> while 80486 has reached 50 GHz only in 1991, not in 1990.
Your typo got me wondering — what would the performance of an actual 50GHz 486 look like compared to modern single-core performance?
The lack of speculative execution combined with atrocious memory latencies and next to no cache should be enough to annihilate most if not all of the advantage from the faster clock — CPU is just going to be idling waiting for data. Then there’s the amount of work you can get done per cycle, and SIMD, and…
Your typo got me wondering — what would the performance of an actual 50GHz 486 look like compared to modern single-core performance?
The lack of speculative execution combined with atrocious memory latencies and next to no cache should be enough to annihilate most if not all of the advantage from the faster clock — CPU is just going to be idling waiting for data. Then there’s the amount of work you can get done per cycle, and SIMD, and…