Monday, October 14th 2013
Reference Radeon R9 290X Taken Apart
A HIS-branded AMD reference design Radeon R9 290X graphics card was taken apart by Expreview, revealing its cooling solution, the PCB, the VRM, and the star attraction, the company's new 28 nm "Hawaii" silicon. The pictures match with an earlier, blurrier leak from September. The cooling solution is typical AMD fare, with its copper plate covering the GPU, memory, and VRM areas, aluminium channels, and a lateral-flow fan. The PCB features the swanky new 7.08 billion-transistor chip from AMD, sixteen GDDR5 memory chips (all of which are on the obverse side), and the 5+1+1 phase VRM, which uses CPL-made chokes, IR-made DirectFETs, and a new IR-made VRM controller. The first reviews of the Radeon R9 290X should be published later this month. Find more pictures at the source.
Source:
Expreview
61 Comments on Reference Radeon R9 290X Taken Apart
Here's a similar bracket attached to a GTX 690
It's very difficult to keep the shim centered on the core while screwing down the heatsink; the shim wants to move as the thermal paste spreads, and it also moves if you need to shift the heatsink slightly to align with the mounting holes. The shim is only slightly smaller than the brace's opening, so if you are off even a little bit the side of the shim ends up on top of the brace and you end up with a thick paste layer on one side between the core and the shim. It took me about 4 or 5 tries before I got it right the first time I tried it; I'm still not perfect, but I've done it enough times that I'd estimate on any try I have a 50% chance of getting it right now.
The shim adds about 5-10°C over a solution with no shim, but if you don't apply the shim properly (and it ends up slightly overlapping the brace) you can add another 10°C to that. Part of the frustration is that if you applied the shim improperly and it slightly overlaps the brace it's not like the card won't work; it will just run a bit hotter, which makes it hard to tell when you've applied it properly. I'm not that inclined to remove the brace to avoid invalidating the warranty, although that's probably a good solution once the warranty expires.
The shape of the core on the 290 is different, so you need different shims; it might take a while for those to be released.
I found this though...
videocardz.com/46785/amd-radeon-r9-290x-performance-charts-emerge