How much reduction in temperature have you noticed in the system, CPU(s), Graphics card and Hard Drives since you added the extra two fans? Is there a great deal more noise? I imagine because of the positive pressure, you would have less dust build up over time inside the case. Mine came with two real fans and two dummy fans in the space between the backplane and the central compartment. I have looked for the part number for the drop in fans and they are not common or cheap. Seems like they range in price from $15 to $30 or more dollars for each unit, but I start questioning companies that are substantially less than the competition. Most are not in stock and are special order. All I actually need I think is two the SAN 80 fans, but I cannot find that same exact model anywhere I look. Must be a vendor thing.
I am thinking of just getting a couple 80x80x25 fans that use the same amperage, have the same speed, cfm, and db ratings. I wrote to the manufacturer and they did not have the SKU in their database for the actual fan itself, but one very similar. Strange seeing as how they made the fan. All of the specs seemed the same, and tech support said they did not see any reason that they would not work.
I imagine I would just have to press the fan into the two housings and correctly position the 4 pins. Perhaps I will look around locally for similar fans. Being that this is designed as a DP server chassis, and it is the SQ (Super Quiet) model, maybe I won't even need them. What was your overall impression of two versus the four fans? The CPU Heatsinks have fans on the front of them blowing toward the rear, the Power supply blows the hot air out the back, and then there is a 92mm exhaust fan on the rear of the case, so I wonder if I really need a fan behind it. On the other hand, filling up the other socket and the extra 6 memory modules, maybe I should, but the cheap part of me keeps on thinking that they wouldn't have put only two fans in there if they were not adequate.
I think I will just carry one of my dummy fan holders to Micro Center and see if I can find a fan that would work. A) Would you have paid for the fans if they charged you for them, and B) How much would you be willing to pay? The System usually stays below 40°C, as does the processor (well technically Low), and never gets above 60-62° when running Prime 95 with all 12 threads running at 100% in Task Manager. The Hard drives stay in the 34-37° with low disk I/O, although they have gotten to 55° (at their their stated limit) when we had an air conditioner that quit working and it was 85°+ in the room. I keep my case in immaculate condition<dust=the devil>.
My graphics card stays low at idle, around 40° as well. Basically with the ambient air temp around 72-74°F (22°C), everything usually stays at or near 40°C, except the power supply, which tends to run a little warmer say 50-53°C at idle, and in the mid to upper 50s at high load. I wish I could get that down a bit more, but with fans that run at 572-687 RPM, and a power supply with 865 watts, nothing but another fan right behind it will help. Speed Fan doesn't seem to be able to control my power supply fans. This is even with the fan setting in BIOS at the High Performance level. Maybe I have just answered my own question.
Percentage wise, how much above the normal Newegg selling price did they charge you? As I said, I paid 350 for a board that normally sells for 450. Should I expect to have a $600 hold on my CC? I have the money I just hate to have it tied up. I also have a hard drive that MegaRAID Storage Manager says might be going out, so I am going to have to RMA it the same way. I just don't want a combined $1,000 hold on my account. These are the errors and information that it gives me, and if anyone knows what those error messages mean, let me know.
2960 [Information, 0] 33seconds from reboot Controller ID: 0 Unexpected sense: PD
= --:--:2 - Failure prediction threshold exceeded, CDB = 0x03 0x00 0x00 0x00 0x40 0x00 , Sense = 0x70 0x00 0x00 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00 0x00 0x5d 0x00 0x10 0x00 0x00 0x00
2959 [Warning, 1] 33seconds from reboot Controller ID: 0 PD Predictive failure:
--:--:2
Most things seem fine, but the read/write times are down from the glorious levels that they once were at, look at the comparison:
8 Months ago when brand new:
Random Access: 5.5ms, CPU utilization 1%, Average Read 347.8MB/s, Burst Speed 855.5 MB/s.
Not too bad for a rotating hard drive array consisting of three disks in a RAID-5 setup if I do say so myself.
Today:
Random Access: 5.6ms, CPU utilization 2%, Average Read 313.4MB/s, Burst Speed 473.6 MB/s.
Obviously I am most worried about the burst speed. It is off by 55%.
Seeing as how The LSI 9260-4i MegaRAID controller card has 512 MB onboard cache, set to predictive read ahead, it is making me wonder about the card itself. No, I can try and fool myself all I want, but I should RMA that hard drive maybe I should see if there is a way to transfer the data from the supposed failing disk to the hot spare, without having to remove the bad one and rebuild the array as if it had failed. Do you have any advice about this? I know I should have started a new topic for this, but just too lazy.
With the hot spare in there, maybe I should just let it go until and if it fails. The array has three partitions, ant the total combined usage is almost exactly 50%, but I keep my hard drives well cleaned of junk and defragged. I did not notice the slowdowns as much with my old first generation 36GB Raptors on my last PC, but I do not know if using 50% of the hard drive should slow down peak performance by half in SAS drives (which kill Raptor and Velociraptors by the way). I wonder if frequent defragmenting the hard drives could be causing the disk failure? With my old Raptors, they are basically the same as when new 5-6 years ago.
While I am at it, I have an APC 950VA battery backup. In the powerchute software, it says that I am using about 170 watts at idle, With Prime 95 running, Supero Doctor 3 reports CPU1 Medium , system to 44C, power to 60C. APC Powerchute goes from 170 at idle to 286 Watts when Prime 95 is running, and it says that it is not recommended that you connect more equipment to your battery backup, even though the bar goes to 540 Watts, which I assume is the most it can put out. I suppose it does not like it when you go over 50% of the available wattage. With another processor, that will be 286+95= 381 watts. The software says that the Estimated Battery Time is 13 minutes, which in reality is probably less than 10, based on my experience. Various other prograss read the sensors at up to 67° on the CPU, and while not catastrophic, certainly more than I want. I guess I need the fans.
I imagine with the extra RAM installed we might be looking at over 400 watts. When I RMA the bad drive, I am going to add the new one to the array, for a total of four 15k.7 SAS hard drives in a RAID-5 array. I wonder what size power unit I need. Will a 1500VA unit do it, or am I looking at 2,000+? I have always used APC, Do you have any input on the cheaper brands out there?
Sorry for such a long post. Please feel free to answer any or all of my questions.