which is exceedingly rare - too much of a hermit

). I remember a few times in the old days where my laptop would burn my legs if I left it on too long

uch:

I'm also a netbook person. I have it for when I travel and in case my desktop should die on me.

theducks · 09-27-2010, 10:58 AM

Quote:

Originally Posted by speakingtohe

Again interesting. My impression was that the cpu generated a lot of heat ergo the heatsinks. Probably I am behind the times in that?

Helen

CPU, Graphics chips both generate lots of heat because they are both, very complex internally and the both run at high speeds(and suck lots of power to get there).
Many. every day tasks like Web browsing, memo writing, use short bursts of the processor capacity, then go back to idle.

A "conversion" runs hard for a goodly chunk of time. Laptops are notorious for heat problems as they are cramped internally and strive to avoid the weight of additional cooling components found in Desktop systems. (Open Windows Task Manager:Process Tab and watch the Idle Process [unused capacity], System Monitor in Ubuntu. for grins.)

So I am not surprised that things heat up. during a conversion.
BTW I use a Wire Cake cooling rack under my Toshiba.

MrPLD · 09-27-2010, 11:17 AM

Quote:

Originally Posted by theducks

So I am not surprised that things heat up. during a conversion.
BTW I use a Wire Cake cooling rack under my Toshiba.

An excellent way to keep your cookies warm too while you're eating them at the computer

ManosHandsOfFate · 09-27-2010, 05:54 PM

Quote:

Originally Posted by theducks

BTW I use a Wire Cake cooling rack under my Toshiba.

That's an awesome low tech solution. I love it!

speakingtohe · 09-28-2010, 03:53 AM

Quote:

Quote:
Originally Posted by theducks
BTW I use a Wire Cake cooling rack under my Toshiba.

That's an awesome low tech solution. I love it!

Yuppers! Although for me the pop case had the advantage of a correct height raise, non wobbly surface and an awesome shade of fire engine red.

chilady1 · 09-28-2010, 01:17 PM

Quote:

Originally Posted by dwanthny

Go to preferences - behavior and change job priority to low. Restart calibre and you're all set.

Can you explain for a non-technical person why changing the priority low lessens the strain on the PC? Just curious and thanks for a great tip! When I covert I don't time out but my entire system does start to drag somewhat, so this was a very helpful tip.

Just curious as to what changing the setting does to the system? Thanks!

itimpi · 09-28-2010, 01:56 PM

Changing the priority to low does not reduce the overall load. What it does mean is that the calibre processes only run if other higher priority applications do not want to run. Since most applications run at 'normal' priority and do not also tie up the CPU the user experience is that the system is more responsive. Calibre is still consuming as much resource as is not used by higher priority applications, but now it is not done at the cost of degrading other applications of normal priority.

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09-27-2010, 03:27 AM	#16
speakingtohe Wizard Posts: 4,812 Karma: 26912940 Join Date: Apr 2010 Device: sony PRS-T1 and T3, Kobo Mini and Aura HD, Tablet	Again interesting. My impression was that the cpu generated a lot of heat ergo the heatsinks. Probably I am behind the times in that? Helen

09-27-2010, 03:34 AM	#17
MrPLD Author's pet-geek Posts: 933 Karma: 1040670 Join Date: Sep 2010 Location: North Queensland, Australia Device: Kindle 3 Wifi, Onyx Boox M96	Helen, It depends on the system. Little systems using the Intel Atom don't generate a lot of heat (about 20W); however most "normal" computers still have their CPUs producing quite a lot of heat (45W and a lot more), as you say, hence the heatsinks Paul.

09-27-2010, 04:25 AM	#18
itimpi Wizard Posts: 4,553 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	The amount of heat a CPU generates depends on how hard it is working. On a desktop large heatsinks can be used to handle sustained periods of maximum CPU usage without an excessive heat build-up. On notebooks where less space is a available compromises are often made on the heatsink on the basis that such machines do not use the CPU at its maximum for sustained periods. This is particularily the case on the lower-price notebooks/netbooks as providing more sophisticated heatsink solutions is expensive.

09-28-2010, 01:56 PM	#27
itimpi Wizard Posts: 4,553 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	Changing the priority to low does not reduce the overall load. What it does mean is that the calibre processes only run if other higher priority applications do not want to run. Since most applications run at 'normal' priority and do not also tie up the CPU the user experience is that the system is more responsive. Calibre is still consuming as much resource as is not used by higher priority applications, but now it is not done at the cost of degrading other applications of normal priority.

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