Tt Power Express 250W

[CAD4466HK]

I see that this paticular unit didn't suffer from not being able to be
turned on/turned off via the main PSU.
I would think the hotbox-testing of something like this,would have very interesting results.
1. Being that it's exhaust pumps air into the case
2. Being that it's intake draws air from outside the case

results being that "mabey", the hotbox "might" not have that
much of a affect on a bay mounted PSU?

What do you think?:) http://www.techpowerup.com/reviews/Thermaltake/PowerExpress/

[jonnyGURU]

I have one and I'm waiting for an FSP and Ultra model so I can do a round up.

AFAIK, they all turn on with the main PSU.

[CAD4466HK]

I have one and I'm waiting for an FSP and Ultra model so I can do a round up.

AFAIK, they all turn on with the main PSU.

From what I've been reading, A small percentage of people have been
experienceing this in their units,mabey faulty PSU's? Who knows?

Can't wait:D

[Sphere]

I think I'd like to see the names on the caps :)

In the real near future I can see these becoming very popular, if indeed the specs for the 8800 series are correct in Sli, or even close to being correct.

Sphere

[CAD4466HK]

I think I'd like to see the names on the caps :)

In the real near future I can see these becoming very popular, if indeed the specs for the 8800 series are correct in Sli, or even close to being correct.

Sphere

yeah,I tried everything to read those caps:o

[CAD4466HK]

I have one and I'm waiting for an FSP and Ultra model so I can do a round up.

AFAIK, they all turn on with the main PSU.

If I may ask, what are the specs on the Ultra?

[jonnyGURU]

I think I'd like to see the names on the caps :)

It's a Sirtec w/ Teapo caps.

[Sphere]

Guess that means it's good enough for Enhance, and reading tells me that Etasis uses some as well.

On the other hand, there appears to be a fair amount of bad press on these caps, is this old news? or have they changed their ways?

Sphere

[GalvanizedYankee]

Guess that means it's good enough for Enhance, and reading tells me that Etasis uses some as well.

On the other hand, there appears to be a fair amount of bad press on these caps, is this old news? or have they changed their ways?

Sphere

In a properly ventilated/cooled PSU, Teapo seem to live a good long life. My guess would be better than 5 years.
There are many caps worse than Teapo...Fujyyu, OST, Gloria, Jamicon, the list is long. Read over at badcaps.net/

However...On a poorly cooled mainboard they have been known to fail early. The thing that pisses-off techs about Teapo is they can fail without physical signs. There will be no tilting, swelling or venting. Caps that are close to hot working VRM/FETs and shrouded from cooling air suffer the most. Remember that the PCB is layered with many copper traces and this copper is a for real heat sink, linking the VRM/FETs to the caps.

VRM/FETs can work well at 100C, many caps are rated at 85C for 2000hours, so you can see that there could be an issue.
RubyCon states that for every 10C drop from the rated temp...Cap life doubles :D So, if an 85C/2000hour rated cap lives in a working enviroment at 65C, it's service life should be 8000hours.

Remember, PSUs do not have multi-layered PCBs and have direct cooling air being blown down or across them.

EDIT: Teapo are dark green with a gold stripe, the vent will be marked with a tri-star and three dashes between. The caps in the linked unit are Teapo as jonny stated. The bulk cap(the big guy) might be Teapo also but they are a non-issue.

[Sphere]

Thanks 'Yankee...appreciate it. When I was googeling for info, you had some posts at Anand (that came up)talking about teapos.

So, they're not bad with adequate cooling, with the downside being they can *check out* with no signs of failure.


Edit:As you wrote,(at Anand) I think it would be worth wild to have a sticky here with the colors/markings that indicate the mfgr, as you wrote there.That's some good info that some of us *nubs* could benefit from .

Sphere

[jonnyGURU]

Remember, PSUs do not have multi-layered PCBs and have direct cooling air being blown down or across them.

Actually, quality PSU's do have multi-layered PCB's. Typically two. Remember: That's one of the big differences between a Seasonic built Antec and a Seasonic built Corsair. ;)

[davidhammock200]

I just hopr these new GPU's don't need more than 20A for their PCIe connectors. :rant:

[GalvanizedYankee]

Actually, quality PSU's do have multi-layered PCB's. Typically two. Remember: That's one of the big differences between a Seasonic built Antec and a Seasonic built Corsair. ;)

Pick apart the post?:p

True! But motherboards will have.......What? 5+ layers with traces between them. My point was about heat transfer through the traces causing heat build-up in the caps through thier soldered leads. Teapo caps in parallel, serving the VRM, located between the CPU and I/O plate with little cooling air are no going to live longer than when used in a well cooled, uncrowded PSU. :)

[jonnyGURU]

Pick apart the post?:p

True! But motherboards will have.......What? 5+ layers...

Actually, four. ;)

[madmat]

Mine has six :P

[jonnyGURU]

I've had a few engineering samples that were 6 layer, but it seems as soon as they get "all of the bugs worked out" they switch to 4 layer.

Like when the Slot A and then the Socket A motherboards first came out and had the AMD 760 chipset, those were all 6 layer. Then when the motherboard factories migrated to VIA chipsets, they started making the boards 4 layer.

[madmat]

Chaintech was one of very few i875 chipset based mobo MFG's to go with a 6 layer board. It was expensive as hell though, I paid nearly $350 for the mobo alone but it's stable and OC's well so it was worth it.