What is recommended operating temp of HBM?

[WhiteSkyMage]

Hey guys, my HBM2 memory on Vega would sometimes go like 85C. Is this normal? It's on watercooling on a 280mm rad. I have bought a new rad, but it hasn't come yet. I also ordered a few sensors.

 

Question is, what temperature is dangerous for High Bandwidth Memory to be running at and what is optimal to aim for?

[Valkyrie Lenneth]

i think anything above 80*C makes hbm memory go unstable , it could just cause instability , damage would occur at 120*C+ probably with a minimum of 110 +-

 

optimal for hbm is basicly lower than 80*C because above it reduces ur oc / stability capacity

[WhiteSkyMage]

1 minute ago, Valkyrie Lenneth said:

i think anything above 80*C makes hbm memory go unstable , it could just cause instability , damage would occur at 120*C+ probably with a minimum of 110 +-

ok, well I had a "hottest spot" on my GPU at 101C once. However HBM2 only reached 90C and it was still stable.

You think it's normal that GPU die is less hot than the actual HBM?

[Valkyrie Lenneth]

2 minutes ago, WhiteSkyMage said:

ok, well I had a "hottest spot" on my GPU at 101C once. However HBM2 only reached 90C and it was still stable.

You think it's normal that GPU die is less hot than the actual HBM?

not sure, that depends on the chip itself, however its going to degrade ur chip running it at 95+ for longer periods x)

[dfsdfgfkjsefoiqzemnd]

That's an EK full cover, right?  Not sure how many people here have a Vega on water, so I'd get in touch with EK to ask if it's normal. 

[Sauron]

3 minutes ago, Valkyrie Lenneth said:

i think anything above 80*C makes hbm memory go unstable , it could just cause instability , damage would occur at 120*C+ probably with a minimum of 110 +-

Do you have a source for that? I couldn't find much information on HBM safe/stable temperatures. GDDR can stand some pretty high temperatures, but HBM might be different.

 

@WhiteSkyMage If you're on water, perhaps you should make sure that the waterblock's thermal pads are making proper contact with the vram chips and gpu, check that the pump is running properly and the fans are working. Safe or not, it probably shouldn't get that hot with a custom loop. I would be more worried with the gpu running at 100C than with HBM running at 85, the gpu is generally more vulnerable to heat.

[Valkyrie Lenneth]

12 minutes ago, Sauron said:

Do you have a source for that? I couldn't find much information on HBM safe/stable temperatures. GDDR can stand some pretty high temperatures, but HBM might be different.

 

@WhiteSkyMage If you're on water, perhaps you should make sure that the waterblock's thermal pads are making proper contact with the vram chips and gpu, check that the pump is running properly and the fans are working. Safe or not, it probably shouldn't get that hot with a custom loop. I would be more worried with the gpu running at 100C than with HBM running at 85, the gpu is generally more vulnerable to heat.

Junction operating temperature -40˚C to 125˚C    but it was shown that above 80*C its where hbm becomes less stable ( with overclocked chips )

 

damage wont really occur from 100*C on the hbm but 110-120 can damage/degrade it overtime even if its within the operating temperature

 

those are just statistics from quite a few oc,s

 

sauce for all is

 

https://www.esilicon.com/wp-content/uploads/esilicon-high-bandwidth-memory-14lpp-hbm-gen2-phy-brochure-web-20160406.pdf

 

but its just the standard information, nothing about stability runs ect

[Sauron]

3 minutes ago, Valkyrie Lenneth said:

Junction operating temperature -40˚C to 125˚C    but it was shown that above 80*C its where hbm becomes less stable ( with overclocked chips )

Interesting. I wouldn't necessarily base myself on overclocked hardware when it comes to stability though, temperatures is just as likely to be the culprit as the overclock itself in that scenario.

 

Either way those temperatures on water are not normal.

[Valkyrie Lenneth]

4 minutes ago, Sauron said:

Interesting. I wouldn't necessarily base myself on overclocked hardware when it comes to stability though, temperatures is just as likely to be the culprit as the overclock itself in that scenario.

 

Either way those temperatures on water are not normal.

depends if he had thermal pads on the memory ect and if hes using a 280rad for hes entire system + ocing hes cpu it could be normal because vega gets hot af

[WhiteSkyMage]

14 hours ago, Sauron said:

Do you have a source for that? I couldn't find much information on HBM safe/stable temperatures. GDDR can stand some pretty high temperatures, but HBM might be different.

 

@WhiteSkyMage If you're on water, perhaps you should make sure that the waterblock's thermal pads are making proper contact with the vram chips and gpu, check that the pump is running properly and the fans are working. Safe or not, it probably shouldn't get that hot with a custom loop. I would be more worried with the gpu running at 100C than with HBM running at 85, the gpu is generally more vulnerable to heat.

alright. Well  the GPU is running at max of 70C (because I am using the LC Vega BIOS, which does NOT allow higher temps than 70C). The HBM2 however goes like 85C. And no, there are no PADS for VRAM. VRAM is HBM2, and it's next to the die (i used thermal compound to cover the die and the HBM2). Go and see what the Vega package looks like, cuz maybe you think that I am with GDDR5.

 

13 hours ago, Valkyrie Lenneth said:

depends if he had thermal pads on the memory ect and if hes using a 280rad for hes entire system + ocing hes cpu it could be normal because vega gets hot af

Totally true. I have OCed my CPU to 4.1GHz. However I have NOT stressed both CPU and Vega, because I am afraid that this may damage the CPU and Vega die. I have to tell you that Vega 64, when running a benchmark actually HEATS my CPU (I am pretty sure that water goes up to 60C or maybe even higher than that. So when Vega is running fully, CPU heats up to 80C with ONLY 1 core actually running at 4.1GHz and others being idle. Clearly, the radiator is overwhelmed with heat. I tried touching it, and it's VERY HOT!

 

I have ordered a new 240mm radiator and it should be coming in 2 days (hopefully). My question was, will HBM2 degrade at 85C?

[Valkyrie Lenneth]

dont touch it, fingergrease can cause shorts , ur chip wont degrade at 85*C that will start at 110+ but it will become less stable to hotter u go after 80*C

 

also the blue pads u got on there, they can be swapped for thermal pads for ur water block usually they come with the waterblocks o,o ( like the silver ones ) theheck the blueones tho o,o

 

 

u dont really have to worry about the temps much but it will affect ur max oc ALOT if u go above 80*C basicly if u can keep the hbm below 80*C  u could clock way higher

 

 

u might wanna swap out the thermal pads just buy a sheet of thermal pad for gpu and cut them proper x)

 

also if u want a custom loop for both CPU and gpu i always recommend getting a 240mm for ur cpu and then a 120mm rad for ur gpu alone x) example > 240mm to cpu then to 120mm to gpu x) that way ur gpu would get nice cool coolant also without beeing heat up from the cpu first

 

^ is just my personal recommendation,  one single 120mm rad ( thick preferred ) for gpu and 240mm rad for cpu ( doesnt have to be extreme thick but need ssome thickness )

 

the gpu at max 70*C with a oc is pretty decent btw, just ur hbm memory is running quite hot ( probably dont have good thermal pads / wkm rate low

[WhiteSkyMage]

2 hours ago, Valkyrie Lenneth said:

dont touch it, fingergrease can cause shorts , ur chip wont degrade at 85*C that will start at 110+ but it will become less stable to hotter u go after 80*C

 

also the blue pads u got on there, they can be swapped for thermal pads for ur water block usually they come with the waterblocks o,o ( like the silver ones ) theheck the blueones tho o,o

 

 

u dont really have to worry about the temps much but it will affect ur max oc ALOT if u go above 80*C basicly if u can keep the hbm below 80*C  u could clock way higher

 

 

u might wanna swap out the thermal pads just buy a sheet of thermal pad for gpu and cut them proper x)

 

also if u want a custom loop for both CPU and gpu i always recommend getting a 240mm for ur cpu and then a 120mm rad for ur gpu alone x) example > 240mm to cpu then to 120mm to gpu x) that way ur gpu would get nice cool coolant also without beeing heat up from the cpu first

 

^ is just my personal recommendation,  one single 120mm rad ( thick preferred ) for gpu and 240mm rad for cpu ( doesnt have to be extreme thick but need ssome thickness )

 

the gpu at max 70*C with a oc is pretty decent btw, just ur hbm memory is running quite hot ( probably dont have good thermal pads / wkm rate low

I think you don't really get which cooler I have. The Swiftech H240X is an AIO cooler that came with 280mm radiator/res/pump combo and Apogee XL waterblock (for my CPU). What I did was connect the GPU to that loop (i.e. i extended it). Unfortunately that 280mm radiator is NOT able to handle the heat from both CPU and GPU. I ordered a 240mm radiator to put on the front of my case. You can see all my PC specs in the signature below. Because not all 240mm radiators can fit in the front of my case, I bought a 45mm thick radiator that is 276mm in length from Magicool. I am sure that this would fit well... Basically I will have a 280mm and a 240mm radiator (idk if I need another 120mm in the back?).

 

The thermal pads (in blue) came WITH my waterblock from EK. My thermal compound is from EKWB, so i trust it's good.