Chances are this is the latest version of the iMac as we know it, with its incomparable all-in-one design one and its Intel processors. These machines might get a final CPU update before they switch to Apple's silicon. But whatever the case, there's no doubt that new iMacs Apple will replace them.

< p class = "p1 "> But this latest release will not be quiet. The 27-inch iMac 2020, the most powerful of the new models, is distinguished by a very fast CPU, SSD storage and new graphics capabilities.This iMac will fully meet the speed needs of those working with software capable of pullingmulti-core processing (video editing, graphics software, databases, etc.). But that's not all: while the manufacturer has prioritized speed, Apple also optionally allows the iMac to be wrapped in a nano-textured glass panel to reduce glare. The model used for this test was specially configured by our colleagues. It takes advantage of optional upgrades to the processor, graphics card, memory, storage and nano-textured display.

Intel 10 chip e Gen, 128 GB of RAM max, and Radeon Pro 5000 XT

The 27-inch iMac 2020 integrates 10 e generation, replacing the 9th Gen processors introduced in 2019. The test unit is equipped with a 3.6 GHz 10-core Core i9 processor with Turbo Boost up to 5.0 GHz. Thisoptional choice costs € 505, in addition to the € 2,599 of the high-end standard configuration. The CPUs of this entire generation of 27-inch iMacs now offer Hyper-Threading. The latter allows each processing core to run two threads simultaneously, which should improve processor performance. Previously, only the 27-inch iMac with a 3.6 GHz 8-core Core i9 processor from 9 e Gen was able to handle Hyper-Threading.

To get an idea of ​​the speed of the iMac, our colleagues performed several benchmarks, starting with the Geekbench 5 They then compared their results with those of benchmarks from other Macs that Geekbench has recorded on its website.

Geekbench 5 single- core

 27-inch iMac review: Latest Intel iMac leaves a lasting impression (Part 1)

The resultsare scores. The higher scores / longer bars correspond to the best results. Click to enlarge. (Credit: IDG)

In single-core Geekbench tests, the new iMac is 10% faster than the custom configuration of the previous version with 8-core Core i9 at 3.6 GHz tested by our colleagues. But the 19% performance boost over the current entry-level iMac Pro with a Xeon W, 10-core at 3.0GHz is a bit more impressive, as is the gain of 26. % compared to the Xeon W, 8 cores at 3.5 GHz of the base Mac Pro.

Geekbench 5 multi-core

Results are scores. Higher scores / longer bars are better results. Click to enlarge. (Credit: IDG)

In Geekbench multi-core tests, our colleagues found that the new iMac gained 18% in performance compared tot to the previous version, and 20% compared to the base Mac Pro. The new iMac and iMac Pro are getting closer in performance, but the iMac is 6% faster.

Apple still only offers 8GB of RAM as standard, but the maximum amount of memory supported has been increased from 64GB to 128GB. However, Apple's prices for increasing RAM are incredibly high. For example, the upgrade to 128 GB costs € 3,250. Fortunately, third-party vendors are offering RAM at more affordable prices, especially since on the 27-inch iMac, the compartment is easily accessible, allowing anyone to add their own. RAM. At the time of writing, Crucial was selling a 64GB memory kit (two 32GB DDR4 2666MHz SODIMMs) for $ 350 (RRP). This means that for around 700 €, you can fill the four memory slots of the iMac and have 128 GB. It is much lessexpensive than the 3250 € requested by Apple, even if we lose in passing the 8 GB of RAM supplied as standard.

The 27-inch iMac has four memory slots easily accessible through a door on the back of the computer. (Credit: IDG)

On the other hand, user upgrading of the SSD supplied as standard with the 27 inch iMac is not possible because it is integrated into the iMac motherboard. Apple used to offer Fusion Drives. Faster than a simple stand-alone hard drive, this combination of SSDs with hard drives allowed for a trade-off on speed while offering greater capacity. Apple decided to prioritize speed and ditch Fusion Drives.

SSDs are more expensive than hard drives and than Fusion Drives. Also, for maintain itself at the level of standard configuration prices usually charged by Apple - 2 0€ 99 / € 2,299 / € 2,599 - the manufacturer has reduced the amount of storage compared to previous versions. That means you have to pay for more storage space, and if when possible. For example, the $ 2,099 iMac comes with a 256GB SSD, but it doesn't offer any upgrade options. The € 2,299 and € 2,599 iMacs come with 512GB SSDs, but you can go for a 1TB SSD for € 250 more, or a 2TB SSD for € 750 more. The € 2,599 iMac also allows the machine to be fitted with an optional 4TB (for € 1,500) and 8TB (for € 3,000) SSD. But it is still possible to connect an external drive through the Thunderbolt 3 / USB-C or USB-A ports.

The graphics card also brings significant speed gains. Apple now uses graphics from the Radeon Pro 5000 XT series, which succeeds the Radeon Pro 500X series (on the previous version of iMac at € 2,299 and € 2,599, it was possible to choosean optional Radeon Pro Vega 20 or 48 card). The test unit from our colleagues was equipped with a 16 GB Radeon Pro 5700 XT card. This option, offered only for the € 2599 model, costs € 625.

All connection ports are on the back of the iMac 27 inches. From left to right: one headphone jack, one SDXC card slot, four USB 3 ports, two Thunderbolt 3 / USB-C ports and one Gigabit Ethernet port. (Credit: IDG)

Other updates make it possible to speed up the new iMac. For example, Apple now offers as an option (125 €) to replace the gigabit Ethernet integrated by 10 Gigabit Ethernet. The SDXC card slot on the back now uses the UHS-II bus interface, which has faster read / write speeds than the previous UHS-I implementation.

An alternative to glossy screen glass

By default, the iMac 2020 always comes with a shiny glass pane, which Apple calls" standard glass. The main reason Apple uses shiny glass is that the contrast is better than on conventional matte screens. But some users do not support these screens, more because of glare than reflections. Glare is more difficult to overcome, especially when the possibilities of placement in a workspace are limited Especially at certain times of the day when the computer is with its back to a window In an earlier version of the iMac, the front glass was held in place by magnets and could be removed with the appropriate tools. Some manufacturers have tried to offer products that can reduce glare, but this option changed the design of the iMac a lot.

With this 27-inch iMac, Apple offers now an optional nano-textured glass, identique to what Apple offers for its Pro XDR display. It is a matte, uncoated finish with "nano-structures etched into the glass. According to Apple, this structure helps maintain image quality and contrast much better than with a matte coating. For their test machine, our colleagues opted for this nano-textured glass. This non-shiny iMac is almost odd next to all the other iMacs, not to mention the old shiny screens from Apple, those from MacBooks, and even those from the iPhone and iPad. When the iMac is turned off, it looks like frosted glass, and it almost completely loses its mirror effect. But when it's on, there's no glare, and while the glare doesn't go away completely, it's a lot easier to manage. As for the contrast, our colleagues say they had trouble noticing a difference compared to a glossy screen. Overall, they liked the nano-glass screen and they got holevé that it was more restful for the eyes.

On the left, the standard Apple glass, with its shiny glass that we all know. On the right, the new nano-textured glass screen whose matte appearance reduces glare and glare. (Credit: IDG)

No doubt that nano-textured glass has advantages. But, it will still cost € 625 more. But it seems worth it, to reduce eye fatigue or if you works in an area where display quality and comfort are essential. Some have said that the price of nano-textured glass could drop over time, but this is not the opinion of our colleagues at Macworld. 'is really the work tool you have been waiting for, so don't hesitate. For more personal or family use, or in the case of a machine shared between several users, it may be less essential. .

Anyway, behind the glass standard or nano-structure, Apple installed the same 5K Retina display with a resolution of 5120x2880 pixels, with support for the P3 color gamut and a brightness of 500 nits. This display has always been and remains a top-notch display, but it still benefits from one improvement: True Tone support. The iMac uses sensors to automatically adjust the white balance of the screen based on the ambient light in the workspace. And, if you don't want it, you can always turn it off in the "Monitors" section of "System Preferences.