I have the Late 2013 iMac (21.5", 2.9-3.6Ghz i5, Nvidia GeForce GT 750m GDDR5 VRAM). My question is does it have just one fan? Or is it 2?
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Am I right in thinking my iMac has 1 fan?
- Thread starter MartinAppleGuy
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And let me be the first to say (and not for the first time!) the new-generation iMacs are still a work of genius:
My iMac has an i7 3.4Ghz desktop GPU, with a large 27" screen, 32GB RAM, TWO drives in it, a relatively powerful Geforce GPU in it (especially when it came out in late 2012!), speakers, microphone, BT, wifi etc etc, and let's not forget the PSU. All cooled by just ONE nigh-silent fan.
Apple, I still salute you for this one.
Really, I always thought Desktop iMacs had Laptop CPU's and laptop GPU's due to the spice restriction of apples design?
Has this now changed?
I'd wait more than eighteen months before offering up a salute. There's plenty of time yet for it to fry...
Explanation
No, it was always this way. CPU is desktop-class, GPU mobile. Notice the "M" after the GPU names, and for more infos about CPUs in Macs look here: http://www.everymac.com/systems/apple/imac/index-imac.html
No, it was always this way. CPU is desktop-class, GPU mobile. Notice the "M" after the GPU names, and for more infos about CPUs in Macs look here: http://www.everymac.com/systems/apple/imac/index-imac.html
Yes, I know the GPU's are M as you say, like they fit in laptops
(let's be honest the iMac IS just a giant laptop on a stand)
But the CPU's were not proper desktop ones either. they were S variants
You sure?
My 27" iMac uses a 3.5GHz i7-4771. It's a proper desktop processor all right
Processors used in:
21.5": i5-4570R (Iris Pro), i5-4570S or i7-4770S (GT750M)
27": i5-4570 (GT755M), i5-4670 or i7-4771 (GTX775M/GTX780M)
The i5 in my Late 2012 is not an S version, but either way, the S versions used are still desktop CPUs, just with a lower TDP.
The unibody iMac line has always used desktop CPUs - they're even socketed in some models.
Thanks for clarifying that.
I did look and as you say the S versions have a lower power requirement, for only a very small 2% ish drop in performance as they are clocked a little slower also.
Here's a comparison between the i7-4771 (3.5GHz in high end 27") and i7-4770S (3.1GHz in high end 21.5")
http://browser.primatelabs.com/geekbench3/compare/501623?baseline=191168
There's only a 4.07% difference between them.