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[Official] Vega Frontier / RX Vega Owners Thread - Page 443

post #4421 of 5305
Oh that is tempting. Would love to direct compare FE vs RX
    
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post #4422 of 5305
Hello. QUestion about vega 64 LC (Sapphire). I was just able to get swap my vega 64 air with a LC. I watched videos online and it was clocking about 1750 in turbo mode (I believe the video I watched was showing fallout 4). I just installed it and I just raised the power limit to 50% in custom. I clock ~1690 full load in the witcher 3.

If I put turbo mode without touching anything it clocks ~1660.

Is there something I am missing?
post #4423 of 5305
anyone know what's the max, safe hotspot temperature? i tried googling but find conflicting information. from 90c to 115c. i noticed on my air cooled vega at stock settings, bios, and profile hitting up to 86c. though average is around 80c.
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post #4424 of 5305
Quote:
Originally Posted by fato22 View Post

Hello. QUestion about vega 64 LC (Sapphire). I was just able to get swap my vega 64 air with a LC. I watched videos online and it was clocking about 1750 in turbo mode (I believe the video I watched was showing fallout 4). I just installed it and I just raised the power limit to 50% in custom. I clock ~1690 full load in the witcher 3.

If I put turbo mode without touching anything it clocks ~1660.

Is there something I am missing?

The 1750 MHz is the highest achievable clockspeed, but I found that my LC(@ +50% Power Limit) pretty much only hits that right off the bat when it's still cool. After just a few seconds of 100% load the clockspeed starts to fall and steadies out at about 1680 MHz.
Quote:
Originally Posted by orlfman View Post

anyone know what's the max, safe hotspot temperature? i tried googling but find conflicting information. from 90c to 115c. i noticed on my air cooled vega at stock settings, bios, and profile hitting up to 86c. though average is around 80c.

I think somewhere in this thread someone says that 105°C is the max safe temp for the Hot Spot which is stated in the BIOs. I found that if I undervolt my LC by -62 mV(sadly, the lowest I can go), my Hot Spot temp drops from ~88° down to ~80°C.
post #4425 of 5305
Just ignore hotspot.
ive done tests and it looses its temp instantly when you close stress test
its just nonsense .
you can apply any result from resistance on thermal diodes.
thats i i think anyway, anything that has instant temp drops tellls me it was just a estimate
post #4426 of 5305
Quote:
Originally Posted by fato22 View Post

Hello. QUestion about vega 64 LC (Sapphire). I was just able to get swap my vega 64 air with a LC. I watched videos online and it was clocking about 1750 in turbo mode (I believe the video I watched was showing fallout 4). I just installed it and I just raised the power limit to 50% in custom. I clock ~1690 full load in the witcher 3.

If I put turbo mode without touching anything it clocks ~1660.

Is there something I am missing?

I think 1750 MHz is the max clockspeed achievable under perfect conditions. I found that my LC, at +50% Power Limit, only hits close to 1750 right off that bat. After only a few seconds of 100% load, the clockspeed begins to drop and it settles at around 1680 MHz.
Quote:
Originally Posted by orlfman View Post

anyone know what's the max, safe hotspot temperature? i tried googling but find conflicting information. from 90c to 115c. i noticed on my air cooled vega at stock settings, bios, and profile hitting up to 86c. though average is around 80c.

Earlier in this thread, people were saying that in the BIOs, it says that 105°C was the max safe temp for the Hot Spot. I found that when I undervolt my LC by 62 mV(sadly, the lowest I can go), my Hot Spot temps drop from ~90°C, down to ~82°C.
post #4427 of 5305
Quote:
Originally Posted by wellkevi01 View Post

I think 1750 MHz is the max clockspeed achievable under perfect conditions. I found that my LC, at +50% Power Limit, only hits close to 1750 right off that bat. After only a few seconds of 100% load, the clockspeed begins to drop and it settles at around 1680 MHz.
.

So ~1690 in the witcher 3 with only +50 power limit is about right I guess? Thanks

I tried to raise the frequency 2% but it crashed right away with stock voltage. I guess there is really no room for OC>?
post #4428 of 5305
Quote:
Originally Posted by cplifj View Post

does anyone happen to be running corsair's link software and also happen to get clocks stuck at max after gaming or compute loads ?

it doesn't seem to happen when corsair's link software isn't running, this also monitors temps and fanspeeds of everything in the system.

more monitoring just seems to conflict with each other and then some.

I would highly recommend to limit the number of monitoring softwares running, especially ones polling the gpu as it will have an effect on the devices overall performance and stability... now it can't be helped when your trouble shooting to tuning, but in general; my humble suggestion is to avoid it. As you have suggested the different softwares pull from the same resources to read back the / poll the state.
Quote:
Originally Posted by orlfman View Post

anyone know what's the max, safe hotspot temperature? i tried googling but find conflicting information. from 90c to 115c. i noticed on my air cooled vega at stock settings, bios, and profile hitting up to 86c. though average is around 80c.

I have read / heard many numbers tossed around... and on this topic... to my knowledge it has never been identified by anyone credible from AMD / Radeon in the technical department. I have called it a nuthin' burger... and "believe" it to be a current - table referenced - diode near the bottom of the die mass on top of the base of the interposer (just between the mem and proc/soc). It scales beat for beat with memory loading with all my testing that I have done. I have seen no appreciable collaboration between it and performance / stability. The caveat to that statement is that I run about a 10-15 C delta from it to my HBM temps on my setup under load so I "maybe" see 45 C after an hour or two of straight' gaming or benching. This is on a non-molded chip first gen ref card.
Quote:
Originally Posted by Grummpy View Post

Just ignore hotspot.
ive done tests and it looses its temp instantly when you close stress test
its just nonsense .
you can apply any result from resistance on thermal diodes.
thats i i think anyway, anything that has instant temp drops tellls me it was just a estimate

It can be precision rather than an estimate, but most of these setups are designed to be "more" accurate within a certain range. Depends on the granularity of the look up table. I do agree that its a load dependent... in that sense, an estimate perhaps of the thermal delta or gradient of the entire package.

All this reminds me of my ole' Phenom II, oc' it to kingdom come, but if the temp read ever >50C a crash was imminent. Mind you stock... 70C + was a non-issue. AMDs like it cold for sure, not sure if this is at all relate-able to the hot spot talk though. rolleyes.gif
 
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post #4429 of 5305
Quote:
Originally Posted by fato22 View Post

So ~1690 in the witcher 3 with only +50 power limit is about right I guess? Thanks

I tried to raise the frequency 2% but it crashed right away with stock voltage. I guess there is really no room for OC>?

Did you swap for the factory liquid all-in-one or do you have a custom waterblock? My core temp starts at 1750 and settles at 1725 in Witcher 3 on custom water. With fans and pumps turned up, it settles at 1740.
Edited by 0451 - 11/20/17 at 7:16pm
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post #4430 of 5305
Quote:
Originally Posted by 0451 View Post

Did you swap for the factory liquid all-in-one or do you have a custom waterblock? My core temp starts at 1750 and settles at 1725 in Witcher 3 on custom water. With fans and pumps turned up, it settles at 1740.
That's about right, the 1680MHz during something like Superposition is a worst case scenario for the GPU at load and that's the MHz it drops to when set to 1750MHz and for me running around 1150mv.
    
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