G50vt-x5 Replacing gpu thermal pad

Hey guys I had put in a e8435 cpu into my g50vt which works well and I decided to replace the thermal paste on the gpu as well. I noticed they were thermal pads so I removed the middle thermal pad of the gpu heatsink and used thermal paste on it and didnt really understand what the things surrounding the gpu were so just left thermal pads on them. So now the temperatures are reaching 100 on l4d2 and I need to reapply thermal paste/pads onto the gpu, I think I need copper shims or thermal pads but have no idea what size to get or how to apply them. Does anyone have any guides on this or know what sizes/areas on the heatsink I need to apply them?

Thanks. edit) I saw copper shims on ebay that say they are .66mm and are used for g50's, is this the correct size?

 

I wouldn't recommend shimming your GPU. I have an E0 stepping E8335 and it gets quite hot... if anything I'd buy some copper blocks. They helped stabilize my temperatures and it also takes longer for my computer to heat up.

The E8x35 series is overvolted a LOT. Try using throttlestop to decrease voltage. I can maintain 3GHz at 1.05V just fine instead of the stock 1.225V. That's basically a 20% decrease in voltage and a 12C cut in max temps on the CPU, and 6C off the GPU (for me).

 

I have heatblocks on the heatsink and am using rmclock to undervolt as much as I can but thanks for advice, is there a reason not to use shims? Isnt it, or a thermal pad the only way to reattach the heatsink to the gpu and surrounding parts? I am kind of forced to replace it with something now as I've physically pulled the thermal pad and thrown it away.

 

Ohh I see. You're further along than I imagined. Shims will work, .66mm sounds thin enough but you're beyond my expertise here...

Try to do it soon because dead GPU memory is usually what kills the GPU rather than GPU core failure. Your GPU core might be 100C but your memory may be even hotter!

 

ah crap, I was sort of afraid of that. I dunno what to do then, I wish someone had some expertise its hard to believe no ones reapplied thermal paste to a g50vt gpu.



Heres the gpu part I speak of, I put thermal paste on the larger top right one but kept the existing thermal pads on there because I dont want them not touching the heatsink and didnt have them available, now I dont know if I need to buy new thermal pads for all of them or what I should do. I think ive read that I can use .55mm coppper shim but which do I do it on, I cant remember if the vga die on the top right had thermal paste or a pad. I could use the same thing I used to glue the heatblocks to glue the shim to the heatsink its just determining the location/size of them.



ed)

Here is a picture of a persons heatsink for a g50vt-x5 on ebay, I notice the larger gpu die's thermal pad is pushed down and indented so I am assuming it will just require thermal paste, whereas the others are not. So maybe I just need to determine the copper shims size or whether I should just use a pad.

 

I've reapplied paste four times for the 9800m and twice for the 260m.

The shim size is relatively thin... if you can find a thermal pad it might not be a bad idea (Though 0.6mm sounds about right for a shim). Otherwise err on the thinner side. I don't really know much else about shims though, sorry.

The GPU die actually has a hardened thermal paste so you should probably scrape the paste off when you repaste. It'll go down to just copper and you'll need a credit card or something to get the paste off. It's basically caked on.

 

So what did you use to reapply? or did you keep the existing pads

 

I kept the existing pads, some ripped in the process so I just patched it with some paste and squished things back together. It's kind of like sheets of semi unsticky clay. For paste I used a tube of OCZ Freeze. It's not bad and dead simple to apply, no extra precautions or instructions.

 

Ah I see, I believe I've messed the pads up. I bought some more pads for it and some shinetsu, thanks for all the help and all your info on other topics like 15.4 monitor and thermal blocks. Its much appreciated

 

Oh yeah, I thought I recognized your username

Best of luck with the thermal pads, they're quite annoying sometimes.

 

I replaced the thermal pads, this thing gets hot now though; over 100 on l4d2. I dont know if its just that the cpu is too good for the computer, I am running at a higher setting than I was before, it idles at 41/47c for the 2 cores and 51 for the GPU. I dunno any idea why this happens, I've reached 104 celcius. Is there a fan upgrade or something I can do to cool it down?

 

104 sounds like it's not out of control but still very warm... You might try reflashing your vBIOS to a slightly lower voltage. I remember a few threads on undervolting the 9800m. I was able to undervolt and overclock to just under GTS clocks pretty safely.

The E8435 is guaranteed to get hot--lots of voltage and high clocks. My E8335 cranks the GPU to 102C when overclocked. Actually, you know what? Try undervolting using ThrottleStop. That should do the trick instantly. I can maintain 2.93 GHz at 1.10V, perhaps you'd be able to get something close to that.

 

Ah thanks for the help but I've already set my voltage to 1.1v on my cpu under rmclock, am I able to undervolt the 9800m gs as well? I thought it was bad to undervolt your graphics card though I've never tried changing any voltages on it.

 

It's only bad if you go too far. It does drop a few degrees but YMMV. I'm currently under-volted to 1.05v and overclocked to GTS speeds.

Here's a whole thread about it and some have posted their under-volts as well. Here's how to flash it as well.

 

Okay I managed to fix it, the thing was going to 75 degrees just browsing the internet. The only thing I did was re-apply thermal paste and cut the thermal pads a bit, also when I re-screwed in the screws I pushed the metal clamps they go into down before tightening it. I think my problem may have been that I didnt push the metal down so the screws did not make a good contact with the base. I had to use a dremel to drill a flat-head style top into the screws since they strip so easily, I'm glad its finally fixed. Thanks for the help guys, heres a picture of my thermal pads for a reference incase anyone else ever has to do it.