Head Pressure

bgavin · #1 (**permalink**) 05-04-2008, 04:11 AM

Would Scythe engineering please post the static head pressure for the SSF21x series fans please? mm/H2O would be fine, thanks.

It would also be nice to know for sure, if this line of fans has RPM sensor support or not.

Shinigami · #2 (**permalink**) 05-05-2008, 01:30 PM

Hi,

I hope this answeres your questions

bgavin · #3 (**permalink**) 05-05-2008, 05:22 PM

Thanks for the chart. It is a great visual for what I already have in a spread sheet. Nice work!

But... it does not answer the question about static head pressure. Fans with a higher pressure are more capable of forcing air through dense cooling fins.

Air flow changes with the resistance of the load (fin density). A fan that moves 113 cfm in open air, may not move anywhere close to that volume when faced with an array of dense cooling fins.

On published tests, the fans that do the best in dense coolers are those with the highest static head pressure. This usually goes hand-in-hand with a thicker depth (i.e 38mm vs. 20mm).

Shinigami · #4 (**permalink**) 05-06-2008, 12:09 PM

Hi,

then you should go for 38mm fans, but if you care about silence, you can not go around the S-FLEX. I got only one chart with the S-FLEX, need to request the Documents if you need this info badly.

bgavin · #5 (**permalink**) 05-06-2008, 03:47 PM

Thanks again for the chart.

It isn't that I need the data so badly, but that the data isn't published. Most quality fans publish head pressure as part of the fan specs. Head pressure is conspicuously absent in Scythe fans.

I won't use anything other than fluid-bearing fans, so yes, I am very interested in the S-Flex head pressures. Head pressure is one of the specs I use when researching a fan and cooler combination for my new line of premium computers.

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#1 (permalink) 05-04-2008, 04:11 AM
bgavin Junior Member Join Date: May 2008 Posts: 16	Head Pressure Would Scythe engineering please post the static head pressure for the SSF21x series fans please? mm/H2O would be fine, thanks. It would also be nice to know for sure, if this line of fans has RPM sensor support or not.

#2 (permalink) 05-05-2008, 01:30 PM
Shinigami Marketing & Support Join Date: Apr 2007 Location: Hamburg Posts: 848	Hi, I hope this answeres your questions __________________ * Register and enjoy the official Scythe Forum * Compatibility List for Scythe CPU Coolers

#3 (permalink) 05-05-2008, 05:22 PM
bgavin Junior Member Join Date: May 2008 Posts: 16	Thanks for the chart. It is a great visual for what I already have in a spread sheet. Nice work! But... it does not answer the question about static head pressure. Fans with a higher pressure are more capable of forcing air through dense cooling fins. Air flow changes with the resistance of the load (fin density). A fan that moves 113 cfm in open air, may not move anywhere close to that volume when faced with an array of dense cooling fins. On published tests, the fans that do the best in dense coolers are those with the highest static head pressure. This usually goes hand-in-hand with a thicker depth (i.e 38mm vs. 20mm).

#4 (permalink) 05-06-2008, 12:09 PM
Shinigami Marketing & Support Join Date: Apr 2007 Location: Hamburg Posts: 848	Hi, then you should go for 38mm fans, but if you care about silence, you can not go around the S-FLEX. I got only one chart with the S-FLEX, need to request the Documents if you need this info badly. __________________ * Register and enjoy the official Scythe Forum * Compatibility List for Scythe CPU Coolers

#5 (permalink) 05-06-2008, 03:47 PM
bgavin Junior Member Join Date: May 2008 Posts: 16	Thanks again for the chart. It isn't that I need the data so badly, but that the data isn't published. Most quality fans publish head pressure as part of the fan specs. Head pressure is conspicuously absent in Scythe fans. I won't use anything other than fluid-bearing fans, so yes, I am very interested in the S-Flex head pressures. Head pressure is one of the specs I use when researching a fan and cooler combination for my new line of premium computers.