Core i3-8100T vs Core i3-8100

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hydrogen18

Limp Gawd
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Oct 27, 2002
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I'm trying to understand the difference between two intel parts

BX80684I38100 - https://ark.intel.com/products/126688/Intel-Core-i3-8100-Processor-6M-Cache-3_60-GHz
CM8068403377415 - https://ark.intel.com/products/129944/Intel-Core-i3-8100T-Processor-6M-Cache-3_10-GHz

Now one of these parts is marked OEM, but you can just buy it off Newegg. From what I can tell both use the same LGA 1151 socket. Both have the same feature set by inspection. One has a slightly higher clock, but I could care less.

The main thing I am seeing is the 35W TDP vs 65W TDP. I'm wanting to purchase this for a home server build that will be always on. Will the idle currently be any less with the 35W TDP part? Are there any other differences I am missing here?

If it matters, this is the motherboard I was looking at purchasing: https://www.newegg.com/Product/Product.aspx?Item=N82E16813119093&ignorebbr=1
 
Exactly. (As I've come to understand it) The T and S parts have lower TDP (and clock speed / multiplier) versus the regular parts.

K = unlocked multiplier for balls to the wall performance
() = mainstream non unlocked but still relatively high turbo multiplier
S = Slightly lower clocks but still optimized for performance
T = Significantly lower base clocks and lower TDP, prioritizes power saving over performance.

Underneath it all they're all the same chips.

So with that T part you've got a 3.1ghz (31x) base multiplier versus the 3.6ghz (36x) base multiplier. The T part also has a 'TDP Down' mode where it could lock the base multiplier down even further to 21x to lower the TDP.

For a home server the T part you're looking at would actually be quite nice.
 
I'm going to replace my aged e5-1620 with a new T part or even an 12 core Atom soon.
 
The oem tray T model is $13 or so more expensive on average currently. I'd double check to see how much power the 8100 uses at idle. Unless heat matters that much to you (say its in a small case) or power cost is that much, might not be worth the extra money.
 
Do you have any news related to i3-8100T or Core i3-8100 power consumption when idle?
 
At idle, I'm not sure you would see a significant savings in power. If you're running a 24/7 load, do the math. 35W vs 65W = 30W*24= 720 W/H so basically if you're running 24/7, you save $0.05 a day depending on your electricity costs. If the difference is $13 it would take you 260 days to break even in power savings. Once again, assuming a 24/7 load. The reality is you probably are never going to use it 24/7 with a load so you are talking about never saving the power difference over the useful lifespan of the chip.

Generally speaking, I see no reason to get a T rated chip unless your cooling system requires it.
 
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30 * 24 = 720 instead of 240

so for month will be 21.6 KW/h which for me value 3.19$ per month.
 
adrhc said:
30 * 24 = 720 instead of 240

so for month will be 21.6 KW/h which for me value 3.19$ per month.
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I wasn't really paying attention to the math so essentially it ends up being five or six cents vs $0.02. But my point still stands that it's only if you are running 24/7 at full capacity. Extremely unlikely.
 
so for month will be 21.6 KW/h which for me value 3.19$ per month
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And that is only if you have both systems running at 100% CPU usage on all cores all the time which will be very unrealistic in most situations.
 
also note that Intel's TDP figures for non- T/S parts are generalized and tend to underrepresent power used by high-end parts and overrepresent power used by low-end parts. Example, the "95W" i5 in one of my systems actually sinks more like 60W under load.

I wouldn't be surprised if the 65W i3 actually consumes more like 40W or less.
 
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KATEKATEKATE said:
also note that Intel's TDP figures for non- T/S parts are generalized and tend to underrepresent power used by high-end parts and overrepresent power used by low-end parts. Example, the "95W" i5 in one of my systems actually sinks more like 60W under load.

I wouldn't be surprised if the 65W i3 actually consumes more like 40W or less.
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Every chip is different with it's TDP effecientcy so they clump millions of CPUs into categories like 65w or 95w so you don't have 30+ processor SKUs per cpu line with super exact TDP ratings.
 
KATEKATEKATE said:
also note that Intel's TDP figures for non- T/S parts are generalized and tend to underrepresent power used by high-end parts and overrepresent power used by low-end parts. Example, the "95W" i5 in one of my systems actually sinks more like 60W under load.

I wouldn't be surprised if the 65W i3 actually consumes more like 40W or less.
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So how would that work for a "T" even less power or not as power effcient as they claim? Gamers Nexus did some bits of how TDP doesn't mean jack squat any more

EDIT:
 
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cdoublejj said:
So how would that work for a "T" even less power or not as power effcient as they claim? Gamers Nexus did some bits of how TDP doesn't mean jack squat any more

EDIT:
Click to expand...

This is all speculation since I don't have hands-on experience with -T series Intel parts, but I would guess the 8100T would actually consume/dissipate right around its rated TDP. Thats my intuition based on the frequency and number of cores. It won't go over its TDP like i5/i7/i9 chips will because the i3 doesn't have turbo boost but 35W sounds about right for 4 cores and 3.1Ghz. Of course I could be totally wrong!
 
You can just set the max power (TDP/amperage whatever) in the bios on a 8100
 
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