Need Help finding out if my new gpu is doa

Celvir · Feb 25, 2015

bought a gpu and plugged in and got no idea if its working or how to get it to or if its simply underpowered

spawn39 · Feb 25, 2015

Celvir :

Hi Celvir,

List your system specs please, including gpu

Celvir · Feb 25, 2015

APU: AMD 6400k
GPU: Sapphire R9 280x Dual x
Ram: 8GB Kingston
MOBO: GIGABYTE GA-F2A88XM-HD3
PSU: Voltek 475 Watt
Windows 7 64 bit

spawn39 · Feb 25, 2015

hi,

I believe your system is under powered to run your new card

required power : 750w ; Recommended 1000w

http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2022&lid=1#

Celvir · Feb 25, 2015

my pc without it is barely over 160 watts, and the max power draw ive seen on benchmarks is 312 from the card, hows that supposed to work?

Celvir · Feb 25, 2015

Could amps from the 12v rail be the problem? ive read that if theres not enough it won't get enough power and therefore wont boot or show

spawn39 · Feb 25, 2015

Celvir :

yeah, see the required is 750w, but your system should run the card ok with a 550w. Personally I will say 475w is just not enough. But fs you already measured the power draw and you have enough available, then the problem must lie somewhere else.

Hopefully other members with more expertise can help with this. Good luck

Celvir · Feb 25, 2015

My new Antec BP550 Plus 550W is supposed to be in today or tomorrow, it may just be a amperage problem, current psu has 34 total 12v amps

spawn39 · Feb 27, 2015

Celvir :

Hi Celvir,

Did your new PSU arrive? Did it solve the problem?

Celvir · Mar 11, 2015

Yeah, It booted straight up when i plugged everything in. Works flawlessly, except for one really bad bottleneck from the cpu.

spawn39 · Mar 11, 2015

Celvir :

Glad to hear everything works fine....atleast it is not DOA as suspected. Seems the PSU was to blame

For the bottleneck issue see this thread: it discusses the AMD 6400k with a R9 270x which is one model below your 280x

Basically your CPU is too weak for your Graphics card

http://www.tomshardware.com/answers/id-2341324/amd-6400k-work-270x.html

Celvir · Mar 11, 2015

Yeah, lookin at getting the 860k to fix that bottleneck now lol

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