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Radeon Pro Vega 48 GPU Upgrade for 2019 iMac 5K



See my recommended Mac for photographers and similar higher users.

Contact Lloyd for advice on system selection and configuration, backup and fault tolerance etc.

See Apple 2019 iMac 5K: Two hits with a Big Miss and 2019 iMac 5K.

Brian B writes

Your content on the 5K iMac changes has been good. Especially the information on Thunderbolt 3 single-bus concerns, I would never have considered it otherwise. I don't think the TB3 bandwidth will be a problem for me.

When looking at your recommended Apple 2019 iMac 5K for easy-to-use configurations, I was surprised that the iMac only had a 580x.

Is That is why you recommend 580x over Vega 48, especially considering your post on LR / PS, without using eGPU? Isn't it just a good value?

MPG: The GPU upgrade to the Radeon Pro Vega 48 is $ 450. For perspective, it's about the cost of upgrading to the 8-core CPU (highly recommended), or a 64GB memory upgrade or going to a 1

TB SSD from performance-reducing and Noisy Fusion Drive. All of these upgrades should come before the GPU upgrade, but if your budget is wide open, add the top-end GPU as well.

Therefore, my recommendation is not a recommendation against Radeon Pro Vega 48 GPU Upgrade, but rather a statement such as unless the budget is unlimited go first for 8 – core CPU, SSD (2TB, 1TB minimum) and memory (64GB or more)).

Continuing under

Considering a maximum output in the 2019 iMac 5K, it's best to take a break and find out if an iMac Pro would be a better choice for your workflow. I offer advice for such decisions .

Please purchase your Macs through B&H Photo via the links on this page . B&H Photo provides the test units to MPG.


Recommended Apple 2019 iMac 5K for high-end users
BUT buy at 8 GB and upgrade memory to 128 GB

Previously, similar GPU upgrades had no noticeable gains in performance for what I do [19659016] and was generally around 20%, which could be shown on reference targets, but in the context of real work, was not meaningful. For example, would you pay $ 450 to take the time from 5 seconds to 4 seconds for an operation done 10 times a day?

Claim for speed improvements should be discounted heavily unless there is continuous use of the GPU. Nevertheless, if not nearly everything I do as a photographer in Photoshop, the GPU uses only a fraction of the time of the total operation in short cases. Although operations like Adobe Camera Raw Enhance Details (GPU Intensive) are increased by 25%, not 100 seconds saves a day (rarely) does not impress. By far, I wanted to have 128 GB of memory; My budget is not open.


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