What’s the difference between Cree XR-E and Cree XLamp?

Art Vandelay · Nov 16, 2006

What's the difference between Cree XR-E and Cree XLamp? In a flashlight like the CR2, for example, what be the difference in performance be between a Cree XR-E and a Cree XLamp LED?

IsaacHayes · Nov 16, 2006

A lot more light! lol

But really I think the xlamp was around 50-60 lm @ 350ma or something? So they are like a S-bin lux1 IIRC. The XRE does around 80 or so lumens at 350ma, and ~130lm or more at 700ma.

IIRC there was a thread were someone had a comparison of a CR2 modded with a XRE vs an unmodded one.

modamag · Nov 16, 2006

One delivered what was promised (XR-E) while the other one doesn't (XLamp)

Nitroz · Nov 16, 2006

Here's the thread for the modded cr2 by 4sevens, who also sells the modded cr2 ion.

https://www.candlepowerforums.com/threads/139616

greenLED · Nov 16, 2006

oops! wrong thread

Gnufsh · Nov 16, 2006

Art Vandelay said:
What's the difference between Cree XR-E and Cree XLamp? In a flashlight like the CR2, for example, what be the difference in performance be between a Cree XR-E and a Cree XLamp LED?

AFAIK all of Cree's high power LEDs are Xlamp LEDs. The XR-E is actually something like the Xlamp 7090XR-E or something like that. It's brighter and more efficient (by a large margin) than older Xlamps.

Erasmus · Nov 16, 2006

Re: What's the difference between Cree XR-E and Cree XLamp?

Here's the official information from Cree :

All Cree high power LEDs are called Xlamp. There are 3 types of Xlamp LEDs :
- Cree Xlamp 4550 : tiny 0.5W LEDs
- Cree Xlamp 7090 XR : can be driven from 350 mA to 700 mA. These are the ones of which the white LED can put out typical 57 lumen @ 350 mA. Available in many colors.
- Cree Xlamp 7090 XR-E : this is the brand new LED the hype is about. Can be driven from 350 mA to 700 mA. Typical brightness of 80 lumen @ 350 mA. So far only available in white color.

Concept · Nov 17, 2006

In Endeavours CR2 Ion thread he has some beamshot comparisons between the two. Its Brighter but hasn't got that smooth transition from the hotspot outwards.

monkeyboy · Nov 17, 2006

The XR-E uses a different chip from the XR. The only similarity is the emitter packaging. This is why they look the same but require different optics.

The name 'XR-E' is a little confusing in this respect. I think a new name would have been beneficial for marketing purposes.

What’s the difference between Cree XR-E and Cree XLamp?

Art Vandelay

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IsaacHayes

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modamag

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Nitroz

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greenLED

Flashaholic

Gnufsh

Enlightened

Erasmus

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Concept

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monkeyboy

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