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View Full Version : Should I reinstall NV Silencer 5 ..again!


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s-flow
01-18-05, 05:34 PM
Got me a NV Silencer 5 for my GT and after first try temps went
rapidly up higher then ever before, took it apart and found that only
half the core had traces of thermal compound (all memory chips was
covered). Cleaned and applied paste again, this time much more on the gpu.

Now the temps was lower.

Stock= idle 57/ load 82
NV Silencer= idle 55/ load 77

These results made me decide to do it again, now I had no more compound
left so I went to the local hardware store.
The only thing had was some cheap "silicon paste" (50% silicon 20% carbon and 30% metal oxide), according to the guy it would do the job as good as a more expensive compound.

Redid the job and now I have idle 58/ load 81 :(

This thing is very quiet and the temps is about as with stock hs.
but Im getting tired of doing this procedure over and over so what
do you think, should I get some more compound (if so which?)
and do this again?

Most users report much better results than this so I belive something
must be wrong here.

Also, is there no risk in using isopropyl alcohol for core and memory cleaning?

Daneel Olivaw
01-18-05, 05:40 PM
maybe arctic silver?

toxikneedle
01-18-05, 06:15 PM
ye buy paste... i wouldnt trust that stuff that the guy said works just as well if there is huge diference between arctic silver and other cooling pastes.

T.h.o.m.a.s.
01-18-05, 06:29 PM
check if the nv5 makes good contact with your core
by cleaning the core and silencer
then apply tiny drop of oil to yer core
spread it out to a thin layer of oil all over the core
place the silencer
remove it back again
then check on your silencer if you have equal spreaded contact of your core

it might be a problem

3246251196
01-18-05, 06:39 PM
when you say clean how exactly do you define it. i mean, can you simply wipe off the old stuff with a tissue?

T.h.o.m.a.s.
01-18-05, 06:43 PM
clean the nv5 with soft tissue with some alcohol or detergent i mean the tissue does not have to be soaked ;)
the same for the core
that's how i always remove old paste

3246251196
01-18-05, 07:05 PM
but you have to use some type of liquid. you cannot JUST use tissue?

circuitbreaker8
01-18-05, 07:15 PM
My 6800 GT w/ NV5 is idling @ 53* at stock speeds...no matter how many times I took it off and put it back on. Keep in mind its liek 12* outside and my room is freezing. It used to idle @ 61 though.

einstein_314
01-18-05, 07:25 PM
but you have to use some type of liquid. you cannot JUST use tissue?

I don't think that just using a tissue would be the best way to do it. Use rubbing alcohol (Isopropanol 99.9%). Get it nice and clean. Then reapply. I'd recommend Arctic Silver 5. Put on a little and spread it around evenly. Attach the NV5 and then remove it to inspect where it's making contact. Keep adding a little bit in the places where it isn't contacting until it contacts everywhere. This may take several attempts. Should work great.

bkswaney
01-18-05, 10:10 PM
Got me a NV Silencer 5 for my GT and after first try temps went
rapidly up higher then ever before, took it apart and found that only
half the core had traces of thermal compound (all memory chips was
covered). Cleaned and applied paste again, this time much more on the gpu.

Now the temps was lower.

Stock= idle 57/ load 82
NV Silencer= idle 55/ load 77

These results made me decide to do it again, now I had no more compound
left so I went to the local hardware store.
The only thing had was some cheap "silicon paste" (50% silicon 20% carbon and 30% metal oxide), according to the guy it would do the job as good as a more expensive compound.

Redid the job and now I have idle 58/ load 81 :(

This thing is very quiet and the temps is about as with stock hs.
but Im getting tired of doing this procedure over and over so what
do you think, should I get some more compound (if so which?)
and do this again?

Most users report much better results than this so I belive something
must be wrong here.

Also, is there no risk in using isopropyl alcohol for core and memory cleaning?


Sounds like you stock cooler was doing a good job. :)

My idle temp did not drop much if any
from my NV5 install.
The NV5 is doing a better job on load
and about the same on idle.


Not all of us can have a 30 something idle.
There are tons of us idling 58+.

bkswaney
01-18-05, 10:13 PM
My 6800 GT w/ NV5 is idling @ 53* at stock speeds...no matter how many times I took it off and put it back on. Keep in mind its liek 12* outside and my room is freezing. It used to idle @ 61 though.

My normal idle is 60 with a room temp of 72 to 75 degrees
on my BFG GT.

s-flow
01-19-05, 05:06 AM
check if the nv5 makes good contact with your core
by cleaning the core and silencer
then apply tiny drop of oil to yer core
spread it out to a thin layer of oil all over the core
place the silencer
remove it back again
then check on your silencer if you have equal spreaded contact of your core

it might be a problem

I have removed it 2 times and after first (thin layer paste on core and more
on the memory) just bearly half the core was touched by paste. I used
0.5-1mm paste on core that time.

Second try I put a lot on the core 2-2.5mm and the temps went down a
little from stock and after taking a look I found the entire core touched by
paste.. so I guess I need a lot of paste to get contact but Im pretty sure
I got good contact with all that paste.

If I do the oil, can I use any oil for this? These componets seems durable
against stuff as I understand.

I will get some AS5 then and maybe I should sand the memory blocks down as other has, It is the core that benefit most from a thin layer of paste, right?

Thanks for the input!

T.h.o.m.a.s.
01-19-05, 05:20 AM
try to keep the paste layer as thin as possible
if you had barely contact with 1 mm paste
you won't get much contact with a thin layer of oil

maybe sanding of those mem pads of the nv5 will help
or remove that square on the nv40 chip , don't know the exact english word for that , a core protector ? :D

Darkoz
01-19-05, 06:43 AM
try to keep the paste layer as thin as possible
if you had barely contact with 1 mm paste
you won't get much contact with a thin layer of oil

maybe sanding of those mem pads of the nv5 will help
or remove that square on the nv40 chip , don't know the exact english word for that , a core protector ? :D

It's called a "shim" and there is absolutely no need to remove it as the core itself actually sits higher than the shim.

T.h.o.m.a.s.
01-19-05, 07:54 AM
ok , with the r9700pro it was higher than the core

rombat
01-19-05, 09:00 AM
S-flow make sure you bolt the heatsink REAL good. If you do not screw it down all the way the heatsink will not make contact with the gpu and memory (the rubber washer should be bulging out some when you screw the bolts down real good). I put AS5 on both my gpu's and thermal paste on my memory and my idle temp is around 36c-39c....

Morn
01-19-05, 09:23 AM
My idle temp is the same with AS5 and NV5.
What is your ambient temp rombat?

Salamandar
01-19-05, 09:28 AM
I use the thermal compound that came with the NV5 and I get amazing temps; though some of you say something is wrong with these temps.
I get 32-34 Idle and 40-42 under load ( playing Americas Army and doom3 )
P.S. My card is overclocked @ 425/1150 in 3d.

s-flow
01-19-05, 09:33 AM
S-flow make sure you bolt the heatsink REAL good. If you do not screw it down all the way the heatsink will not make contact with the gpu and memory (the rubber washer should be bulging out some when you screw the bolts down real good). I put AS5 on both my gpu's and thermal paste on my memory and my idle temp is around 36c-39c....

Ok.. have been somewhat carefull here and not tightening the screws
very much (read about them snapping of for some).

Ill get some AS5 and give it a try, Ill report back.

Morn
01-19-05, 09:50 AM
425/1150
That's a nice overclock, I can barely manage 390/1100, it pauses and stutters if I go much higher, unless I volt mod it, but someone here said that means a high chance of failure.

rombat
01-19-05, 10:31 AM
Hey Morn, my ambient temp on the video cards are around 52-59....

circuitbreaker8
01-19-05, 11:56 AM
Lol, you guys DO relize overclocking your card is pretty much worthless nowadays. The difference between my GT @ 370/1000 and 400/1100 is 5fps in Doom 3.



BUT I DO GAIN LIKE 10,000 points in ePeni$mark06 :lol:

Salamandar
01-19-05, 12:19 PM
5 FPS in Doom 3 could make a huge difference. 25 FPS might not be smooth enough but 30 FPS is much better yet not smooth enough but better.

Morn
01-19-05, 09:33 PM
>>Hey Morn, my ambient temp on the video cards are around 52-59....

Higher than your idle temp? :)

DaShadow
01-19-05, 11:26 PM
I'm idling at 58c with ambient 39c, so you are not out of the norm.

Ohh BTW, that's with the NV5, I'm a couple degrees cooler with this than the stock. Also, I had to reapply twice two, because I had the same thing as you in that I needed to put more thermal compound on the GPU, I skyrocketed to 77c idle temp in two minutes my first application.

Artic Silver 5 is really the best you can buy, I have Artic Silver 3 on mine because that's what I had laying around. :D