how's the heat on haswell so far?

farmermac

macrumors 6502a
Original poster
Jul 23, 2009
774
2
Iowa
im using a 2010 15" MBP i5 with anti glare. I love this computer with the only downsides being heat & size/weight. Battery and hopefully a cooler lap computer with silent fan is what im hoping the 13" MBA haswell will be. What can you tell me, owners of these computers?
 

1BadMac

macrumors 6502
Jan 27, 2010
318
3
Been running email, Safari, and random app installs tonight on new 13" / 128 / 8gb w/ 10.9 DP1. Seems cooler than my 2012. Fan hasn't kicked up at all and iStat shows ~1300rpm. Has been sitting on my lap the last hour or so and cool to the touch. Java installing right now and humming along.
 

curtoise

macrumors 6502a
Apr 19, 2010
529
13
Been running email, Safari, and random app installs tonight on new 13" / 128 / 8gb w/ 10.9 DP1. Seems cooler than my 2012. Fan hasn't kicked up at all and iStat shows ~1300rpm. Has been sitting on my lap the last hour or so and cool to the touch. Java installing right now and humming along.
i5 or i7?
 

lshirase

macrumors regular
Jan 7, 2008
235
3
i7 here:

YouTube 720p + few tabs = 46-55C no fan noise (1200rpm).

Only time i heard the fan kicking in was while playing Diablo 3.
 

jblock

macrumors regular
Jan 4, 2006
181
0
Way cooler. 30 average on my 2013 11" i7/8GB/512 vs 55 average on the same 2012 configuration running the same apps. Fans average 1200 on the 2013 vs. 2000 on my 2012.
 

gloryunited

macrumors 6502
Oct 29, 2010
316
0
That does sound great. IIRC, the fan speed when idle used to be 1900-2000rpm in older MBAs. Now it's just 1200 so it is even quieter!

Does it now feature the assymetrical fan design like the rMBP??
 

paulrbeers

macrumors 68040
Dec 17, 2009
3,960
120
I had my 2011 i5 MBA sitting next to my 2013 i7 MBA while utilizing migration assitant. The 2011 fans spun up almost the whole time, but the 2013 stayed whisper quiet....
 

jblock

macrumors regular
Jan 4, 2006
181
0
That does sound great. IIRC, the fan speed when idle used to be 1900-2000rpm in older MBAs. Now it's just 1200 so it is even quieter!

Does it now feature the assymetrical fan design like the rMBP??
I believe this was introduced on the 2012 Airs.
 

scaredpoet

macrumors 604
Apr 6, 2007
6,627
342
Mine's been setting up FileVault on the SSD. The highest temp I'm registering is the Mem Bank A! sensor at 37 degrees C, the remaining sensors are in the 27-31 degree range, with the fan at 1215 RPM. Very quiet. This is a 2013 i7 MBA, maxed out 8GB RAM/512GB SSD.

It's running cooler than my mid 2010 15" i5 MBP. On that system, the CPU and GPU are in the mid 50s with fans at 2000RPM, doing nothing but having this web page open so I can type this post.
 

Mr. Retrofire

macrumors 603
Mar 2, 2010
5,040
451
www.emiliana.cl/en
I believe this was introduced on the 2012 Airs.
Correct!

ifixit.com said:
From:
http://www.ifixit.com/Teardown/MacBook+Air+13-Inch+Mid+2012+Teardown/9457/2

Step 12

• A few more Torx screws hold the lonely fan in place.

• We were hoping to find a new asymmetrical fan, and we were not disappointed!

• The wider gaps in the fan blades are around 3.6 mm, while the narrower ones are approximately 2.8 mm.

• If you're not familiar with all the hype, the "asymmetrical" design of the fan blades is supposed to disperse sound across a wide range of frequencies, rather than just one, making fan noise "hardly perceivable."frequencies, rather than just one, making fan noise "hardly perceivable."
See also:
 

calvol

macrumors 6502a
Feb 3, 2011
991
2
It looks like Apple has lower the base fan speed. In my 2010 13 MBA, the base speed is 1999rpm, looks like it's around 1200 now with the cool Haswell chip, another source of energy savings.
 

Stingray454

macrumors 6502a
Sep 22, 2009
587
104
It looks like Apple has lower the base fan speed. In my 2010 13 MBA, the base speed is 1999rpm, looks like it's around 1200 now with the cool Haswell chip, another source of energy savings.
My 2012 also hovers around 2000 rpm when not doing anything special (surfing, mailing, watching movies and such), so that seems to be the old default setting. Completely silent, but still - cutting the rpm down to 1200 should indeed save a lot of power, happy to see them being able to do that.
 

2IS

macrumors 68030
Jan 9, 2011
2,937
427
My 2012 also hovers around 2000 rpm when not doing anything special (surfing, mailing, watching movies and such), so that seems to be the old default setting. Completely silent, but still - cutting the rpm down to 1200 should indeed save a lot of power, happy to see them being able to do that.
Every little bit helps, but it's hardly a "lot" of power. Very little actually.
 

Jaro65

macrumors 68040
Mar 27, 2009
3,707
573
Seattle, WA
Maaan, that new MBA sure sounds like a nice machine! Now that I'm seeing the results, I have to say that Haswell delivers even more than I was hoping for.
 

Stingray454

macrumors 6502a
Sep 22, 2009
587
104
Every little bit helps, but it's hardly a "lot" of power. Very little actually.
Do you have any numbers on this? Not that I demand proof, but I got interested in the actual savings and tried to google it, but didn't get any great results. The few hits I found indicated that the fan itself is quite the power hog, but changing the RPM from 2000 to 1200 shouldn't make a big difference, a watt or so maybe. Still counts, but less than I expected. Once we get to laptop processors that doesn't require fans, then the saving should be pretty significant - but that's still some time away :)
 

luisito

macrumors regular
Nov 15, 2012
215
0
No heat whatsoever, cool to the touch, considering I have watched youtube videos, while restoring my entire iTunes library from an external hard drive.. I have also watched some hulu videos. As a matter of fact, I haven't heard fan noise since I got it, makes me think I got no fan! :D
 

musika

macrumors 65816
Sep 2, 2010
1,284
448
New York
No heat whatsoever, cool to the touch, considering I have watched youtube videos, while restoring my entire iTunes library from an external hard drive.. I have also watched some hulu videos. As a matter of fact, I haven't heard fan noise since I got it, makes me think I got no fan! :D
i5 or i7? 4GB RAM or 8GB?