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post #21 of 30
my MSI GTX 570 was idling exactly at around 70c. I'm glad I found this thread because you guys mentioned the dual monitor setup. I now moved my other other monitor to my 8400 GS (current setup: GTX570 single monitor, 8400 dual monitor) and my idle temp on the 570 instantly drops to 53c (ambient at 27c)! Thanks for the power saving tip!
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post #22 of 30
Quote:
Originally Posted by PenguinPIE View Post
my MSI GTX 570 was idling exactly at around 70c. I'm glad I found this thread because you guys mentioned the dual monitor setup. I now moved my other other monitor to my 8400 GS (current setup: GTX570 single monitor, 8400 dual monitor) and my idle temp on the 570 instantly drops to 53c (ambient at 27c)! Thanks for the power saving tip!
Which brand and model is your GTX570?
Idle temp of 53C (ambient 27C) is still high, IMHO. I think you can further cut down on this by:-
a. using a custom fan profile
Use MSI Afterburner utility to setup a custom fan profile (eg 1%:1C, ie the fan spins at 53% at 53C)
b. improving on air circulation inside and outside of your Thermaltake Kandalf. If you can post a pic of the case interior, many of us can offer air movement improvement suggestions.

(My reference cooling GTX570 @782/2000 idles at 39C with ambient 27C. But it sits on an Open Bench though)
post #23 of 30
It is MSI brand, here are some shots of the case:





I don't think the air flow is a problem for my setup. There are 2 120mm intake and 1 120mm and 1 92mm exhaust fan (all Noctua except for the 1 intake at the bottom).

Do people usually get lower temps with the reference cooler without modifying the fan profile?
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post #24 of 30
Quote:
Originally Posted by PenguinPIE View Post
It is MSI brand, here are some shots of the case:

I don't think the air flow is a problem for my setup. There are 2 120mm intake and 1 120mm and 1 92mm exhaust fan (all Noctua except for the 1 intake at the bottom).

Do people usually get lower temps with the reference cooler without modifying the fan profile?
Judging from the pictures, the front lower case 120mm fan is the primary intake fan to supply ambient air to the GTX570. There are 2 not-so-desirables:
1. There are 2 harddisks blocking the airflow. Their presence will cut down the airflow velocity
2. The harddisks will be cooled by the incoming airflow but the air will be warmed up before entering the intake fan of the GTX570.


To improve, I suggest:- (see pic below)
a. Moving the 2 harddisks up to the middle HDD cage. This move (blue circle) will eliminate both issues.
b. If the 2 harddisks remain at the present location, provide an additional fan right in between the harddisks and the graphics card. Eg, use an Antec Spot Cool (orange thing in pic) or use zip ties to fix a 120mm fan there. This step will only take care of issue 1.

I think, most if not all users of GTX570/580 would setup custom fan profile to help lowering the temp. This is, of course, a tradeoff between temperature vs acoustics. So, suit yourself.
post #25 of 30
Thanks for the tip. I have relocated the hard disks so there is nothing in the way of the bottom fan. It now idles at around 48c to 49c and my room is at 24c. Sounds like it should be idling cooler than that? I have been running all case fans at the lowest speed via fan control, not sure if that makes such big differences compare to your temps.
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post #26 of 30
Quote:
Originally Posted by PenguinPIE View Post
Thanks for the tip. I have relocated the hard disks so there is nothing in the way of the bottom fan. It now idles at around 48c to 49c and my room is at 24c. Sounds like it should be idling cooler than that? I have been running all case fans at the lowest speed via fan control, not sure if that makes such big differences compare to your temps.
I'm running a Gigabyte GTX570 OC'ed pretty heavily. I am, however, not using stock cooling. I have after market 3 fan cooling. My ambient temp here at the moment is about 20c (heh, and it's winter) and my idle is 34c and under full load I hit 70c.

My case is the CM Storm Enforcer, I have a 200mm fan running silent under Qfan control at the front, and all the air goes through 4 tightly knitted hard-drives before it even enters the open area of the case.
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post #27 of 30
Quote:
Originally Posted by PenguinPIE View Post
Thanks for the tip. I have relocated the hard disks so there is nothing in the way of the bottom fan. It now idles at around 48c to 49c and my room is at 24c. Sounds like it should be idling cooler than that? I have been running all case fans at the lowest speed via fan control, not sure if that makes such big differences compare to your temps.
As you mention the bolded part above, I now see 2 areas of attention:-

1) Insufficient fresh ambient air
Thermaltake website does not list the CFM figure for this blue LED 120mm fan but I think it should be around 50 CFM at the max 1300rpm.

Frankly, even at this full speed, the 50CFM is not much, IMHO. And since you are using a fan controller to further take the speed down to the lowest possible rpm, I can imagine the GTX570 is starving for fresh air.

Remedy:- spin up this fan to its full 1300rpm. I think this is the least that you owe your GTX570.

(The Kandalf is designed to favour quietness over high airflow. So, watercooling or even fanless system is its main strength. This is why it has so few fans and at such low spinning speed.)

2) Hot air from 8400GS being recirculated
The single slot 8400GS' cooling design does not expel hot air out of the case and so I expect a good portion of the hot exhaust is being recirculated by the GTX570 above and by itself.

Remedy:- Your pic does not allow me to have good clean look at that area but I think the 8400GS is sitting on a (light blue) PCI slot?
If yes, then there is the 7th slot empty which can be used as an escape route for the card's hot exhaust.
-The basic and passive step is to remove that slot cover so that hot air might escape naturally.
-A stronger and active step is to add a PCI slot fan to extract hot air out. Note that this fan should be as short as possible so as to avoid air competition with the card's fan.

Thermaltake A2375 'long' PCI slot fan: (not preferred)
http://www.aerocooler.com/shop.cart?...d_id=FANTT2375

Thermaltake A2426 'short' PCI slot fan: (preferred)
http://www.tigerdirect.com/applicati...6736&CatId=804


I hope that with these 2 measures taken, your GTX570 will idle at around mid-40's (24C ambient).
post #28 of 30
Thanks for your feedback!

I have actually replaced the blue LED fan with another noctua while relocating the disks. I will crank up the fan tomorrow and see if it makes any noticeable differences.

The 8400GS is actually sitting at the very bottom (under my sound card) and it is a passively cooled version. I prefer that it to run as quietly as possible so I don't think I'll add any more fans to it.

However, I wonder if I should reapply the thermal compound to the 570. I remember my 8800GTX had way too much on the chip from the factory..
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post #29 of 30
I noticed that the temperature drops to 46c (ambient 22-23c) today with the front fan running at full speed. But I think I'll stick with the lowest fan speed because I prefer the silence over the 4c drop. Thanks for the advice though! I'm sure the air flow is better than ever now that the hard disks are not in the way.
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post #30 of 30
Quote:
Originally Posted by compuman145 View Post
God damn, 800C is hot.
I'd be scared to touch 100C at that. 800C would melt my dang bones xD
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