https://www.3dmark.com/3dm/51449947

Thanks to a very kind guy I've gotten my hands on a 3080 TuF as well.
Without a doubt the best card with 2x'8pin' available.

Played around with Curve UV/OC a bit earlier. It is really really hard inside that power limit.
Getting it under water for benching will get you 30MHz more on average, possibly can raise it a bit more (15-30MHz) adjusting curve further.

So technically water cooling it is not really worth it. You could as well just buy a card with 3x'8pin' and flash the Strix bios.
Those cards will then surely will be real good for benching ... but to be honest ...
I can run this card 1905MHz@0.85V or 1845MHz@0.80V (cut off curve) at 255W and 230W respectively. Literally inaudible and minimal FPS losses.
From 320W to 230W I lose ~5% in average fps in heaven bench 1080p
In actual gaming about the same, however less than that on higher resolutions as I don't have a 10900k but a 3800x for now.

This post has been edited by nrw: Oct 9 2020, 05:51 PM

3080 TUF 1440p low TDP curve OC/UV testing (TimeSpy, HeavenBenchmark all maxed out)

750mV@1740MHz, 19Gbps GDDR6X, 214W average
750mV@1740MHz, 21Gbps GDDR6X, 220W average (running microns at their true spec)

That's 97.5% of stock 3080 TUF performance @68.75% of the power consumption.

Edit: after gaming tried how far I can push it at 750mV for timespy.
Can complete a run at 1770MHz@750mV.
Now that's pretty much stock performance at 220W.

This post has been edited by nrw: Oct 11 2020, 03:32 AM

ye for the above timespy run that's 65% fixed fan speed (which is pretty silent with closed case).
46°C avg. not that bad even for it being 220W 'only'.

guess when I change cpu next month I gotta put those softtubes nicely around the card, now they kinda dangling over it with with 2 quick disconnect couplings.
no gpu waterblock this time then ... well at least I can enjoy 4yrs of warranty this way then.



This post has been edited by nrw: Oct 11 2020, 01:30 PM

To be fair, the bios is 370W, that's just 5W short of the TuF (which doesn't even pull north of 360 in actual usage despite of that)

there's nothing more you can expect for 2x8 pin.

If that's not enough for you, you should not have gotten the master to start with.

2147 avg. clock in TS; not bad!

Got my BS-AST3090-PA Barrow block for my 3080 TuF few days back.

Ran some benchmark runs just earlier.
Ambient temp is 30°C, water temp between 30-33°C.

This run is with core OC, just moving the slider. (+1150 GDDR6X, max power limit)


This run is with quick curve OC, ~15mins of work. (+1150 GDDR6X, max power limit)


Scores under water are pretty consistent.

As a daily stability tested setting I'm running 2010MHz@887mV which is reasonable in power draw and great in performance.

Conclusion: for 2x8PIN cards with a potent cooler, a waterblock is only worth it if you like the looks or want to be fully silent with a higher OC.
I moved from a 1905MHz@850mV (~255W) to 2010MHz@887mV (~305W) by going from air to water.
Both settings being inaudible outside casing. Gained roughly 4% in performance for a little less than RM400.
Obviously I could run it higher than that under water but after 300W the efficiency curve is flattening.

For MAX-OC (disregarding fan noise) the difference is a mere 1.5%.
And those are down to the higher allocation to core (no more fan&rgb) and lower temps and therefore higher boosts.

This post has been edited by nrw: Nov 2 2020, 02:27 PM

to make sure check with the wifi card disabled/removed please.

just now as edmund_yung kindly pointed out the b450i strix is running the wifi pcie 2230 running over it's chipset.

This post has been edited by nrw: Dec 4 2020, 11:47 AM

ye, quite an isolated b450 itx issue haha.

if confirmed just get the b550i aorus or b550i strix.
strix if u like memory oc or need the usb-c.
giga otherwise since it's quite a bit cheaper.
got both with me, both are good boards.

rikimatsu 3070(3060ti) should have lower frequencies for voltage points, so you gotta figure that yourself as I didn't have one to try yet.

Once you found a stable curve just leave a reply so others can take this as starting point.

GDDR6 it should be using K4Z80325BC-HC14 which is specified for 14Gbps but I guess if your cooling allows for it and direct contact to your coolers plate is given you can always try to reach more... probably you can get (close) to 16Gbps... (+1000) But always make sure to check if you lose performance despite raising memory clock, this is where error correction kicks in and you lose performance.