I am not W1zzard, but I think I can explain. A close friend returned from a business trip to Hong Kong yesterday and brought some of these cards to sell to our friends. He uses one as his current graphics card and shows me one.
The VRM heatsink you asked is provided for VRM cooler which can be found underneath the card heatsink and fan shroud. You can insert the heat pipes into the cooler which is easy to do. Now look at one of W1zzard's photos.
I cannot edit the photo because I do not have permission, but I believe you can notice the VRM cooler at the right part of the card, the one near the 8-pin power connectors? That is where you are going to install the VRM heatsink into. Just... what is the word, insert? Sorry if I chose the wrong word, English is not my native language. Just insert the heatpipes of the VRM heatsink into that black VRM cooler.
As for whether the VRM heatsink is useful, it depends on how hot the card can be or whether you overclock it. It might be able to reduce the VRM temperature because that is what it was built for but I cannot tell for sure, I did not do any test with my friend. I think a friend of mine in Sapporo, Hokkaido would never need the VRM heatsink but perhaps people with warmer or rather hotter room temperature would need it?
As for the BIOS button, you can use it as a switch. If pressed, the card will run at reference clock. If released, the card will run the Turbo BIOS and overclocks automatically. But please remember that you can only press the switch to change the BIOS from reference to Turbo and vice versa when the system is shut down/turn off. Please do not do it when the system is running. I am afraid you will damage the card and probably your motherboard as well.
By the way, since you are a customer, would you mind to share your thoughts about this card? Perhaps a few photos when you are using it? If it is really good then I will buy one for my girlfriend. She could use a GTX 970 to replace her GTX 650 Ti.
heatpipes go in the red marked area
it is safe to switch the bios switch while running, but it wont have any effect until reboot. the switching can be useful though to flash to a bios that you cant boot from anymore (boot from one bios, switch bios via button, flash to it, without restart in between)
Woow,, thanks for the explanation guys!. Very appreciate it!. Thanks a lot!
I will put that extra heatsink on my GPU to reduce heat. because i live at tropical country. and i will use normal bios for now.
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@NightOfChrist : yea, im a customer of this graphic card. For me, its awesome card. its powerful. And i think its worth to buy. because it has cheaper prize than other premium GPU product. (At least in my country, this GPU is cheaper than other premium GPU product).
i will give my review about this card, but sorry cant give you any photo of it for now
I use it to play Battlefield 4, Battlefield 3, Call of Duy : Advanced Warfare, Titanfall, Final Fantasy XIV : A Realm Reborn, CS : GO, and many more.
Everyday, I use standard BIOS / Normal BIOS from this GPU, haven't try Turbo BIOS so far. And i use GeForce Experience to optimize the game (with auto-optimized to ultra setting). Some of them can run smootly with that maximum setting at 60 FPS, 1080p. (like BF3, BF4, BFH, FF XIV : ARR).
But, some of them also sometimes cant run smooth at 60 FPS with that optimized setting. Like FF XIV: ARR, sometimes i only got about 20-30 FPS when i enter town with so many people online there. so crowd there. But it back to normal when i leave that crowd area, back to 50-60FPS.
One problem i found is, on Titanfall. I use GFE to optimized it, and it automaticly sets to ultra setting. but the problem is when i play it, i cant get 60FPS on it. maybe only 20-40 FPS. SO i have to adjust it manualy, so i get the best performance with 60FPS, but its not at ultra setting.
I dont know about this problem i got. Why my GTX970 cant perform as described like the review. Even the review said that some games can run above 60FPS with max setting on Normal BIOS, like shadow of mordor with 80FPS on 1080p. And i tried COD : AW, sometimes the FPS is not stable, but in the review above, it said that it can reach 126 FPS on 1080p. Why i have a different result than from the review? The question is.......Is that Titanfall requirement specification more hardcore than Shadow Mordor? So it makes my GTX970 only runs below 60 fps at max setting? Or maybe because i only use Normal BIOS?? or maybe i got bottleneck PC specification??? (My pc spec is : i7 950, RAM 8GB).. I dont know, maybe some of you can help me to solve this problem.
Is it save/allowed if i use TURBO BIOS everyday? will it damage my card / motherboard if i use Turbo Bios for a long term?
Okay thats my review about this card. Overall its a great card, cheaper from other premium product, and its Powerfull for most games (based on my experience). worth to buy!