I never said that.And by your logic Apple should stick with SATA because according to you SATA is fast enough.
I said that Apple should offer affordable SSD options.
I never said that.And by your logic Apple should stick with SATA because according to you SATA is fast enough.
Looking at Apple' system requirement, macOS 10 Sierra takes about 8.8GB.
Obviously, you would want the operating system on the SSD portion. I assume that you lose a GB due to partitioning and such.
So now you have ~ 14GB of SSD for applications and such. This is not even taking into account updates to the OS.
Instead of that, you can get ~500GB SSD.
I've been spoiled by my SSD rMBP. The Fusion Drive in theory is perfect for me because About 500GB of my current 700GB of data is iTunes or media files which don't necessarily need SSD speed. My only reservation is reliability.
If I purchased an iMac, it'd be a long-haul purchase and if the HDD portion fails outside of warranty it's a PITA to fix it.
I never said that.
Strange how I get an eerie silence when I ask someone what are some tasks he/she routinely perform that would benefit from having transfer rate above 600MB/s.
So, instead of actually addressing my points, you spout out numbers I'm already well aware of. Please get to the point, and offer up a use case here.
The entire OS doesn't need to be on the SSD. Never open Pages, Automator, Chess, etc? The OS will move/keep it off the SSD. Those Kernel extensions not needed for your hardware? They don't need to be on the SSD either. The underlying tech will load balance where things go.
And again, if you are buying more than 1TB storage, the SSD is bigger than that (128GB). It would be nice if the 1TB Fusion Drive at least came with 64GB of SSD, but again, this is Apple's thinking on what will work for a sort of "mixed-use" setup where you might have a media collection, thus want some space (movies, music, etc), but also want the benefit from fast boots and the like from an SSD. Without carrying the 500$ price tag of a 1TB SSD that still might not be good enough.
For those determined to get the fastest possible, you have the PCIe SSD that honestly, is aimed more at creative / engineering folks using the iMac for production because the Mac Pro is not quite worth the extra expense for the scale of their work.
Yeah, although I'm not entirely sure we have good reliability data on SSDs either. They are guaranteed to be time bombs due to the write limits, the only question is how many years. But even then, what's the early failure rate compared to HDDs? I wish I knew the answer to that. But yes, basically what you point out is why Apple uses Fusion Drives. The mixed use of media consumption with some amount of editing work makes it an interesting compromise to get options that let a home user have the benefits of an SSD (a PCIe SSD at that) while not having to go external for bulk media storage.
Sure you did.
He's like a robot.
Hey, look!
Nobody has answered that question yet!
Fusion Drive is a really poor substitute for an SSD.
Sure, it's fast until you filled up the 24 GB SSD, then you are back to reading and writing on a hard drive.
More like a bad comedy.
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Hey, look!
Nobody cares!
I feel compelled to play devils advocate for @tubeexperience .
My problem with Apples SSD's isn't price but capacity. PCIe SSD's don't come in an adequate sizes (at least at a realistic price i.e. THOUSANDS of dollars for 2+ TB).
So on that front a SATA SSD could be beneficial for me. Imagine an SSD only fusion? 250+gb of PCIe and 2-3 TB of SATA SSD? Now THAT is something I would be excited to get behind. PCIe SSD are reasonably priced in lower storage capacities and SATA SSD's are reasonably priced in all capacities.
What do you guys think about that? I'm also running for governor in your state....
The fusion drive is actually surprisingly effective - I was sceptical before getting my iMac (2TB Fusion drive) but I wanted the disk space and figured if it was too slow I could always put a Thunderbolt SSD externally. However, in real-life use it's not noticeably slower than my SSD equipped machines and it produces really good results on disk benchmarks (partly due to the insanely fast PCI-e SSD it uses). My machine has over 500GB of storage used at the moment
View attachment 666968
As a comparison, this is a speed test for a Samsung 256GB SSD connected via USB3 to the same machine
View attachment 666969
The way it works is it always keeps a minimum of 4GB free for writes and it intelligently moves frequently accessed stuff (at block, not file, level) onto the SSD for read access. I'd go as far as to say that if you don't need the speed of the PCI-e SSDs then the fusion drive is absolutely fine for the majority of people (and if it isn't, you still have the option of a USB-3 or Thunderbolt SSD externally and as it's a desktop machine it wouldn't be too inconvenient.)
Of course, the 2TB and 3TB fusion drives come with 120GB of SSD, not 24GB so I don't know how well the 1TB one would work
What are some tasks you routinely perform that would benefit from having transfer rate above 600MB/s?
Those results looks pretty impressive. By the way, is the spinning hard drive 5400 or 7200 RPM?
EDIT: Found this video of a speed test for a 2015 iMac with 1TB Fusion drive:
Write speed looks comparable to what you showed for your Samsung 256GB SSD. Read speed looks great.
Those results looks pretty impressive. By the way, is the spinning hard drive 5400 or 7200 RPM?
EDIT: Found this video of a speed test for a 2015 iMac with 1TB Fusion drive:
Write speed looks comparable to what you showed for your Samsung 256GB SSD. Read speed looks great.
Here's the speed test from a Toshiba OCZ TR150 960GB that I bought for $190.
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According to System Information, it's a Seagate Barracuda 7200rpm drive - this one: https://www.scan.co.uk/products/2tb...4-sata-3-6gb-s-7200rpm-64mb-cache-8ms-oem-ncq
Considering that for an extra $110 I could have over twice the storage with the 2TB fusion HD for the iMac which has over 2x better reads speeds and equal write speed to your lesser sized SSD, I think the Fusion HD is the better buy. Even the 1TB Fusion HD for $100 is nearly twice as fast on reads as your SSD. With the left over $90 I could also add extra RAM to the iMac.
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For $300 the 2TB Fusion HD looks pretty impressive when you consider that it uses a spinning HD. I was very impressed with what I saw with the 1TB Fusion HD and that used a 5400RPM HD. Still the blazing speeds of the m.2 pcie hard not to ignore. And those m.2 pcie SSDs are only going to get faster I imagine.
Having a Fusion Drive is like having a fast vehicle that can go 20mph before for an hour before you have to bike the rest of the way.
Having a (SATA) Solid State Drive is like having a slower vehicle that can go 10mph for 10 hours.
Sure, if you were measuring the first hour, you would have much different result than measuring at the 10th hour.
Wow, imagine that you aspire to own a car that can 10MPH for 10 hours which according to you is fast enough. I much perfer to own m.2 pcie SSD which is like owning a car that can go 75MPH or faster for 10 hours. Try harder.
So, instead of actually addressing my points, you spout out numbers I'm already well aware of. Please get to the point, and offer up a use case here.
The entire OS doesn't need to be on the SSD. Never open Pages, Automator, Chess, etc? The OS will move/keep it off the SSD. Those Kernel extensions not needed for your hardware? They don't need to be on the SSD either. The underlying tech will load balance where things go.
And again, if you are buying more than 1TB storage, the SSD is bigger than that (128GB). It would be nice if the 1TB Fusion Drive at least came with 64GB of SSD, but again, this is Apple's thinking on what will work for a sort of "mixed-use" setup where you might have a media collection, thus want some space (movies, music, etc), but also want the benefit from fast boots and the like from an SSD. Without carrying the 500$ price tag of a 1TB SSD that still might not be good enough.
For those determined to get the fastest possible, you have the PCIe SSD that honestly, is aimed more at creative / engineering folks using the iMac for production because the Mac Pro is not quite worth the extra expense for the scale of their work.
Yeah, although I'm not entirely sure we have good reliability data on SSDs either. They are guaranteed to be time bombs due to the write limits, the only question is how many years. But even then, what's the early failure rate compared to HDDs? I wish I knew the answer to that. But yes, basically what you point out is why Apple uses Fusion Drives. The mixed use of media consumption with some amount of editing work makes it an interesting compromise to get options that let a home user have the benefits of an SSD (a PCIe SSD at that) while not having to go external for bulk media storage.
Still not as big as the difference between fusion drive and standard hard drive. I'm quite happy with my 3TB fusion drive.I have owned a late 2015 iMac with both the 2tb fusion drive and 512 SSD, the difference is gargantuan.
Here's the speed test from a Toshiba OCZ TR150 960GB that I bought for $190.
![]()
I don't know whether the difference between SSD and fusion is bigger/smaller than the difference between HDD and SSD, I imagine that would depend on various factors.Still not as big as the difference between fusion drive and standard hard drive. I'm quite happy with my 3TB fusion drive.