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Hello Apple and Mac friends.
Does the Late 2015 iMac have a PCI-e 3.0 bus or 3.1?
Thanks in advance.
God bless, Rev. 21:4
iMac 27″, macOS 11.5
Is this the info you need?
Is this the info you need?
Hi. Yup, that info's good enough to extrapolate from, thanks. Where did you find that info (what app or website)?
Interesting, it's a PCIe 3.0 x4 (4GB/s data transfer) then, according to this:
https://www.trentonsystems.com/blog/pcie-gen4-vs-gen3-slots-speeds
I guess it can't take advantage of the fastest NVME SSD, the Western Digital Black SN850 with 7GB/s read speed (not that one can replace Macs with off the shelf M.2 NVMEs) but it can with 3.5GB/s read NVMEs like the Samsung Evo Plus and others like it.
Take care Mac friends. Until next time. Have a blessed and great weekend.
There are no PCIe slots available within an iMac.
The available PCIe (external) connection is Thunderbolt, with two Thunderbolt 2 connections (2 by 20 Gbps) available across the various iMac late 2015 models I’ve checked.
There are Thunderbolt 2 NVMe enclosures around, not that there have been many discussions of those enclosures around here, and not that I’ve tried using one with this configuration.
Alvin777 wrote:
Hi. How about for the 2017 iMac? Is it a PCIe 3.0 x4 lane bus still or PCIe 4.0 x16 lane bus (hopefully coz' 2017 is 7 years after 3.0 was launched)?
There’s no PCIe slot in any iMac.
2017-era iMac and iMac Pro models had Thunderbolt 3 for external expansion, with two Thunderbolt 3 connections on most and four connections on iMac Pro.
Typical internal storage connection was 6.0 Gbps Serial ATA (SATA), 1 - 8.0 GT/s NVMe PCIe x4.
Download the MacTracker app from the App Store and explore..
Thanks for the info (it's nice to know more about a product, the more one knows the more one loves and admires it). It's nice the 2017 iMac has PCIe 4.0 x4 lanes (why don't they use a x16 lane for the bus?)
What's the read speed then of the Apple Blade (correct me if I'm wrong Apple's NVME SSD equivalent is called Blade?) 1TB and higher TB that are factory installed in the 2017 iMacs?
Alvin777 wrote:
Thanks for the info (it's nice to know more about a product, the more one knows the more one loves and admires it). It's nice the 2017 iMac has PCIe 4.0 x4 lanes (why don't they use a x16 lane for the bus?)
There’s no PCIe bus with available slots, and x4 works fine for what was needed. x16 would be for a fairly serious (internal) I/O connection, or an (another) internal GPU. Neither of which was a target for iMac, or particularly fits in the shell.
Need lots of bits, connect to Thunderbolt external.
What's the read speed then of the Apple Blade (correct me if I'm wrong Apple's NVME SSD equivalent is called Blade?) 1TB and higher TB that are factory installed in the 2017 iMacs?
Run some web searches for imac nvme ssd or similar search targets via DuckDuckGo or such, and see what shows up. Found some fairly detailed discussions that way. OWC seems to have had some options there, too.
The 2017 iMac has this:
From the MacTracker app
No slot but evidently a buss is PCle x4. Is that what you're asking about?
Welcome to the Apple Support Communities.
No. What are you trying to accomplish?
Cheers,
Jack
Hi. What's the speed of its PCI-e?
Can you please explain what you’re trying to accomplish?
Information. I just wanted to know how fast its parts are to optimize parts I'll be buying for it, so one does not spend too much money? Thanks
Thanks for the heads up :-)
Hi. How about for the 2017 iMac? Is it a PCIe 3.0 x4 lane bus still or PCIe 4.0 x16 lane bus (hopefully coz' 2017 is 7 years after 3.0 was launched)?
Thank you in advance.
.
Does the Late 2015 iMac Have a PCI-e 3.0 Bus?
