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my laptop gaming performance sucks, because I have an i3 with only 2 cores clocked on 2.2GHz (i3-2328M). So recently I found an i5 with also dual core but clocked on 2.5GHz with turbo up to 3.1GHz (i5-3210M). I have checked and compared parameters of those two, TDP = same, socket = same, but the bridges are different. After some search I found few answears, that say the ivy cpu can be put on a sandy motherboard laptop, but I need to be sure about my bios support. The problem is that my laptop (Toshiba Satellite C850 19Q) doesn't have it's motherboard name published so I can't know the support of motherboard. So if there is someone who knows more, will the mentioned i5 work with my H2O BIOS (Latest version from Toshiba - 6.80). Anyhow... Please, tell me, since the CPU is now very cheap but not for long and shipping is for me very expensive, so I don't want to invest a lot of money to discover that it doesn't work. Please do not move my question off, I really need help :(

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    There is no such thing as a "motherboard name" for a laptop. Pretty much every laptop has a unique motherboard designed just for that model/series. (So the laptop model is the motherboard model.) If the laptop was manufactured before the BIOS that supports Ivy Bridge was released then there is little chance that the CPU upgrade will work. Most importantly, the CPUs on laptops are soldered, which makes it nearly impossible to replace the CPU without special tools and expertise. – Romen Nov 21 '19 at 22:01
  • @Romen the sockets are FCPGA988 (non-soldered), so that is not a problem, about the bios. I don't really know. Toshiba basicaly shares minimal amount info of bios. I couldn't even find compatible CPUs. – user1109611 Nov 21 '19 at 22:07
  • It's nice to see a socketed mobile CPU! Did you also consider the physical dimensions of the new CPU? You might need thermal pads or have to delid it to make it fit in the existing heat sink if the thickness is different. Also, read the patch notes for your laptop BIOS updates, it will probably mention Ivy Bridge support if it was ever added. – Romen Nov 21 '19 at 22:11
  • Gosh. I found some nice info. I found a laptop from the same series (c850) with the i5-3210m and seems like all the C850s have the H000052750 motherboard (found this info by looking around). Is it possible that my laptop will cooperate with that i5 too? @Romen – user1109611 Nov 21 '19 at 22:16
  • that depends on the factors that you and I have both discussed already. A) Does it physically fit in the laptop? (Not just with the socket but the heat-sink too) B) Is your BIOS a new enough version? – Romen Nov 21 '19 at 22:18
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Your motherboard probably uses the i3-2328M CPU (Intel spec sheet), a Ball Grid Array CPU. Soldering of BGA devices requires precise control and is usually done by automated processes. Humans have a -very- difficult time with this kind of work, and it is not recommended.

Also, many of what are sold as i5-3210M processors are also Ball Grid Array CPUs.

  • Soldering BGA is a highly specialized skill. Even those few that have mastered it are extremely loath to tackle a high pin-count package like a CPU. For an amateur it is completely impossible. So best make absolutely sure that that CPU is NOT a BGA version. – Tonny Nov 21 '19 at 22:18
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    @K7AAY I have already dissasembled my laptop and I saw that the socket has that thing u rotate with screwdriver to put the cpu out, and the cpu i want to buy. Seller has sent me pics, it doesnt seem to be a BGA. Since even on the main cpu site of the i5 3210m is listed only the FCPGA988, and i think there is no soldered type of fcpga988 – user1109611 Nov 21 '19 at 22:22
  • Excellent! Thank you for checking that! – K7AAY Nov 21 '19 at 23:15

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