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Help with gtx 670 directcu 2 TOP

May 9, 2011
1,930 (0.69/day)
Mainland Britain
System Name H2o Box
Processor Intel(R) Xeon e5-2690 v2 Stock 3.0 GHz @ 3.399
Motherboard MSI X79A-G43 Plus (MS-7760) v3
Cooling CPU EK Block & Phobya G-Changer 360 V2.0 RAD H2o VGA "AlphaCool M18" Hybrid
Memory Gskill TridentX 16Gb 8-9-9-24 2T @ 1866Mhz [locked]
Video Card(s) Zotac GTX 1080ti AMP EXTREME
Storage HyperX Fury 120GB & Savage 480GB SSD, Seagate 250GB,250GB 7200rpm Kingston 64GB SSD
Display(s) Panasonic GT30 46'' 1080p 3D HDTV [Custom Resolution 4096*2304]
Case Corsair O-800D
Audio Device(s) Creative Sound Blaster X-Fi Titanium Fatal1ty Pro
Power Supply Be Quiet! [Dark Power Pro 11] 1200W CM replaced [7-4-2017]
Mouse Asus ROG
Keyboard Microsoft Digital Media 1.0A
Software Win 10 Pro 64Bit v 1809 / OS[build 17746.1000]
anyone know the reason why my card fan just rev up and down while evga or msi afterburn read at 40% fan speed and 1140 rpm. It seems a graphic card fan just auto rev up and down without sent info to those software. Its very annoy because I was just surfing the web, and the fan rev up for 2-3 second then rev down to normal. I don't have any red screen right now, but it crashes after 1 hours playing game. temp never excesses 65 degrees.

Try this for the fans revving up issue- open Internet Options/Advanced - Accelerated graphics and select - Use software rendering instead of GPU rendering*

In regard to the system crash, did you rework your system over clock as suggested in a previous post in this thread? [Just because your overclock was stable with a GTX580 it dose not mean that it will be stable with new hardware installed; it may require fine tuning]