Video Card Problems/1080p choppy


Hi, I just upgraded my gtx 560ti to a gtx 770 last week and all things 1080p has been really choppy. Basically the frame rates drop significantly. For example I was able to play l4d2 fine with my 560ti, now it's choppy like crazy. Another example is when I watch videos on youtube, all 1080p videos are extremely choppy. Please help, and thanks in advance. My cpu is a i5 2500k.

Have you properly installed drivers for the GTX 770? Is your power supply up to the task of supporting the GTX 770's increased power demands? Is the card correctly running at x16 transfer mode on the PCIe slot? (you can check this with GPU-Z) Finally, does swapping the GTX 560 back in resolve the issue? (does everything go back to "normal"?)

What I'm thinking is that you have one of three problems:

- The drivers aren't properly installed/loaded for the 770 and you're either using something that's outdated or a Microsoft-provided generic driver so you aren't seeing very good performance.

- The card isn't properly engaging x16 transfer mode, which may be indicative of one of three things: a defect on the card, an incompatibility between the card and your motherboard, or (probably most likely if you don't experience any crashes/corruption/instability/etc) the card's contacts and the PCIe slot need to be cleaned.

- The card is somehow defective.

I would guess that drivers or the PCIe transfer rate being incorrect are most likely, based on what you've provided thus far (if the card was defective I would expect the machine to either refuse to boot, or to be instable). Thus you should see what the PCIe speed is running at (and again, GPU-Z can check this), and make sure your drivers are properly installed and updated. If GPU-Z shows the card at x1 or x2, shut the machine down, remove the card, and wipe the PCIe shoe off with a dry lint-free cloth, and use a gas duster to clear debris from the slot itself. And I know you're thinking "it's a brand new card!" but unfortunately this seems to be a more common issue with new hardware, and in some cases can actually be caused by the card's packaging material leaving a residue on the slot contacts.

If that fails (e.g. if you have properly updated/installed drivers and it shows x16), I'd suggest returning the card for a replacement and seeing if the replacement exhibits the same problems.


Video Card Problems

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I can answer technical questions about installation, use, and maintinence of most 3D Graphics hardware, and software. I can offer assistance with overclocking (while I do not suggest overclocking while under warranty) and I can give assistance with more complicated problems to the full extent of my abilities.


I have been into computer hardware, especially 3D graphics and the hardware that drives them, for a number of years. I have knowledge in installation, use, troubleshooting, purchase suggestions and over clocking.

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