Audeka :
ko888 :
What is the brand and model of the PSU?
I believe it's a stock Logisys 480w PSU, it came with my case, my case is the Logisys CS301BK
For a
system using a
single Radeon R7 260X graphics card AMD specifies a minimum of a 500 Watt or greater
system power supply. The power supply should also have
a maximum combined +12 Volt continuous current rating of 25 Amps or greater and have at least
one 6-pin PCI Express supplementary power connector.
Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.
GIGABYTE specifies a system power supply requirement of 450W for their Radeon R7 260X graphics cards but that isn't sufficient or relevant enough information.
Logisys PS480D2 480W power supply
• OEM: Unknown because of the fraudulent use of the UL logo without any UL File Number being provided
• maximum combined +12 Volt continuous current rating of
16 Amps <===
this is grossly insufficient
•
NO PCI Express supplementary power connectors <===
This is an obvious warning sign of insufficient +12V rail capacity
• Modular Output Cables: Yes/No
• Intel Haswell Compliance: No
• No 80 PLUS Efficiency Certification
• 1 Year Limited Warranty
The bottom line is that you need a new power supply unit that is capable of powering your system with the Radeon R7 260X.