Note that: 8GB modules can be mixed with existing Apple Factory and/or OWC 4GB 1866MHz Modules. Click here to check out our current line-up:
OWC MEMORY MAC PRO 2013 UPGRADE
If, however, you’re on a budget, adding more memory will always provide the most significant performance bang for your dollar.ĭon’t be restricted to Apple’s limited memory upgrade options. So, for best results, sets of four modules should certainly be utilized. Here’s the data from our testing: Digiloyd Photoshop Benchmark Data It’s a small price to pay in performance to maintain flexibility.
Knowing that you can’t mix 16GB modules with 8GB or 4GB, the benefit of going with 2 x 16GB is that later on you can add another 16GB stick to go to 48GB and another to go to 64GB – all without losing your prior investment. You can go with a 4x 8GB set or a 2x 16GB set. Say that you have 12GB or 16GB now and want to go straight to 32GB. The 16GB modules deserve a bit of extra attention, as they are what are known as “Registered DIMMs” or “RDIMMs” for short and are incompatible with the standard 4GB and 8GB products, all of which can be freely intermixed. You can choose the right amount of memory for what you need to do, what you plan to do, and what best fits your budget. Where you have more memory than needed, the real-world impact of mixing and matching memory is pretty limited, topping out at a little less than 4%. Again, the biggest difference is between the two 32 GB configurations where two 16GB modules underperform vs. Now all of the differences are driven by the mix of module sizes, which set the operating mode for the memory controller dual-channel, triple-channel, or quad-channel. Taking it one more step, we ran a speed test that allowed us to stay in the memory-footprint of the smallest shipping configuration of 12GB (3x4GB).
OWC MEMORY MAC PRO 2013 FULL
That is the ideal configuration for these systems four matched memory modules, which allows full quad-channel operation. Above 20GB, the biggest percentage improvement comes in going from 32GB as two 16GB DIMMs, to the same capacity but as four 8GB DIMMs for a 3.5% improvement. You can see where increases in total memory become less significant above 16GB. But each additional gigabyte got us closer.ĭropping back a bit and using a 20,000-pixel wide 15.7GB image gives the following results: Image used is 20,000 pixels across, and 15.7GB, X-axis is in seconds. In this case, more memory always gives the most significant performance boost since there was never a time when everything fit. Image used is 40,000 pixels across, 56GB, X-axis is in seconds. We took a really large image file, in this case 40,000 pixels wide and 56GB in total size, and ran some scripted operations in Adobe Photoshop. Here is an example of a “memory hungry” situation. That being said, in the real world – as with the 2009-2012 model Mac Pros which supported up to triple-channel addressing and even with the 2006-2008 models that REQUIRED matched pairs – more memory trumps multi-channel addressing where you have an application or applications running that make use of that memory.
This allows the system to use quad-channel addressing, which is the most effective mode of operation. When using a new Mac Pro 2013, installing four matched memory modules will get you optimal performance.
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