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EVGA GTX 760 FTW - VRAM Will Not Overclock

post #1 of 26
Thread Starter 
Hi,

The core is stable at 1320Mhz 1.212V. Custom fan curve keeps it at 70C while gaming, happy with that. Problems arise when I try to overclock the VRAM. The display driver will reset after 10 to 20 minutes of gaming. When I took the cooler off to replace the TIM I noticed that there are no thermal pads on these memory chips.
post #2 of 26
How much are you over-clocking the vram by? 5Mhz, 50Mhz or 500Mhz ???
post #3 of 26
Thread Starter 
Quote:
Originally Posted by HeLeX63 View Post

How much are you over-clocking the vram by? 5Mhz, 50Mhz or 500Mhz ???

+50Mhz.
post #4 of 26
Can't overclock the ram then, try +25. If it does it stock, then RMA.
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
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CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
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post #5 of 26
Firstly. Reset and apply default profile. Make sure voltages are reset and core clock. This time, overclock the memory only! See what happens then come back and post.
post #6 of 26
Quote:
Originally Posted by Antares88 View Post

Hi,

The core is stable at 1320Mhz 1.212V. Custom fan curve keeps it at 70C while gaming, happy with that. Problems arise when I try to overclock the VRAM. The display driver will reset after 10 to 20 minutes of gaming. When I took the cooler off to replace the TIM I noticed that there are no thermal pads on these memory chips.

Here is another Idea
Is there a heat sink or metal plate to cover the RAM? If so there could be poor contact between the RAM and the metal plate cause the OC issues as the RAM could be getting too hot.

Contact EVGA and see if it is suppose to have thermal pads there.
post #7 of 26
The memory doesn't need heat sinks, just some air blowing past them, so make sure you have decent airflow in your case. Can't say I've ever noticed a difference with/without ramsinsks when overclocking.
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CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 MSI Geforce GTX 1060 3GB Gaming X G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
Case
Deepcool Frame 
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Computer
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 MSI Geforce GTX 1060 3GB Gaming X G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
Case
Deepcool Frame 
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post #8 of 26
Thread Starter 
Well, I did some testing just overclocking the memory without core OC, still no luck. Display driver just resets and recovers to desktop. Just to be clear there is no contact between the heat sink and memory chips. I don't believe cooling is an issue here though, I have good airflow and temps throughout my case and the GPU ACX cooler is well ventilated. Thanks for the replies anyway guys.
post #9 of 26
Hmmm... I mean this is the issue, it isn't exactly permitted to RMA a card that doesn't OC, they are only advertised to run at stock speeds. It is a shame you can't OC your memory. Up to you what you wanna do. But nice core clock! smile.gif
post #10 of 26
Quote:
Originally Posted by Antares88 View Post

Hi,

The core is stable at 1320Mhz 1.212V. Custom fan curve keeps it at 70C while gaming, happy with that. Problems arise when I try to overclock the VRAM. The display driver will reset after 10 to 20 minutes of gaming. When I took the cooler off to replace the TIM I noticed that there are no thermal pads on these memory chips.

My EVGA 780 FTW ACX Cooler card has thermal pads on the ram. It sustains +300 OC on the ram, while mining for several weeks. Thinking of trying +400 and +500 OC as scanner shows no artifacts on quick tests. I have an EK water block on the GPU. The VRM area can get as hot as 80c. The rig pictures are in my sig.
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