So I guess it is advisable to either gofer the mid-tier i5 for better thermal load/power usage or all the way to i7 for maximum performance?
Go for the i7 and 580 hands down. Get performance!
So I guess it is advisable to either gofer the mid-tier i5 for better thermal load/power usage or all the way to i7 for maximum performance?
Yes because that money you spend upgrading that ssd you will totally get back(not)
If you need it buy it, but you might as well bootcamp of a cheap samsung T3.
A lot of people are talking themselfs into alot of upgrades on these forums because it's a good investment down the road.
You're probably better off buying somestock or bitcoin or something..
I rather have 2500 mbyte/sec read speed than 400 ..Of course upgrading the internal SSD Is totally dependent on the users needs. To add an external 500 gig SSD With case will cost about 200 bucks and give you about 400 MB per second. To get an External that equals the internal SSD performance would be much more expensive. Even more expensive than the $400 to $500 it costs to upgrade the internal drive From 512 to 1 TB.
Wow that's a pretty small difference between the two i5 chips given how much higher the thermal load is on the 7600K. Glad I opted for the mid-tier i5 3.5 GHz/Radeon 575 model once I decided I didn't need the i7. I'm getting a markedly cooler chip and not missing out on much performance.
Hi. Now I am thinking the same thing. Can i ask where you saw the thermal numbers for each chip? downloaded that file the other person posted but it did not show that.
Since all i do is Xcode and some screen recording, I am wondering if by going down to the mid i5 instead of the i7 would make me happier with a minimal amount of speed loss since a quiet iMac is important to me and if means 8.5% less CPU but X amount of times less the fans will kick in.
it might just be the decider for me.
thx
if one were to go the 4.2 route....couldn't this help to keep excessive fan noise down?
(depending on your workflow)
Turbo Boost Switcher app
https://gumroad.com/l/YeBQUF
No.
But when I get mine, (If I go the 4.2 route) I will for sure.
In theory marking out normal apps like Email and safari from going into Turbo mode would seem to help overall leaving the real apps that really need the extra power to use it if needed.
Yes, it does help, but only to a certain extent. For really heavy stuff that can max out the CPU (like software HEVC 4K decoding), it does increase the time it takes the cores to get hot, but it will still eventually get there. It just takes longer to get there.if one were to go the 4.2 route....couldn't this help to keep excessive fan noise down?
(depending on your workflow)
Turbo Boost Switcher app
https://gumroad.com/l/YeBQUF
The 4.2 never gets hot enough when using just Mail and Safari, so Turbo Boost Switcher in that context is completely superfluous. With that type of usage, I'm typically in the 40+ degree range and it never goes above 50, so the fan always sits at 1200 which is the minimum speed, and effectively silent.No.
But when I get mine, (If I go the 4.2 route) I will for sure.
In theory marking out normal apps like Email and safari from going into Turbo mode would seem to help overall leaving the real apps that really need the extra power to use it if needed.
Hell, even running Geekbench 4.1, which takes over 2 minutes on the Core i7 7700K, won't ramp up the fan. It still always just sits at 1200 rpm and silent. Same with playing 4K 2160p30 h.264 video from my iPhone using IINA video player. Fan just sits at 1200 rpm and silent. In fact, the CPU power usage stays below 10 Watts. GPU power jumps to over 30 Watts though.
Yeah, h.264 playback is in hardware. CPU usage is something like 9-12% for 4K h.264 from an iPhone but on just one core. The other cores have 0-3% CPU usage.CPU power usage at below 10W? Wow, that's nice to know.![]()
Yeah, h.264 playback is in hardware. CPU usage is something like 9-12% for 4K h.264 from an iPhone but on just one core. The other cores have 0-3% CPU usage.
This is why I think it's so important if you're buying now to go for Kaby Lake (2017 iMac, 2017 MacBook Pro, or 2017 MacBook). Both 8-bit and 10-bit HEVC 4K decoding will be in hardware. Or in the very least, Skylake (2015 iMac, 2016 MacBook Pro or 2016 MacBook), which has 8-bit HEVC 4K decoding in hardware. Bad idea to get an older refurbished machine in 2017 for this reason, no matter how cheap it seems.
I use that app & it seriously helps. The fan almost never runs & the performance is still great!No.
But when I get mine, (If I go the 4.2 route) I will for sure.
In theory marking out normal apps like Email and safari from going into Turbo mode would seem to help overall leaving the real apps that really need the extra power to use it if needed.
[doublepost=1498727298][/doublepost]Lovely machine to replace my 2011 27" – but for one thing: FAN NOISE!!You got in early, ordered and now have received your iMac. Are you happy with your purchase? Any regrets? Wish you had upgraded the CPU, SSD or ___? What about fan noise? I'm particularly interested in whether your iMac is quiet or not and what CPU choice you made when you make that observation. If you were ordering again, what changes to your order would you make?
The rest of us procrastinators are waiting to hear from you brave early adopters!
Thanks in advance!
JayFromNoVa
[doublepost=1498727298][/doublepost]Lovely machine to replace my 2011 27" – but for one thing: FAN NOISE!!
I'm about to raise a complaint with Apple (well, an enquiry to start with, then...)
Upgrading was a breeze. Microsoft has a lot to learn from Apple. The entire out of box experience was so simple and it was fast. Open box, plug stuff in put in your old time machine disk. It will find and restore your computer. I was amazed that everything worked even my Universal Audio Twin MkII Quad interface. Usually that kind of stuff has drivers and licensing stuff but it just worked.
My desk looks so much cleaner since going from the 2012 mac mini to the i7 27inch cut down on the clutter big time
Oh the screen is amazing, huge difference in clarity and I had a good dell 24inch IPS monitor. The computer is fast! love scrolling through my photos library so much room.
OS X makes good use of 5K I do not feel like the letters are tiny etc.. it just looks sharper.
The SSD should be cooler than a Fusion drive too.
The PCIe SSDs I've seen reviewed run at about 50-75% of the power of traditional 7200 rpm drives.The PCIe SSD in iMacs including the PCIe SSD portion of Fusion drives are capable of producing a lot more heat than HDDs. This isn't just limited to Macs but PCIe SSDs in general. For comparison they will begin to throttle at temps many HDDs will fail outright.
When referencing temps SSD vs Fusion is moot. Only consider price, speed and storage capacity between the two.
When the case fan died in my HTPC I only noticed because of the 80C+ warning of the PCIe SSD. Some motherboards offer active M.2 cooling while others even go as far as liquid cooling solutions like some the ROG mobos from Asus.
Hell, even running Geekbench 4.1, which takes over 2 minutes on the Core i7 7700K, won't ramp up the fan. It still always just sits at 1200 rpm and silent. Same with playing 4K 2160p30 h.264 video from my iPhone using IINA video player. Fan just sits at 1200 rpm and silent. In fact, the CPU power usage stays below 10 Watts. GPU power jumps to over 30 Watts though.