The toms hardware review seems pretty good for it? - there comment in summary was "not much overclocking headroom.....most would undervolt it anyways? so moot point really
https://www.tomshardware.com/reviews/gigabyte-rx-vega-64-gaming-oc-review,5441.html
I have a Reference 56 with the 64 BIOS installed and its a pretty quick card still. I am running at 1440p on a Freesync panel and isn't much I cant play at max or mostly max with a few things turned down at between VSYNC and the 75fps cap. The only issue I have ever had with mine is the noise and that Gigabyte has a far superior cooling solution on it, it appears.
For £200 its a cracking deal and you will see some great performance from it

I spotted it last night too and thought WOW!
Can totally recommend undervolting it, I used a guide on here -
https://forums.overclockers.co.uk/t...king-undervolting-information-guide.18793012/
The results completely transform the card, honestly! I see mid 70's maximum temp with fans not breaking 2500rpm and the load voltages have gone from around 300 to between 170-200w which in turn produces A LOT less heat. be worth having a play around to see what you can do
I personally am running the
950mv voltage setting,
50% power limit and state
6-7 at 1536/1537 on the frequencies. Not 100% if the Gigabyte has the same Samsung HBM modules as the reference card (you can check under the
"memory type" heading in GPU-z) as some card brands had Hynix ones which weren't not as clockable from memory , but if so I run mine at
1050MHz as my daily frequency too up from the 945 I think it is stock, makes a BIG difference. VEGA loves memory frequency more than playing about increasing the core I found and develops much less heat that way too.
My GPU-z bandwidth is up from 488GB/sec to 537GB/Sec! not bad for an undervolted card
I keep looking at getting a 5700XT but keep thinking I will absolutely kick myself if I do as this is such a great performer and I wont see enough to warrant the (for me) big outlay
Enough chuntering from me, hope that all helps
Feel free to shout if you want any help, but ICDP's thread was a gem in helping me find my way with it all
Ta
Ben