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Apple iMac 21-inch 4K review

£1,299.00 Typical price

Test scoreShow Context

Key features
  • AIO
  • MacOS
Expert review

The Apple iMac 4K is a high-end all-in-one PC that pairs impressive specifications with an attractive design. Inside is a quad-core Intel i3-8100 processor, 8GB of Ram, dedicated AMD Radeon Pro 555X graphics and a 1TB hybrid drive. But how does it measure up in our tough battery of tests? Read the full review to find out.

What's included:
  • Pros and cons
  • What is it?
  • What’s the performance like?
  • What’s it like to use?
  • How are the screen and sound?
  • What other specs are available?
  • Should I buy it?
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First reviewed by Which?

September 2020

Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we test desktop PCs>
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Best Buys and Don't Buys
We have tested 15 desktop PCs and found that there are 0 Don't Buys and 7 Best Buys.
Range of Desktop PC scores
  1. 50%
    Lowest score
  2. 73%
    Average score
  3. 89%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to desktop PCs we've tested
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First month only £5, then £9.99 per month, cancel any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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