Hi, friends. As i've mentioned earlier, i've tried to run my M93P Tiny 10AB with i7-4785T without any success, so i sold it and bought Xeon E3-1275L v3 even cheaper on ebay ($150 vs $190). While searching, found info that to be able to install i7-4785T, your Tiny should be late 2014-2015 models, like 10E9 etc. They were equpped with i5-4590T, not 4570T from factory. So, if you have most common 10AA, 10AB (2013 year), i7-4765T is the fastest option possible for you. Or the boosted +10W (45W) option with Xeon.
Okay, back to my Tiny with Xeon. Works perefectly for about two weeks, never ever had any problems running it at high loads.
Aida64 burn-in CPU+GPU+Cache test never shows throttling or temperatures over 74°C with something like 2400 rpm fan. With OCCT test i was able to see peak 81°C after 2 hours continuos testing in "CPU:Linpack" mode. While getting such temperature values, CPU fan starts blowing at 3300+ rpm and decreases temp back to 78°C with 2400 rpm. So the cooling system is pretty enough to use with 45W CPU plus little reserve for hot days but nothing more. I've seen youtube video with i3-4170 (54W TDP) M93p upgrade and autor noticed he have cooling problems with such power and they're not possible to be fixed by changing the thermal grease or even opening the case.
I think many of you want to see real perfomance difference between their "stock" i5-4570T and Xeon E3-1275L v3. So, i made them. PCMark, Aida64, Passmark, Cinebench, WEI. My system was equipped with Lenovo 90W PSU from factory, thus i don't know what results you will get with your most common 65W PSU. But i personally can confirm that i have seen 47W power drawing on Xeon 1275L v3 from Tiny. That's just the CPU. Plus 8,7W by DDR3 16Gb + 5W SSD. Add some USB devices, chipset, mainboard circuits etc. and decide.
Back to test results.
i5-4570T:
Xeon E3-1275L v3:
As you can see, there is significant perfomance increasement with anything that uses multiple core.
But, from the other side you will get tangible decreasement in GPU perfomance. Because of Xeon's integrated video is Haswell GT1 with 40 cores, 10 CU's at 1200 MHz while desktop CPU like 4570T have Haswell GT2 with 80 cores, 20 CU's at 1150 MHz. GPU cores rule the same as CPU core quantity.
There's is one more variant of Xeon i found interesting, but almost 99.9% it will not start in our systems - Xeon E3-1268L v3. Compromise variant between CPU/GPU power, it have P4600 graphics with 20 CU's at 1000 MHz with 2.30-3.30 GHz frequency and 45W TDP. Rare CPU, found it on eBay for $175. I was not able to find any info regarding it's BIOS support on any MOBO websites like Asus, Gigabyte, MSI etc. Passmark database have only one result record, made on some kind of industrial Siemens PC. While Xeon E3-1275L v3 is supported almost on any Q87+ 1150 mainboard, no matter desktop or server.
I've decided to stop on E3-1275L v3 variant and not to try i7-4765T since Xeon is top option, without doubts. Such upgrade uses the manufacturer's reserve for power and cooling systems capabilities and does so exact within a reasonable range. I may obtain, let's suggest, 23 fps on i7-4765T instead of 17 fps with current Xeon E3 in some games after applying LQ settings, but anyway integrated video is not the forte of our systems and both variants won't be comfortable to play, so I'll use what he's good at - CPU power.
If anyone have Xeon E3-1268L v3 on their systems, it'll be interesting to try whether it will run on M93p Tiny, please share results.
Also it'll be great if someone is able to decomnpile or provide any kind of utility that can show us real CPU support list that hardcoded in M93p Tiny BIOS. There's none official info about E3-1275L v3 support on Tiny M93p, but it is working. I think it's the only way to figure out on why some systems works with i7-4785T while others don't.
