Wattage and Temperature target different in different RX470s

[ARAN_108]

Hi, I was going through VGA BIOS files of various RX470s from different manufacturers.

All Rx470 GPUs had different target temperatures, max target wattage.

Here's my GPU:
https://www.techpowerup.com/vgabios/187196/xfx-rx470-4096-160913

and heres another GPU:
https://www.techpowerup.com/vgabios/185234/sapphire-rx470-4096-160715

Why is there a difference in target wattage 87Watts in my GPU and 135Watts in Nitro+
(Is it because of the VRM capability)

Should the target temperature be different (Is it a practice of manufacturers to lower speeds)?

I target my GPU temps at 70deg.C, should I increase it to 75 deg. Is it safe for a prolonged use?

 

[RobCrezz]

Probably because the Nitro + has a much better cooler and probably higher end VRM components.

Yeah 75'c is fine for prolonged use.

 

[ARAN_108]

Probably because the Nitro + has a much better cooler and probably higher end VRM components.

Yeah 75'c is fine for prolonged use.

Nitro+ definitely has a better cooler.
I am going to dismantle the card to do a little analysis of VRMs and change the thermal paste, just to make sure that I don't end up burning my VRMs. I hate it when my card throttles at 70'.

 

[RobCrezz]

You should be ok, I suspect you would hit thermal limits before power limits if you raised them. If VRM temps get too hot it should also throttle, so its worth experimenting with the limits.

 

[ARAN_108]

You should be ok, I suspect you would hit thermal limits before power limits if you raised them. If VRM temps get too hot it should also throttle, so its worth experimenting with the limits.

I just applied Arctic MX-4 on my GPU. The stock thermal paste was pretty dry.

Saw around 8'C drop in temps at stock clocks.

Stock thermal paste(stock clocks):
GPU: 1226MHz
VRAM: 1750MHz
Temps: 70'C
Wattage:87W
Fan RPM: around 2500 to 3000
A lot of throttling here

after applying Arctic MX4(OC'ed):
GPU: 1265MHz
VRAM: 1750MHz
Temps:74'C
Wattage: 100W
Fan RPM: 1500 to 2000
Not much throttling

Should I run the GPU at 100W? I don't know if the VRM is good enough for that?

 

[RobCrezz]

Yeah I would try it, its not much more.

 

[ARAN_108]

Yeah I would try it, its not much more.

Done! Ran it at 105Watts, should hold good till 110Watts, since RX470 Max TDP is around 120W. I will allow 10W room for it.

The temps are kinda high again (not much). DO you think I applied too much thermal paste(MX4).
I heard there's no curing time for the MX4.

 

[RobCrezz]

Theres not curing time for mx4. Shouldnt be too much, the heatsinks clamp quite tight so it would just push it out the sides if there was lots.

What temps are you hitting? If your still below about 85'c then your fine.

 

[ARAN_108]

Theres not curing time for mx4. Shouldnt be too much, the heatsinks clamp quite tight so it would just push it out the sides if there was lots.

What temps are you hitting? If your still below about 85'c then your fine.

Doesn't go beyond 76'C with 75'C target.

 

[RobCrezz]

Yeah you can go much higher with no problem.

 

[ARAN_108]

Yeah you can go much higher with no problem.

Wow! Thanks.