My 3080 suprim OC settings, advice welcome

[krasatos]

Hey everyone (I’m new here so take it easy ),

I’ve been fiddling around with my new 3080 on phoenixminer and have collected some data on OC settings. Here are my results:

hash	temp	fan	w	core	mem	pl
98.32	44	70	240	-200	2200	240
95.05	40	70	209	1075	1500	225
94.75	41	70	225	-200	2200	225
98.68	40	70	214	1075	2200	225
99.96	40	70	217	1075	2450	225
100.2	42	60	216	1075	2500	220
100.9	42	60	217	1075	2640	220
101.2	42	60	218	1075	2700	225
102.2	42	60	219	1075	2900	240
102.4	42	60	219	1075	2950	225
102.4	42	60	219	1075	2960	240
102.3	42	60	219	1075	2970	220
102.5	43	60	220	1075	3000	225
102.5	43	60	221	1075	3400	240
102.5	43	60	222	1075	4100	240

I am between the two checked settings. What’s your opinion?

At 3000 mem clock and 220 PL, hashrate seems to vary between 102 and 102.5, whereas with 225 PL, it gives me a steady 102.5.

As i cannot monitor mem temps, i stuck a fan and two small (4x4cm?) heatsinks on the backplate, on the two sides of the gpu where it got hot (easily touchable with bare hands).

Is that a good sweetspot to leave it alone?
Any concerns about the card’s wellbeing?

Thanks in advance.

[Yamaruan]

Hi,

I have been locking the core at 1060 and mem at 2700, hashing at 101.2 for like 3 months straight and it’s very stable for me, glad to know it can be more optimized like you did above. Will try and see if it can keep up.

Edit: With locking core @1075 and memory @2950, i got 102.63 stable on Gminer. Power at the wall, which i guess is about ~260w, while it reports 220w in the software.

What is your room temperature? That core temp around 42 C is really cool! I got my card on water cooling so temperature is never an issue.

[Gordiii]

@Yamaruan your GPUs are watercooled running on linux HiveOS? If so, any specific configs or no different to it’s vanilla GPU fan cooling?

[Yamaruan]

No, nothing special, you just have alot more headroom to OC the card and never have to worry about thermal throttling or summer or anything. Water is the way to go if you live in hot climate country.

[Gordiii]

Thanks for your reply. I’m glad to know I don’t need to run on Windows for converting to liquid cooling.

Are your GPUs Nvidia or AMDs? On the Fan setting in HiveOS for each GPU, you leave empty or put 0?

[Yamaruan]

I have a mixed rig of rtx3080 and rx6800, all of them are water cooled so, the radiator fans are all setup externally so nothing to do with fan setting in the mining OS. Why don’t you lock the core at 1075 and just ditch that high power limit?

[grauco74]

Hi… water cooling?.. can you give us some tips on how you did that?

[aw1916]

Is it safe to push memory to 2900/3000?

[Yamaruan]

See for yourself, as long as it’s not crashing every day or two or getting a bunch of bad shares then it’s fine. You need to control core temp and vram well enough to push it that high