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6366HE has a base frequency of 1.8GHz, with 2.3/3.1 turbo. For the same money you can get a six core Intel E5-2630 (2.3/2.8GHz). The benchmarks [1] say the Vi
by miahi 14y ago
6366HE has a base frequency of 1.8GHz, with 2.3/3.1 turbo.
For the same money you can get a six core Intel E5-2630 (2.3/2.8GHz).
The benchmarks [1] say the Vishera (desktop Piledriver) has about 50% of the Intel performance per core at the same frequency, so unfortunately the 6-core Intel is roughly equivalent to the 16-core AMD.
[1] http://wccftech.com/amd-vishera-fx8350-x86-piledriver-pitted-fx8150-cpu-benchmarks/ http://wccftech.com/amd-vishera-fx8350-x86-piledriver-pitted...
- ck2 14y agoThe 8350 and 8150 are 8-core, not 16-core, is that throwing off the math?
- velodrome 14y agoDoesn't AMD have advantage for cloud/VM workloads? They have more (but slower) cores...
- eropple 14y agoThe answer is, of course, "it depends." Heavily threaded floating-point workloads, for example, will see a ton of contention and performance degradation on the 6200-series Piledrivers because there's one floating-point unit for every processing core. The 6100 series doesn't have this limitation, but IIRC they still have some perf wonkiness on some loads. There are also power concerns with the AMD stuff, which matters a lot more in data centers/"cloud" environments than it necessarily does in a desktop.
- miahi 14y agoAll the cores fight for the same memory bandwidth. VMs do many context switches and cache invalidations.
- JohnBooty 14y agoA lot of server workloads (mail, web, database, most apps) are pretty light on memory bandwidth, so 16 cores sharing memory bandwidth isn't necessarily an issue. Cache contention/invalidation is probably the bigger potential issue. I don't have a lot of experience with server VMs and I don't know how smart (or dumb) they are about pinning things to particular CPU cores in order to minimize cache issues.