Repasted GPU, CPU, and added new thermal pad

I did the repaste a while back, but I ended up adding new thermal pads and also added IC7 on the memory chips.

When I did the GPU repaste, my temps dropped to 50c and 65-70 load. With the added thermal pad, it went up to 55c idle and 75-80c load.

I did notice that I am able to run my memory at 1080mhz, before I was not able to overclock much, and believe I still have some head room left. However, when I am in Windows, the screen shutters at the top and the bottom of the screen. I haven;t tested it for more then an hour using Unigine but seems pretty stable. Why would it shutter?

Also, i used .05mm thermal pads, seems to me that they are too thin, how can there be any contact between the heatsink and chips? I thought about buying 1mm thermal pads.

 

I found some on ebay that is 4mm thick. Just search for thermal pads.

5 GPU CPU Thermal Gap Pad Heatsink Chip 25mmx25mmx4mm | eBay

I would do something about this sooner than later. I have had the same issue on gpu cooling desktop water blocks which fried the memory.

 

Woah you do not need 4mm pads they are FAR too thick.

Stock ones are 1mm and that is thick enough otherwise the clearance from the core will be so much it wont make contact with the heatsink = Melted.

min 0.5mm to 1.0mm max

0.5 mm are for people who want minimal clearance from the heatsink to the core the temps you are getting are most likely that good because of the .5mm pads if you intend to decrease your temps further you will be very lucky indeed. You will most likely raise your temps if you conduct another repaste.

Vram temps are not the same as your MEM(IO) that is the memory controller located near the edge of the core. The Vram itself does not get that hot and should not be confused with the memory clocks.

People often think that decreasing the temps will raise the overclock this is not always the case unless you intend to have a pot of dry ice sitting on top of the GPU, overclocks are limited by voltage and the card itself not just the temps.

 

Ok that was just an example. You can get them at practically any thickness from ebay.

As for ram not getting very hot like I said I have gotten it hot enough to cook it on desktop systems.

Why take a chance?

 

But the OP raised a very good question.

Which is better for vram? Really thick gooey paste or the properly sized thermal pad (whatever thickness that happens to be).

Neither is ideal for sure but those are the only choices we have.

 

Compound is a bad choice for the G73 because the heatsink was made by a giraffe in a sweat shop in taiwan so its best to use thermal pads as they provide proper conduction with the heatsink.

Even so Vram does not reach anywhere near the temps of the core so pads provide good enough conductivity and its the core which is what you need to cool for the GPU to run properly.

Still think it wont make any difference changing the .5mm pads or the compound those temps are pretty much the best you can get on the 5870M with the G73 cooling I have done extensive repastes and without additional cooling I see 79/80oC under Extreme Burn and 70oC with.

 

I'll stick with what I got then. I mean I cant really complain, tven though the temps seem hire, I am able to overclock the memory, which is a surprise because it wasn't able to overclock for . I havent tested it for more then an hour but seems more or less stable.

The only thing that bothers is that the screen shutters from the top porton of the screen and the bottom. Doesn;t do it all the time, when it happens its annoying. Although it does not do it when I use an external monitor.

 

Do you mean a line comes up at the top of the screen and the screen judders? That is the clocks changing on the GPU. Happens on mine too because I didnt use the modded Vbios.