Aftermarket heatsink/fan reduces Core 2 Duo overclock temperatures

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I replaced the stock Intel boxed, retail heatsink/fan on my EVGA 680i
motherboard / Intel E4300 system with a ThermalTake TMG i1 heatsink/fan with
heatpipes.  This relatively inexpensive heatsink/heatpipe/fan solution (~$30
US) gives:

** 53 C CPU temperature (Orthos 'Small FFTs / TAT) at 1.2500 volts
/ 2700 MHz  @ 27 C ambient)

** 68 C CPU temperature (Orthos 'Small FFTs / TAT) at 1.388 volts
/ 2925 MHz (68 C @ 27 C ambient)

**  66 C CPU temperature (Orthos 'Small FFTs / TAT) at 1.350 volts / 2925
MHz @ 27 C ambient

**  44 C CPU temperature (idle) at 1.450 volts / 3150 MHz @ 27 C ambient

**  72 C CPU temperature (Orthos 'Small FFTs / TAT) at 1.450 volts / 3150
MHz @ 27 C ambient

The 53 C CPU temperature (Orthos 'Small FFTs / TAT) at 1.250 volts / 2700
MHz @ 27 C ambient is 5 to 8 degrees C LOWER than with the Intel stock
retail, boxed heatsink/fan.

The factory default voltage for this particular E4300 is 1.325 volts.

The shape an fan arrangement for the ThermalTake TMG i1 is well suited to
the layout of the EVGA 680i motherboard (and other 680i motherboards,
certainly the reference design boards.)  Eight heatpipes connect the bottom
copper block to a stack of horizontal fins.  Top of the stack (if you
include the protruding nubs of the heatpipes) is ~ 5.5 inches above the
motherboard.  The fan is mounted vertically at the back of the stack (the
side toward the drive and PS connectors) and pushes air through the stack.
The front side of the stack faces the case fans mounted in the rear panel.
There is about 1 inch of clearance beneath the fin stack in which the foot
print is only the size of the CPU socket plus the push pins.  The stack
(with fan) is about 5 inches along the air flow axis and 3.75 inches wide.
The air flow is such that the hot exhaust out of the fins exits directly
into the rear case fans, and completely misses the NorthBridge heatsink/fan
as well as the memory.
This is NOT the case with the Intel supplied heatsink fan which exhausts hot
air into the area occupied by the memory, NorthBridge heatsink/fan, the back
of the #1 PCI-E video card, and everything else around the periphery of the
Intel heatsink.

I am very pleased.

Phil Weldon

Re: Aftermarket heatsink/fan reduces Core 2 Duo overclock temperatures

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    That is a very good improvement. Have you tried to lower your 1.45v
@ 3150mhz to see if it may be stable and possibly get your CPU temps
down a bit? That would give you a great OC for the E4300. Even at 72c,
if that is the absolute max temp, isn't bad at all if it stays stable.
Orthos with small FFTs seems to stress my E6600 more than anything I do
including A/V rendering and much more than 3DMark 06 or any
gaming/simulation. I would doubt that you would ever see 72c with any
apps you might run in normal usage. I am really interested in seeing how
your CPU will OC with liquid cooling. Are you still thinking about doing
    I found that after running my system a few weeks that my temps
gradually creeped down and I had to add a couple of ounces of coolant. I
may have had a little bit of air that may have been in the system that
gradually worked it's way out. I am going to install the Striker Extreme
that Asus sent me to replace the P5N32-E-SLI that the SATA contoller
died on. We had company over the weekend so I didn't have any time to do
it. I am not sure I like all the bells and whistles of the Striker, but
I will give it a go.


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