voltage related question

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taz0697

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May 19, 2013
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i bought a new cpu for my laptop off ebay and wanted to know if this will need more voltage to run than my old one? The 2 cpus are i3 380m (current) and a i5 480m (upgrade). The tdp on both are 35w but the clock speeds are different. Will the i5 still work on the stock voltage of the laptop? Will there be much of a heat difference? And on a second note unrelated to the first, will faster ram (800-1066mhz)make a difference for the intel hd graphics? And will more ram (4g-8g) be used for graphics? Or will the hd graphics only use 1.7g no matter what?
P.S sorry for spelling or grammar mistakes if any
 
Solution
elemein


Really? The voltage is greyed out? That is very unusual. Oh well, not a big deal.

A quick google search:
http://en.wikipedia.org/wiki/List_of_Intel_Core_i3_microprocessors
http://en.wikipedia.org/wiki/List_of_Intel_Core_i5_microprocessors

Ctrl+F the two models, it shows that both models operate between 0.775–1.4 V, and since they are from the same generation, it's very likely the operate off the exact same voltage table. Your upgrade should be totally fine.
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elemein

elemein

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- The HD graphics included probably doesn't use 1.7 GB currently. It probably uses either 128 MB, 256 MB, 512 MB, or 1024 MB. Most likely 256 or 512 MB in your case. Upgrading from 4-8 GB will adjust the ratio of system RAM:shared video RAM and will give it more video memory to work with.
- Faster RAM will increase the speed of the HD graphics. Past 1066 wont effect it though since the IMC can't clock voer 1066.
- The RAM upgrade is a good idea, and will likely positively raise graphical performance, but it won't make it exponentially more powerful. Don't expect a very high boost.

What is the voltage that the old i3 was running at? If the TDPs are the same, it is very likely that they are using a very similar, or even the same voltage table, and therefore should both run fine.
 
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taz0697

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sorry for the newb question but is there a software or a place that i can find out what my voltages are? I checked the bios but its all locked up and doesnt tell me voltage
 
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elemein

elemein

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CPU-Z will tell you.
 
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taz0697

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well looking at cpuz it doesnt tell me voltage for cpu but it does have voltage under sdp at 1.50. And i also noticed that cpu z tells me that tdp is only 25w but intels website says the 380 m is 35w. Will that make any difference?
 
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elemein

elemein

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The voltage tables should match up if the TDPs are the same. Though are you sure CPU-Z isnt showing your voltage? That's unusual.

CPU-Z will tell you how your CPU is functioning in accordance to a TDP table in how it manages it's resource. My A8-3520M is only 35W on AMD's website, but CPU-Z says 41W.
 
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taz0697

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Well it looks like my mobo might not support the voltage feature of cpu z, its all greyed out. But from what i got out of your last post its normal that it would show me tdp lower than that of what intel rated it for. Is that correct?
 
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elemein

elemein

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Really? The voltage is greyed out? That is very unusual. Oh well, not a big deal.

A quick google search:
http://en.wikipedia.org/wiki/List_of_Intel_Core_i3_microprocessors
http://en.wikipedia.org/wiki/List_of_Intel_Core_i5_microprocessors

Ctrl+F the two models, it shows that both models operate between 0.775–1.4 V, and since they are from the same generation, it's very likely the operate off the exact same voltage table. Your upgrade should be totally fine.
 
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taz0697

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Thanks alot you were very much helpful. Im new to this site so i dont know if theres like a rep thing or anything like that but if there is tell me and i would gladly +1
 
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elemein

elemein

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Nope, best solutions is sortof like our "+rep". Thanks, and I'm glad I could help, if you have any other questions, feel free to ask.
 
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