Intel Core i5-8400 CPU Review: Page 4 of 6
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One of the goals of this review was to compare the new Intel v4 Broadwell Xeons to their predecessor v3 Haswell Xeons. This was not as easy as it should have been. My front line tool for benchmarking CPUs is Prime This means the Broadwell blade has 72 logical cores.
Prime95 cannot bench this because it can only address 64 logical cores. Intel broke Prime 95 through sheer core count. The other challenge was that the Haswell Xeons provided weren't directly comparable to the Broadwell Xeons.
They weren't the same core count or frequency, though they were the same TDP. I tried to overheat the chassis so that I could play silly buggers with thermal failure, but with only 2 blades in a chassis designed for 28 possessed of possibly the most aggressive fans in existence I did not succeed.
Fortunately, I have a lab with lots of different CPUs and the ability to do lovely things like over and underclock them. When not using AVX2, Broadwell seems to provide a 4 per cent to 5 per cent increase in performance clock for clock over Haswell. If this doesn't seem like much, that's perfectly normal. Broadwell is a die shrink of Haswell and not much really changed in terms of microarchitecture. One set of benchmarks did stand out from the rest: Some performance tests were showing 80 per cent improvement with many showing 20 to 25 per cent.
The result is faster crypto. A lot of organisations are looking at upgrading v1 Xeons to v4 Xeons and the jump in speed is actually worth it. Clock for clock, the Broadwells seem to be a little under 20 per cent faster for non-AVX workloads.
AVX workloads were considerably faster. There were a huge number of other improvements that came along with AVX2 as well. The net result is that many AVX workloads will easily more than double performance, clock for clock on Broadwell than Sandy Bridge.
Now, that is intel burn test speed gflops for bitcoin to only a few workloads that are make use of all the enhancements, but some workloads — CRC crypto, for example — show a quadrupling of clock for clock performance. Considering that Intel has more or less kept the prices steady across the lines, the value for dollar has risen significantly with each successive generation.
A lot of that value is in getting more cores for your dollar — intel burn test speed gflops for bitcoin for virtualization — but single threaded performance isn't being neglected. If you're running Haswell, there isn't a huge incentive to upgrade to Broadwell unless you do rather a lot of crypto. Minds Mastering Machines - Call for papers now open. The Register - Independent news and views for the tech community. Part of Situation Intel burn test speed gflops for bitcoin. Join our daily or weekly newsletters, subscribe to a specific section or set News alerts.
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