Intake air of 67F was heated to 114F by the case and card. Idle, the card and case is about 49dB.Ī MacBook Pro under load is about 36dB and about 31dB idle or under light load. The Razer Core with GPU stressed during benchmarking is very loud, hitting 71dB at 3 feet from the case -about the same relative volume as a car moving at 65 miles per hour, from 10 feet away. There are some pipers to be paid for the notable performance boost, however. For comparison's sake, the 2015 late 2015 iMac 5K with Radeon R8 M395X GPU cranks this test out in 32.8 seconds.Īs a raw measure of GPU performance, no other factors considered, the Geekbench 4 GPU OpenCL Compute score jumped from 59180 without external GPU to 87250 with it running, besting the late 2015 iMac 5k. An average of three runs gave us 46.6 seconds without GPU, and 26.8 seconds with external GPU. We also ran the Final Cut Pro X 'BruceX' benchmark both with and without external GPU. With the external GPU, average frame rates rose to 81 frames per second, never dropping below 48 frames per second. Using the MacBook Pro without external GPU, 'Tomb Raider' delivered average frame rates of 55 frames per second at default resolution of 1650x1050, dropping to 31.4 at a minimum. The test external GPU is the Nvidia GTX 980 with 4GB of GDDR5 RAM in the Razer Core external Thunderbolt 3 enclosure. Our test system is a MacBook Pro 15-inch model, with 2.9 gigahertz quad-core processor, 512GB SSD, and the Radeon Pro 460 GPU. Triple the teraflops doesn't correspond equally to triple the performance, however. The new Nvidia 1080 in Windows 10 delivers around 9 teraflops, with the GTX 1070 pushing 6.5 teraflops.įor comparison, the Radeon Pro 460 in the high-end build-to-order 15-inch MacBook Pro manages 1.6 teraflops, and the custom-build Mac Pro with dual AMD FirePro D700 delivers 3.5 teraflops, per GPU. With almost no fiddling or configuration, AppleInsider testing on a Razer Core and Nvidia GTX 980 in macOS managed 4.5 teraflops, with the two-year old Nvidia 770 pulling down 3.1 teraflops. Also, the macOS implementation doesn't feed the video back to the MacBook Pro's screen, so an external monitor is mandatory. However, the entire external GPU assembly doesn't work at all in macOS unless you start modifying the operating system itself.
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