And now the question of the day: Who manufactures the S5 fan and what model?

Probably  JSL
JIANG SHAN LAI ELECTRONICS CO. LTD

No plans have been made either way yet, we'll just have to be patient.

This is what i want to do with all my miners https://www.youtube.com/watch?v=a6ErbZtpL88

more info
http://www.datacenterknowledge.com/archives/2013/12/05/hong-kong-immersion-cooling-site-bitcoin-mining/

bobsaq3 and sidehack are spot on at stock/factory clock rates.
We prefer to allow a little more head room for OC'ing the Prisma's and hence have migrated to one DPS-1600BB per Prisma.
OC'ing a Prisma only makes financial sense if the cost per Kwh is low ($0.08/KWh or less).

Then there are the heat dissipation issues that come with filling a room/Data Center with OC'ed Prisma's.
Pursuant to that we are prototyping Open Bath Immersion (OBI) cooling using the 3M Novec Engineered Fluids in custom built polycarbonate immersion tanks.
With the ultimate goal of immersing 32 OC'ed Prisma hash boards, controlled by an RPi w/wireless, in an OBI tank powered by 5 DPS-2000's.
Power consumption should be ~10Kw per tank and dissipate ~32K BTU continuously, enough to heat the average American sized home in a Minnesota winter AND GET PAID TO DO IT.
The residual/excess heat could be used to heat a garage, heat a driveway, heat sidewalks, melt snow off of the roof, heat a pool/hot tub/fish pond, etc. . . . . . .

Our Youtube channel (PlanetCrypto) has some videos of our initial testing.

Initial testing of 24x Tube Erupter boards in a Walmart fishtank:
http://www.youtube.com/watch?v=meOf0FJBkGA
http://www.youtube.com/watch?v=y_yfHJ8yoh8

A polycarbonate immersion tank with 2x Bitmain S3+ hash boards:
http://www.youtube.com/watch?v=gcb9TyQP5ZA
http://www.youtube.com/watch?v=fStHV_Q-x7s

We no longer power the fan in the S3+ tank as it is not required for condensation.
The heat generated from the S3+ tank supplements the in-floor heat in our little DC.
We have laid PEX in the ground outside the DC as a place to dump excess heat in upcoming expanded systems.

When we get a 32 Prisma board system up and running we'll post some vid's on the channel.

Not the most complete description but I take it there is an inflow and outflow pipe pair to the tank moving the Novec to an external radiator to exhaust heat and a second inflow and outflow pair to the condenser also to an external radiator?  Ah, found it.  One gallon offered for sale @ $379.95.

Hi, we are in the same boat. 1 of my s5 blade dead in a month and promised to give shipping label to ship back. But its already 3 weeks since the promised and I never heard back from them again. I send couple email but no reply at all. BITMAIN if you read this please prosess our RMA. I Have been loyal customer since antminer S1.  Thank You

See, I don't understand that.  If it's an enclosed system and the Novec evaporates off the ASICs dropping their temperature, that energy is in the Novec gas.  If it condenses within the enclosed container as it must or it's lost, that energy must be released.  The energy wouldn't leave the enclosed container and its temperature would build.  He says he might heat a driveway.  So, is taking the heat out via whatever fluid is circulating within the condenser enough to remove all the heat?

The fluid vapour is cooled by water.