09-15-2016 04:14 AM
We have several E93 desktops with i5 4440 processors (Machine Type Model: 10AR003KCR).
Because of incresed need for computation power (more threads with higher speed), we would upgrade them with processors such as Xeon E3-1271 or i7-4770 (same LGA 1150 socket).
Will it work, does BIOS allows something like that? Any suggestions? Thx!
Solved! Go to Solution.
09-15-2016 07:06 AM
What is the task or software you are wanting to optimize the PC for?
09-15-2016 07:19 AM
Thx for reply.
Combination of bio and engineering simulations (can be 100% paralelized so max threads/cores is needed).
We have allready upgraded E93s to 32GB RAM and 500GB SSDs and this is working OK.
09-15-2016 08:56 AM
OK, got it.
Yes, you can upgrade to the i7-4770, as that was an option for the E93 Tower, you could also upgrade to the i7-4790, as that was an option for later models (replacing the i7-4770.) I can't say if that would be worth the difference in the price of the chip.
I would update to the latest BIOS beforehand, ensure that is working correctly, and use the 'X' technique for application of quality thermal paste.
10-24-2016 11:49 AM
Well we have some problems.
We bought i7 4790k (previously all Thinkcentres were updated with Lenovo utility) and when replacing they just dont want to boot. No beep, no led, nothing...
Tried to erase CMOS, tried to reduce memory but no effect.
When turned on, fan starts to work, HDD spinning and everything looks like it is OK, but monitor and HDD lights are off and cant enter BIOS or anything else.
Switching back to i5 - everything works.
10-24-2016 12:22 PM - edited 10-24-2016 12:41 PM
The i7-4790 is not the same as a 4790K (which supports overclocking that gamers like to push their game performance.)
The processor needs to be specifically one that was used using the lifecycle of the E93 10AR system. Exactly the same processor as shown in the link above:
10-24-2016 10:36 PM - edited 10-25-2016 01:01 AM
I know it is not the same, it has 400MHz faster base clock and everything else is the same as 4790 (yes and OC feature but we dont need that).
How can you be sure that 4790 will work if on their webpage is listed only i7-4770? (Update - in my region is listed only 4770 and not 4790).
If this is really the case, either BIOS should be updated or we need to change all Thinkcentres or all 4790ks... Unbeliveable...
10-25-2016 09:08 AM
The update to the E93 Tower with the 4790 processor (model 10AR0060AX) I have presented above.
This morning I took the additional step of finding the SFF of the updated E93 system (model 10AQ005NSA), which uses the same motherboard and available with the same processor specs (here's a google of websites that sold that system):
and ran it through the process I use to determine compatibility, that this 4790 SFF system uses the exact same BIOS as yours (documented in the last post here.) I had already done that for the Tower when I made the initial recommendation.
10-25-2016 09:51 AM
I'm not saying that 4790 will not work (maybe it will maybe it won’t), I'm saying that i don't see any reason why 4790k shouldn’t...
Sorry but webpage screenshots are just not relevant. I’ve checked all Lenovo site and E93 manuals and there is a lot instruction about processor replacement but nowhere is mentioned list of compatible or statement that K processors will not work!
Basically I don’t know even whom to ask for list of approved processors since they are nowhere officially listed (are you Lenovo employee?). Wouldn’t it be easier/logical to correct BIOS to allow all processors with that socket and (as for standard BIOS) disallow OC??