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i5 22410M turbo speed

post #1 of 5
Thread Starter 
Hi. Been testing out my vostro 3550 laptop cpu today with various bench tools. The stock speed is 2.3GHz with turbo boost up to 2.9GHz. When doing superpi or prime 95 or in fact any stress test to test the turbo boost, cpu-z always shows me 2694.3MHz maximum speed, no more. But my super PI speed is 14.2 seconds which is on par with what notebook reviews has so my cpu is presumably working at the same speed as them when they benched.

When doing XS bench score built into realtemp, it says speed 2883.63 MHz which is as close as dammit to the 2.9 turbo speed, while cpu-z still reads 2694 MHz. So, what's that all about? Why does cpu-z always say 2694MHz when realtemp says 2.88GHz? Does this mean cpu-z is inaccurate?

    
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post #2 of 5
No software is 100% accurate. Only the BIOS will be in regards to the actual clock speed
post #3 of 5
Download the intel turbo boost monitor gadget, i have that on my laptop, shows you the exact turbo boost realtime.
    
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post #4 of 5
Thread Starter 
Thanks chaps. Of the forums I asked at, only here did I get some replies, so nice one.

Actually, I do have an intel turbo boost thing on my laptop desktop, you can see it on the left in the screenshot. I'll have to take a closer look and see if it's the same intel turbo boost monitor gadget you mentioned.
    
CPUMotherboardGraphicsRAM
Phenom II 550BE O/C @ stock 3.1 Ghz Gigabyte GA-MA770-UD3 rev 2.0 Sapphire HD 5850 Extreme 1GB Patriot Viper 2x2GB DDR2 6400 
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Hard DriveOptical DriveOSMonitor
Samsung SSD 830 128GB / WD Caviar Black 1TB sat... Sony Optiarc AD 7243S W7 x64 23" Samsung S23A700D 3D+120Hz 
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Razer Lycosa XFX Pro 650w Core Edition CM 690. 5x120mm fans: AC Ryan, Xigmatek, Enermax Logitech MX518 1800dpi 
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post #5 of 5
Thread Starter 
Ah so I had intel turbo boost monitor gadget 2.0 all the time. *slaps head*

Seems like cpu-z is pretty accurate after all. With prime95 on small FFT's they both show 2.7Ghz. When I ran realtemp XS bench though, the monitor showed 2.90Ghz and the speed test averaged at 2.88. So why doesn't prime95 or other tests reach 2.9?

ediT: ah, solved. Apparently turbo boost for dual core is 2.7ghz and turbo boost for single core is 2.9ghz.


Edited by Roman5 - 10/31/11 at 7:41am
    
CPUMotherboardGraphicsRAM
Phenom II 550BE O/C @ stock 3.1 Ghz Gigabyte GA-MA770-UD3 rev 2.0 Sapphire HD 5850 Extreme 1GB Patriot Viper 2x2GB DDR2 6400 
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Razer Lycosa XFX Pro 650w Core Edition CM 690. 5x120mm fans: AC Ryan, Xigmatek, Enermax Logitech MX518 1800dpi 
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveOSMonitor
Samsung SSD 830 128GB / WD Caviar Black 1TB sat... Sony Optiarc AD 7243S W7 x64 23" Samsung S23A700D 3D+120Hz 
KeyboardPowerCaseMouse
Razer Lycosa XFX Pro 650w Core Edition CM 690. 5x120mm fans: AC Ryan, Xigmatek, Enermax Logitech MX518 1800dpi 
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