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Substitute GeForce 9800 GX2 with GeForce GTX 770?

I have a five year old Dell XPS 730 with two GeForce 9800 GX2 cards, and I was thinking about buying a single GeForce GTX 770 to replace them. What do I need to look out for? The clock speeds differ, as do the memory clock speeds, and memory bus size, etc. Are there any differences between the two cards that would prevent this upgrade, or is this really a no-brainer and I should just order that GTX 770 already?
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  1. Best answer
    The GTX 770 consumes about 30W more than the 9800 GX2. Your PSU can definitely handle *one* GTX 770 if it could handle *two* 9800 GX2s. If your PSU has 850W or more, you can even add a second GTX 770.

    The 9800 GX2 and GTX 770 are both around 10.5 inches long, so you should be OK from that point of view too.
  2. What are the rest of your current system's specs?
  3. aevm said:
    The GTX 770 consumes about 30W more than the 9800 GX2. Your PSU can definitely handle *one* GTX 770 if it could handle *two* 9800 GX2s. If your PSU has 850W or more, you can even add a second GTX 770.

    The 9800 GX2 and GTX 770 are both around 10.5 inches long, so you should be OK from that point of view too.

    It has a 1000W PSU, so I guess I should be good Watt-wise even with a second GTX 770. Thanks for your reply.
  4. morgoth780 said:
    What are the rest of your current system's specs?

    Intel Core2 Extreme QX9650 @ 3.00GHz
    4x1GB RAM 1333MHz DDR3 (soon to be increased)
    nForce 790i Ultra SLI
    Windows 7 64 bit
  5. I'd just get the 770 then. Considering it was a 5-year old system, there was a decent chance your CPU would bottleneck. There might still be a small bottleneck, but I doubt there'd be a huge one.
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