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OK, so I can't be 100%sure what this means: "Max turbo frequency is the maximum single core frequency at which the processor is capable of operating using Intel

OK, so I can't be 100%sure what this means: "Max turbo frequency is the maximum single core frequency at which the processor is capable of operating using Intel® Turbo Boost Technology and, if present, Intel® Thermal Velocity Boost. Frequency is measured in gigahertz (GHz), or billion cycles per second." Does this mean that is guarantedd that 1 core will reach 5GHz ? Are there exceptions? Will it work it regular coolers ? Will it turbo without BIOS changes so in default config? Thanks if you can clear this, because I am not sure if thix Max is considering power users that overclock or not

berbec 8y ago
The 8086k was 1-core 5ghz turbo. 9900k will do it with two. And it OCs to 5.1 on all cores.
vbezhenar 8y ago
I'm not an expert, so take my words with a grain of salt. 9900K will reach 5GHz for 2 cores. So if your OS uses only 2 cores at the same time, they'll work at 5 GHz. If your OS uses more cores, CPU will slow down frequency. Also if CPU will be boosted for too long, it'll slow down anyway, because it must keep its 95W TDP. But you can change setting in BIOS, something like MultiCore Enhancement. This will allow CPU to use as much power as possibe, so it should be able to keep working at 5 GHz and 2 cores, if your PSU and cooler are good enough to provide and dissipate that power.
dsr_ 8y ago
All of this is thermally limited. If your cooling system can pull the heat away fast enough, for some period of time the chip will go up to 5GHz on two cores. It's quite likely that a normal air-moving fan + heatpipe radiator will not let you do this for more than a few minutes.
dragontamer 8y ago
The i9-9900k should reach 5GHz as long as: 1. Your power supply can supply the 200W needed. 2. Your motherboard's VRMs (voltage regulator modules) can supply the 200W needed. 3. Your CPU coolers can extract 200W of heat. Its all running outside of Intel's 95W TDP specification, but it seems like Intel is comfortable with claiming 5GHz on 2-cores of the i9-9900k if you have the appropriate PSU / Mobo / Coolers.

berbec 8y ago

The 8086k was 1-core 5ghz turbo. 9900k will do it with two. And it OCs to 5.1 on all cores.

vbezhenar 8y ago

I'm not an expert, so take my words with a grain of salt. 9900K will reach 5GHz for 2 cores. So if your OS uses only 2 cores at the same time, they'll work at 5 GHz. If your OS uses more cores, CPU will slow down frequency. Also if CPU will be boosted for too long, it'll slow down anyway, because it must keep its 95W TDP. But you can change setting in BIOS, something like MultiCore Enhancement. This will allow CPU to use as much power as possibe, so it should be able to keep working at 5 GHz and 2 cores, if your PSU and cooler are good enough to provide and dissipate that power.

dsr_ 8y ago

All of this is thermally limited. If your cooling system can pull the heat away fast enough, for some period of time the chip will go up to 5GHz on two cores. It's quite likely that a normal air-moving fan + heatpipe radiator will not let you do this for more than a few minutes.

dragontamer 8y ago

The i9-9900k should reach 5GHz as long as: 1. Your power supply can supply the 200W needed. 2. Your motherboard's VRMs (voltage regulator modules) can supply the 200W needed. 3. Your CPU coolers can extract 200W of heat. Its all running outside of Intel's 95W TDP specification, but it seems like Intel is comfortable with claiming 5GHz on 2-cores of the i9-9900k if you have the appropriate PSU / Mobo / Coolers.