Mac mini M4 or M4 Pro: what the Pro chip buys for $925 more

The short answer

For most desk work, buy the base M4. Single-core speed — the thing that decides whether an app feels fast — differs by 1.7% between the two chips, and both minis drive up to three displays. Nothing about the Pro chip makes ordinary work feel quicker.

The M4 Pro earns its premium on two axes. It is 42.2% faster across all cores in Geekbench 7 chart averages, which shows up in long video exports and long builds, and it has 273GB/s of memory bandwidth against the M4’s 120GB/s, which is why the same 7B model generated 49.64 tokens a second on an M4 Pro against 24.11 on an M4 in community llama.cpp runs.

Then there is the price check almost nobody does. On Sept. 15 the median asking price for a used M4 Pro mini was $1,745.36 across 118 listings. Apple’s Aug. 25 list price for the new M5 Pro mini was $1,699, with a Sept. 22 announced ship date and a new-machine warranty. In the observed period after Apple’s Aug. 25 announcement, matched used M4 Pro offers fell 11.33% against 5.71% for used M4 offers — a historical panel, not an October price forecast.

Be precise about what that median does and does not prove. It mixes configurations, so it includes machines with upgraded memory and storage, and it is an asking price rather than a sale. It does not mean every used M4 Pro costs more than a new M5 Pro; the lowest qualified M4 Pro ask in the same panel was $1,149. It does mean you should read Apple’s price for the new machine before accepting a used Pro ask.

And the cheapest answer first: if you already own an M2 Pro or newer Mac mini, keep it. Moving from an M2 Pro to a base M4 buys 12.5% more multi-core and 36.4% more single-core in the same Geekbench 7 chart averages, but costs you bandwidth, since the M2 Pro’s 200GB/s beats the M4’s 120GB/s. That is a sideways move for money.

The decision, in four questions

Answer them in order. The free or cheaper branch comes first every time.

Every figure in that diagram appears in the text below, so nothing lives only in the picture.

What the Pro chip actually buys

One row per real difference. Every row names its source and the date it was recorded.

What differs	M4	M4 Pro	The margin	Source and date
Multi-core CPU	15,349	21,830	+42.2%	Geekbench 7 chart averages recorded Aug. 22, 2026, in our points-per-dollar table; chart averages, not our tests
Single-core CPU	3,276	3,332	+1.7%	Same chart averages, Aug. 22, 2026
Memory bandwidth	120GB/s	273GB/s	+127.5%	Apple’s specifications, carried in our speeds by chip table, rechecked Sept. 15, 2026
Token generation, LLaMA 7B Q4_0	24.11 t/s	49.64 t/s	2.06x	Community llama.cpp runs, rechecked Sept. 15, 2026; single runs, not our tests
Prompt processing, PP512	221.29 t/s	364.06 t/s	+64.5%	Same llama.cpp runs, Sept. 15, 2026
Rear ports	3 Thunderbolt 4, HDMI	3 Thunderbolt 5, HDMI	—	Apple’s M4 and M4 Pro specifications, checked Sept. 15, 2026
Memory ceiling	16GB base, to 32GB	24GB base, to 64GB	2x	Apple’s specifications, checked Sept. 15, 2026

On the multi-core row. A 42.2% lead across all cores is the Pro chip’s real product. It shows up where a job saturates every core for minutes at a time: video exports, long compiles, batch image work. It does not show up in a browser, a mail client or a text editor.

On the bandwidth rows. Generation speed on a local model tracks memory bandwidth more closely than core count, which is why 273GB/s against 120GB/s produced just over twice the tokens a second on the same 7B model. Those are single community runs of one model, not a distribution, and your model and quantization will move the number.

On the memory ceiling. Apple silicon memory is fixed when the machine is built, so a used mini has whatever was ordered and cannot be expanded later. The ceiling matters only if you can find the configuration you need: 32GB is the most an M4 mini can hold, 64GB the most an M4 Pro can. Apple charged $400 to take an M4 Pro from 24GB to 48GB and $600 to take it to 64GB, or $16.67 and $15.00 per gigabyte; on the new M6 and M5 Pro, every memory upgrade costs $25 per gigabyte.

On Thunderbolt 5. Apple lists Thunderbolt 5 on the M4 Pro and Thunderbolt 4 on the M4. That is worth something only if you attach storage or a dock built for it. We do not quote transfer figures we have not verified.

What the premium does not buy

More screens. Apple lists up to three displays on both. The M4 supports two up to 6K at 60Hz over Thunderbolt plus a third up to 5K at 60Hz over Thunderbolt or 4K at 60Hz over HDMI; the M4 Pro supports three, each up to 6K at 60Hz, over Thunderbolt or HDMI. So the Pro buys resolution on the third screen, not a third screen. If you want three ordinary 4K monitors, the base M4 does that. Our desk setup guide lists every model’s combinations.

USB-A ports. Neither 2024 mini has any. Both need an adapter or a hub for a wired USB-A keyboard, mouse or receiver, and the port table by model shows what each one needs. Paying for the Pro does not get your old keyboard back.

A faster-feeling desktop. At 1.7% apart on single-core, the two chips open apps, scroll and switch windows at the same speed. If your complaint is that the machine feels sluggish rather than that a render takes 40 minutes, the Pro chip is not the fix, and neither is any other chip on this page.

The price check

All used figures below are median in-stock asking prices, not completed sales.

Machine	Median ask	n	Sources	Observed range	Date
Mac mini M4, mixed configurations	$820.00	445	9	$573-$2,299	Sept. 15, 2026
Mac mini M4 Pro, mixed configurations	$1,745.36	118	7	$1,149-$5,349	Sept. 15, 2026
Mac mini M4, 16GB/256GB	$749.00	134	7	Floor $625	Sept. 2, 2026
Mac mini M4, 16GB/512GB	$958.87	48	7	$759-$1,399	Sept. 2, 2026

The gap between the two current medians is $925.36. That is the number to hold against the table above.

The exact-configuration asymmetry matters. We have dated panels for specific M4 configurations — $749 for 16GB/256GB and $958.87 for 16GB/512GB — and we have none for any specific M4 Pro configuration. So the only Pro figure we can publish mixes base machines with upgraded ones, and a $1,745.36 median partly reflects memory and storage somebody else paid for. On the Pro side you have to read the individual listing’s memory and storage rather than lean on a market figure. Where a given M4 ask falls is easier: our price ladder places it.

The two tiers are falling at different rates. Comparing every offer URL and condition observed on both sides of Apple’s Aug. 25 announcement through Sept. 15, used M4 minis fell 5.71% across 69 matched offers, with a median change of -$50 and 44 lower, 18 unchanged and seven higher. Used M4 Pro minis fell 11.33% across 19 matched offers, with a median change of -$200 and 18 of the 19 lower and none higher. Nineteen offers is a thin panel, and a small panel moves more easily than a large one, but the direction is one-sided.

Against the new machines. Apple lists the M5 Pro mini at $1,699, observed Aug. 25, and the M6 mini at $899 for 16GB/256GB and $1,099 for 16GB/512GB, observed Sept. 2. Both ship Sept. 22. That puts the used M4 Pro median $46.36 above the new M5 Pro’s list price, and the used M4 median $79 below the new M6’s entry price. No independent benchmark of either new chip exists yet, so a buyer choosing new is paying for a warranty, a return window and Apple’s own labeled claims rather than for measured performance.

What the used market pays per point. Dividing the Geekbench 7 multi-core chart averages by the Sept. 15 mixed medians gives 18.7 points per dollar for the M4 and 12.5 for the M4 Pro. That is our arithmetic on two separately sourced numbers, not an observation, and the Pro’s mixed median is inflated by upgraded machines. It still matches the longer pattern: the base minis have always been the points-per-dollar winners.

Where to buy, cheapest route first

Spend $0. If you own an M2 Pro or newer mini, the honest answer is to keep it. If the machine is only short of storage, adding an external SSD is usually cheaper than buying up a tier, and nothing on this page changes that.

Our own listing pages. Live M4 mini offers and live M4 Pro mini offers are Hard Bargains pages built from the same tracker as the medians above. They earn us nothing.

Other stores. Apple certified refurbished carries a one-year Apple warranty and changes stock between visits. Swappa shows a seller’s 12-month limited warranty on the listings that have one. PayMore has a 30-day limited warranty and stores where you can inspect a machine first. eBay has the Money Back Guarantee but no grading, so vet the seller. For a new M5 Pro or M6, Apple’s own store and authorized resellers such as B&H sell them. Our channel guide compares what each one protects, and the used Mac buying checklist covers the inspection.

Search for each configuration:

Base tier. If the answers above pointed at the M4, find M4 Mac minis on Amazon. These search results may include different configurations: confirm the chip, memory, storage and condition on the listing itself, and read its price there. The $820 and $749 medians above are not Amazon offers.

Pro tier. Before paying a used M4 Pro ask, check today’s obtainable M5 Pro price and exact configuration; Apple’s Aug. 25 list was $1,699, and the historical used Pro median was $1,745.36. If the used route still wins for the specific configuration in front of you, find M4 Pro Mac minis on Amazon. These are search results; Apple’s $1,699 list price is a manufacturer price, not an Amazon offer. Confirm memory and storage on the listing; on the Pro side we have no exact-configuration median to check it against.

When these numbers change

The M5 Pro and M6 ship Sept. 22. Two things should move: the used M4 and M4 Pro medians, which have already fallen 5.71% and 11.33% since the announcement, and the comparison itself, once independent benchmarks of the new chips exist. Both chip medians and the matched-offer panel come from our daily tracker and are rerun after the ship date. Until then, the figures on this page carry the dates above.

Still choosing between generations rather than tiers? Our M2 Pro, M4 and M6 comparison covers the $950 band, and the budget map places every Mac desktop tier against the new machine Apple sells at the same price.