I own a Gateway FX 6800 o-1e gaming computer core i7 920 Bloomfield with 3 Gigs of DDR3 Ram. This PC came with an ATI 4850 graphics card and supports crossfire. The PSU is a Liteon 6451-2 rated at 450 watts (500 watts intermittently). The PSU has 2 12 volt 6 Pin PCI-E connectors. One for each graphics card if the user wants to add a second 4850. The unused PCI-E connector is rated at 18.5 amps and also has an extra unused 2 pin connector in the wire bundle. The other PCI-E 6 pin connector is also rated at 18.5 amps has been plugged into the ATI 4850 since I purchased the PC new in I believe 2009.
The fan broke on the ATI 4850 and I want to replace it with a AMD R9 270 graphics card. My PSU seems to have 2 +12 volt rails with a combined 37 amps available. However, I can't seem to find an adapter to connect the 2 6 pin PCI-E cables into a single PCI-E connector to provide the 150 watts required for all the R9 270 cards that are out there. I'm assuming that being an older PSU, each PCI-E connector is 75 watts.
There are no 4 or 2 pin connectors coming from the PSU. I know that the ATI 4850 can draw more than 200 watts under load while gaming. How can that happen if I only have one 75 watt 6 pin PCI-E connector plugged into it.
I ran Extreme Power Supply Calculator Lite for my PC and it says that my total load including the R9 270 video card shows a requirement for 425 watts for my PC configuration. Although I'm not a heavy gamer, being retired I do occasionally play games. My wife and I use this PC for surfing the internet and occasional gaming and video streaming, email etc.
In addition, I have run most of the free stress test programs that are out there and this PC has never crashed. I know that I can probably get a less powerful video card, but if I have to buy a new one, I would prefer a good mid-range card. I hope that you can help me.
Thanks Walt
The fan broke on the ATI 4850 and I want to replace it with a AMD R9 270 graphics card. My PSU seems to have 2 +12 volt rails with a combined 37 amps available. However, I can't seem to find an adapter to connect the 2 6 pin PCI-E cables into a single PCI-E connector to provide the 150 watts required for all the R9 270 cards that are out there. I'm assuming that being an older PSU, each PCI-E connector is 75 watts.
There are no 4 or 2 pin connectors coming from the PSU. I know that the ATI 4850 can draw more than 200 watts under load while gaming. How can that happen if I only have one 75 watt 6 pin PCI-E connector plugged into it.
I ran Extreme Power Supply Calculator Lite for my PC and it says that my total load including the R9 270 video card shows a requirement for 425 watts for my PC configuration. Although I'm not a heavy gamer, being retired I do occasionally play games. My wife and I use this PC for surfing the internet and occasional gaming and video streaming, email etc.
In addition, I have run most of the free stress test programs that are out there and this PC has never crashed. I know that I can probably get a less powerful video card, but if I have to buy a new one, I would prefer a good mid-range card. I hope that you can help me.
Thanks Walt
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