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Old 20-06-19, 10:32 AM
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WYP WYP is offline
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Intel "Ice Lake" CPU reportedly offers 40% IPC uplift in benchmark

This data is extremely suspicious.

Read more about Intel's reported 40% IPC uplift with Ice Lake.

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Old 20-06-19, 10:40 AM
Giggyolly Giggyolly is offline
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18% IPC is all well and good, but we won't see any flagship desktop parts unless they can get their clocks up. Which seems unlikely
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Old 20-06-19, 10:49 AM
tgrech tgrech is offline
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Yeah early insider reports(From impeccably reliable sources on this topic) are that ~4.1Ghz is the fundamental architectural limit to clock speeds, this happens when you take things so wide that attempting to use higher clock speeds results in too little time between clock pulses for the combinational logic blocks to be ready in time(Have their results in the registers) for the next pulse. (It's worth noting that going wider is almost always more efficient though)

You can get around this problem with node changes specifically if those changes reduce the latency induced by logic gates(On the single digit nanoseconds scale) but they won't be able to get around this issue just from more mature silicon on the same node type. Otherwise you need to modify the arch with more aggressive pipelining(But go too aggressive and you harm efficiency & IPC).

It seems likely Intel will skip Sunny Cove for desktop entirely until Saphire Rapids(Or whatever they end up calling the successive arch) is ready(~2021), it'd probably just get shown up by 14nm comet lake. Sunny Cove is good for laptops or servers(Like 80% of their income tbf), but at best a side step for performance desktop, as the IPC gains will be negated by the clock speed hit.
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