R7 370 video card problems

[eddward]

hello
my system is:
Procesor AMD Vision A10-6800K 4.1GHz
PSU: Inter-Tech SinanPower 530W
videocard: Sapphire Radeon HD 7850 1024MB DDR5 Dual-X
mainboard: Asrock FM2A75 PRO4, FM2, SATA 3 x5, USB 3.0 x8, ATX
Ram: Corsair DDR3 8GB (2 x 4GB) 1866MHz CL9 Vengeance Pro
SSD Toshiba Q Series 128GB SATA-III 2.5 inch
HDD WD 1TB SATA-III 7200 rpm 64MB Caviar Blue
HDD Toshiba 1TB, 7200rpm, 32MB, SATA 3
optical unit :LG DVD-RAM GH22NS70
2x140 mm fans on case- powered from psu
1x90 mm fan on case- powered from psu


I just bought an R7 370 4Gb video card and after installing ( i removed the old HD 7850 videocard, added the new one ,updated the drivers) it the system runs just fine but after some time when playing games the pc restarts - pretty much i get a screen with horizontal black and grey lines. When i switch the videocard to the old one the problem is fixed.
Since my power supply is 2 years old ( like the rest of the system)- i thought that the issue might be caused by the fact that the power supply no longer works as it should be when is under heavy load.
I am not sure if the issue is caused by the power supply or i just got a faulty videocard.
I consider anyway to get a new power supply - something like Corsair CX600M, 600W
The system was used around 10-12 Hr/day most of the time of the usage was for gaming or work (3d editing and stuff like that)

So is it the psu fault or i should just consider to send back the videocard to be replaced?

 

[Armadillo2001]

You realise that the only difference between your old and new GPUs is 4GB VRAM, which doesn't really make a difference, core clock, which can easily be matched, and possibly the cooler? This makes me think it's not a power issue, although your PSU is pretty sketchy. I'd say RMA your 370 and just use your 7850, or buy an R9 380.

 

[eddward]

You realise that the only difference between your old and new GPUs is 4GB VRAM, which doesn't really make a difference, core clock, which can easily be matched, and possibly the cooler? This makes me think it's not a power issue, although your PSU is pretty sketchy. I'd say RMA your 370 and just use your 7850, or buy an R9 380.

thank you very much, i will get the r9 380 (was on my list just no in the stock at the moment I placed the order)