Evercool PCAC - Graphing the Delta Changes

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Let's have a look at the graph now to observe the delta changes across incremental speed settings on the PCAC at idle.

This graph brings up a couple of interesting peculiarities. The most significant is the 3 degree jump we see on S2 (upper case temp). We can make an informed guess that the PCAC is changing the overall airflow of the case and pulling warm air away from the CPU and over S2. With the PCAC turned completely off, we have consistent airflow from the bottom front of the case, across the motherboard and CPU, and out the rear of the case via the two exhaust fans and PSU.

Temperatures changes in S2 aren't necessarily indicative of overall temperature change though, as we have just identified. We also see a drop on S1 and S3 of approximately one degree. The PCAC has increased the amount of airflow through the case and is now pulling more cool air in, as well as taking away some of the heat generated by the CPU. While this is looks fairly positive so far, the system is idling and not generating very much heat. Now we are going to kick it into action with some heavy burnK7 and stress abuse. Firing up a single burnK7 process and a series of stress processes working I/O, memory, and hard drive access we see temps plateau about one degree higher overall than at idle. We already have pretty decent airflow in this case without the PCAC and we can see this by its ability to handle the huge amount of load we are enacting on the system.

Now we'll see what happens when we add the PCAC to the mix. Have a look at the individual deltas below and then we will review the graph. 

Delta T @ Load
PCAC Spd	S1	S2	S3
Off	9.4	7.2	3.1
Low	10.2	12.1	2.4
Med	10.1	12.2	2.1
High	10	12.6	2
S1: Rear middle | S2: Upper middle | S3: Bottom

Next: A Different Scenario >>
 

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