Got C8 clone which has XP-E Q5.
I have an idea to replace it with XP-G R5.
According to datasheet, XP-G produce more lumens at same drive current. but I know XP-G’s large die make spot beam wide.
other than wide beam, will it make any difference / improvement ? or worsen ?
Paypal balance say it 1.94$ :cry:
I already have a XP-G in my hand 
Then use XP-G. Wide beam is more useful
I like the XP-G because it’s an allround LED (not an extrem thrower or flooder).
Xte is same size chip and die as xpg but has narrower viewing angle(115deg vs 125deg). Does this translate to a tighter beam?
XR-E is 90 degrees I believe so XT-E is more than that and less than XP-G.
In a reflector (everything else kept the same) it would have more spill than XP-G (less light hitting the reflector).
You will notice the R5 is much brighter than the Q5
Perhaps slightly in theory, but it won’t throw better (smaller spot, not brighter spot). There’s not much light coming out the sides anyway and it’s more important to compare the profile of the rest of the light, but in general it really won’t matter much. Probably slightly safer to stick with xp-g over xt-e since that xp-e reflector might work bit better with more similar profile beam profile.
Theoretically, the R5 cool white is 30% brighter than the Q5 neutral white at the same current.
The fact that they don’t do the R5 and Q5 in the same colours may have an effect on the perceived brightness.
I have an XTE drop-in from KD with an OP reflector and it has a nice hot spot, really bright. If it was me and I had and XTE and a XPG I would try the XTE in it first to see how it looked.
I actually used my XTE alot before I recently built an XRE drop-in warm white (1500ma), and received my E1320 2100 (super flooder).
I ordered two XTE on 16mm boards a couple of days ago and will be putting them in something new and try and drive them hard to how they react. :bigsmile:
So is an XT-E worth trying out for throw? Would it be much worse than an XR-E R2?
Welcome back Agenthex!!!
That will be what I do with one of the ones i ordered. Was thinking of buying another C8 Pill and trying it in there or either just swapping it out with the xre Q5 thats in there. Hopefully will have it figured out in a couple of weeks when they get here. I actually like the XTE for some reason and I might be one of the few that do. LOL 
What about the new XP-G2?
After I get through playing with those XTE’s that is my next venture! The look good on the data sheet
I did a rough test using XP-G & XP-E.
1. XP-G make spot larger than XP-E.
2. XP-E spot intensity is bit higher than XP-G
3. For medium ranges, XP-G do better
4. For long ranges, XP-E do better
Conclusion:
XP-G is all rounder. balance of throw & flood.
And the new XP-G2 can only enhance that.
I may be wrong or dont see the whole picture but the little I have looked in to the difference between the xp-g and the xp-g2 the major factor in the difference they state is cost. The output seems to be really similar.
xp-g - R5 @ 350ma = 139lm, 700ma = 260lm, 1.5a = 463 lm
xp-g2 - R5 @ 350ma = 139lm, 700ma = 254lm, 1.5a = 458 lm
the numbers are even similar for the 80cri and the warm white, the G2 in warm white has 20 more lumens 1.5a that is it.
the v2 datasheet is rated at 85C (not 25C which is unrealistic in real life) so the v2 is 1-2 bins higher even though the “same” bins are used by cree