We review the 2023 iMac, which now has an M3 chip and nothing else to distinguish it from the model it replaces.
Apple 2023 iMac All-in-One Desktop Computer with M3 chip: 8-core CPU, 8-core GPU, 24-inch Retina Display, 8GB Unified Memory, 256GB SSD Storage, Matching Accessories. Works with iPhone/iPad; Pink
Apple 2023 MacBook Pro Laptop M3 Max chip with 14‑core CPU, 30‑core GPU: 14.2-inch Liquid Retina XDR Display, 36GB Unified Memory, 1TB SSD Storage. Works with iPhone/iPad; Space Black : Electronics
iMac (M3, 2023) review: An all-in-one all-rounder, but some parts are ready for an upgrade
I tested the Apple iMac (M3, 2023) and here's my review
Apple iMac (M3, 2023) vs iMac (M1, 2021): What's the difference?
Apple iMac M3 (2023) Review: Everything You Could Want in an All-in-One - CNET
Apple iMac M3 review: - The Verge
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Apple iMac (M3, 2023) vs iMac (M1, 2021): What's the difference?
iMac M3 (2023) review: Serious power, same great design
Apple iMac 24-Inch (2023, M3) Review