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PERC 5/i RAID Card: Tips and Benchmarks - Page 499

post #4981 of 7150
WOW! 498 pages on this thread! ;-)

I just made a deal for a Perc 5i w/ 512MB, BBU & cables.

I've followed some of the links listed on the first few pages of this thread, but the parts for the loop_to_screw conversion for the heatsink must have been discontinued. Just curious if anyone has a good source for one? Would be willing to pay the extra $ for a heatpipe.

THX!

JWS
post #4982 of 7150
Heatpipe equiped coolers are really a waste, and in fact are a bad idea IMO. They are (usually) too heavy for the fragile little loops on the card. Add a slightly bigger heatsink or ensure there is some airflow over the existing little heatsink, but going over the top is a good way to waste money or damage the card.
post #4983 of 7150
Quote:
Originally Posted by the_beast;12346399 
Heatpipe equiped coolers are really a waste, and in fact are a bad idea IMO. They are (usually) too heavy for the fragile little loops on the card. Add a slightly bigger heatsink or ensure there is some airflow over the existing little heatsink, but going over the top is a good way to waste money or damage the card.

I'd 2nd that opinion... not sure why people think this card requires excessive cooling. Even in the servers, they don't get that much cooling... just make sure you blow some air over the stock heatsink should be enough.
TAIPEI
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WD3000FYYZ PERC H700 w/ 512MB cache CentOS 7.2.1511 950W x2 
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TAIPEI
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post #4984 of 7150
Quote:
Originally Posted by BLinux;12347241 
not sure why people think this card requires excessive cooling.

From the 1st page of this thread:

Forced Airflow is Required
Intel thermal specifications: http://download.intel.com/design/iio...s/30663002.pdf

The Tj maximum temperature is 110C. However, do NOT run the IOP333 passively. The heatsink needs force airflow. Intel's thermal analysis used a heatsink of the same size but with more fins (hence better). However, they require a minimum of 200LFM with there heatsink. Over the surface the PERC stock heatsink, that is at least 4CFM. Do realize that if you used a 80mm fan, you would need a higher CFM rating of around 16CFM. This is assuming that the 80mm fan is next to the HS.

Bottom Line: Make sure to force air cool the PERC 5/i CPU. The card is designed for Dell servers with forced air.
post #4985 of 7150
Requiring forced airflow, and needing excessive cooling are not the same thing. Adding a large cooler is over the top and will likely break the retention mechanism on the card. Adding either a small fan in the vicinity of the card, or swapping out the heatsink for something a little larger is all that is required.

Personally I have my PERCs running with a heatsink from an old s370 cooler, that is slightly larger than the existing and about twice the height. With even the slightest airflow over the card the heatsink stays nice and warm (not hot) to the touch.
post #4986 of 7150
Quote:
Originally Posted by JSpeegle;12347454 
From the 1st page of this thread:

Forced Airflow is Required
Intel thermal specifications: http://download.intel.com/design/iio...s/30663002.pdf

The Tj maximum temperature is 110C. However, do NOT run the IOP333 passively. The heatsink needs force airflow. Intel's thermal analysis used a heatsink of the same size but with more fins (hence better). However, they require a minimum of 200LFM with there heatsink. Over the surface the PERC stock heatsink, that is at least 4CFM. Do realize that if you used a 80mm fan, you would need a higher CFM rating of around 16CFM. This is assuming that the 80mm fan is next to the HS.

Bottom Line: Make sure to force air cool the PERC 5/i CPU. The card is designed for Dell servers with forced air.

yes, you need *4CFM* of airflow... that's like someone breathing on the heatsink.... I manage several hundred Dell servers with these PERC cards, not to mention the servers in my own rack in my house. There isn't that much air flowing over the stock heatsink.... if you put your hand over the air exhausts around the PCI slots, it feels like someone breathing on your hand gently... that's all that is required, in a *server* where Dell usually over specs cooling because they never know if a customer is going to load up the server with 6 really hot PCI-E cards and 8x hard drives and some really hot X-series Xeon processors, in a rack surrounded by other servers generating a lot of heat, and the server still has to survive at least one fan failure.

if you have a case fan that is pushing or pulling air around the PCI cards, you're fine....
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TAIPEI
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AURORA
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Dual Quad-core L5430 2.66Ghz 12mb cache Intel 5000 chipset ATI ES1000 64GB FBDIMM DDR2 PC2-5300 667Mhz 
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post #4987 of 7150
post #4988 of 7150
Honestly that is not a cooler I would go for - it makes the card cover 2 slots (unlesss modded), and it really requires gluing to fit (I actually thought about using one, but even though it supports loop mounting it won't fit in the preferred orientation - the guy in that thread mounts it the 'wrong' way. If you mount the card in a tower, you need the airflow to go from across the card from the front of the chassis to the back (and out of the slots). This means in order to mount it you need to chop off some of one side of the cooler also, or it will foul the mobo. If you mount it as the guy in that thread did you are relying on airflow from the bottom of the card upwards - which can't happen naturally (as the motherboard is in the way). If you add a fan to pull air through then you might as well just have added a fan in the first place and left the stock heat sink on it.
post #4989 of 7150
Quote:
Originally Posted by the_beast;12348103 
Honestly that is not a cooler I would go for - it makes the card cover 2 slots (unlesss modded), and it really requires gluing to fit (I actually thought about using one, but even though it supports loop mounting it won't fit in the preferred orientation - the guy in that thread mounts it the 'wrong' way. If you mount the card in a tower, you need the airflow to go from across the card from the front of the chassis to the back (and out of the slots). This means in order to mount it you need to chop off some of one side of the cooler also, or it will foul the mobo. If you mount it as the guy in that thread did you are relying on airflow from the bottom of the card upwards - which can't happen naturally (as the motherboard is in the way). If you add a fan to pull air through then you might as well just have added a fan in the first place and left the stock heat sink on it.

i couldn't agree with you more today... my first thought after seeing that picture was that the heatsink is mounted the wrong way; unless he/she had air flowing from the bottom up. I'm all for DIYing stuff, but not everything you see posted on the internet is done by people who know what they are doing....

you know, if for whatever reason someone really really needs additional cooling because they decided it was a smart thing to stuff a hair dryer in their case set to full hot, then something like this mounted next to the PERC card over the heatsink of the PERC card makes more sense and only for $6:

http://www.aerocooler.com/shop.cart?action=ITEM&prod_id=FANTT2375

it moves hot air coming off the heatsink directly out the back for an extra 2.4W of power use.
TAIPEI
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AURORA
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MotherboardGraphicsRAMHard Drive
ASRock X99 Extreme11 EVGA GTX 980 Superclocked 32GB 8x4GB Corsair LPX Samsung XP941  
Hard DriveCoolingOSMonitor
Western Digital 3TB RE Noctua NH-D15 Fedora 21 Linux Samsung S27D590C 
PowerCase
Seasonic SS-1200XP Cooler Master Cosmos II 
CPUMotherboardGraphicsRAM
Dual Quad-core L5430 2.66Ghz 12mb cache Intel 5000 chipset ATI ES1000 64GB FBDIMM DDR2 PC2-5300 667Mhz 
Hard DriveOSPower
WD3000FYYZ PERC H700 w/ 512MB cache CentOS 7.2.1511 950W x2 
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TAIPEI
(10 items)
 
AURORA
(13 items)
 
 
MotherboardGraphicsRAMHard Drive
ASRock X99 Extreme11 EVGA GTX 980 Superclocked 32GB 8x4GB Corsair LPX Samsung XP941  
Hard DriveCoolingOSMonitor
Western Digital 3TB RE Noctua NH-D15 Fedora 21 Linux Samsung S27D590C 
PowerCase
Seasonic SS-1200XP Cooler Master Cosmos II 
CPUMotherboardGraphicsRAM
Dual Quad-core L5430 2.66Ghz 12mb cache Intel 5000 chipset ATI ES1000 64GB FBDIMM DDR2 PC2-5300 667Mhz 
Hard DriveOSPower
WD3000FYYZ PERC H700 w/ 512MB cache CentOS 7.2.1511 950W x2 
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Reply
post #4990 of 7150
Quote:
Originally Posted by BLinux;12347241 
I'd 2nd that opinion... not sure why people think this card requires excessive cooling. Even in the servers, they don't get that much cooling... just make sure you blow some air over the stock heatsink should be enough.

What I've done is use Arctic Silver thermal adhesive
http://www.arcticsilver.com/arctic_silver_thermal_adhesive.htm
This stuff permanently bonds to the chip. I was able to get a heatsink off before it cured completely using circuit freeze spray, but it was risky.

That said, I think it's always better to be safe than sorry when it comes to preventative measures. This card's chip runs extremely hot, and a very small amount of time and money is a small investment to protect any potential failure. The servers in which these cards originally resided had a great deal of airflow. Attaching a small heatsink isn't going to hurt the card.
Edited by binormalkilla - 2/11/11 at 1:44pm
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