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what is the turbo mode formula for i7-720QM
#1
i need a mathematician to solve this.

example if my laptop CPU i7-720QM was 1.6Ghz on normal clock speed under Win7(x64)
what x.xxGhz in turbo mode?

**EDIT**
if 2 cores is active:x.xxGHZ?
if 3 cores is active:x.xxGHZ?
if all cores is active:2.8ghz?
Main Hub:i5-4670(3.4Ghz Factory Clocked),ATi Radeon HD7770(GDDR5+128-bit+1GB),Win 10 SL(x64),ASUS H8M-E,8GB DDR3 RAM
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#2
You don't need a mathematician. You need specifications. From Wikipedia, Turbo is 1/1/6/9 which translates to:
1 core active: 2.80 GHz
2 cores active: 2.40 GHz
3 cores active: 1.73 GHz
4 cores active: 1.73 Ghz

For the sake of PCSX2, the dual-core mode with 2.40 GHz is the most relevant.
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#3
(09-01-2010, 11:46 PM)tallbender Wrote: i need a mathematician to solve this.

example if my laptop CPU i7-720QM was 1.6Ghz on normal clock speed under Win7(x64)
what x.xxGhz in turbo mode?

**EDIT**
if 2 cores is active:x.xxGHZ?
if 3 cores is active:x.xxGHZ?
if all cores is active:2.8ghz?

2 cores = 2.4ghz
3 cores = 1.73
4 cores = 1.73
Windows 7 - Asus G73jh-a1 - 17-720qm @ 1.6 GHz (2.8 GHz)(2.4ghz)(1.73ghz) - ATI Mobility Radeon HD 5870 @ 700/1000 (sometimes oc to 800/1100) - 8 gig ram
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#4
thanks.
Main Hub:i5-4670(3.4Ghz Factory Clocked),ATi Radeon HD7770(GDDR5+128-bit+1GB),Win 10 SL(x64),ASUS H8M-E,8GB DDR3 RAM
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#5
What's more important anyway is the configuration of your BIOS as to when and how it decides to switch out of SpeedStep mode and into Turbo mode. Laptops are typically hardwired to use Speedstep more and Turbo less, for example -- so you might need higher overall single or paired processor loads to achieve turbo speeds.

These factors become problems because inevitably in PCSX2, the execution speed of one core is directly dependent on the execution speed of another core. If the CPU decides to throttle speed for some reason, the overall load on both PCSX2 threads will decrease because they are inter-dependent. This can result in a snowball effect that causes many laptops to run at their slowest (or near-slowest) speeds while PCSX2 is running.

Unfortunately every laptop appears to be configured differently in this area, depending I guess on the manufacturer's confidence (or lack there-of) in the laptop's cooling ability and power source consumption ... so who knows what you're getting.
Jake Stine (Air) - Programmer - PCSX2 Dev Team
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