NVIDIA Geforce GTX 660M Release Information + CUDA Core Count

[Cloudfire]

I don`t think the Kepler chips themselves run much hotter than Fermi to be honest. It is Acer that have screwed the pooch. All the reviews of the Acer timeline says there is a hotspot under the laptop that get extremely hot. After all, the Acer is a ultrabook. You won`t find many GT555M inside ultrabooks btw...

I think Acer used some light and very thin materials around the GPU or whatever is causing the heat, thus creating a risk for burn.

That’s nothing compared to center-bottom of the laptop, where we read temperatures of up to 128 degrees after playing Battlefield 3 on Ultra. That’s unacceptably warm - it’s hard to imagine using this laptop on anything besides a desk if you want to engage the GPU.

That said, top-center on the bottom of the M3 does get a bit warm; it's not uncomfortably hot and certainly won't scald you, but there's definitely a single sharp source of heat inside the M3.

Here is a guy who have been OVERCLOCKING his GT 650M inside the Lenovo Y480.

His GPU is 44 degree celsius while idling, and max 71 degree celsius under HEAVY overclock under full load. So yeah...
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[gamba66]

I don`t think the Kepler chips themselves run much hotter than Fermi to be honest. It is Acer that have screwed the pooch. All the reviews of the Acer timeline says there is a hotspot under the laptop that get extremely hot. After all, the Acer is a ultrabook. You won`t find many GT555M inside ultrabooks btw...

I think Acer used some light and very thin materials around the GPU or whatever is causing the heat, thus creating a risk for burn.





Here is a guy who have been OVERCLOCKING his GT 650M inside the Lenovo Y480.

His GPU is 44 degree celsius while idling, and max 71 degree celsius under HEAVY overclock under full load. So yeah...
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Isnt that the Samsung Q470? Atleast the GPU Z says the Card manufacturer is samsung.. But I really havent checked

Like I said we will just have to wait and see, from this point on everything is just guessing and speculating.. The few hard facts we have dont give us alot of info about throttling or the new kepler running hot...

Also the problem isnt the GPU getting too hot, but the combination of the GPU and CPU.. I can only repeat.. IVB still has the same throttling limits but offers more perfomance, in combination with kepler it could become very hot and throttle, we wont know until the first IVB laptops with kepler gpus are being tested

A respected member from a german alienware forum (supposedly an engineer) even claims that IVB is more likely to throttle than sandy bridge.. So lets wait and see

Also turbo boost is an indication of the cooling solution not being able to handle the full power of a CPU, the turbo boost is only supposed to be enabled for a short time when the CPU is in intensive situations, and not for a long time like when playing Battlefield 3..

Also that the upcoming MSI GE60 and GE70 fat gamer notebooks feature an 650m doesnt really talk for the 650m being cool

http://www.notebookjournal.de/news/k...idia-gpus-4388

[yknyong1]

With GPU Turbo pushing the clocks until TDP is reached... it is little wonder cards are hot.

[gamba66]

With GPU Turbo pushing the clocks until TDP is reached... it is little wonder cards are hot.

Not really TDP arent exact measures, only theoretical values..

[yknyong1]

In fact the cards are now making the most use of the thermal and power capacity, so the result you know.

[gamba66]

With GPU Turbo pushing the clocks until TDP is reached... it is little wonder cards are hot.

you should read this then..

Intel's TDP rating is NOT max power and SB heat
There's a lot of misinformation on this board about TDP ratings and many are in denial about the potential heat issues with Sandy Bridge. What many don't know is: 1) Intel's TDP rating significantly underrates maximum power consumption, 2) TurboBoost duty cycle is NOT included in the TDP rating, and 3) TurboBoost is causing heating problems in the MBP, which has better cooling capacity than the Air.

1) Misconception 1: TDP represents max power rating

From the Intel Datasheets:
“The TDP numbers are not indicative of the maximum power the processor can dissipate under worst case conditions.”

Intel is listing TDP numbers that are significantly lower than the actual maximum power draw of their CPUs. They are then relying on the fact that most applications barely use the CPU, assuming that it will remain idle most of the time.
Athlon 64 for Quiet Power | silentpcreview.com


2) Misconception 2: Turbo-boost over-clocking is captured within the heat profile of TDP rating.

From Techreport on SB: The Turbo algorithm does something that may seem a little counterintuitive at first, allowing the CPU to ramp beyond its maximum TDP... taking advantage of the lag between when a relatively cool idle chip begins to warm up its environment.... the chip opportunistically pushes beyond its rated thermal peak by running at higher-than-usual frequencies within its Turbo Boost range. Once the surrounding system has warmed up or enough time has passed (the algorithm is complex, and Intel hasn't shared all of the details with us), the chip will drop back to operating within its TDP max... Turbo Boost algorithm incorporates not just the CPU cores but the IGP, as well; it can raise the operating frequency of the graphics processor when the CPU cores aren't at full utilization.

3) Misconception 3: SB heat issues in 2011 MBP won't appear in 2011 MBA

Since the Air ULV chips also use TurboBoost, expect the same thermal behavior as this poor MBP owner observes:

"I just ran my "old" 13 MBP (2010 edition - 2.66 GHz) and my day-old 13 MBP (2011 edition - 2.7 GHz) with identical conditions, and performed the same test on both: launch the game "Portal" and have it just sit on the main intro screen (which shows 3D graphics slowly panning around a room, plus the game's start menu).

On the 2010 MBP: CPU Temp: 149 F, Fan: 1999 rpm
On the 2011 MBP: CPU Temp 192 F, Fan: 6200 rpm

If I'm only running a simple application (like MS Word), the 2011 MBP actually runs a few degrees cooler than the 2010 system. However, as soon as the system is having to track a large number of open windows (whether those programs are graphically intensive or not), the CPU starts to heat up rather dramatically, and the fans ramp up to "jet turbine" mode.


With the Air's limited cooling capacity by virtue of it's case design, I expect SB heat problems to be worse than the MBP because it has less ability to respond to instantaneous heat caused by TB, even though it will be using the ULV chips. Also, keep in mind that the Intel's solution to prevent heat problems involves "throttling" the CPU through it's power control unit, but ALL major PC OEMs are experiencing throttling issues with SB!

Source

[yknyong1]

TDP differs by manufacturer though...

[Cloudfire]

Isnt that the Samsung Q470? Atleast the GPU Z says the Card manufacturer is samsung.. But I really havent checked

Like I said we will just have to wait and see, from this point on everything is just guessing and speculating.. The few hard facts we have dont give us alot of info about throttling or the new kepler running hot...

Also the problem isnt the GPU getting too hot, but the combination of the GPU and CPU.. I can only repeat.. IVB still has the same throttling limits but offers more perfomance, in combination with kepler it could become very hot and throttle, we wont know until the first IVB laptops with kepler gpus are being tested

A respected member from a german alienware forum (supposedly an engineer) even claims that IVB is more likely to throttle than sandy bridge.. So lets wait and see

Also turbo boost is an indication of the cooling solution not being able to handle the full power of a CPU, the turbo boost is only supposed to be enabled for a short time when the CPU is in intensive situations, and not for a long time like when playing Battlefield 3..

Also that the upcoming MSI GE60 and GE70 fat gamer notebooks feature an 650m doesnt really talk for the 650m being cool

News - MSI GT60/70 und GE60/70 - Kommende MSI Gaming-Boliden setzen auf neue Nvidia-GPUs auf notebookjournal.de

ooops my bad. It is a Samsung Q470 and not a Lenovo
Guess we will have to wait and see some reviews before coming to a conclusion about the heat with Kepler yes. But I sincerely hope not that the turbo isn`t limited by heat like Sandy Bridge is, but is able to turbo fully throughout the gaming session. I just imagining this turbo to be a power saving feature that downclock while idling or doing older easier games, while is able to do full turbo when gaming in demanding games.

But you`re right, turbo means more heat. But laptop OEMs is responsible to make a cooling system and use materials that can handle this turbo heat without destroying the laptop or hurting the owners though

Oh well, still a few questions that need to be answered

[Botsu]

sorry for double posting.

[Botsu]

Kepler have just been launched. And the high end of the 600 series have not even been spoken off. Lets say GTX 680M arrive in July, 4 months from now, do you really expect the 700 series to launch the month after the high end 600 series is launched?

Yep, I expect the mobile GK 104 to be launched as GTX 680M and then the 700 series a bit later, or GTX 780M outright. The first case would be just like what they did with the GTX 485M.

Shouldn`t the replacement for 570M be 665M or something instead instead of jumping up to 700 series and having to deal with 600 and 700 series at the same time? I atleast think we won`t see 700 series until very late this year

That would make no sense. Nvidia doesn't have a track record of playing with the last digits to squeeze their new products in the line of existing ones. And they'd be right for once as it would be plain stupid. The GTX 670/675M are not fated to last, so they have no interest in those - soon to be - outdated chips overshadowing their new mobile Kepler.

Releasing some new mobile parts featuring the GK 106 (768CC) and using names like "GTX 665M" would only "work" if it's performing significantly worse than the GTX 670M, which is very highly unlikely as in fact it's probable it will trounce it, and it would at all events make the nomenclature incomprehensible.

Nvidia won't show concern for the implied "rule" that says you can't release new series too soon after the previous & for no apparent good reason, especially not with their recent track-record, and aren't likely to let themselves be bothered by a crowded nomenclature of GTX 660M, 665M, 670M, 675M, 680M, etc. They'll launch the 700 series sooner than anyone thinks and be done with it, and few people will find reasons to object.