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I now have an iMac Pro and maxed out 2019 iMac. AMA.
- Thread starter macduke
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So, you believe that nice round numbers assigned by marketing departments are real specs. Uhhh... I hate to break this to you...
Trying to find that comparison — it was so 7 days ago. I’ll find it but I can’t just pull up every post i’ve done in chronological order (or can I?). The search terms I’ve entered aren’t finding it.
Anyway, here’s a recap. 24GB file, 7200rpm SATA III HHD, Samsung 860 EVO SATA III SSD, Three Docks: USB 2/eSATA, USB 3, USB-C, 2017 iMac Pro, 2010 & 2011 iMac with eSATA.
USB 2 – 9 minutes both drives, all computers. USB 2 is the bottleneck.
eSATA (2011), USB 3, USB 3.1 over USB-C — SSD 1 min 10 seconds; HDD 4 minutes. Bottlenecks: Speed of 860 & HDD platter
eSATA (2010) — SSD 1 min 55 sec (I don’t recall the exact speed but in the ballpark) HDD 4 minutes. Bottlenecks: SATA II (2010 iMac does not support SATA III); HDD platter.
I couldn’t care less about the theoretical specs and the vast amount of nonsense that people spew based on things they’ve read on the internet. These were actual real world tests with repeatable tests.
[doublepost=1557727363][/doublepost]
Why? You clearly have no skin in the game.
Trying to find that comparison — it was so 7 days ago. I’ll find it but I can’t just pull up every post i’ve done in chronological order (or can I?). The search terms I’ve entered aren’t finding it.
Anyway, here’s a recap. 24GB file, 7200rpm SATA III HHD, Samsung 860 EVO SATA III SSD, Three Docks: USB 2/eSATA, USB 3, USB-C, 2017 iMac Pro, 2010 & 2011 iMac with eSATA.
USB 2 – 9 minutes both drives, all computers. USB 2 is the bottleneck.
eSATA (2011), USB 3, USB 3.1 over USB-C — SSD 1 min 10 seconds; HDD 4 minutes. Bottlenecks: Speed of 860 & HDD platter
eSATA (2010) — SSD 1 min 55 sec (I don’t recall the exact speed but in the ballpark) HDD 4 minutes. Bottlenecks: SATA II (2010 iMac does not support SATA III); HDD platter.
I couldn’t care less about the theoretical specs and the vast amount of nonsense that people spew based on things they’ve read on the internet. These were actual real world tests with repeatable tests.
[doublepost=1557727363][/doublepost]
Why? You clearly have no skin in the game.
Thanks for those numbers. Of course many other factors play into the speeds of file transfers in real life as you illustrate in the tests you provided.
It is not a major deal for most but it is unfortunate as there is literally no downside to upgrading the speed of the USB-A ports to gen 2 speeds (the Z390 supports these speeds natively). My point about reducing the bottleneck on NVMe drives while TB3 is dedicated to an eGPU also still stands.
I am interested in this topic as I hope to purchase a 2019 model later in the year with eGPU and external SSDs. Anyway thanks again for those tests!
I have them occasionally, but not so much I regret buying it. Also only on restart or startup on occasion. Never in middle of work. But, I have turned off most T2 functions so that has helped keep the issue at bay.
That's an issue for Apple and Intel to work out and only if they want to. There is nothing you, I or anyone here can do about it.
Do you notice any difference in fan noise when at idling speed or otherwise?
I've got the i9 iMac and wondering if the iMac Pro is quieter with its "improved" cooling etc
Many thanks
I've got the i9 iMac and wondering if the iMac Pro is quieter with its "improved" cooling etc
Many thanks
The iMac Pro is the quietest machine I have ever owned. I have to be absolutely slamming it with work before I can hear the fans.
That's amazing. Conversely, does the iMac 5K ramp up the fans fairly quickly during semi-taxing video work like or does it only do so under sustained heavy load?
As I understand it, the regular iMac is an iOven, and will ramp the fans up quickly under heavy load.
The iMac Pro is much quieter than the iMac 5K under load. I have been working with video today and doing video stabilization I can't even hear the fans kick up. Now I'm in an office environment, and even with my door closed the air is constantly running in my office, so it's difficult to tell how quiet this thing gets idle. But I also barely notice my 5K iMac under idle, and I have a pretty quiet studio in my basement <30dB ambient. At my office at work I'm averaging around 50dB ambient.
I will try to do some tests on my home machine over the weekend after I get these videos edited so I can compare both machines. So far I wouldn't say that the iMac Pro feels any faster than my machine at home, just quieter. Maybe slightly faster on video stabilization when I have to run it on a longer clip. It's probably throttling much slower. Also it looks much nicer. I might test some AAA Mac game like one of the Tomb Raiders on both machines at some point since I won't be boot camping my work machine just to see how it compares to the Vega 56 for gaming.
The only time I've heard the fans in my iMac Pro was when I ran the Fans Test in TechTool Pro 11.
Ok.. now I know what they sound like at 2556 rpm. Inaudible in my office below 1000 rpm.
Ok.. now I know what they sound like at 2556 rpm. Inaudible in my office below 1000 rpm.
Thank you for the info, much appreciated. My i9 seems like a beast in terms of power but after 2 days the fans are already annoying me.
I know the iMac Pro's cooling is completely different with the 2 fans etc but do the fans idle a lot slower than the (default) 1200rpm of the 5k iMac?
I can hear mine idling at 1200 and the highest I think I've seen them get up to is 1400 around 65-70 degrees c.
I'm now thinking I might make use of the 2 weeks notice to return then 2 weeks to actually return to Apple policy..see what announcements get made at the start of June and weigh up whether to go for the iMac Pro or not...
Yes.
The range is spec'd at 1100–2500 RPM.
The fans appear to be running @ 1075 when the test begins but the speeds drop to around 898 during the test before they recover to 1075 at the end. I ran it many times.
Here's a non-scientific article:
https://www.imore.com/imac-pro-vs-imac-5k