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mobile i5 clock speed monitoring

wolf

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#1
I recently purchased a HP Pavilion DV6-3030TX, specs as follows;

Core i5 540M
2x2gb DDR3 1066mhz
ATi M5650

when I set the power plan to high performance in windows, the chip seems to permanently clock itself beyond the sticker speed if the thermal headroom is availiable (also researched this)

sticker speed is 2.53ghz, max turbo clock for both cores loaded is 2.93ghz and single core loaded is 3.06ghz, and from looking at CPU-Z a hec-of-a-lot I've never seen it drop below 2.80ghz.. but the weird thing is my gadgets and various other palces in windows allways report the sticker speed even when CPU-Z shows higher;



however when the clock speed drops the gadgets etc reflect the actual speed;



essentially I'm wondering where CPU-Z pulls the clock speed from, is it 100% reliable when it shows 2.80-3.06ghz? or is the rest of windows right in saying the speed is only 2.53ghz

not the most interesting question I know, it's more that I'm curious to know if this chip is indeed pretty much permanently clocking itself considerably faster than the sticker speed, cos if so thats pretty awesome, given the thermal headroom does seem to always be there even with both cores full loaded... also what is max temp on a mobile i5?

cheers TPU :toast:
 

sneekypeet

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#2
here is what I see.

In CPUz it is showing turbo in the first image. The second image is showing speed step. Both images show Everest reading its stock clocks with no variation.
 

wolf

Performance Enthusiast
Joined
May 7, 2007
Messages
5,576 (1.44/day)
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System Name MightyX (MITX)
Processor Core i7 4770K @ 4.2ghz
Motherboard Asus Z87i-Pro
Cooling Noctua NH-L12
Memory 16gb DDR3 1600 LP
Video Card(s) Gigabyte GTX1080 G1 OC
Storage Lots of SSD's
Display(s) AOC AGON AG352QCX
Case Raven RVZ-01
Power Supply SFX 450 G
Mouse Razer Mamba Tournament Chroma
Keyboard Razer Blackwidow X Chroma
#3
here is what I see.

In CPUz it is showing turbo in the first image. The second image is showing speed step. Both images show Everest reading its stock clocks with no variation.
yeah depending on what I look at sometimes its always stock, sometimes it follows speedstep, sometimes it follows turbo mode.... I'd like to assume CPU-Z is always showing the ACTUAL speed, just want some confirmation on that, and maybe a reason why these other gadgets and apps dont know the 'actual' speed.
 

sneekypeet

Unpaid Babysitter
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System Name His
Processor Intel i7 5930K
Motherboard Asus Maximus V Extreme
Cooling Thermalright True Spirit 140 BW Rev.A
Memory Corsair Dominator Platinum ROG
Video Card(s) nVidia GTX 1080 SLI with EVGA Hybrid coolers.
Storage Samsung 960 Pro / Crucial MX300 750GB / Seagate 1TB Spinner
Display(s) Sony 43" 4K 60hz
Case SilverStone Temjin TJ11
Audio Device(s) Realtek on board > Sony receiver > Cerwin Vega's
Power Supply Thermaltake TPSG 1050W
Mouse Always Changing
Keyboard Always Changing
Software Windows 10 Pro 64
#4
CPUz is the reliable one between it and everest.