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I recently upgraded my desktop from a MSI GTX 460 1GB to an Asus GTX 560 1GB. The GTX 560 is not the Ti version so it has 336 CUDA Cores instead of the 384 or 448 CUDA Cores that the Ti versions have

I am using MSI Afterburner for overclocking and MSI Kombustor to test for performance, stability and temperatures. I had to change some values in the "MSIAfterburner.cfg" file for MSI Afterburner to allow me to increase the core voltage.

First was:
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it

Second was:
UnofficialOverclockingMode = 1


The maximum voltage that Afterburner is allowing for my card is 1087mV. I set it for 1075mV and started overclocking. Right now I have the Core Clock at 1000MHz, which automatically increased the Shader Clock to 2000MHz. So far, I have left the Memory Clock at the factory 2004MHz.

With these settings, the card doesn't get too hot. I think the highest it got during stress testing was about 60°C. I didn't get any artifacts when running benches or stress tests with MSI Kombustor. The benchmarks also scored a decent increase versus the factory clocks.

I was wondering how high of overclocks others have been able to achieve with this card and what voltage is needed. It is the GTX 560 1GB, not the Ti version so it only has 336 CUDA Cores.
   
Wife's rig
(9 items)
 
CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
AudioOther
4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
CPUMotherboardGraphicsRAM
Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
Hard DriveHard DriveCoolingOS
ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
MonitorMouse
14.1" LCD Logitech Wireless Mouse M310(Indigo Scroll) 
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Wife's rig
(9 items)
 
CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
AudioOther
4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
CPUMotherboardGraphicsRAM
Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
Hard DriveHard DriveCoolingOS
ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
MonitorMouse
14.1" LCD Logitech Wireless Mouse M310(Indigo Scroll) 
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