Scythe Infinity stock 46.5cfm vs TT 81cfm vs Delta 190cfm results

I decided to use my power hungry 955XE cpu rated at 130 watts for testing some power supplies I have been sent. But since, i'm planning to take apart my water cooling setup for a clean etc, I will go back to air cooling for cpu for the time being.

I'm going to use a Scythe Infinity heatsink which arrived today. I'll play with 3 fan configurations

1. Stock 120x25mm 46.5cfm 0.13amp fan
2. Thermaltake 120x25mm 81cfm 0.40amp fan http://www.thermaltake.com/product/D...2003/a2003.asp
3. Delta 120x38mm 190cfm 3.0amp fan - http://www.xtremesystems.org/forums/...77#post1779677

Notes:
I noticed in most pics and reviews the fan is positioned dead center of the fins with part of the fan blowing up the top of heatsink as in pic at http://www.scythe-usa.com/product/cp...1000-main.html

I have the fan so it's situated with part of fan blowing at bottom of heatsink so it cools mosfets too http://i4memory.com/reviewimages/coo...rmaltake81cfm/ :)

http://i4memory.com/reviewimages/coo...infinity01.jpg http://i4memory.com/reviewimages/coo...infinity05.jpg

http://i4memory.com/reviewimages/coo...infinity08.jpg

System:

• Pentium D 3.46Ghz 955XE Extreme Edition (130W)
• Scythe Infinity with stock 46cfm fan (change to 120x38mm Delta 190cfm 3AMP fan later)
• Intel D975XBX Bad Axe rev304 1334 bios
• 128MB Gainward FX5200 PCI card (initial tests - change to higher end cards later)
• 3x 320GB Seagate 7200.10 SATAII hdds
• Pioneer DVD-RW Burner
• 1.44MB FDD
• 850W special psu ;)

Just doing initial temp tests since the Scythe Infinity only arrived today and first time using this heatsink.

http://i4memory.com/reviewimages/coo...1cfm/graph.png

955XE @13x266fsb = 3460Mhz stock speeds at 1.275v bios vcore (1.23v bios)

Scythe Infinity with stock 120x25mm 46.5cfm 0.13AMP fan

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 55-57C => 45-47C
System Zone 1 idle = 34C => 35C
System Zone 2 idle = 31C => 32C

Intel Desktop Utilities value (windows)
CPU load = 63-64C
System Zone 1 load = 41C
System Zone 2 load = 34C

Room temp = 27.8C

Idle
http://fileshosts.com/intel/Intel975...1/cpu_idle.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...me_load_tn.jpg

Scythe Infinity with 120x25mm Thermaltake 81cfm 0.40AMP fan

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 53-54C => 42C
System Zone 1 idle = 33C => 33C
System Zone 2 idle = 31C => 31C

Intel Desktop Utilities value (windows)
CPU load = 57-58C
System Zone 1 load = 36-37C
System Zone 2 load = 32-33C

Room temp = 26.8C

Idle
http://fileshosts.com/intel/Intel975...1/cpu_idle.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg

For those Core 2 Duo folks wondering, a 955XE @ stock 3460Mhz at 1.275v rated at 130 watts theorectically has more heat output (in terms of wattage) than a Core 2 Duo E6600 @3809Mhz at 1.511v!

Very thorough testing, as always.:thumbsup:

So the Infinity and TT are about equal when the same fan is used. Is your 12v rail really at 12.8v?

I'm gonna do DMM measurements on psu a bit later to find out :)

But i did try TT Big Typhoon with 190cfm delta but was 20-25C hotter at idle and load with 955XE.. i.e. 88C load temps... but I think got bad mount heh.

I have several 152 CFM Delta's. I love them. When you need to push a lot of air, nothing beats the Delta's.

I know that the Bad Axe's CPU fan header is rated for 3.0A. Is it safe to use it with something like a 2.0A Delta fan (assuming the fan draws under 3.0A when it starts)?

Delta 190cfm fan is 4pin molex powered with 3pin rpm monitoring cable so no power draw from mb direct :)

955XE @15x266fsb = 4000Mhz stock speeds at 1.475v bios vcore (1.418v bios)

Scythe Infinity with 120x25mm Thermaltake 81cfm 0.40AMP fan

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 71C => 49C
System Zone 1 idle = 38C => 33C
System Zone 2 idle = 32C => 31C

Intel Desktop Utilities value (windows)
CPU load = 77-79C
System Zone 1 load = 41-42C
System Zone 2 load = 32-34C

Room temp = 25.6C

Idle
http://fileshosts.com/intel/Intel975...pu_idle_tn.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg

955XE @4000Mhz at 1.418v = ~200 watts

vs

E6700 @4605Mhz at 1.66v = ~197 watts





955XE @16x266fsb = 4266Mhz stock speeds at 1.5v bios vcore (1.441v bios)

Scythe Infinity with 120x25mm Thermaltake 81cfm 0.40AMP fan

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 74C => 51C
System Zone 1 idle = 39C => 34C
System Zone 2 idle = 31C => 31C

Intel Desktop Utilities value (windows)
CPU load = 79-80C
System Zone 1 load = 41-42C
System Zone 2 load = 32-33C

Room temp = 25.4C

Idle
http://fileshosts.com/intel/Intel975...pu_idle_tn.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg

955XE @4266Mhz at 1.441v = ~220 watts

MUCHO just posted a link in the Deal section for this cooler for $40US. Has anyone tried a push/pull arrangement with 2 120mm fans?

Ooooo, very nice George. How will you be mounting the Delta? I haven't figured out a good way to mount a 38mm thick fan on it yet :(

Also, what other HSFs do you have planned? :)

not much into air these days.. once i clean up and rebuild my water cooling loops.. it's back to H20 for Aussie summer time = bloody hot :D

Gonna use zip ties most likely for 38mm thick fans :)

Time to test 120x38mm Delta 190cfm 3.0amp fan. Mounting done by trusty zip ties as pictured here. :)

http://i4memory.com/reviewimages/coo...finity_003.jpg http://i4memory.com/reviewimages/coo...finity_005.jpg http://i4memory.com/reviewimages/coo...finity_008.jpg http://i4memory.com/reviewimages/coo...nfinity_01.jpg

Scythe Infinity with 120x38mm Delta 190cfm 3.0amp fan

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 50-52C => 41C
System Zone 1 idle = 33-35C => 34C
System Zone 2 idle = 29-31C => 31C

Intel Desktop Utilities value (windows)
CPU load = 55-56C
System Zone 1 load = 37-38C
System Zone 2 load = 32-33C

Room temp = 26.8C

Idle
http://fileshosts.com/intel/Intel975...pu_idle_tn.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg

955XE @ stock 3466Mhz at 1.275v quad stressprime load compare between

Scythe stock 120x25mm 46.5cfm fan
vs
Thermaltake 120x25mm 81cfm fan
vs
Delta 120x38mm 190cfm fan

http://i4memory.com/reviewimages/coo...h_compared.png

I believe the system temps are higher on Delta due to the fan being more focused air flow being in the centre versus the TT 81cfm fan having a more even air flow which would help the mosfets under the Scythe Infinity heatsink.

Great work eva2000! Thanks for all the info.

You wouldn't happen to have a panflo L1 or M1, or a Sanyo Denki to add to the testing list? It'd be interesting to see how a fan with similar cfm and noise characteristics (to a 25mm thick fan), but a much higher pressure curve, would do.


navig

only have this Panaflo fan FBA12G12H 120x38mm 103.8CFM at 41.5dBA http://www.pccasegear.com.au/prod788.htm

Quote:

---

Originally Posted by eva2000

only have this Panaflo fan FBA12G12H 120x38mm 103.8CFM at 41.5dBA http://www.pccasegear.com.au/prod788.htm

---

i have the same one mounted to my infinity right now.

================================================== ============
955XE @16x266fsb = 4266Mhz at 1.5v bios vcore (1.441v bios)

Scythe Infinity with 120x38mm Delta 190cfm 3.0amp fan

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 72C => 51C
System Zone 1 idle = 39C => 36C
System Zone 2 idle = 33C => 33C

Intel Desktop Utilities value (windows)
CPU load = 78-79C
System Zone 1 load = 45-46C
System Zone 2 load = 35-36C

Room temp = 26.8C

Idle
http://fileshosts.com/intel/Intel975...pu_idle_tn.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg

955XE @16x266fsb = 4266Mhz at 1.5v bios vcore (1.441v bios)


Thermaltake 120x25mm 81cfm fan
vs
Delta 120x38mm 190cfm fan

http://i4memory.com/reviewimages/coo...h_compared.png

Thanks for the testing! :)
So can we say it really helps for the Infinity to replace the fan with something with a higher cfm, for example ~80cfm instead of the stock, but much higher, like 190cfm for example, won't help much extra?
So putting a bit heavier fan on it will help, but it's pretty much useless to put one of them leafblower noise-makers on it :P.

All depends on air pressure too 81cfm TT 120x25mm fan has 4.7mmH20 air pressure and that's more than my Panaflo 120x38mm 103cfm fans!

Now how do 2x 120x25mm Thermaltake 81cfm fans in push-pull config do ? :)

http://i4memory.com/reviewimages/coo...finity_001.jpg http://i4memory.com/reviewimages/coo...finity_005.jpg http://i4memory.com/reviewimages/coo...finity_014.jpg http://i4memory.com/reviewimages/coo...finity_017.jpg

Scythe Infinity with 2x 120x25mm Thermaltake 81cfm 0.40AMP fans push-pull config

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 51-52C => 40-41C
System Zone 1 idle = 33C => 34C
System Zone 2 idle = 30-31C => 31C

Intel Desktop Utilities value (windows)
CPU load = 55-57C
System Zone 1 load = 37-39C
System Zone 2 load = 32-34C

Room temp = 26.1C

Idle
http://fileshosts.com/intel/Intel975...pu_idle_tn.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg

http://i4memory.com/reviewimages/coo...ed_4config.png

Amazing feat for a 3.46Ghz 955XE Extreme Edition cpu to be quad stressprime 1+hr stable @4399Mhz at 1.476v vcore (bios) - maybe this special psu also had something to do with it ? ;) :D

http://i4memory.com/reviewimages/coo...finity_001.jpg http://i4memory.com/reviewimages/coo...finity_005.jpg http://i4memory.com/reviewimages/coo...finity_014.jpg

http://fileshosts.com/intel/Intel975...5-2.1/cpuz.png

Scythe Infinity with 2x 120x25mm Thermaltake 81cfm 0.40AMP fans push-pull config

Bios value => Intel Desktop Utilities value (windows)
CPU idle = 79-80C => 55-56C
System Zone 1 idle = 38C => 35C
System Zone 2 idle = 31C => 31C

Intel Desktop Utilities value (windows)
CPU load = 79-81C
System Zone 1 load = 38-40C
System Zone 2 load = 31C

Room temp = 26.8C

Idle
http://fileshosts.com/intel/Intel975...pu_idle_tn.png

Load (click image for larger image)
http://fileshosts.com/intel/Intel975...e_load_tnn.jpg