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post #351 of 355
Quote:
Originally Posted by Dasa View Post

so it turns out broadwell e has per core overclocking mind testing if you have some cores much better than others?

The answer would be yes without even testing too much. This is also applicable to Haswell-E.
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i9 7900x Asus ROG Rampage VI Apex EVGA GTX 1080 Ti Founders Edition EVGA GTX 1080 Ti Founders Edition 
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G.Skill TridentZ DDR4-3200 C14 QC - 32GB Samsung 950 Pro M.2 SSD 512GB Samsung 950 Pro M.2 SSD 512GB Samsung 850 Evo SSD 250GB 
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post #352 of 355
Quote:
Originally Posted by Dasa View Post

so it turns out broadwell e has per core overclocking mind testing if you have some cores much better than others?

haswell-e has this too.
post #353 of 355
Quote:
Originally Posted by ssateneth View Post

haswell-e has this too.

Not really in the same essence as is possible at the moment. Maybe a BIOS update will change that, but for now you have to disable all except one core and test that core individually. You can't set different ratios per core; only per core groups, which don't take into account the physical cores themselves.
post #354 of 355
Hmm, I guess yo uare right. I misinterpreted what I saw in the BIOS. It had an indicator for each core and its multiplier, but thats really some sort of "ok, 8 cores fully loaded will go this speed, 7 cores fully loaded will go that speed, 1 core fully loaded will go the fastest speed, etc". That was really misleading :/
post #355 of 355
That form of Intel Turbo Boost is only really useful (and actually really useful) for laptops and ULV CPUs. With portable situations, the performance is tied to power consumption, so by adjusting each group of cores individually, 1 core = 3.5GHz, 2 core = 3.2GHz, 3 core = 2.9GHz, 4 core = 2.5GHz allows the CPU to fit within that thermal envelope. Whereas on desktops we can easily run the whole package at the same frequency, and rather running a single core shouldn't require a change in voltage than running all cores together as the algorithm chooses any physical core (so sometimes it'll choose the best core, then sometimes will choose the worst core). So a fixed voltage and frequency across all cores on desktop platforms is the best option.

But Broadwell-E changes this and allows single-theaded apps to gain performance beyond the typical limits of all cores at once, as adjusting individual voltages allows temperatures to remain in check whether you are running a single core at 1.5V or all cores at 1.4V, the temperatures should be similar. Less cores = less heat = more voltage headroom.
Edited by Desolutional - 5/31/16 at 1:24pm
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