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View Full Version : HSF on BFG 7800GS AGP


The Bigman
08-03-06, 08:28 PM
I did the rma's with my BFG7800GTX's and got the new copper HSF with em but i do danger den watercooling but i wanted to use the copper one to replace the one on the GS.

One problem is the GS is designed diffently than the GT or GTX. And this is the first version GS from BFG.

I looked at the newer GSes at bestbuy and they have the copper HSF that i have with my GTX so why can't i replace it?

The Original one on the BFG is the green one that doesn't do all that great.

BigE4u
08-03-06, 10:02 PM
Since the 7800GS is AGP and the 7800GT/X is PCIe, the coolers were designed around their respective PCBs...

The Bigman
08-03-06, 11:05 PM
Ouch, now thats going to be hard to get on. lol i guess i have to hard mod this thing or just deal with the 55 c idle temps but you know its not so bad max temps are usually around 65c but its primarly a MCE pc and i don't do that much gaming on it.

BigE4u
08-04-06, 12:10 AM
What i dont get is why the interface(pcie to agp) "bridge" chip is even on the 7800GS card. It was introduced back in the days of the 6600series cards, even on some 6200 cards(clocked down 6600s) and then it dissapeared on the 6800series cards, WTF man? lol

gstanford
08-04-06, 12:35 AM
The BR2 bridge chip is on the 7800GS AGP because G70/G71 are native PCi-e chips and require the bridge chip to translate to AGP.

The bridge chip can also work the other direction - nvidia used it to get GeforceFX on PCI-e.

Native PCI-e chips on PCI-e don't require the bridge chip, neither do native AGP chips on AGP.

snowmanwithahat
08-04-06, 12:56 PM
What i dont get is why the interface(pcie to agp) "bridge" chip is even on the 7800GS card. It was introduced back in the days of the 6600series cards, even on some 6200 cards(clocked down 6600s) and then it dissapeared on the 6800series cards, WTF man? lol

you're wrong, the bridge chip is still on the 6800's... it was integrated so that it would fit right under the gpu on the same package, so it can be cooled by the same heatsink

stncttr908
08-04-06, 01:39 PM
you're wrong, the bridge chip is still on the 6800's... it was integrated so that it would fit right under the gpu on the same package, so it can be cooled by the same heatsink
Uh, the 6800 series (NV40) was native AGP. The PCI-E versions are a later core.

Correct me if I'm wrong.