thanks to everyone thats thrown in a reply
most appreciated.

most appreciated.

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What case do you have Minty ?
Yup Asus 670 Direct CU is a custom board and very efficient VRM's.

Ive got a xigmatek elysium, pics just a few posts up
Just had a BF3 session, hardware monitor tells me that the bottom card got slightly warmer than the top card.
top card 72 degrees, 48% fan
bottom card 75 degrees, 75 % fan

Asus is not afraid to buck the trend why can they not design a 2.5 slot blower cooler or something ?

That would be pretty cool. They have got a 3 slot cooler on the direct cu ii top 680 cards. I was half tempted to buy a couple of them but i didn't really have the space. Also i didnt really want to go spending 4 figures on my graphics
The 200mm fan is running at max and is the loudest part of my system. All the other fans are Gentle typhoons and are v quiet.
If someone did design waterblocks for the 670 cu top cards i would probably buy a couple as ive already got most of the watercooling stuff.

Yes, that's your answer get them in that loop
Why can't you just make a couple from some generic blocks ?
I'm sure they are being made for the 680 Direct CU so you might get lucky, the problem is they put the VRM's in the reference position on the 670, I don't understand why they did not use the 680 board really as there is little power requirement wise between the cards !
wouldnt mind knowing the difference between the 680 ftw and 670 ftw?
as evga themselves directly sell the 4gb 680 FTW for aprox £500...2gb 680 FTW for aprox £455 heck even the 690 is £800
was tempted for the 690 in a big way but seen website results showing comparison on 2x 670 reference models within 5% of 690 results so for a 670 ftw it would be faster i think..
just need to know the difference between (2GB) 670 FTW and (2GB) 680 FTW to justify the £130 difference.... if it just the lack of a math processor or whatever they are called that work out the geometry then thats crazy.
If somebody releases blocks for them il go for them, im just not a fan of the generic vga blocks, dont look anywhere near as cool as the full cover blocks.