Okay the quad has been returned to jr.com for a replacement. Since they sold it to me and I buy a lot from them they honored the 30 return policy. Even sent a free ups ground label. In the meantime I have a 2.5 dual core base model on hand. I decided to run the prime95 cpu torture test on this machine . Running all 4 cores and passing my temps are much lower then the quad. the machine stays maxed at 100% the temps are not bad 172f the fan is at 3335rpm. this machine may be far more durable then the quad due to heat. look at my setup photo as you can see the room temp is 82f yet this machine is fine after more then 1 hour of prime95 torture test. I can tell you that for my use I will end up with duals over quads oh I will test the new quad when it comes but I am liking 175f with a 3343rpm fan for the dual a lot more then 216f with a 5500 rpm fan for the quad. Now my quad or my mobo had an issue but the new one will run hot and loud under load I just hope it runs without errors. So far this dual has not had a black screen. On one last thing I finally got the memtest86 + to work the quad passed it here is a blue screen of the quads ram test. it ran for 8 hrs plus no errors for the ram. look how fast the cpu is. L1 cache is 76494 MB/s L2 cache is 34770 MB/s L3 Cache is 26077 MB/s The ddr3 ram is 16047 MB/s The fastest ssd is only 550MB/s I ran a 7 hour long prime95 test the base model 2.5 mini passed never got higher then 180f and the fans never went higher then 3343 rpm. base dual core i.5 passed first test with 4gb stock ram I am now running an 8gb ram kingston same ram that was in the quad. testing the cpu with prime 95 and standard fan program. so far 12 minutes in temps are 199 and fan is 2100rpm as apple tends to be gentle on the fans speed for sound over temp. I will run this test with 8gb then 16gb ram. I Hope it passes all of them. the second test is being run with apple's fan program and the temps are higher 203f vs 180f but the fan speeds are lower 2146 via apple and 3343 via my setting for the lessor ram/prime95 test. So good cooling is possible I would feel better running machine under 200f with fan speed at 2500 or 2800. then over @201- 204 with fan at 2111rpm. So far cooling the base model is easy. If you don't need a killer cpu the base model will be quiet and cool. Just slower on tasks like hand brake.