I'm having a couple issues with overclocking this card.
First, my PC specs:
MOBO: ASUS P5P43TD
CPU: i7 920 @ 4 GHz
RAM: Triple Channel Corsair Dom. @ 1600 MHz
GPU: Above mentioned with 12.8 Catalyst
HD: Intel G1 SSD
OS: Win. 7 Pro.
1) I've read many people saying that they were able to get to 1100/1500 with the stock voltages easily, but when I run Heaven at these clocks, I get artifacting and eventually the display driver fails. I also get the display driver issue at these clocks when browsing the web as well. The highest I've been able to get to is 1050/1450 without crashes or other issues.
Now, I do understand that not all cards are created equal and some are just better for overclocking than others, but is this a potential sign of a defective card? I just bought it on Monday, so I do have the option of an RMA. For what it's worth, GPU-Z reports pretty normal stats for temp., voltage, fan, etc. during the Heaven test at the 1050/1450 clocks, so I'm leaning towards my card just having sub-standard components, but you never know.
For what it's worth, my motherboard is an older one that only has PCIE 2.0 slots, so I wonder if that could also be an issue as well.
2) Has anyone been able to overvolt this card? The power slider on the CCC doesn't appear to do anything during testing, and no utility that I've tried (MSI AB, GB OC Guru, Sapphire TriXX) gives me the ability to overvolt the card, only undervolt it. If anyone has any tips for this, that would be appreciated, thanks.
It may be that you have a defective card that will not overclock well or it may be the motherboard that is too old to make use of the full features of the video card but either way since the video card is still new and under the 30 days you will have an easier time with an RMA. Then you will have a new card that may be a better overclocker and in the meantime you can upgrade the bios of the motherboard in hopes that that will make a difference , or you can upgrede the bios first while your waiting for the RMA to process and if that fixes it then you wouldn't have to send the card back and you could cancel the RMA.