It is currently Fri Jul 25, 2014 7:58 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: Accelero S1 in a slim MATX case
PostPosted: Tue May 03, 2011 6:06 pm 
Offline

Joined: Tue May 03, 2011 5:52 pm
Posts: 58
Location: Toronto
I'm new here but post a bit on anandtech. I experimented with passively cooling a low profile HD 5750 in an NSK1480. This required bending the heatsink significantly, but with a bit of effort, it fits, although it is now a quad-slot video card. Generally it works well. I'm having some issues with blue screens which I think are caused by overheating (in a dual display config with the Intel HD 2000 IGP, only the Radeon display shuts off while the IGP display displays whatever was showing before, and then the computer resets after another 10-15 seconds).

The weird part is that the AMD utility is showing very acceptable GPU temps of around 75-80C at load; with the stock cooler I was hitting 95C without crashing. Also, the two exhaust fans (Noctua + S-flex in pics, 2 Noctuas now) make a difference. If I run them at 900rpm and stock GPU, I get no crashes. Overclocked, I need to run at 1300rpm to not crash. Either way, the GPU temp readings are good so I'm thinking it's either the memory or voltage control.

Any suggestions which? Am I being greedy? :D

Image

Image

Image

_________________
Lone Industries L1: i7 3770, 2x4GB Mushkin Silverline, 160GB X25-M G2, Dell U2412M + U2211H
Lian-Li A04: i5 2400, 2x4GB Mushkin Silverline, 80GB X25-M G1, 9TB FlexRAID, 1GB 5750 (passive), all on Seasonic x460, hooked up to Sony 40" EX620 + KEF 2005.3 + Yamaha RX-V667


Top
 Profile  
 
 Post subject: Re: Accelero S1 in a slim MATX case
PostPosted: Wed May 04, 2011 3:57 am 
Offline

Joined: Sat Dec 01, 2007 4:25 am
Posts: 160
I don't know exactly what is overheating, but that's some pretty impressive bending. : )

It does seem like it might be a bit tight below the card though, potentially creating a pocket of warm air. Have you tried removing one or both of the unused PCI slot covers to improve air circulation down there? If that seems to work, you could optionally add mesh slot covers in their place.


Top
 Profile  
 
 Post subject: Re: Accelero S1 in a slim MATX case
PostPosted: Wed May 04, 2011 4:31 am 
Offline

Joined: Mon Jan 11, 2010 8:19 am
Posts: 400
Location: Boston, MA, USA
WOW.

Nice. Did you do that free-hand? Did you bend it around something? Which end did you fix/clamp?

I may have to buy another accelero just to play with it!

Edit: PS I agree with the vrm/memory theory. Is there a fan in front of the HDDs? I think you need to look for some airflow across the bottom of the video card. If you have +/- case pressure you could use that grilled pci cover that comes with the accelero, but obviously air has to be pushed/pulled to/from somewhere.
Edit2: Is your airflow right-to-left or left-to-right? Maybe you could try just switching the direction and see if it changes where hot spots develop?

_________________
Currently running Mint 14 MATE on all machines.
Desktop/Gaming: E8400 / 650ti + Accelero S1 / Antec Solo
Myth Backend + Home Server: D945GSEJT / WD15EADS / Hauppage 950Q / Home made case
Myth Frontend + HTPC: Sempron 140 / Asus M4A785-M
Notebook:AMD A4-3300M


Top
 Profile  
 
 Post subject: Re: Accelero S1 in a slim MATX case
PostPosted: Wed May 04, 2011 6:59 am 
Offline

Joined: Wed Jul 12, 2006 10:29 am
Posts: 567
Location: de_DE
Nicely done sir!

If you oc your memory you usually get artifacts on the screen before a crash, so I'd say it's the VRM.

_________________
Lian Li V600, Asus P77Z-M Pro, i5-3570K 4.4GHz with Scythe Orochi, 140mm Slipstream 500RPM and Mugen2 115X Bolt through kit,
Evga GTX 670 FTW+ 4GB with Thermalright Spitfire and Thermalright TY-150 500-800RPM, Seasonic 460W Platinum Fanless


Top
 Profile  
 
 Post subject: Re: Accelero S1 in a slim MATX case
PostPosted: Wed May 04, 2011 4:29 pm 
Offline

Joined: Tue May 03, 2011 5:52 pm
Posts: 58
Location: Toronto
Thanks for the suggestions. A few points:

1) I bent it bit by bit by pressing it on the floor/carpet. Kind of like rolling sushi.

2) I use the case in a vertical orientation. The only intake is the fan by the PSU; I removed the fan by the SSDs because I felt there was no need to cool them (vs the hard drives I had before). Would it make a big difference to have another fan there? I have two horrible-sounding S-flexes lying around so I could always test it before buying another Noctua (the only good quiet option I've found).

_________________
Lone Industries L1: i7 3770, 2x4GB Mushkin Silverline, 160GB X25-M G2, Dell U2412M + U2211H
Lian-Li A04: i5 2400, 2x4GB Mushkin Silverline, 80GB X25-M G1, 9TB FlexRAID, 1GB 5750 (passive), all on Seasonic x460, hooked up to Sony 40" EX620 + KEF 2005.3 + Yamaha RX-V667


Top
 Profile  
 
 Post subject: Re: Accelero S1 in a slim MATX case
PostPosted: Thu May 05, 2011 4:49 am 
Offline

Joined: Mon Jan 11, 2010 8:19 am
Posts: 400
Location: Boston, MA, USA
I would be inclined to just remove PCI covers below the video card and see what happens :)

_________________
Currently running Mint 14 MATE on all machines.
Desktop/Gaming: E8400 / 650ti + Accelero S1 / Antec Solo
Myth Backend + Home Server: D945GSEJT / WD15EADS / Hauppage 950Q / Home made case
Myth Frontend + HTPC: Sempron 140 / Asus M4A785-M
Notebook:AMD A4-3300M


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group