[Question] Does motherboard VRM effect GPU ?

[JFSwifty]

I can really find an answer and all I know is from my reading so dont trust it but although the GPU has its own VRM its not exclusive to itself and the power needed by the GPU goes through the motherboard VRM or has some relation.

This comes to mind after upgrading my GPU from a GTX 550 to 760 I've all of a sudden got CPU Throttling even on base clock speeds (Turbo, Qn'C and APM disabled) and was wondering if this was down to my motherboard being a quiet cheap ASUS M5A78L-M/USB3 with 4+1 VRM without heatsink(Not an attack on mobo just its fit for this build) being paired with a very hungry 8150 even at stock.

Many Thanks,
JFSwifty

Mobo: M5A78L-M/USB3
CPU: AMD FX-8150 (3.6 GHz; Turbo Disabled)
RAM: 16GB Corsair Vengeance
GPU: GTX 760 (Gigabyte Windforce)
HDD: 2x 1TB
COOLING: Corsair H90
PSU: Corsair CX 750M
Case: NZXT Lexa S

 

[Remmy]

Pure speculation here, but I know some graphics cards get some of their power from the PCIe slot, in addition to their PSU connector, so I'd have thought that the PCIe slot power would be regulated by the motherboard.

 

[barnsley]

Yeah it'll be your motherboard sadly . AMD 8 cores should only be on the higher end motherboards (in terms of Asus, evo and up).