# M1 vs M3 vs M4 iMac Buyer’s Guide: 25+ Upgrades Compared

**URL:** <https://intoguide.com/t/m1-vs-m3-vs-m4-imac-buyer-s-guide-25-upgrades-compared/1328>\
**Category:** iOS\
**Created:** [April 25, 2026, 2:16pm UTC](https://intoguide.com/t/m1-vs-m3-vs-m4-imac-buyer-s-guide-25-upgrades-compared/1328 "2026-04-25T14:16:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wasabi](https://yyz1.discourse-cdn.com/flex003/user_avatar/intoguide.com/wasabi/32/646_2.png) [@wasabi](https://intoguide.com/u/wasabi)\
**Post date:** [April 25, 2026, 2:16pm UTC](https://intoguide.com/t/m1-vs-m3-vs-m4-imac-buyer-s-guide-25-upgrades-compared/1328/1 "2026-04-25T14:16:34Z")

</div>

# 🍏 Apple iMac (M1 vs M3 vs M4) — Full Generation Comparison

Apple’s iMac lineup has gone through three Apple silicon generations:

- **2021 (M1 iMac)** → First Apple Silicon iMac, major redesign

- **2023 (M3 iMac)** → Small performance + connectivity refresh

- **2024 (M4 iMac)** → Biggest upgrade in AI, memory, camera, and future features

While all three models share the same **24-inch ultra-thin design and core experience** , the internal improvements vary significantly in performance, AI capability, and long-term usability.

 ![image](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/e/eda4e6148dea6d19ac45ea0348100a3c06cb68fd.jpeg)

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# 🧠 Key Takeaway

- **M1 iMac** → Design breakthrough

- **M3 iMac** → Performance refinement

- **M4 iMac** → AI + future-ready upgrade

* * *

# 📊 Apple iMac Full Comparison Table

| Feature | iMac (2021) M1 | iMac (2023) M3 | iMac (2024) M4 |
| --- | --- | --- | --- |
| Chip | M1 | M3 | M4 |
| Chip process | 5nm (N5) | 3nm (N3) | Enhanced 3nm (N3E) |
| CPU clock speed | 3.20 GHz | 4.05 GHz | 4.30 GHz |
| Transistors | 16 billion | 25 billion | 28 billion |
| CPU cores | 8-core | 8–10 core | 8–10 core |
| GPU cores | 7–8 core | 8–10 core | 8–10 core |
| GPU architecture | Base Apple GPU | Improved efficiency + ray tracing | Improved ray tracing + mesh shading |
| Memory type | LPDDR4X | LPDDR5 | LPDDR5X |
| Memory bandwidth | 68.25 GB/s | 100 GB/s | 120 GB/s |
| Unified memory options | 8GB / 16GB | 8GB / 16GB / 24GB | 16GB / 24GB / 32GB |
| Neural Engine | 16-core (11 TOPS) | 16-core (18 TOPS) | 16-core (38 TOPS) |
| Media engine | H.264 / HEVC | ProRes + AV1 decode | ProRes + AV1 decode |
| Camera | 1080p FaceTime HD | 1080p FaceTime HD | **12MP Center Stage + Desk View** |
| Image signal processor | Standard ISP | Improved ISP | Improved ISP |
| External display support | 1 display | 1 display | **Up to 2 displays** |
| Thunderbolt ports | Up to 2 Thunderbolt/USB4 | Up to 2 Thunderbolt/USB4 | **Up to 4 Thunderbolt 4 ports** |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E | Wi-Fi 6E |
| Bluetooth | 5.0 | 5.3 | 5.3 |
| Headphone jack | Standard | High-impedance support | High-impedance support |
| Accessories | Lightning keyboard/mouse | Lightning keyboard/mouse | **USB-C keyboard/mouse** |
| Display | 24-inch Retina | 24-inch Retina | 24-inch Retina |
| Nano-texture display | No | No | **Yes (option)** |
| Color lineup | Original 7 colors | Same palette | Refreshed palette |
| Base RAM | 8GB | 8GB | **16GB (standard)** |
| Starting price | $1,299 | $1,299 | $1,299 |

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# 🔍 What Actually Changed Between Generations?

## 🟦 1. M1 iMac (2021) — The Foundation

 ![https://images.openai.com/static-rsc-4/NBlzrPYlSHDDqbZhgkvxtMYx6vygQkRwCuwUVCd26jEZkJj1IscdGVtCSXDOUY7HHS_l9q1pCpqhKARI0PB6b4FomT7uYoL1Y_ce_z2M-Qob68FTjFwVm7S1H25b5N8Zppg9iB3JFmlyBD3ol0MCgHPvhPuYEJhhxKHGKADF-XSlg9b_wKEj4jEr4TEEIhEh?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/4/463884698ea981d229c41c3140937366808f0d89.jpeg)

 ![https://images.openai.com/static-rsc-4/wIecrR_d3oyStnJlyC7n0TJsvMHYaTZyAfJsk7CSdU04pTBUX8D_Jb7zDyHd3nrPpq9rDB8paQifm8pOvxfSPCB4KhffNZavJexlTLg_P4rveDuq8cpnlvlpaxCMEZC9QYCWRKKi8YmoLRD2okikMqr8S3GBvaKrTZR_QqIEMYWJeH2KH5xUv2a_DZeiu0uy?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/0/0535c22d144f1a1db25cb011d9f8d3617f743fe5.jpeg)

 ![https://images.openai.com/static-rsc-4/gub3PFdEzkZ1PrdIeV8KHZ_Mgc6j2_8m_XCfiflKfa7kVrnSxHdoZKCvkbCZsE0ZmwWPu7X-DJSPHnTlj19F_zjwjv5NL9dm8QXt9FuM0Dgc7MrkaGiAlNIXKxWBlUxvNhPmUcBaWz6aG2qDjIoXkQ1DYvtgu57ZnFjOWDDrcpBflSpO82YqxCgb-7ZVCC7M?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/3/32d572aae6acd38cacd9430991e4a5915d0bcbfe.jpeg)

5

The M1 iMac introduced Apple Silicon to desktops with a completely new design.

### Key strengths:

- Revolutionary thin all-in-one design

- Bright 24-inch Retina display

- Strong performance vs Intel Macs

- Excellent speakers and webcam for its time

- Vibrant color options

### Limitations:

- Only 8GB base memory

- Limited external display support

- Older connectivity standards (Wi-Fi 6, Bluetooth 5.0)

👉 Best described as: **design-first generation**

* * *

## 🟨 2. M3 iMac (2023) — Refinement Stage

 ![https://images.openai.com/static-rsc-4/MWUhfU7vld_yZKwRH-v8AyDzQlkhz1itz_XrEcJaIvUJYec5Yy1mWLjHrdOSZb2T912pbkOE1lc-j6frv6hDJIrtCAp_GjiktL9tVdW3Wb_v62MzNAZlqpjdvhyPW7uCr3UZ4od8YYeVH76pftbn_VKO2baNFS2h1aPn6m7rgn_eQje9q-7IB5a9JvJjgakX?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/d/dcd5fc799a44f37b065987d6ea1f8db6a0ddef02.jpeg)

 ![https://images.openai.com/static-rsc-4/KVjPaV_5zY7Q80FOJ-EF86gefx1K7z2c46P3JFKhN6woAGfKF1Uh9wYijCuS1XlG7sWtmmZG-h_xAIHPdxiT2vZaOPE2kZkLzLxhdg5l1z4OB4H8tIz_qBE5iF0eIaBq_jXBhfwHxXD-IYfHM8btFi6cn6ZdTo9AF09BiUy_NoHjYZBA-J-Ud91H6MTO24iF?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/b/b763dda30beca3c74bc189a244eca1e9fd32ce89.jpeg)

 ![https://images.openai.com/static-rsc-4/KyK0jdj2_Jy1ABpT-5HAvX8Vxf7VErIEaWFy3B4_lWq4BWZboYNpzji8Ryp0RpwU5uSj0IZ22-pD9uwBEsd57gaq2AN3SP5AZq7j6UE8JMMAuiTk-oqNqYLIrInyHv8IiNzXp8MaVFT2Au3EcK-1zQu0zciYcAqOqpHq9K-g-49dE_Hp3EwabSMUR6VTbJdW?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/c/c26394d4bbad9b01b96162a169af633d9c8a6161.jpeg)

7

The M3 model kept the same design but improved internal performance and connectivity.

### Key upgrades over M1:

- Faster CPU and GPU performance

- Ray tracing + mesh shading support

- Wi-Fi 6E and Bluetooth 5.3

- ProRes + AV1 media support

### What didn’t change:

- Same webcam (1080p)

- Same external display limit (1)

- Same base RAM (8GB)

👉 Best described as: **incremental performance refresh**

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## 🟥 3. M4 iMac (2024) — AI + Future-Proof Generation

 ![https://images.openai.com/static-rsc-4/gLPcZiyxWnVuNF8M7c82Ru5__MY5ULVN2qZMPf49QXxhEE-FZtDcgm0cmXbS4hMzSsKhWc5tiFqOj7oYG8CGg5CIKaoO3xRhjGHLROO2lh7OzdE-BLzs2dLe1b2xM_53BZFUndmSEQY9U37IGK_t6uugovUCq3l2I4E0AfHyOiUQLP6PMGBQ1oY3r5NpfN-6?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/3/38ca359dd68c043f0281c73690d263c6d823c878.jpeg)

 ![https://images.openai.com/static-rsc-4/t9i2pmi5f9ABRdlfM5KgCJixKE4wH00-L3RPdT9RkCD2twrSsanNwSN2rfLx0xssDCizdhxSd_k4Zxgp89WoM5OCMPKTRp1iF4nWLxsWnpxV_fl8x-V18o8y3gpA6tuyJhfpED4QCrz0JuR6W4nKoiC4eXR82x9H8MuI5skXpZJi4jzgQ8kIjAuZBEcrQxXU?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/8/8cb439e1fb8210915cddd7a447f094dab286916b.jpeg)

 ![https://images.openai.com/static-rsc-4/7q_syEcQ1U0t7QpWG5tLx1LxpYPHgAMLdUlxiTM9nxe9SeGfTclVFMQP3QJwEQVWi7zXQWbDk1Z2s97h-78SaKT1i_mVTQqrd_XrpcxhviNdSQ0QroFX6IFlieWucDuz4n7TjKqVdK-lnYHU3xRO5lpfEfZSYWSn9lR6gXJ7YaXi0QEj-e9DsP4u2oj0knff?purpose=fullsize](https://canada1.discourse-cdn.com/flex003/uploads/intoguide1/original/2X/0/01d5df9f62e34a112e090594fb0e1cdef5e1c915.jpeg)

6

The M4 iMac is the most meaningful upgrade since 2021.

### Major improvements:

- **Massive Neural Engine jump (38 TOPS)**

- **16GB RAM standard (huge real-world upgrade)**

- 12MP Center Stage camera with Desk View

- USB-C accessories (no Lightning)

- Supports **2 external displays**

- Up to 4 Thunderbolt 4 ports

- Nano-texture display option

- Faster memory (LPDDR5X)

### Why it matters:

This generation is built for:

- AI features (Apple Intelligence)

- Multi-display productivity

- Longer software lifespan

👉 Best described as: **AI + productivity future-proof upgrade**

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# ⚖ Which iMac Should You Choose?

## 💰 Choose M1 iMac if:

- You want the cheapest option

- You do basic browsing, office work, media

- You find a heavily discounted unit

## ⚡ Choose M3 iMac if:

- You want balanced performance at lower cost

- You don’t need AI features

- You only use one external display

## 🚀 Choose M4 iMac if:

- You want the longest future support

- You care about AI / Apple Intelligence

- You use video calls frequently (better camera)

- You want multi-display support

- You want 16GB+ memory baseline

* * *

# 🧾 Final Summary

- **M1 iMac** → iconic redesign, now aging internally

- **M3 iMac** → modest upgrade, still solid value

- **M4 iMac** → first truly “future-ready” iMac with AI focus

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If you want next, I can make:

- 📊 iMac vs Mac mini M4 (best desktop choice)

- 📊 iMac vs MacBook Air (which one should you buy)

- 📊 “Best Apple Mac to buy in 2026” full guide