Qosmio X300 - one Geforce 9800 GTS runs hotter than the other

Hi.....Does anyone have a clue why 1 of my 2 gfx cards seems to be running alot hotter than the other? I would assume they would both be roughly the same temp. This is an example...Nvidia Defaul @ 1680x1050
512MB GeForce 9800M GTS (Toshiba) 63 C
ForceWare version 186.42
512MB GeForce 9800M GTS (Toshiba) 49 C
ForceWare version 186.42
256MB GeForce 9400M G (Toshiba) 56 C
ForceWare version 186.42
SLI Disabled
When i exited playing F1 2010 yesterday, one of the cars was 90C and the other about 58C......Im sure that isnt right. !!!!
Also i see that it says SLI disabled....again i dont understand this, as i thought my rig automatically switched to SLI mode when needed.
These temp readings was taken from the program speccy.
My laptop is a Toshiba Qosmio X300-15U....running windows 7 ultimate 64 bit. 4gb ram. Q6600@2ghz.
Any help would be really apprieciated.
Thanks

Well i'm sorry you've had such clueless replies to your question.....if i had a cent for everytime a "regular" toshiba contributor says "use compressed air" or "only use Toshiba display drivers blah..blah`.....i'd be a very rich man!
The simple reason why only 1 of your 9800m gts cards is hot is because it is the only card being utilised in most games especially recent ones like F1 2010.
You see the toshiba graphics driver you have installed on your Qosmio is nearly 2 years old-and it doesn't contain any SLI profiles for games that have been released after this driver was created (mid 2009).
Just because you have 2 Nvidia GPUs in the laptop it does not mean that they are being utilised everytime-in fact it is totally dependent on having an SLI profile for specific program/game within the driver itself.
If you open the Nvidia control panel and go to advance settings/manage programs you can scroll down a list of sli profiles for programs installed on you machine and also view a complete list of all profiles within the driver.
It is possible to add you own sli profiles on this screen by browsing for a games executable and adding it to the list of preinstalled profiles.
However in my experience this rarely,if ever, produces much of a performance increase and can sometimes cause instability-and is no substitute for Nvidias own SLI profiles.
So.. the only way you can gain an SLI boost in games is by having the latest driver with the latest profiles....but wait i hear you say..
Toshiba haven't updated the driver for our laptop since 2009!!!
Yes thats the massive downside of owning a gaming laptop especially one as unique as Qosmio x300-just see my post in the Gaming forum-`Toshiba display drivers and what they don't want you to know' and i'm not gonna go into all that again.
All i say is that you can get some great advice on using modified Nvidia drivers on Laptopvideo2GO.com and if you go to the forums and look under Nautis1100 Hybrid and optimus drivers you'll find a new thread especially created for owners of qosmio X300s.
Good luck!

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