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Triple crossfire - heat issues at full load - Page 2

post #11 of 17
You think you're having heat issues?

My top 5850 idles at 60c and loads at over 90c.
My bottom 5850 with its crappy cooler idles at 30c and loads at 90c
Both at 100% fan
post #12 of 17
I think your tmeps are OK now, I would use an intake on the side pannel. and move your empty HDD bay up and put the fan behind it. I wouldnt put an exhaust in the bottom of the case. you'll be fighting the flow of the 900 to much, would have to be a monster fan to do anything..if you want to mount a fan in the borrom of the case, infron of the PSU, use it as an intake fan. be warned about a side fan on the 900 case, your have to clip a corner of the fan down some to clear a CPU cooler, I had to to put in a hyper 212+ in my antec. took 5 min and a crappy hack saw to do.hope this helps
Gizmoto
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They beat me:(
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Gizmoto
(18 items)
 
They beat me:(
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Home Server V1.0
(17 items)
 
CPUMotherboardGraphicsRAM
AMD Phenom II x6 1040t @2.7Ghz ASRock 880GM-LE FX  AMD Radeon HD 4250 integrated graphics Micro Center(ADATA) 8Gb (2x4) 1333 
Hard DriveHard DriveHard DriveHard Drive
Western Digital Caviar Blue 640Gb Samsung SpinPoint F4 2Tb Seagate Barracuda 7200.9 ST3500641AS-RK 500Gb Seagate Barracuda 7200.9 ST3500641AS-RK 500Gb 
Optical DriveOptical DriveCoolingOS
ASUS 24X DVD Burner ASUS 24X DVD Burner Stock AMD Cooler Windows 7 Home Premium 64 bit 
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Linux Mint (VM) Linux Ubuntu (VM) Inland ILG-500R2 500w PSU DiabloTek Evo Mid-tower Case 
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post #13 of 17
Thread Starter 
Update, one of my 5850s had to be RMAed for a busted fan (I wouldn't have RMAed it if I knew they are no longer in production) so I am only running a crossfire setup but I will switch soon enough to a triple crossfire 5870 setup. The big difference with that is I will be using reference/blower designed cards.

Here is also my answer to the heat issue:

- Scythe 120MM 38MM 133 CFM fan in intake port (it would not fit so I ziptied it to the drive bay and to the intake port)
- Scythe 120MM 25MM 110CFM fan in the side panel door (corner clipped to fit CPU cooler)
- Cooler Master 120MM 79CFM over VRMs
- Scythe Master Ace fan controller

How it looks:





- I was able to drop temps by 9-13C over AN OPEN CASE setup. I am also able to drop my GPU fan by about 10% on the bottom one. This is about onpar as using the household fan but much quieter and less open to people accidentally turning off your cooling setup, lol.

When I get my three 5870s, I will update thread in how they operate then.
post #14 of 17
200mm fan strapped on ?
post #15 of 17
Thread Starter 
Quote:
Originally Posted by SpeedNuggeT View Post
200mm fan strapped on ?
The one in the picture? No, that is a 120MM strapped on. I have a 140MM Silverstone Air Penetrator I couldn't fit because it interfered with the side intake with the side panel on so I had to settle on a 120MM.
post #16 of 17
Quote:
Originally Posted by Asad_A203 View Post
Thanks for the input guys, I appreciate it. I decided to just put a household fan with the side panel off to cool the cards right now. Here is the new full load temps:

Top: 83C @ 89% Fan (Slight OC to 825Mhz and downclock Memory to 975)
Middle: 81C @ 90% Fan (Stock)
Bottom (right above power supply which is acting as an exhaust): 64C @ 80% Fan speed (Slight OC to 850Mhz)

^ Fairly decent improvment over stock. The only other thing I have is a Cooler Master 120MM fan (the one that was my intake) acting as an intake directly over the back of the video cards.

Do you guys think these temps are alright for 24/7/365 operation? In any case, here is my new plan of attack (I also want to avoid modding my Antec 902 if possible) to try and cool these cards with the side panel ON:

1. Replace TIM with ICD 24K on all GPUs
2. Move my empty hard drive bay up one slot so it is exactly level with the three graphic cards and add this fan at the end of the bay as an intake:
http://ncix.com/products/?sku=38379&...facture=Noctua
^It moves 100CFM of air and is quiet (I love Noctua too, lol) so I am sold on it.
3. Place this fan directly ontop of the video card array so hot air does not settle around the video cards:
http://ncix.com/products/?sku=45800&...facture=Noctua
^110CFM
4. Another Noctua NF-S12B-FLX as an intake on the side panel
5. Laying my Cooler Master 120MM on the bottom of the case as an exhaust


All of this while the side panel is ON. Do you guys think this is going to get me similar temperatures to my current open case setup with the household fan on?

I am also wondering if a Noctua fan that is sitting in the intake bay pulling in 100CFM worth of air while the Antec fan at the front of the case can only pull in 39-50 CFM may be a waste. But I think the fact that the heat is being moved around should help out. Also, since the side panel is only pulling in 100CFM of air and can only accomodate a 120MM fan (I already have issues fitting it with my Noctua CPU cooler), will having the 140MM fan sitting ontop of the video card array help? I may try removing the plastic piece on the side panel of the Antec 902 and try placing the 140MM there instead.

Thanks again guys!
just to say...noctua doesnt move 100 and 110 CFM..it moves 100 and 110m3

thats about 50-60CFM
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My System
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Hard DriveOSMonitorPower
samsung 1TB, WD 640 green win 7 64bit samsung xl2370 seasonic x650 gold 
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Silverstone Raven 2 evolution Cyborg R.A.T 5 Roccat TAITO 
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post #17 of 17
Thread Starter 
Quote:
Originally Posted by hawkeeyee View Post
just to say...noctua doesnt move 100 and 110 CFM..it moves 100 and 110m3

thats about 50-60CFM
Yeah, I realised that afterwards when reading the reviews on them .

That is why I went with Scythe and surprisingly, they aren't that loud (even the Ultra Kaze). Granted, I think I may be deaf from having no case and my video cards humming away at their ridiculous noise .
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