iMac Pro shootout: 8-core vs. 10-core

“With the help of some remote mad scientists, we were able to collect more 10-core iMac Pro CPU intensive benchmarks to compare with our 8-core iMac Pro — both with the same Pro Vega 64 GPU,” Rob Art Morgan writes for Bare Feats.

“The advantage of the 10-core iMac Pro ranged from 3% to 24%,” Morgan reports. “Equally configured, the cost premium of the 10-core varies from 11% to 14%.”

Morgan reports, “Compared to the fastest 2017 iMac 5K, the 8-core iMac Pro was 23% to 79% faster.”

Systems benchmarked:

• iMac Pro 10-core: 2017 iMac Pro 3.0GHz 10-Core Xeon W-2150B CPU, 64GB of 2666MHz DDR4 ECC SDRAM, AMD Radeon Pro Vega 64 (16GB) GPU
• iMac Pro 8-core: 2017 iMac Pro 3.2GHz 8-Core Xeon W-2140B CPU, 32GB of 2666MHz DDR4 ECC SDRAM, AMD Radeon Pro Vega 64 (16GB) GPU
• iMac 5K 4-core: 2017 iMac 5K 4.2GHz Quad Core i7 (7700K), 64GB of 2400MHz DDR4 SO-DIMM, AMD Radeon Pro 580 (8GB) GPU

Apple's all new iMac Pro starts at $4999
Apple’s all new iMac Pro starts at $4999


Apple's all new iMac Pro with rear case removed
Apple’s all new iMac Pro with rear case removed

See all of the benchmark results in the full article here.

MacDailyNews Take: If you’re in the market for such a beast, you likely know exactly which apps you need and how they’ll perform on machines with varied cores. Have fun supercomputing, iMac Pro users!

iMore reviews Apple’s new iMac Pro: Beauty of a beast – March 1, 2018
Ars Technica reviews Apple’s iMac Pro: It’s MUCH faster – February 18, 2018
Apple’s powerful iMac Pro is ready for the enterprise – February 16, 2018
Apple’s powerful new iMac Pro is actually cheaper than the original Mac – February 7, 2018
Aerospace engineer Dr. Craig Hunter reviews Apple’s 18-core iMac Pro: A bargain at $11,199 – February 3, 2018
Apple begins shipping 18-core iMac Pro units to customers – January 31, 2018
Macworld reviews Apple’s new iMac Pro: ‘Mac Pro power in the shape of an iMac’ – January 19, 2018
Apple’s iMac Pro has a Thunderbolt 3 storage surprise for you – January 19, 2018
What if Apple’s iMac Pro had TWO Vega GPUs? – January 16, 2018
Benchmarks: 8-core and 10-core iMac Pros running pro apps – January 11, 2018
iMac Pro PCIe-based flash storage: How fast versus other Macs? – January 5, 2018
Benchmark shootout: iMac Pro with Pro Vega 56 GPU versus optional Pro Vega 64 – January 4, 2018
Apple’s low-end 8-core iMac Pro benchmarked running pro apps – December 29, 2017
Low End iMac Pro versus two Mac Pros and one iMac 5K – December 27, 2017
Extrapolating iMac Pro GPU performance using RX Vega 64 – December 14, 2017
Apple’s monstrously potent iMac Pro is for these professional computer users – December 14, 2017
How pros are already using Apple’s powerful iMac Pro – December 14, 2017
Apple’s iMac Pro, the most powerful Mac ever made, is now available starting at $4,999 – December 14, 2017
Apple’s monstrously potent iMac Pro is for these professional computer users – December 14, 2017


  1. So the iMac Pro 8-core was configured with 32GB RAM while the other two iMacs were confifigured with 64GB RAM. Did Bare Feats not realize this would adversely affect the test results for the iMac Pro 8-core?

    1. It doesn’t really, it depends on the applications you’re using. Premiere will eat up all available RAM, so in that instance it will effect performance; but given that the 8 core system can’t feed 64GB anynmore efficiently than 32GB, it really isn’t a major factor. If you have an 18 core system, then you’d start to see a separation based on available RAM because it can adquetly address 128GB. For example, our older 12 core Mac Pro’s could address 96GB very well, but 128GB didn’t give hem any type of advantage when it came to transcoding or anything like that. The new iMac Pro’s we’ve just purchased (which are all 18 core systems, except two 10 core systems) can address 128GB and use it all to great efficiency. The 10 core seems to be most effective with 64GB of RAM, and that’s what they’re configured with. Basically, the 18 core (36 thread) system is effectively using 3.5GB of RAM per thread when it’s being fully utilized. The 10 core (20 thread) system is also using around 3.3GB/thread when it’s being fully utilized. So efficiency wise, they’re both about the same. It really depends on your workload and what you need, if you need 18 cores (36 threads) and 128GB of RAM? You’ll know it.

  2. So base don that information – Which model you recommend for Photoshop and light home movies 4k video editing on FCPX.

    Option 1: iMac Pro 3.0GHz 10-core, 32GB, 2TB SSD, Radeon Pro Vega 56
    Option 2: iMac Pro 3.2GHz 8-core, 64GB, 2TB SSD, Radeon Pro Vega 56

    Thank you

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