Power8 can't run IBM i 7.5. That makes this a hardware bill

IBM i 7.4 loses standard support on September 30, 2026. That is 16 days from now. If you are running it on Power8, the advice everybody is giving you, upgrade the operating system, is not available to you. IBM i 7.5 does not run on Power8 and never will.

That turns a software deadline into a capital purchase with a lead time attached. Here is what the decision actually looks like, including a hardware number that only became public this morning.

Power8 caps at IBM i 7.4. Power9 caps at 7.5

IBM publishes the constraint plainly on its own upgrade planning pages. IBM i 7.5 “is not supported on any servers with IBM Power8 and earlier processor technology.” IBM i 7.6 “is not supported on any servers with IBM Power9 and earlier processor technology,” and needs Power10 at minimum firmware level FW1060, or Power11.

Read those two sentences together and the whole board is visible. Power8 caps at 7.4. Power9 caps at 7.5. Only Power10 and Power11 reach 7.6.

So for most shops, September 30 is a decision about which release to move to. For a Power8 shop, it is a decision about which server to buy. No amount of PTF work changes that, and nobody selling you an assessment will lead with it.

Check your machine type before you believe any of this

Do this first, because it is the one step that can change your answer, and it takes five minutes.

Power8 did not die all at once. IBM’s own Power8 end of service announcement lists three waves: March 31, 2024 for the S822 and S824 family, May 31, 2024 for the S814, and October 31, 2024 for the E870, E880, E870C, E880C and E850C.

Two models are missing from that page. The E850 (8408-E8E) went out roughly a year before the E850C, in October 2023. The S812 (8284-21A) was the last Power8 standing and ran to July 2025. Neither appears on IBM’s summary, which is exactly the kind of gap that produces a confident wrong answer in a planning meeting.

Get the real value rather than the badge on the bezel. DSPSYSVAL QMODEL gives you the model, DSPSYSVAL QSRLNBR gives you the serial, and the machine type and model string together is what IBM’s lifecycle database is keyed on. Record the full string, for example 8286-42A, for every frame you own, then check each one. A marketing name is not enough. This matters even more on Power9, where the 2018 machine types and the 2020 refresh models are badged identically on the front and sit in completely different support positions.

What the IBM i 7.4 Service Extension covers on a Power8 box

You can buy your way past September 30 on the software side. We covered what the IBM i 7.4 Service Extension costs and what it stops covering when the multipliers were the story: 1.5 times base Software Maintenance in year one, climbing to 2.5 times by year three, with a long list of licensed programs dropping to usage and known defect only.

On a Power8 box, that purchase has a problem the pricing table does not show.

IBM’s own Power8 page, describing what a hardware maintenance extension gets you past end of service, says it plainly: “constraints on parts availability, absence of preventive service, no support for newly reported or known defects and the absence of new machine code updates or patches, including those addressing security concerns.”

Your Power8 machine stopped being eligible for firmware and machine code security patches somewhere between October 2023 and July 2025, depending on the model. It has been in that state for a year or more already. Buying the IBM i 7.4 Service Extension adds operating system defect coverage on top of a platform whose firmware was frozen before the contract started.

That is not worthless. It is narrower than it looks, and it is worth knowing before a security questionnaire asks you to describe your patching posture. You will be paying an escalating surcharge for the half of the exposure you do not have, while the half you do have is not purchasable at any price.

It also does not release you from patch windows. The Service Extension document states that an upgrade to the most recent cumulative PTF level may be required for problem resolution, which means you still schedule the IPLs and still absorb whatever the month’s PTF batch breaks.

Why a used Power9 is not the cheap answer

The tempting move is a second-hand Power9. It clears the 7.5 ceiling, it is cheap, and it looks like it buys three or four years.

It buys one release. IBM i 7.6 needs Power10 or Power11, so the Power9 step lands you at 7.5 and schedules a second hardware refresh behind it. Worse, the 2018 Power9 scale-out machine types, 9009-41A, 9009-22A, 9009-42A, 9223-22H, 9223-42H and 9008-22L, left IBM standard support on January 31, 2026. Buying one of those to escape an unsupported position puts you in a different unsupported position.

There is a defensible version of this. If you need eighteen months to land an application migration properly and you write the exit date into the purchase, a Power9 refresh model is a real bridge. What it must not be is the answer to “what is the cheapest thing we can do in September.”

What a Power S1112 actually costs

Vendor pages on this topic all end the same way, with a contact form. Here are actual numbers.

IT Jungle published Power S1112 pricing on September 14, 2026, sixteen days before the deadline. An entry four-core S1112 rack configuration runs $41,950 with 64 GB of memory and 1.6 TB of flash. The S1112 shipped in July, and we covered the Technology Refresh it arrived with at the time.

Two details decide whether that number works for you.

The S1112 is the only Power11 machine in the P05 IBM i software tier. Its ten-core version sits in P10. Software tier drives IBM i licensing and Software Maintenance cost, so the jump from four cores to ten is not a hardware line item, it is a bracket change that follows you every year.

IBM i on the S1112 caps at four cores and 64 GB of memory for core business applications. The box scales to 512 GB across four DDR5 slots, but the headroom above that cap is available to AIX and Linux partitions, not to IBM i. If your workload genuinely needs more than four IBM i cores, this is not your machine and the price is not your price.

The cheaper floor is still the Power10 S1012 (9028-21B), which IBM cut to a $4,400 base with a $3,299 four-core processor feature in August 2025. That base figure is a chassis, not a working system, so treat it as the start of a quote rather than a total. The S1012 is also the only Power10 model still orderable after the July 2026 withdrawals.

The trap: new hardware does not fix the date

This is the part that catches people, and it is worth being blunt about.

IBM i 7.4 runs on the newest Power iron. IBM’s Platform Support Summary shows 7.4 supported on the S1112 with PTF MJ08663, and on the Power11 E1180, S1124 and S1122 at Technology Refresh 12.

So you can take delivery of a $41,950 Power11 server on September 29, restore your 7.4 environment onto it, IPL, and be running an out-of-standard-support operating system on October 1 exactly as you were the week before. You will have solved the hardware problem, which is real, and changed nothing about the deadline you were reacting to.

The hardware purchase and the operating system upgrade are two separate projects. Only the second one moves your support status. Doing them together on new hardware is the right outcome and it is a bigger piece of work than either one alone, because the application testing that a release jump demands does not get smaller for happening on a new box.

Nobody completes both in sixteen days. Accepting that early is what makes the next two weeks useful instead of frantic.

What to actually do before September 30

Inventory machine types. Full type-model strings for every frame, checked against IBM’s lifecycle database individually. This is the step that tells you whether you have a problem at all.
Confirm your SWMA is current. Base Software Maintenance is a prerequisite for Service Extension. If you let it lapse to save money, you cannot buy the extension at any price, and that door closes quietly.
Get a quote on record now. Not to sign. So that when someone asks in November what this costs, a real number exists with a date on it rather than a guess. Quote the S1112 and the S1012 configurations side by side and note the software tier on each.
Decide which unsupported state you are choosing, and write it down. Extension on frozen hardware, unsupported hardware with supported software after a refresh, or a dated bridge with a migration behind it. All three are defensible. Drifting into one by accident is not.

Bottom line

If you are on Power8 running IBM i 7.4, September 30 is not a patch window. The release you are on is the highest your hardware will accept, and the fix is a purchase order.

The Service Extension is still worth buying if you need it, as a deliberate bridge with an exit date, as long as you understand it covers your operating system and not the firmware underneath it. The hardware answer starts around $41,950 for an entry Power11 with real constraints on cores and memory, or lower on a Power10 S1012 if your workload fits. What none of it does is make the deadline. Roughly a third of shops in this year’s IBM i Marketplace Survey are still on Power9 or older, and the survey does not break out how many of those are Power8, which tells you how little visibility there is on exactly this question.

Pick your unsupported state on purpose, put a date on leaving it, and get the quote while the person who signs it still thinks there is time.

Running the platform through a transition like this with a team of two or three is a different problem from running it with a department. The IBM i AI Field Guide is built for the version of this where nobody has spare capacity.

Frequently Asked Questions

Can Power8 run IBM i 7.5?

No. IBM’s own upgrade planning page states that IBM i 7.5 is not supported on any servers with IBM Power8 and earlier processor technology. Power8 caps at IBM i 7.4, which is exactly the release leaving standard support on September 30, 2026. There is no software upgrade that solves this on Power8 hardware.

Does buying new hardware fix the September 30 deadline?

Not on its own. IBM i 7.4 runs on current Power11 iron, so you can install a new server and still be on an out-of-standard-support release the next morning. The hardware purchase and the operating system upgrade are two separate projects, and only the second one changes your support status.

What does an entry Power11 server cost for IBM i?

IT Jungle reported on September 14, 2026 that an entry four-core Power S1112 rack configuration runs $41,950 with 64 GB of memory and 1.6 TB of flash. The S1112 is the only Power11 machine in the P05 IBM i software tier, and its ten-core version sits in P10, so the core count changes your licensing bracket as well as the hardware price.

Should I buy a used Power9 instead?

Only as a dated bridge, never as the destination. Power9 caps at IBM i 7.5, and IBM i 7.6 requires Power10 with firmware FW1060 or later, or Power11. A Power9 buys you one release and a second refresh project in a few years, and the 2018 Power9 scale-out machine types left standard support on January 31, 2026.

What happens on October 1 if I do nothing?

Your system IPLs normally and nothing expires. What ends is IBM’s obligation to fix new defects under standard terms. IBM i 7.4 moves into paid Service Extension, which runs through September 30, 2029, and the surcharge starts at 1.5 times your base Software Maintenance and climbs every year.