Introduced in October 2013, the MacBook Pro (Retina, 15-inch, Late 2013) replaced the MacBook Pro (Retina, 15-inch, Early 2013). A single 3.5mm jack could be used for analog or optical audio out, or analog audio in. A 128 MB of "Crystalwell" embedded DRAM served as both a Level 4 cache for the CPU and a cache for the integrated graphics chipset. Actual usage varied with graphics load, resulting in slightly less RAM available for system use. Though reported as 1 GB, this was actually a minimum. The MacBook Pro's integrated graphics chipset used a portion of main memory as VRAM. GPU: NVIDIA GeForce GT 750M, Intel Iris Pro 5200 GraphicsĪudio Out: stereo 24 bit mini, Optical S/PDIF Level 2 Cache: 256 kB per-core (1 MB total) Level 1 Cache: 32 kB data, 32 kB instruction
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