I get the feeling that we won't see anything till at least the fall or later. But who knows...
Any theory as to why?
I get the feeling that we won't see anything till at least the fall or later. But who knows...
I wonder if the new version would be based on the soon-to-be-released AMD ryzen CPU....
Not really, just a gut feeling and remembering the long delay in the past when we were at this stage with late year announcements. Also the lack of any hints or new models in the OSX code and Intel's lack of interest in the desktop market and Apple's attention elsewhere.Any theory as to why?
Both modern AMD and Intel processors are on "x86" (or AMD64 specifically) and are generally interoperable, unless you use vendor specific instructions or features. But even in those cases, AMD's processors should work most of the time, since it generally covers all the stuff that is supported by/matters in the old Intel processors, and software usually would cater the difference in CPU capabilities.I would be surprised if Apple departed from Intel given the code change required. We would have seen something in the betas by now as AMD is not anywhere close to intel on the CPU features. If Apple chose to neglect the code, we could see processor capabilities only half of what they have now. Likely, everything is leaning on the graphics card upgrade as the current CPU is good enough. An entire redesign is also a possibility.
Not entirely true. Ryzen is expected not to ship with native wide packed math instructions and transactional memory, but these generally do not matter in PC/workstation, and very likely irrelevant to you other than being a bullet point on the box. Otherwise, instruction sets are more or less on the same ground, and AMD's Zen is expected to make a big architectural leap to catch up with Intel.AMD is not anywhere close to intel on the CPU features.
They would be massively undercutting the inflated top-of-the-line models, because Intel has been a monopoly in those segments for years. But the lower the spectrum you go, the less (or no) the undercutting would be. AMD wants better margin and higher ASP.I'm just thinking if the leaked AMD Ryzen benchmarks are to be believed then it's possible AMD will be releasing CPU's well capable of going neck to neck (or maybe better?) than Intel's current top chips. The other speculation is that AMD will be massively undercutting intel on price.
Well, they could have refreshed in late 2016 with the Polaris or Pascal GPUs, perhaps faster PCIe SSD and an upgraded display that matches Ultrafine 5K, but they didn't. There are a few new things that could go into the iMac with a March launch:In my mind it's the best reason for the delay in an updated iMac.
There are two Vega upcoming. The Vega being touted is the big one (Vega 10), while the small Vega (Vega 11) is supposed to be more or less Polaris 10 but with HBM memory, the new architecture and thus improved power efficiency.Very unlikely that the iMac will have Vega. It's almost sure, instead, that it will pack Polaris cards. Vega is far too hot for an iMac. Unless they change the thermal management in the Mac Pro, it may not be used for it, too.
There are two Vega upcoming. The Vega being touted is the big one (Vega 10), while the small Vega (Vega 11) is supposed to be more or less Polaris 10 but with HBM memory, the new architecture and thus improved power efficiency.
If the small Vega is "too hot", Polaris 10 wouldn't do any better.
Vega 11 would succeed Polaris 10 in the Radeon Instinct stack. So you can expect it to at least operate in a similar power envelope. Moreover, there is an apparent chance that it has only one stack of memory (v.s. two in Vega 10), which puts it at 256 GB/s — the same as RX 480 8GB cards.Not much is known about Vega 11, but its likely to fit performance wise between Vegas 10 at ~12 TFLOPS and Polaris 10 at 5.5. Vega 11 probably could fit in an iMac but it also probably won't be out until mid-year at best. I'm not sure Apple would wait that long when they can use either Kaby Lake or Ryzen basically now and Polaris 10 should be a sizable increase in performance from Tonga (i.e. m395x).
Vega 11 would succeed Polaris 10 in the Radeon Instinct stack. So you can expect it to at least operate in a similar power envelope. Moreover, there is an apparent chance that it has only one stack of memory (v.s. two in Vega 10), which puts it at 256 GB/s — the same as RX 480 8GB cards.
Vega is expected to launch in 1H17 though. So when it is "widely available" as DIY parts does not really matter, since apparently Apple orders through their account and AMD is usually willing to align their schedules with top-tier OEMs. Moreover, iMac BTO options are probably not a super high volume order. The main batches gonna still be Polaris 10 and 11.Assuming Vega 11 is a smaller die than Vega 10, I'm sure it could be clocked appropriately to fit in the iMac. I don't think this is the piece of technology that Apple is waiting on to release it though. It may be another 4-6 months before these chips are widely available. Polaris 10 is available now with a nice performance upgrade to the m395X. So either a revised iMac isn't coming for another 6 months or Vega 11 gets adopted in some future revision.
They would be massively undercutting the inflated top-of-the-line models, because Intel has been a monopoly in those segments for years. But the lower the spectrum you go, the less (or no) the undercutting would be. AMD wants better margin and higher ASP.
Well, they could have refreshed in late 2016 with the Polaris or Pascal GPUs, perhaps faster PCIe SSD and an upgraded display that matches Ultrafine 5K, but they didn't. There are a few new things that could go into the iMac with a March launch:
1. Intel Kaby Lake, which has already been launched.
2. AMD Ryzen, which IIRC the DIY processor-in-boxes are set to launch in early March. OEM could have got shipments already.
3. AMD Vega 10/11, which the launch time is not very clear, but should happen in 17H1.
It is worth noting that 64CU Vega 10 is aiming at the 250W space. You could ever see Vega 10 in an iMac only if AMD makes another "R9 Nano" SKU, and Apple pushes the cooling system of iMac up further from 100-125W for GPU. Otherwise, it would probably be just Vega 11 (unknown # of CUs, probably 32-36) or 36CU Polaris 10 as top of the line option in iMac.
Well, realistically speaking I'd expect more than this, unless they gonna make it thinner and consequently cut down the cooling system further.Let's be realistic. The 7700K, the direct successor to the 6700K in the 2015 iMac was released all of 5 weeks ago. That means Apple is ready to drop it in.
The successor to the 395X GPU for the iMac will 95% be something they call the 495X with an incremental performance boost. 10% or 20% perhaps. Not some wacky new release although many of us would love an Nvidia 1070 or something like that. They will also rely on the iGPU wherever they can.
Vega is expected to launch in 1H17 though. So when it is "widely available" as DIY parts does not really matter, since apparently Apple orders through their account and AMD is usually willing to align their schedules with top-tier OEMs. Moreover, iMac BTO options are probably not a super high volume order. The main batches gonna still be Polaris 10 and 11.
I am not suggesting the iMac is waiting for it either, just that it could become a BTO option for the upcoming generation (if it really gonna launch in March).
Let's be realistic. The 7700K, the direct successor to the 6700K in the 2015 iMac was released all of 5 weeks ago. That means Apple is ready to drop it in.
The successor to the 395X GPU for the iMac will 95% be something they call the 495X with an incremental performance boost. 10% or 20% perhaps. Not some wacky new release although many of us would love an Nvidia 1070 or something like that. They will also rely on the iGPU wherever they can.
The m395X is rated for ~3 TFLOPS at 125 W. The polaris 10 based WX7100 is ~5.7 TFLOPS at 130 W. Use that in the iMac and its almost a 2x increase in performance at roughly the same thermal constraints.
Whilst I'd really like to see an update in March I think too much is on the cusp of happening that I think it's more likely to be delayed until at least mid year. They've waited this long, what's another two months.
Another angle is if they finally discontinue the Mac Pro it could be even more reason to believe an iMac re-design (or iMac Pro?) is on the cards with very high end BTO options to part way placate neglected Mac Pro users.
You could very well be correct. A total lack of rumours is not convincing me of a March release, but we all could be wrong.
I wonder how many more jump ship if nothing is announced !
I wonder how many more jump ship if nothing is announced !