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Poor core contact with NV Silencer!

post #1 of 27
Thread Starter 
My arctic cooling NV Silencer 5 Rev 3 arrived today, so I put it on my 7800GT straight away. It took about 20mins to remove to stock cooler (which sounds like a jet taking off), then a further 10 mins to install the NV Silencer.

I decided to remove the thermal compound which came with the Silencer and replace it with AS5. When I turned on my computer and played a game the temps rose to 80C!!

I removed to silencer to check the core contact and noticed that only about 5% of the core was in contact with the silencer.

I have been trying all day to get good, full contact between the core and the silencer but I am finding it really hard. I think the 8 memory pads on the silencer make it hard for the copper plate to touch the whole of the core.

After 4 or 5 attempts my load temps are down to around 59C max (from 70ish before) so I am happy but I still think it could be better.

Has anyone else had this problem and know what the solution is???
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post #2 of 27
Thread Starter 
Well, I think I have been an idiot......I decided that the only way to make good contact would be to shave the top of the 8 memory thermal pads using a penknife. This totally solved the core contact problem, but created a new problem.

The uneven surface of the thermal pads (after I have just cut the top layer) doesnt make very good contact with the memory modules. I really don't know what to do now. Should I buy some new thermal pads (preferably slightly thinner than the stock ones) and place those instead if the stock ones?

Please somebody help....
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post #3 of 27
59 max is a very very good temp for a GPU dude

GPUs are indanger at and past 90 degrees i think

i say yes, replace the thermal pads
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post #4 of 27
Why did'nt you just leave the stock compound on it?
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post #5 of 27
Thread Starter 
Well, looking back I think I probs should have left the stock stuff on, but I can't change it now so it looks like I will have to buy some new thermal pads.

Does 59C seem about right for a 7800GT with a NV silencer?
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post #6 of 27
Thread Starter 
Having said that, I doubt I would have got 59C with the stock paste. I think AS5 will have made a bit of difference, even if it does mean I have to get new pads.

BTW I have decided upon some shietsu AKASA pads. Any good?
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post #7 of 27
59 isnt too high for air cooling
and its well within reason, but i dont know how that cooler preforms on the whole
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post #8 of 27
I have the stock paste on my silencer and I have a 20°C drop, the shietsu pads are thin and wont really work
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devil's canyon
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CPUMotherboardGraphicsRAM
i7-4790K Gigabyte Z97 MX-G5 ZOTAC 1060 AMP! 6Gb 16gb Corsair Vengeance 2400 
Hard DriveHard DriveCoolingCooling
ADATA 128Gb NVMe Seagate Video 500Gb Phobya UC-2LT Plexi XSPC X4 Tank Combo 
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Nexxxos XT45 280 2x AC F14 PWM Win 10 Pro BenQ GL2250HM 
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Cherry compact Corsair CX750M Bitfenix Pandora Core Corsair Sabre RGB 
AudioOther
Realtek ALC1150 Aten CS682 KVM 
CPUMotherboardGraphicsRAM
Pentium D 915  Dell USFF Intel GMA 950 4gb Corsair ddr2 
Hard DriveOptical DriveCoolingCooling
WD Caviar 80gb sata II  Slim dvd rw Stock Copper Heatpipe  2x 60mm Sunnon fans 
OSMonitorKeyboardPower
XP sp2 BenQ GL2250HM Logitech k400 220W external 
CaseMouseAudio
Optiplex USFF w/ cable cover Logitech k400 Onboard SoundMAX 
CPUMotherboardGraphicsRAM
i7-4790 Gigabyte H97N-wifi Zotac GTX 750Ti 16gb Corsair XMS3 1600 
Hard DriveCoolingOSMonitor
Integral 480gb ssd AC Freezer i30 Win 10 Pro BenQ GL2250HM 
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venom gaming surface Realtek onboard Aten CS682 KVM 
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post #9 of 27
Thread Starter 
Damn and blast I have already ordered them. Do you think it matters if I put more than 1 on top of each other? I am guessing that this will not affect the heat transfer as the pads will be putty like and therefore will mould together.

Cheers for the help
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AMD 3700 KACAE 0602GPMW DFI LanParty nF4 SLI-DR XP Pro SP2/Vista Beta 2 Samsung SM930BF 19" TFT 
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AMD 3700 KACAE 0602GPMW DFI LanParty nF4 SLI-DR XP Pro SP2/Vista Beta 2 Samsung SM930BF 19" TFT 
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post #10 of 27
those pads are phase change pads I dont think that will work
devil's canyon
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presler
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haswell
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CPUMotherboardGraphicsRAM
i7-4790K Gigabyte Z97 MX-G5 ZOTAC 1060 AMP! 6Gb 16gb Corsair Vengeance 2400 
Hard DriveHard DriveCoolingCooling
ADATA 128Gb NVMe Seagate Video 500Gb Phobya UC-2LT Plexi XSPC X4 Tank Combo 
CoolingCoolingOSMonitor
Nexxxos XT45 280 2x AC F14 PWM Win 10 Pro BenQ GL2250HM 
KeyboardPowerCaseMouse
Cherry compact Corsair CX750M Bitfenix Pandora Core Corsair Sabre RGB 
AudioOther
Realtek ALC1150 Aten CS682 KVM 
CPUMotherboardGraphicsRAM
Pentium D 915  Dell USFF Intel GMA 950 4gb Corsair ddr2 
Hard DriveOptical DriveCoolingCooling
WD Caviar 80gb sata II  Slim dvd rw Stock Copper Heatpipe  2x 60mm Sunnon fans 
OSMonitorKeyboardPower
XP sp2 BenQ GL2250HM Logitech k400 220W external 
CaseMouseAudio
Optiplex USFF w/ cable cover Logitech k400 Onboard SoundMAX 
CPUMotherboardGraphicsRAM
i7-4790 Gigabyte H97N-wifi Zotac GTX 750Ti 16gb Corsair XMS3 1600 
Hard DriveCoolingOSMonitor
Integral 480gb ssd AC Freezer i30 Win 10 Pro BenQ GL2250HM 
KeyboardPowerCaseMouse
Cherry compact Corsair CX550M Fractal Design Core 500 Logitech B100 
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venom gaming surface Realtek onboard Aten CS682 KVM 
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devil's canyon
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presler
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haswell
(15 items)
 
CPUMotherboardGraphicsRAM
i7-4790K Gigabyte Z97 MX-G5 ZOTAC 1060 AMP! 6Gb 16gb Corsair Vengeance 2400 
Hard DriveHard DriveCoolingCooling
ADATA 128Gb NVMe Seagate Video 500Gb Phobya UC-2LT Plexi XSPC X4 Tank Combo 
CoolingCoolingOSMonitor
Nexxxos XT45 280 2x AC F14 PWM Win 10 Pro BenQ GL2250HM 
KeyboardPowerCaseMouse
Cherry compact Corsair CX750M Bitfenix Pandora Core Corsair Sabre RGB 
AudioOther
Realtek ALC1150 Aten CS682 KVM 
CPUMotherboardGraphicsRAM
Pentium D 915  Dell USFF Intel GMA 950 4gb Corsair ddr2 
Hard DriveOptical DriveCoolingCooling
WD Caviar 80gb sata II  Slim dvd rw Stock Copper Heatpipe  2x 60mm Sunnon fans 
OSMonitorKeyboardPower
XP sp2 BenQ GL2250HM Logitech k400 220W external 
CaseMouseAudio
Optiplex USFF w/ cable cover Logitech k400 Onboard SoundMAX 
CPUMotherboardGraphicsRAM
i7-4790 Gigabyte H97N-wifi Zotac GTX 750Ti 16gb Corsair XMS3 1600 
Hard DriveCoolingOSMonitor
Integral 480gb ssd AC Freezer i30 Win 10 Pro BenQ GL2250HM 
KeyboardPowerCaseMouse
Cherry compact Corsair CX550M Fractal Design Core 500 Logitech B100 
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venom gaming surface Realtek onboard Aten CS682 KVM 
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