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Each A13 Lightning core has around 2.5x the transistors of a Skylake core. The Skylake design is also 5 years old and on a node at least a generation out of dat
by skavi 7y ago
Each A13 Lightning core has around 2.5x the transistors of a Skylake core. The Skylake design is also 5 years old and on a node at least a generation out of date. Geekbench is also a short enough test that thermals aren’t a huge concern.
- FrankBooth 7y agoWhere are you getting the per-core transistor counts from?
- skavi 7y agoIt’s a very rough estimation. Basically ((core + L2 area)/(total die area))(Total transistors on die). For A13 with unified L2, I used L2 per core. Of course, transistor density isn’t consistent across the chip, but this should be good enough for the relative comparison I’ve done.
- jdsully 7y agoYes but AMD is on a much newer node and still only achieves a very slight improvement in IPC nowhere near >2x these benchmarks imply.
- skavi 7y agoZen 2 is much more economical in its core area. Lighting cores likely have around 2x the transistors. Also, and I’m not sure how big of a deal this is, but Zen 2 is the 2nd gen of a practically new arch. Lighting has a lineage of at least 6 generations.